./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex5.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_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/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 4a648fa5fa39d22cc4861f70709210c393681db2 .................................................................................................................................................................................................................................. 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 [2020-11-30 00:52:29,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:52:29,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:52:29,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:52:29,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:52:29,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:52:29,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:52:29,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:52:29,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:52:29,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:52:29,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:52:29,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:52:29,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:52:29,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:52:29,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:52:29,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:52:29,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:52:29,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:52:29,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:52:29,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:52:29,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:52:29,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:52:29,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:52:29,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:52:29,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:52:29,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:52:29,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:52:29,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:52:29,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:52:29,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:52:29,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:52:29,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:52:29,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:52:29,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:52:29,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:52:29,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:52:29,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:52:29,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:52:29,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:52:29,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:52:29,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:52:29,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-30 00:52:29,289 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:52:29,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:52:29,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:52:29,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:52:29,292 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:52:29,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:52:29,293 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:52:29,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:52:29,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:52:29,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:52:29,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:52:29,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:52:29,296 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 00:52:29,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:52:29,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:52:29,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:52:29,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:52:29,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:52:29,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:52:29,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:52:29,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:52:29,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:52:29,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:52:29,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:52:29,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:52:29,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:52:29,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:52:29,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:52:29,303 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_00387471-e35f-4290-b761-1666301e2f88/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a648fa5fa39d22cc4861f70709210c393681db2 [2020-11-30 00:52:29,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:52:29,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:52:29,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:52:29,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:52:29,648 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:52:29,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex5.c [2020-11-30 00:52:29,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/data/9dcf086a1/98851df915a64426a187ac354f636c98/FLAG05e599763 [2020-11-30 00:52:30,245 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:52:30,247 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-WST2014-Ex5.c [2020-11-30 00:52:30,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/data/9dcf086a1/98851df915a64426a187ac354f636c98/FLAG05e599763 [2020-11-30 00:52:30,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/data/9dcf086a1/98851df915a64426a187ac354f636c98 [2020-11-30 00:52:30,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:52:30,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:52:30,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:52:30,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:52:30,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:52:30,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f796f39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30, skipping insertion in model container [2020-11-30 00:52:30,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:52:30,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:52:30,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:52:30,813 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:52:30,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:52:30,866 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:52:30,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30 WrapperNode [2020-11-30 00:52:30,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:52:30,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:52:30,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:52:30,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:52:30,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:52:30,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:52:30,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:52:30,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:52:30,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... [2020-11-30 00:52:30,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:52:30,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:52:30,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:52:30,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:52:30,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/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 [2020-11-30 00:52:31,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:52:31,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:52:31,190 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:52:31,192 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:52:31,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:52:31 BoogieIcfgContainer [2020-11-30 00:52:31,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:52:31,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:52:31,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:52:31,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:52:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:52:30" (1/3) ... [2020-11-30 00:52:31,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192e1a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:52:31, skipping insertion in model container [2020-11-30 00:52:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:52:30" (2/3) ... [2020-11-30 00:52:31,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192e1a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:52:31, skipping insertion in model container [2020-11-30 00:52:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:52:31" (3/3) ... [2020-11-30 00:52:31,210 INFO L111 eAbstractionObserver]: Analyzing ICFG LeikeHeizmann-WST2014-Ex5.c [2020-11-30 00:52:31,225 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:52:31,230 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:52:31,249 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:52:31,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:52:31,289 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:52:31,289 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:52:31,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:52:31,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:52:31,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:52:31,290 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:52:31,290 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:52:31,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-30 00:52:31,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-30 00:52:31,313 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:52:31,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-30 00:52:31,315 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:52:31,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:52:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-30 00:52:31,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:52:31,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149373699] [2020-11-30 00:52:31,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:52:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:52:31,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:52:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:52:31,443 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:52:31,460 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:52:31,461 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:52:31,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:52:31,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:52:31 BoogieIcfgContainer [2020-11-30 00:52:31,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:52:31,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:52:31,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:52:31,480 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:52:31,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:52:31" (3/4) ... [2020-11-30 00:52:31,483 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:52:31,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_00387471-e35f-4290-b761-1666301e2f88/bin/uautomizer/witness.graphml [2020-11-30 00:52:31,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:52:31,524 INFO L168 Benchmark]: Toolchain (without parser) took 920.82 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 63.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:31,525 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:52:31,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.38 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 86.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:31,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 109.1 MB. Free memory was 86.8 MB in the beginning and 85.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:52:31,527 INFO L168 Benchmark]: Boogie Preprocessor took 20.24 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.3 MB in the end (delta: 948.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:52:31,528 INFO L168 Benchmark]: RCFGBuilder took 271.60 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 76.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:31,529 INFO L168 Benchmark]: TraceAbstraction took 280.70 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 64.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:52:31,530 INFO L168 Benchmark]: Witness Printer took 41.81 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 63.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:52:31,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.38 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 60.0 MB in the beginning and 86.8 MB in the end (delta: -26.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 109.1 MB. Free memory was 86.8 MB in the beginning and 85.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.24 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 84.3 MB in the end (delta: 948.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 271.60 ms. Allocated memory is still 109.1 MB. Free memory was 84.3 MB in the beginning and 76.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 280.70 ms. Allocated memory is still 109.1 MB. Free memory was 75.4 MB in the beginning and 64.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 41.81 ms. Allocated memory is still 109.1 MB. Free memory was 64.9 MB in the beginning and 63.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int a, b, olda; [L15] a = __VERIFIER_nondet_int() [L16] b = __VERIFIER_nondet_int() [L17] COND TRUE a >= 7 [L18] olda = a [L19] a = b [L20] olda + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=10occurred 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, 3 NumberOfCodeBlocks, 3 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...