./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.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_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/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 5155088d89d02424835a418b2f1dfc7cb44efefa ............................................................................................................................................................................................................................................................................................................................................................................................ 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 20:31:40,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:31:40,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:31:40,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:31:40,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:31:40,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:31:40,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:31:40,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:31:40,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:31:40,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:31:40,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:31:40,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:31:40,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:31:40,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:31:40,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:31:40,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:31:40,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:31:40,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:31:40,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:31:40,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:31:40,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:31:40,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:31:40,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:31:40,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:31:40,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:31:40,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:31:40,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:31:40,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:31:40,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:31:40,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:31:40,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:31:40,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:31:40,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:31:40,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:31:40,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:31:40,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:31:40,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:31:40,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:31:40,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:31:40,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:31:40,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:31:40,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 20:31:40,602 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:31:40,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:31:40,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:31:40,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:31:40,605 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:31:40,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:31:40,606 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:31:40,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:31:40,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:31:40,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:31:40,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:31:40,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:31:40,607 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:31:40,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:31:40,608 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:31:40,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:31:40,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:31:40,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:31:40,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:31:40,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:31:40,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:31:40,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:31:40,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:31:40,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:31:40,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:31:40,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:31:40,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:31:40,611 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:31:40,611 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_771a5b19-2325-4403-998b-d389219b8cbf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5155088d89d02424835a418b2f1dfc7cb44efefa [2020-11-29 20:31:40,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:31:40,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:31:40,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:31:40,890 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:31:40,891 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:31:40,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.c [2020-11-29 20:31:40,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/data/ce428c65d/302a90571b1c4cbba22f95bb6e58853f/FLAGba2848dd4 [2020-11-29 20:31:41,378 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:31:41,379 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig2.c [2020-11-29 20:31:41,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/data/ce428c65d/302a90571b1c4cbba22f95bb6e58853f/FLAGba2848dd4 [2020-11-29 20:31:41,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/data/ce428c65d/302a90571b1c4cbba22f95bb6e58853f [2020-11-29 20:31:41,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:31:41,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:31:41,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:31:41,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:31:41,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:31:41,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:31:41" (1/1) ... [2020-11-29 20:31:41,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ac3709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:41, skipping insertion in model container [2020-11-29 20:31:41,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:31:41" (1/1) ... [2020-11-29 20:31:41,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:31:41,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:31:42,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:31:42,045 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:31:42,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:31:42,093 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:31:42,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42 WrapperNode [2020-11-29 20:31:42,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:31:42,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:31:42,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:31:42,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:31:42,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:31:42,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:31:42,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:31:42,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:31:42,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... [2020-11-29 20:31:42,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:31:42,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:31:42,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:31:42,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:31:42,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/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 20:31:42,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:31:42,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:31:42,442 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:31:42,443 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:31:42,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:31:42 BoogieIcfgContainer [2020-11-29 20:31:42,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:31:42,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:31:42,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:31:42,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:31:42,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:31:41" (1/3) ... [2020-11-29 20:31:42,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fafc76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:31:42, skipping insertion in model container [2020-11-29 20:31:42,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:31:42" (2/3) ... [2020-11-29 20:31:42,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fafc76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:31:42, skipping insertion in model container [2020-11-29 20:31:42,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:31:42" (3/3) ... [2020-11-29 20:31:42,457 INFO L111 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig2.c [2020-11-29 20:31:42,468 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:31:42,485 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 20:31:42,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:31:42,553 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:31:42,553 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:31:42,553 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:31:42,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:31:42,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:31:42,554 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:31:42,554 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:31:42,554 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:31:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-29 20:31:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 20:31:42,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:42,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 20:31:42,604 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:31:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:42,609 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-29 20:31:42,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:42,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148971269] [2020-11-29 20:31:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:42,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:42,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148971269] [2020-11-29 20:31:42,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:31:42,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:31:42,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224215083] [2020-11-29 20:31:42,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:31:42,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:42,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:31:42,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:31:42,802 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2020-11-29 20:31:42,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:42,994 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-11-29 20:31:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:31:42,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-29 20:31:42,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:43,008 INFO L225 Difference]: With dead ends: 46 [2020-11-29 20:31:43,008 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 20:31:43,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:31:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 20:31:43,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18. [2020-11-29 20:31:43,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 