./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/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 7a28cf8e40dd69f496c91c87e17176239a2f164b ....................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:51:25,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:51:25,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:51:25,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:51:25,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:51:25,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:51:25,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:51:25,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:51:25,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:51:25,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:51:25,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:51:25,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:51:25,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:51:25,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:51:25,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:51:25,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:51:25,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:51:25,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:51:25,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:51:25,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:51:25,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:51:25,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:51:25,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:51:25,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:51:25,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:51:25,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:51:25,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:51:25,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:51:25,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:51:25,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:51:25,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:51:25,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:51:25,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:51:25,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:51:25,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:51:25,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:51:25,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:51:25,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:51:25,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:51:25,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:51:25,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:51:25,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 18:51:25,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:51:25,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:51:25,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:51:25,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:51:25,590 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:51:25,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:51:25,591 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:51:25,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:51:25,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:51:25,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:51:25,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:51:25,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:51:25,592 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 18:51:25,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:51:25,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:51:25,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:51:25,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:51:25,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:51:25,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:51:25,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:51:25,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:51:25,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:51:25,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:51:25,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:51:25,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:51:25,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:51:25,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:51:25,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:51:25,596 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_e358eafd-dbc1-408f-a70b-3541610b6b24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a28cf8e40dd69f496c91c87e17176239a2f164b [2020-11-29 18:51:25,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:51:25,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:51:25,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:51:25,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:51:25,896 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:51:25,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c [2020-11-29 18:51:25,974 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/data/5fdcd1271/236bb114e0aa4cbc99ff59f6939c0dae/FLAGb7a8a5cdc [2020-11-29 18:51:26,438 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:51:26,438 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex3.06.c [2020-11-29 18:51:26,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/data/5fdcd1271/236bb114e0aa4cbc99ff59f6939c0dae/FLAGb7a8a5cdc [2020-11-29 18:51:26,819 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/data/5fdcd1271/236bb114e0aa4cbc99ff59f6939c0dae [2020-11-29 18:51:26,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:51:26,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:51:26,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:51:26,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:51:26,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:51:26,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:51:26" (1/1) ... [2020-11-29 18:51:26,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a07386c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:26, skipping insertion in model container [2020-11-29 18:51:26,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:51:26" (1/1) ... [2020-11-29 18:51:26,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:51:26,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:51:26,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:51:27,000 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:51:27,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:51:27,043 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:51:27,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27 WrapperNode [2020-11-29 18:51:27,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:51:27,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:51:27,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:51:27,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:51:27,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:51:27,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:51:27,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:51:27,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:51:27,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... [2020-11-29 18:51:27,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:51:27,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:51:27,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:51:27,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:51:27,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/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 18:51:27,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:51:27,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:51:27,359 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:51:27,359 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 18:51:27,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:27 BoogieIcfgContainer [2020-11-29 18:51:27,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:51:27,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:51:27,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:51:27,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:51:27,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:51:26" (1/3) ... [2020-11-29 18:51:27,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c060f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:51:27, skipping insertion in model container [2020-11-29 18:51:27,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:51:27" (2/3) ... [2020-11-29 18:51:27,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c060f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:51:27, skipping insertion in model container [2020-11-29 18:51:27,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:27" (3/3) ... [2020-11-29 18:51:27,383 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex3.06.c [2020-11-29 18:51:27,397 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:51:27,405 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 18:51:27,432 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 18:51:27,458 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:51:27,458 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:51:27,458 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:51:27,458 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:51:27,458 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:51:27,459 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:51:27,459 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:51:27,459 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:51:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-29 18:51:27,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 18:51:27,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:51:27,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-29 18:51:27,494 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 18:51:27,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:27,500 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-29 18:51:27,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:27,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759259143] [2020-11-29 18:51:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:51:27,658 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 18:51:27,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759259143] [2020-11-29 18:51:27,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:51:27,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:51:27,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207317071] [2020-11-29 18:51:27,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:51:27,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:51:27,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:51:27,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:51:27,681 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2020-11-29 18:51:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:51:27,813 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-11-29 18:51:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:51:27,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-29 18:51:27,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:51:27,823 INFO L225 Difference]: With dead ends: 35 [2020-11-29 18:51:27,823 INFO L226 Difference]: Without dead ends: 22 [2020-11-29 18:51:27,833 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 18:51:27,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-29 18:51:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2020-11-29 18:51:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 18:51:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-29 18:51:27,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2020-11-29 18:51:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:51:27,893 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-29 18:51:27,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:51:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-29 18:51:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 18:51:27,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:51:27,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 18:51:27,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:51:27,895 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 18:51:27,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:51:27,896 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-29 18:51:27,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:51:27,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722686853] [2020-11-29 18:51:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:51:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:27,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:51:27,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:51:27,951 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:51:27,951 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:51:27,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:51:27,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:51:27 BoogieIcfgContainer [2020-11-29 18:51:27,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:51:27,984 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:51:27,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:51:27,984 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:51:27,985 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:51:27" (3/4) ... [2020-11-29 18:51:27,988 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:51:28,041 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e358eafd-dbc1-408f-a70b-3541610b6b24/bin/uautomizer/witness.graphml [2020-11-29 18:51:28,041 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:51:28,047 INFO L168 Benchmark]: Toolchain (without parser) took 1218.67 ms. Allocated memory is still 115.3 MB. Free memory was 88.4 MB in the beginning and 93.8 MB in the end (delta: -5.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:28,048 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 92.3 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:28,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.52 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 95.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:28,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 115.3 MB. Free memory was 95.0 MB in the beginning and 93.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:28,049 INFO L168 Benchmark]: Boogie Preprocessor took 16.79 ms. Allocated memory is still 115.3 MB. Free memory was 93.6 MB in the beginning and 92.6 MB in the end (delta: 952.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:51:28,050 INFO L168 Benchmark]: RCFGBuilder took 269.22 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 83.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:28,051 INFO L168 Benchmark]: TraceAbstraction took 619.61 ms. Allocated memory is still 115.3 MB. Free memory was 83.1 MB in the beginning and 59.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:28,054 INFO L168 Benchmark]: Witness Printer took 57.73 ms. Allocated memory is still 115.3 MB. Free memory was 59.1 MB in the beginning and 93.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:51:28,059 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 92.3 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.52 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 95.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.20 ms. Allocated memory is still 115.3 MB. Free memory was 95.0 MB in the beginning and 93.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.79 ms. Allocated memory is still 115.3 MB. Free memory was 93.6 MB in the beginning and 92.6 MB in the end (delta: 952.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 269.22 ms. Allocated memory is still 115.3 MB. Free memory was 92.6 MB in the beginning and 83.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 619.61 ms. Allocated memory is still 115.3 MB. Free memory was 83.1 MB in the beginning and 59.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 57.73 ms. Allocated memory is still 115.3 MB. Free memory was 59.1 MB in the beginning and 93.8 MB in the end (delta: -34.7 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: integer overflow possible integer overflow possible We found a FailurePath: [L23] int x, y, z; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] z = __VERIFIER_nondet_int() [L27] COND TRUE x < 0 [L28] x + z - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 12 SDslu, 22 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...