./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex6.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer --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 1ddf57665a2dc09f80314050c3325075c7d61dd7 ........................................................................................................................................................................................................................................ 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-a4ecdab [2020-11-29 19:58:40,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:58:40,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:58:40,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:58:41,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:58:41,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:58:41,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:58:41,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:58:41,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:58:41,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:58:41,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:58:41,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:58:41,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:58:41,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:58:41,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:58:41,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:58:41,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:58:41,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:58:41,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:58:41,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:58:41,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:58:41,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:58:41,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:58:41,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:58:41,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:58:41,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:58:41,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:58:41,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:58:41,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:58:41,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:58:41,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:58:41,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:58:41,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:58:41,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:58:41,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:58:41,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:58:41,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:58:41,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:58:41,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:58:41,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:58:41,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:58:41,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 19:58:41,135 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:58:41,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:58:41,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:58:41,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:58:41,137 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:58:41,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:58:41,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:58:41,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:58:41,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:58:41,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:58:41,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:58:41,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:58:41,144 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 19:58:41,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:58:41,145 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:58:41,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:58:41,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:58:41,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:58:41,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:58:41,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:58:41,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:58:41,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:58:41,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:58:41,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:58:41,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:58:41,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:58:41,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:58:41,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:58:41,149 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-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ddf57665a2dc09f80314050c3325075c7d61dd7 [2020-11-29 19:58:41,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:58:41,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:58:41,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:58:41,495 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:58:41,496 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:58:41,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex6.c [2020-11-29 19:58:41,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/data/eb42aaf83/2501718b9d1e4cf095cf40d4d87f79ff/FLAGa08f183fc [2020-11-29 19:58:42,085 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:58:42,085 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex6.c [2020-11-29 19:58:42,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/data/eb42aaf83/2501718b9d1e4cf095cf40d4d87f79ff/FLAGa08f183fc [2020-11-29 19:58:42,457 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/data/eb42aaf83/2501718b9d1e4cf095cf40d4d87f79ff [2020-11-29 19:58:42,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:58:42,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:58:42,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:58:42,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:58:42,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:58:42,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69434c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42, skipping insertion in model container [2020-11-29 19:58:42,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:58:42,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:58:42,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:58:42,718 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:58:42,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:58:42,752 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:58:42,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42 WrapperNode [2020-11-29 19:58:42,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:58:42,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:58:42,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:58:42,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:58:42,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:58:42,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:58:42,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:58:42,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:58:42,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... [2020-11-29 19:58:42,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:58:42,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:58:42,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:58:42,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:58:42,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/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 [2020-11-29 19:58:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-29 19:58:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-29 19:58:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-11-29 19:58:42,940 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-11-29 19:58:42,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:58:42,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:58:43,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:58:43,278 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-29 19:58:43,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:43 BoogieIcfgContainer [2020-11-29 19:58:43,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:58:43,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:58:43,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:58:43,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:58:43,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:58:42" (1/3) ... [2020-11-29 19:58:43,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfb7803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:58:43, skipping insertion in model container [2020-11-29 19:58:43,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:58:42" (2/3) ... [2020-11-29 19:58:43,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bfb7803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:58:43, skipping insertion in model container [2020-11-29 19:58:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:43" (3/3) ... [2020-11-29 19:58:43,302 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex6.c [2020-11-29 19:58:43,319 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:58:43,324 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 19:58:43,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 19:58:43,388 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:58:43,389 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:58:43,389 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:58:43,389 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:58:43,389 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:58:43,389 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:58:43,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:58:43,390 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:58:43,419 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-29 19:58:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:58:43,425 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:58:43,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:58:43,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:58:43,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:58:43,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1926226671, now seen corresponding path program 1 times [2020-11-29 19:58:43,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:58:43,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346463011] [2020-11-29 19:58:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:58:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:43,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:58:43,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:58:43,625 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:58:43,626 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:58:43,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:58:43,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:58:43 BoogieIcfgContainer [2020-11-29 19:58:43,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:58:43,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:58:43,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:58:43,661 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:58:43,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:58:43" (3/4) ... [2020-11-29 19:58:43,666 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:58:43,742 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_23d6180d-6c32-41ca-8c01-e88446bb145d/bin/uautomizer/witness.graphml [2020-11-29 19:58:43,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:58:43,750 INFO L168 Benchmark]: Toolchain (without parser) took 1287.38 ms. Allocated memory is still 109.1 MB. Free memory was 74.3 MB in the beginning and 58.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:43,752 INFO L168 Benchmark]: CDTParser took 4.44 ms. Allocated memory is still 109.1 MB. Free memory was 81.6 MB in the beginning and 81.6 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:43,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.79 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 86.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:43,756 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.19 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:43,757 INFO L168 Benchmark]: Boogie Preprocessor took 41.02 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 84.0 MB in the end (delta: 493.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:43,758 INFO L168 Benchmark]: RCFGBuilder took 433.46 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 71.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:43,760 INFO L168 Benchmark]: TraceAbstraction took 375.75 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 60.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:58:43,761 INFO L168 Benchmark]: Witness Printer took 87.13 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 58.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:58:43,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.44 ms. Allocated memory is still 109.1 MB. Free memory was 81.6 MB in the beginning and 81.6 MB in the end (delta: 26.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.79 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 86.0 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 50.19 ms. Allocated memory is still 109.1 MB. Free memory was 86.0 MB in the beginning and 84.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.02 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 84.0 MB in the end (delta: 493.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 433.46 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 71.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 375.75 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 60.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 87.13 ms. Allocated memory is still 109.1 MB. Free memory was 59.8 MB in the beginning and 58.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 21]: integer overflow possible integer overflow possible We found a FailurePath: [L34] int a = __VERIFIER_nondet_int(); [L35] int b = __VERIFIER_nondet_int(); [L36] COND TRUE a >= 0 && b >= 0 [L37] CALL f(a, b) VAL [\old(a)=2147483647, \old(b)=1] [L18] COND FALSE !(b == 0) VAL [\old(a)=2147483647, \old(b)=1, a=2147483647, b=1] [L21] 1+a VAL [\old(a)=2147483647, \old(b)=1, a=2147483647, b=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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! Received shutdown request...