./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9c51224894dcd32e556532086a33c2900554a2d1 ........................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:24:37,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:24:37,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:24:37,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:24:37,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:24:37,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:24:37,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:24:37,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:24:37,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:24:37,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:24:37,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:24:37,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:24:37,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:24:37,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:24:37,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:24:37,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:24:37,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:24:37,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:24:37,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:24:37,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:24:37,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:24:37,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:24:37,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:24:37,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:24:37,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:24:37,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:24:37,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:24:37,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:24:37,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:24:37,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:24:37,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:24:37,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:24:37,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:24:37,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:24:37,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:24:37,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:24:37,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:24:37,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:24:37,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:24:37,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:24:37,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:24:37,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-15 19:24:37,326 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:24:37,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:24:37,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:24:37,332 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:24:37,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:24:37,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:24:37,340 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:24:37,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:24:37,341 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 19:24:37,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:24:37,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:24:37,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:24:37,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:24:37,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:24:37,344 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-15 19:24:37,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:24:37,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:24:37,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:24:37,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:24:37,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:24:37,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:24:37,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:24:37,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:24:37,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:24:37,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:24:37,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:24:37,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:24:37,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:24:37,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:24:37,349 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_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c51224894dcd32e556532086a33c2900554a2d1 [2021-10-15 19:24:37,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:24:37,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:24:37,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:24:37,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:24:37,676 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:24:37,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/termination-crafted/Bangalore-2.c [2021-10-15 19:24:37,775 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/data/07fd05cdc/fb0d238f981c4edeac82c99163f0449c/FLAG9c771e5cb [2021-10-15 19:24:38,228 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:24:38,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/sv-benchmarks/c/termination-crafted/Bangalore-2.c [2021-10-15 19:24:38,241 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/data/07fd05cdc/fb0d238f981c4edeac82c99163f0449c/FLAG9c771e5cb [2021-10-15 19:24:38,605 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/data/07fd05cdc/fb0d238f981c4edeac82c99163f0449c [2021-10-15 19:24:38,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:24:38,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:24:38,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:24:38,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:24:38,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:24:38,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adcb5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38, skipping insertion in model container [2021-10-15 19:24:38,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,636 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:24:38,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:24:38,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:24:38,808 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:24:38,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:24:38,831 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:24:38,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38 WrapperNode [2021-10-15 19:24:38,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:24:38,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:24:38,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:24:38,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:24:38,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:24:38,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:24:38,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:24:38,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:24:38,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:24:38,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:24:38,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:24:38,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:24:38,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (1/1) ... [2021-10-15 19:24:38,889 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:24:38,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:24:38,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:24:38,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:24:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:24:38,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:24:39,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:24:39,107 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-15 19:24:39,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:24:39 BoogieIcfgContainer [2021-10-15 19:24:39,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:24:39,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:24:39,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:24:39,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:24:39,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:24:38" (1/3) ... [2021-10-15 19:24:39,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16afc028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:24:39, skipping insertion in model container [2021-10-15 19:24:39,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:24:38" (2/3) ... [2021-10-15 19:24:39,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16afc028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:24:39, skipping insertion in model container [2021-10-15 19:24:39,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:24:39" (3/3) ... [2021-10-15 19:24:39,117 INFO L111 eAbstractionObserver]: Analyzing ICFG Bangalore-2.c [2021-10-15 19:24:39,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:24:39,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-15 19:24:39,171 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:24:39,177 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 [2021-10-15 19:24:39,177 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-15 19:24:39,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-10-15 19:24:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-15 19:24:39,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:24:39,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-15 19:24:39,197 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-15 19:24:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:24:39,203 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2021-10-15 19:24:39,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:24:39,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681344702] [2021-10-15 19:24:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:24:39,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:24:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:24:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:24:39,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:24:39,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681344702] [2021-10-15 19:24:39,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681344702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:24:39,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:24:39,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:24:39,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179101551] [2021-10-15 19:24:39,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:24:39,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:24:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:24:39,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:24:39,433 INFO L87 Difference]: Start difference. First operand has 11 states, 8 states have (on average 1.625) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-15 19:24:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:24:39,559 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-10-15 19:24:39,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:24:39,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-15 19:24:39,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:24:39,569 INFO L225 Difference]: With dead ends: 28 [2021-10-15 19:24:39,570 INFO L226 Difference]: Without dead ends: 15 [2021-10-15 19:24:39,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:24:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-15 19:24:39,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 9. [2021-10-15 19:24:39,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-10-15 19:24:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-15 19:24:39,603 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2021-10-15 19:24:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:24:39,604 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-15 19:24:39,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-15 19:24:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-15 19:24:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-15 19:24:39,605 