./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX --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 7a853b3510c5613f54b8d6b23d474c4e32a31e8aca13042a511ee4a733a5c07a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:33:37,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:33:37,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:33:37,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:33:37,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:33:37,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:33:37,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:33:37,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:33:37,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:33:37,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:33:37,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:33:37,114 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:33:37,114 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:33:37,116 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:33:37,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:33:37,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:33:37,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:33:37,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:33:37,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:33:37,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:33:37,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:33:37,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:33:37,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:33:37,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:33:37,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:33:37,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:33:37,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:33:37,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:33:37,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:33:37,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:33:37,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:33:37,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:33:37,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:33:37,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:33:37,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:33:37,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:33:37,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:33:37,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:33:37,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:33:37,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:33:37,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:33:37,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-09 09:33:37,239 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:33:37,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:33:37,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:33:37,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:33:37,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:33:37,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:33:37,243 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:33:37,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:33:37,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:33:37,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:33:37,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:33:37,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:33:37,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:33:37,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:33:37,246 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-09 09:33:37,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:33:37,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:33:37,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:33:37,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:33:37,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:33:37,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:33:37,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:37,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:33:37,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:33:37,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:33:37,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:33:37,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:33:37,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:33:37,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:33:37,252 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_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a853b3510c5613f54b8d6b23d474c4e32a31e8aca13042a511ee4a733a5c07a [2021-11-09 09:33:37,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:33:37,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:33:37,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:33:37,571 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:33:37,572 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:33:37,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.c [2021-11-09 09:33:37,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/data/fc267da98/d0857cb04d394c8399abb607b46717fe/FLAGcf0ac5dde [2021-11-09 09:33:38,251 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:33:38,252 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.09.c [2021-11-09 09:33:38,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/data/fc267da98/d0857cb04d394c8399abb607b46717fe/FLAGcf0ac5dde [2021-11-09 09:33:38,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/data/fc267da98/d0857cb04d394c8399abb607b46717fe [2021-11-09 09:33:38,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:33:38,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:33:38,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:38,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:33:38,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:33:38,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654b35fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38, skipping insertion in model container [2021-11-09 09:33:38,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:33:38,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:33:38,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:38,833 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:33:38,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:33:38,881 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:33:38,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38 WrapperNode [2021-11-09 09:33:38,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:33:38,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:38,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:33:38,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:33:38,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:33:38,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:33:38,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:33:38,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:33:38,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:33:38,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:33:38,948 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:33:38,948 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:33:38,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (1/1) ... [2021-11-09 09:33:38,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:33:38,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:33:39,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:33:39,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:33:39,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:33:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:33:39,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:33:39,334 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-09 09:33:39,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:39 BoogieIcfgContainer [2021-11-09 09:33:39,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:33:39,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:33:39,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:33:39,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:33:39,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:33:38" (1/3) ... [2021-11-09 09:33:39,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720c26c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:39, skipping insertion in model container [2021-11-09 09:33:39,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:33:38" (2/3) ... [2021-11-09 09:33:39,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720c26c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:33:39, skipping insertion in model container [2021-11-09 09:33:39,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:39" (3/3) ... [2021-11-09 09:33:39,348 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.09.c [2021-11-09 09:33:39,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:33:39,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 09:33:39,424 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:33:39,433 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-11-09 09:33:39,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 09:33:39,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-11-09 09:33:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-09 09:33:39,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:33:39,460 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-09 09:33:39,461 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-11-09 09:33:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:33:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 959367, now seen corresponding path program 1 times [2021-11-09 09:33:39,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:33:39,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829430440] [2021-11-09 09:33:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:33:39,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:33:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:33:39,605 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:33:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:33:39,641 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:33:39,644 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 09:33:39,646 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 09:33:39,648 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-09 09:33:39,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:33:39,655 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-09 09:33:39,660 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 09:33:39,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 09:33:39 BoogieIcfgContainer [2021-11-09 09:33:39,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 09:33:39,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:33:39,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:33:39,679 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:33:39,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:33:39" (3/4) ... [2021-11-09 09:33:39,683 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 09:33:39,728 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:33:39,729 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:33:39,732 INFO L168 Benchmark]: Toolchain (without parser) took 1112.17 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 61.4 MB in the beginning and 67.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:39,732 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:39,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.25 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 91.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:39,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.60 ms. Allocated memory is still 115.3 MB. Free memory was 91.7 MB in the beginning and 90.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:39,735 INFO L168 Benchmark]: Boogie Preprocessor took 20.29 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 89.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:39,736 INFO L168 Benchmark]: RCFGBuilder took 388.54 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 81.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:39,737 INFO L168 Benchmark]: TraceAbstraction took 339.05 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 69.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 09:33:39,738 INFO L168 Benchmark]: Witness Printer took 50.27 ms. Allocated memory is still 115.3 MB. Free memory was 69.0 MB in the beginning and 67.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:33:39,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 94.4 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.25 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 61.2 MB in the beginning and 91.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.60 ms. Allocated memory is still 115.3 MB. Free memory was 91.7 MB in the beginning and 90.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.29 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 89.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 388.54 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 81.6 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 339.05 ms. Allocated memory is still 115.3 MB. Free memory was 80.9 MB in the beginning and 69.0 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 50.27 ms. Allocated memory is still 115.3 MB. Free memory was 69.0 MB in the beginning and 67.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z, oldx; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] oldx = __VERIFIER_nondet_int() [L28] x > 0 && x < y && x > 2*oldx [L28] 2*oldx - UnprovableResult [Line: 28]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-11-09 09:33:39,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_882f1d53-e5d3-48cf-ac8f-5571813ffb16/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)