./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.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_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/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 b61f9d11a7993733a89da24850eba50014a42dab .................................................................................................................................................................................................................................................................................................................................................... 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 20:57:09,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:57:09,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:57:09,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:57:09,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:57:09,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:57:09,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:57:09,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:57:09,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:57:09,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:57:09,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:57:09,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:57:10,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:57:10,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:57:10,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:57:10,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:57:10,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:57:10,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:57:10,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:57:10,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:57:10,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:57:10,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:57:10,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:57:10,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:57:10,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:57:10,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:57:10,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:57:10,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:57:10,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:57:10,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:57:10,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:57:10,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:57:10,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:57:10,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:57:10,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:57:10,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:57:10,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:57:10,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:57:10,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:57:10,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:57:10,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:57:10,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 20:57:10,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:57:10,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:57:10,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:57:10,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:57:10,077 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:57:10,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:57:10,077 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:57:10,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:57:10,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:57:10,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:57:10,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:57:10,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:57:10,079 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:57:10,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:57:10,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:57:10,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:57:10,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:57:10,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:57:10,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:57:10,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:57:10,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:57:10,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:57:10,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:57:10,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:57:10,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:57:10,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:57:10,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:57:10,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:57:10,082 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_f95487e2-72f2-4d32-8b0b-49edd42b6686/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b61f9d11a7993733a89da24850eba50014a42dab [2020-11-29 20:57:10,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:57:10,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:57:10,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:57:10,438 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:57:10,439 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:57:10,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c [2020-11-29 20:57:10,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/data/6b72c4a4f/670d0c1d86014c0a8a445715bb9874c1/FLAG43043077d [2020-11-29 20:57:11,116 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:57:11,117 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/sv-benchmarks/c/termination-crafted-lit/ChenFlurMukhopadhyay-SAS2012-Ex2.10.c [2020-11-29 20:57:11,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/data/6b72c4a4f/670d0c1d86014c0a8a445715bb9874c1/FLAG43043077d [2020-11-29 20:57:11,493 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/data/6b72c4a4f/670d0c1d86014c0a8a445715bb9874c1 [2020-11-29 20:57:11,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:57:11,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:57:11,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:57:11,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:57:11,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:57:11,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee4d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11, skipping insertion in model container [2020-11-29 20:57:11,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:57:11,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:57:11,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:57:11,694 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:57:11,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:57:11,738 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:57:11,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11 WrapperNode [2020-11-29 20:57:11,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:57:11,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:57:11,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:57:11,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:57:11,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:57:11,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:57:11,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:57:11,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:57:11,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... [2020-11-29 20:57:11,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:57:11,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:57:11,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:57:11,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:57:11,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/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 20:57:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:57:11,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:57:12,062 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:57:12,062 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:57:12,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:12 BoogieIcfgContainer [2020-11-29 20:57:12,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:57:12,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:57:12,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:57:12,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:57:12,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:57:11" (1/3) ... [2020-11-29 20:57:12,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df53084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:57:12, skipping insertion in model container [2020-11-29 20:57:12,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:11" (2/3) ... [2020-11-29 20:57:12,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df53084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:57:12, skipping insertion in model container [2020-11-29 20:57:12,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:12" (3/3) ... [2020-11-29 20:57:12,075 INFO L111 eAbstractionObserver]: Analyzing ICFG ChenFlurMukhopadhyay-SAS2012-Ex2.10.c [2020-11-29 20:57:12,086 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:57:12,091 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 20:57:12,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 20:57:12,139 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:57:12,139 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:57:12,140 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:57:12,140 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:57:12,140 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:57:12,140 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:57:12,140 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:57:12,140 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:57:12,157 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 20:57:12,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 20:57:12,162 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:57:12,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-29 20:57:12,163 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:57:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:12,169 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-29 20:57:12,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:12,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311951808] [2020-11-29 20:57:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:57:12,450 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 20:57:12,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311951808] [2020-11-29 20:57:12,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:57:12,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:57:12,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013996979] [2020-11-29 