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:24:39,605 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 19:24:39,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:24:39,606 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-15 19:24:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:24:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2021-10-15 19:24:39,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:24:39,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981724252] [2021-10-15 19:24:39,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:24:39,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:24:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:24:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:24:39,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:24:39,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981724252] [2021-10-15 19:24:39,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981724252] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:24:39,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:24:39,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:24:39,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746611140] [2021-10-15 19:24:39,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:24:39,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:24:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:24:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:24:39,648 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-15 19:24:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:24:39,694 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-15 19:24:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:24:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-15 19:24:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:24:39,696 INFO L225 Difference]: With dead ends: 9 [2021-10-15 19:24:39,696 INFO L226 Difference]: Without dead ends: 8 [2021-10-15 19:24:39,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:24:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-15 19:24:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-15 19:24:39,698 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) [2021-10-15 19:24:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-15 19:24:39,698 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-10-15 19:24:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:24:39,699 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-15 19:24:39,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-15 19:24:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-15 19:24:39,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-15 19:24:39,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-15 19:24:39,700 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-15 19:24:39,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:24:39,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-10-15 19:24:39,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:24:39,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2021-10-15 19:24:39,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:24:39,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350297635] [2021-10-15 19:24:39,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:24:39,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:24:39,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:24:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:24:39,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:24:39,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350297635] [2021-10-15 19:24:39,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350297635] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:24:39,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674377135] [2021-10-15 19:24:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:24:39,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:24:39,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:24:39,788 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:24:39,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:24:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:24:39,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:24:39,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:24:40,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:24:40,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674377135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:24:40,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:24:40,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-15 19:24:40,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126700986] [2021-10-15 19:24:40,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:24:40,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:24:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:24:40,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:24:40,018 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 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) [2021-10-15 19:24:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-15 19:24:40,044 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-15 19:24:40,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:24:40,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 [2021-10-15 19:24:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-15 19:24:40,047 INFO L225 Difference]: With dead ends: 9 [2021-10-15 19:24:40,047 INFO L226 Difference]: Without dead ends: 0 [2021-10-15 19:24:40,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:24:40,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-15 19:24:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-15 19:24:40,049 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) [2021-10-15 19:24:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-15 19:24:40,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-15 19:24:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-15 19:24:40,050 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-15 19:24:40,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2021-10-15 19:24:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-15 19:24:40,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-15 19:24:40,052 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:24:40,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-15 19:24:40,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:24:40,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:24:40,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-15 19:24:40,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:24:40,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-15 19:24:40,292 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-15 19:24:40,292 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-15 19:24:40,292 INFO L853 garLoopResultBuilder]: At program point L23(lines 13 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2021-10-15 19:24:40,293 INFO L853 garLoopResultBuilder]: At program point L19-2(lines 19 21) the Hoare annotation is: (and (<= ULTIMATE.start_main_~y~0 2147483647) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 2147483647)) [2021-10-15 19:24:40,293 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2021-10-15 19:24:40,293 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-15 19:24:40,293 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-15 19:24:40,293 INFO L857 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-10-15 19:24:40,293 INFO L857 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-10-15 19:24:40,294 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2021-10-15 19:24:40,294 INFO L857 garLoopResultBuilder]: For program point L18-1(lines 18 22) no Hoare annotation was computed. [2021-10-15 19:24:40,298 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:24:40,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:24:40 BoogieIcfgContainer [2021-10-15 19:24:40,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:24:40,312 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:24:40,312 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:24:40,313 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:24:40,313 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:24:39" (3/4) ... [2021-10-15 19:24:40,316 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:24:40,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-15 19:24:40,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:24:40,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:24:40,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:24:40,362 INFO L168 Benchmark]: Toolchain (without parser) took 1751.55 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 57.8 MB in the beginning and 83.8 MB in the end (delta: -26.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:24:40,363 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:24:40,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.20 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 69.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:24:40,364 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.96 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:24:40,364 INFO L168 Benchmark]: Boogie Preprocessor took 17.20 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 67.7 MB in the end (delta: 804.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:24:40,365 INFO L168 Benchmark]: RCFGBuilder took 228.40 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 59.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:24:40,366 INFO L168 Benchmark]: TraceAbstraction took 1201.03 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 59.3 MB in the beginning and 85.9 MB in the end (delta: -26.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:24:40,366 INFO L168 Benchmark]: Witness Printer took 48.28 ms. Allocated memory is still 123.7 MB. Free memory was 85.9 MB in the beginning and 83.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:24:40,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 92.3 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 29.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 221.20 ms. Allocated memory is still 92.3 MB. Free memory was 57.6 MB in the beginning and 69.7 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.96 ms. Allocated memory is still 92.3 MB. Free memory was 69.7 MB in the beginning and 68.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.20 ms. Allocated memory is still 92.3 MB. Free memory was 68.5 MB in the beginning and 67.7 MB in the end (delta: 804.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 228.40 ms. Allocated memory is still 92.3 MB. Free memory was 67.5 MB in the beginning and 59.7 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1201.03 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 59.3 MB in the beginning and 85.9 MB in the end (delta: -26.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 48.28 ms. Allocated memory is still 123.7 MB. Free memory was 85.9 MB in the beginning and 83.8 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1129.4ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 9.3ms, AutomataDifference: 267.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 37.2ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 28 SDslu, 3 SDs, 0 SdLazy, 36 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 104.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 14.2ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 17.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 12.7ms SsaConstructionTime, 47.1ms SatisfiabilityAnalysisTime, 320.3ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 18 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 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: 19]: Loop Invariant Derived loop invariant: (y <= 2147483647 && 1 <= y) && x <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: x <= 2147483647 RESULT: Ultimate proved your program to be correct! [2021-10-15 19:24:40,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb672da5-2cc8-4d07-82bd-ba1b797f4a65/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...