./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC --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 7a28cf8e40dd69f496c91c87e17176239a2f164b ...................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:24:57,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:24:57,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:24:57,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:24:57,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:24:57,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:24:57,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:24:57,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:24:57,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:24:57,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:24:57,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:24:57,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:24:57,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:24:57,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:24:57,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:24:57,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:24:57,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:24:57,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:24:57,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:24:57,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:24:57,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:24:57,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:24:57,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:24:57,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:24:57,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:24:57,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:24:57,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:24:57,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:24:57,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:24:57,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:24:57,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:24:57,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:24:57,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:24:57,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:24:57,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:24:57,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:24:57,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:24:57,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:24:57,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:24:57,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:24:57,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:24:57,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-11 00:24:57,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:24:57,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:24:57,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:24:57,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:24:57,451 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:24:57,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:24:57,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:24:57,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:24:57,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:24:57,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:24:57,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:24:57,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:24:57,454 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 00:24:57,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:24:57,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:24:57,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:24:57,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:24:57,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:24:57,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:24:57,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:57,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:24:57,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:24:57,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:24:57,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:24:57,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:24:57,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:24:57,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:24:57,458 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_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a28cf8e40dd69f496c91c87e17176239a2f164b [2021-10-11 00:24:57,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:24:57,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:24:57,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:24:57,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:24:57,753 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:24:57,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c [2021-10-11 00:24:57,834 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/data/af85f9ff3/b42db7b00b1c48c882b7ece7ca32df84/FLAGeadca385e [2021-10-11 00:24:58,320 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:24:58,321 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c [2021-10-11 00:24:58,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/data/af85f9ff3/b42db7b00b1c48c882b7ece7ca32df84/FLAGeadca385e [2021-10-11 00:24:58,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/data/af85f9ff3/b42db7b00b1c48c882b7ece7ca32df84 [2021-10-11 00:24:58,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:24:58,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:24:58,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:58,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:24:58,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:24:58,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db24ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58, skipping insertion in model container [2021-10-11 00:24:58,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:24:58,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:24:58,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:58,903 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:24:58,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:24:58,935 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:24:58,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58 WrapperNode [2021-10-11 00:24:58,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:24:58,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:58,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:24:58,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:24:58,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:24:58,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:24:58,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:24:58,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:24:58,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... [2021-10-11 00:24:58,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:24:58,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:24:58,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:24:58,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:24:58,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:24:59,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:24:59,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:24:59,214 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:24:59,215 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 00:24:59,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:59 BoogieIcfgContainer [2021-10-11 00:24:59,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:24:59,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:24:59,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:24:59,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:24:59,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:24:58" (1/3) ... [2021-10-11 00:24:59,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88148c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:59, skipping insertion in model container [2021-10-11 00:24:59,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:24:58" (2/3) ... [2021-10-11 00:24:59,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@88148c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:24:59, skipping insertion in model container [2021-10-11 00:24:59,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:59" (3/3) ... [2021-10-11 00:24:59,229 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.06.c [2021-10-11 00:24:59,243 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:24:59,246 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 00:24:59,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 00:24:59,283 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:24:59,284 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:24:59,284 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:24:59,284 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:24:59,284 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:24:59,284 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:24:59,285 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:24:59,285 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:24:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 00:24:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 00:24:59,304 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:59,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 00:24:59,305 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:59,312 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-11 00:24:59,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:59,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825955212] [2021-10-11 00:24:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:24:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:24:59,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825955212] [2021-10-11 00:24:59,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:24:59,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:24:59,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924908013] [2021-10-11 00:24:59,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:24:59,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:24:59,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:24:59,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:24:59,494 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2021-10-11 00:24:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:24:59,552 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2021-10-11 00:24:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:24:59,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2021-10-11 00:24:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:24:59,562 INFO L225 Difference]: With dead ends: 35 [2021-10-11 00:24:59,563 INFO L226 Difference]: Without dead ends: 22 [2021-10-11 00:24:59,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:24:59,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-11 00:24:59,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2021-10-11 00:24:59,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 00:24:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 00:24:59,599 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-10-11 00:24:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:24:59,600 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 00:24:59,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:24:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 00:24:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 00:24:59,601 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:24:59,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 00:24:59,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:24:59,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 00:24:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:24:59,603 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-11 00:24:59,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:24:59,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497278933] [2021-10-11 00:24:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:24:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:24:59,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:24:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:24:59,635 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:24:59,650 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:24:59,650 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:24:59,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 00:24:59,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:24:59 BoogieIcfgContainer [2021-10-11 00:24:59,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:24:59,672 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:24:59,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:24:59,673 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:24:59,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:24:59" (3/4) ... [2021-10-11 00:24:59,675 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:24:59,713 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_400af523-0c35-4b91-8a4e-f3b3926f0fe5/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:24:59,713 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:24:59,715 INFO L168 Benchmark]: Toolchain (without parser) took 1006.45 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 91.3 MB in the beginning and 118.8 MB in the end (delta: -27.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:59,731 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 119.5 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:59,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.49 ms. Allocated memory is still 119.5 MB. Free memory was 91.1 MB in the beginning and 95.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:59,733 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.98 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 94.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:59,734 INFO L168 Benchmark]: Boogie Preprocessor took 18.32 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.2 MB in the end (delta: 774.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:59,735 INFO L168 Benchmark]: RCFGBuilder took 230.06 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 83.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:24:59,736 INFO L168 Benchmark]: TraceAbstraction took 446.50 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 83.2 MB in the beginning and 118.9 MB in the end (delta: -35.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:59,737 INFO L168 Benchmark]: Witness Printer took 40.74 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:24:59,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 119.5 MB. Free memory is still 77.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.49 ms. Allocated memory is still 119.5 MB. Free memory was 91.1 MB in the beginning and 95.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.98 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 94.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.32 ms. Allocated memory is still 119.5 MB. Free memory was 94.0 MB in the beginning and 93.2 MB in the end (delta: 774.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 230.06 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 83.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 446.50 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 83.2 MB in the beginning and 118.9 MB in the end (delta: -35.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 40.74 ms. Allocated memory is still 144.7 MB. Free memory was 120.2 MB in the beginning and 118.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] COND TRUE x < 0 [L28] x + z - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 12 SDslu, 22 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...