20:31:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-29 20:31:43,047 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2020-11-29 20:31:43,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:43,047 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 20:31:43,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:31:43,048 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-29 20:31:43,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 20:31:43,048 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:43,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 20:31:43,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:31:43,049 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:31:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:43,050 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-11-29 20:31:43,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:43,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091637175] [2020-11-29 20:31:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:43,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091637175] [2020-11-29 20:31:43,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:31:43,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:31:43,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843717356] [2020-11-29 20:31:43,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:31:43,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:31:43,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:31:43,097 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-11-29 20:31:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:43,192 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-11-29 20:31:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:31:43,192 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-29 20:31:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:43,193 INFO L225 Difference]: With dead ends: 31 [2020-11-29 20:31:43,193 INFO L226 Difference]: Without dead ends: 30 [2020-11-29 20:31:43,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:31:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-29 20:31:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2020-11-29 20:31:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 20:31:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-29 20:31:43,201 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 4 [2020-11-29 20:31:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:43,201 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-29 20:31:43,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:31:43,201 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-29 20:31:43,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 20:31:43,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:43,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 20:31:43,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:31:43,204 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:31:43,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:43,207 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-29 20:31:43,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:43,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223881975] [2020-11-29 20:31:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:43,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223881975] [2020-11-29 20:31:43,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:31:43,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:31:43,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17295573] [2020-11-29 20:31:43,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:31:43,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:43,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:31:43,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:31:43,260 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 3 states. [2020-11-29 20:31:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:43,272 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-11-29 20:31:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:31:43,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 20:31:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:43,274 INFO L225 Difference]: With dead ends: 22 [2020-11-29 20:31:43,274 INFO L226 Difference]: Without dead ends: 21 [2020-11-29 20:31:43,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:31:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-29 20:31:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-29 20:31:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-29 20:31:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-11-29 20:31:43,279 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 5 [2020-11-29 20:31:43,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:43,280 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-11-29 20:31:43,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:31:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-29 20:31:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 20:31:43,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:43,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 20:31:43,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:31:43,281 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:31:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:43,282 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-11-29 20:31:43,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:43,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421535847] [2020-11-29 20:31:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:31:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:31:43,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421535847] [2020-11-29 20:31:43,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:31:43,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:31:43,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727921471] [2020-11-29 20:31:43,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:31:43,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:31:43,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:31:43,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:31:43,314 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2020-11-29 20:31:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:31:43,335 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2020-11-29 20:31:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:31:43,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 20:31:43,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:31:43,336 INFO L225 Difference]: With dead ends: 21 [2020-11-29 20:31:43,336 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 20:31:43,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:31:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 20:31:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 20:31:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 20:31:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-11-29 20:31:43,341 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 5 [2020-11-29 20:31:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:31:43,342 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-11-29 20:31:43,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:31:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-11-29 20:31:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:31:43,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:31:43,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:31:43,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:31:43,343 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:31:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:31:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 925954989, now seen corresponding path program 1 times [2020-11-29 20:31:43,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:31:43,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683301267] [2020-11-29 20:31:43,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:31:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:43,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:31:43,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:31:43,381 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:31:43,382 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:31:43,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:31:43,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:31:43 BoogieIcfgContainer [2020-11-29 20:31:43,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:31:43,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:31:43,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:31:43,401 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:31:43,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:31:42" (3/4) ... [2020-11-29 20:31:43,404 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:31:43,438 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_771a5b19-2325-4403-998b-d389219b8cbf/bin/uautomizer/witness.graphml [2020-11-29 20:31:43,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:31:43,440 INFO L168 Benchmark]: Toolchain (without parser) took 1611.21 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 69.1 MB in the beginning and 67.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:43,441 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 96.5 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:43,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.40 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 74.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:43,442 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.25 ms. Allocated memory is still 96.5 MB. Free memory was 74.9 MB in the beginning and 73.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:43,443 INFO L168 Benchmark]: Boogie Preprocessor took 23.67 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 72.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:43,443 INFO L168 Benchmark]: RCFGBuilder took 289.41 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 63.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:43,444 INFO L168 Benchmark]: TraceAbstraction took 949.86 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.8 MB in the beginning and 68.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:31:43,444 INFO L168 Benchmark]: Witness Printer took 37.62 ms. Allocated memory is still 117.4 MB. Free memory was 68.7 MB in the beginning and 67.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:31:43,448 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 96.5 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.40 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 74.9 MB in the end (delta: -6.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.25 ms. Allocated memory is still 96.5 MB. Free memory was 74.9 MB in the beginning and 73.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.67 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 72.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 289.41 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 63.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 949.86 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.8 MB in the beginning and 68.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * Witness Printer took 37.62 ms. Allocated memory is still 117.4 MB. Free memory was 68.7 MB in the beginning and 67.1 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: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int x = __VERIFIER_nondet_int(); [L13] int y = __VERIFIER_nondet_int(); [L14] COND TRUE x > 0 && y > 0 [L15] int old_x = x; [L16] int old_y = y; [L17] COND FALSE !(__VERIFIER_nondet_int()) [L21] EXPR old_y - 2 [L21] x = old_y - 2 [L22] old_x + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 71 SDslu, 42 SDs, 0 SdLazy, 48 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...