20:57:12,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:57:12,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:57:12,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:57:12,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:57:12,476 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-11-29 20:57:12,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:57:12,571 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-11-29 20:57:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:57:12,573 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2020-11-29 20:57:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:57:12,581 INFO L225 Difference]: With dead ends: 18 [2020-11-29 20:57:12,581 INFO L226 Difference]: Without dead ends: 9 [2020-11-29 20:57:12,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:57:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-29 20:57:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 20:57:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:57:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-29 20:57:12,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 3 [2020-11-29 20:57:12,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:57:12,627 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-29 20:57:12,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:57:12,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-29 20:57:12,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 20:57:12,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:57:12,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 20:57:12,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:57:12,630 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:57:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:12,634 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-29 20:57:12,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:12,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67254493] [2020-11-29 20:57:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:57:12,695 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 20:57:12,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67254493] [2020-11-29 20:57:12,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:57:12,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:57:12,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497197727] [2020-11-29 20:57:12,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:57:12,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:57:12,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:57:12,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:57:12,698 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-29 20:57:12,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:57:12,759 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-29 20:57:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:57:12,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-29 20:57:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:57:12,760 INFO L225 Difference]: With dead ends: 9 [2020-11-29 20:57:12,760 INFO L226 Difference]: Without dead ends: 8 [2020-11-29 20:57:12,761 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 20:57:12,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-29 20:57:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 20:57:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 20:57:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-29 20:57:12,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2020-11-29 20:57:12,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:57:12,764 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-29 20:57:12,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:57:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-29 20:57:12,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 20:57:12,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:57:12,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 20:57:12,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:57:12,765 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:57:12,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:12,766 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-11-29 20:57:12,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:12,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742811250] [2020-11-29 20:57:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:57:12,788 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 20:57:12,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742811250] [2020-11-29 20:57:12,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:57:12,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:57:12,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572472666] [2020-11-29 20:57:12,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:57:12,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:57:12,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:57:12,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:57:12,790 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2020-11-29 20:57:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:57:12,816 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-29 20:57:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:57:12,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 20:57:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:57:12,818 INFO L225 Difference]: With dead ends: 9 [2020-11-29 20:57:12,818 INFO L226 Difference]: Without dead ends: 8 [2020-11-29 20:57:12,819 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 20:57:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-29 20:57:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 20:57:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:57:12,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-11-29 20:57:12,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-11-29 20:57:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:57:12,822 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-11-29 20:57:12,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:57:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-11-29 20:57:12,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:57:12,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:57:12,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:57:12,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:57:12,823 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:57:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:12,824 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-29 20:57:12,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:12,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516141438] [2020-11-29 20:57:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:12,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:12,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:12,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:12,859 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:12,859 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:57:12,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:57:12,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:57:12 BoogieIcfgContainer [2020-11-29 20:57:12,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:57:12,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:57:12,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:57:12,881 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:57:12,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:12" (3/4) ... [2020-11-29 20:57:12,883 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:57:12,926 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f95487e2-72f2-4d32-8b0b-49edd42b6686/bin/uautomizer/witness.graphml [2020-11-29 20:57:12,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:57:12,928 INFO L168 Benchmark]: Toolchain (without parser) took 1429.69 ms. Allocated memory is still 109.1 MB. Free memory was 80.1 MB in the beginning and 42.0 MB in the end (delta: 38.0 MB). Peak memory consumption was 35.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:12,929 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 83.9 MB. Free memory was 41.7 MB in the beginning and 41.6 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:57:12,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.17 ms. Allocated memory is still 109.1 MB. Free memory was 79.4 MB in the beginning and 88.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:12,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.74 ms. Allocated memory is still 109.1 MB. Free memory was 88.4 MB in the beginning and 87.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:57:12,934 INFO L168 Benchmark]: Boogie Preprocessor took 24.66 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 86.5 MB in the end (delta: 566.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:57:12,935 INFO L168 Benchmark]: RCFGBuilder took 247.67 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 77.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:12,938 INFO L168 Benchmark]: TraceAbstraction took 814.25 ms. Allocated memory is still 109.1 MB. Free memory was 77.1 MB in the beginning and 43.6 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:12,939 INFO L168 Benchmark]: Witness Printer took 45.35 ms. Allocated memory is still 109.1 MB. Free memory was 43.6 MB in the beginning and 42.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:57:12,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 83.9 MB. Free memory was 41.7 MB in the beginning and 41.6 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.17 ms. Allocated memory is still 109.1 MB. Free memory was 79.4 MB in the beginning and 88.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.74 ms. Allocated memory is still 109.1 MB. Free memory was 88.4 MB in the beginning and 87.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.66 ms. Allocated memory is still 109.1 MB. Free memory was 87.0 MB in the beginning and 86.5 MB in the end (delta: 566.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 247.67 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 77.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 814.25 ms. Allocated memory is still 109.1 MB. Free memory was 77.1 MB in the beginning and 43.6 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 45.35 ms. Allocated memory is still 109.1 MB. Free memory was 43.6 MB in the beginning and 42.0 MB in the end (delta: 1.5 MB). There was no memory consumed. 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; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] COND TRUE x > 0 && y < 0 [L27] EXPR x + y [L27] x = x + y [L28] y - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 20 SDslu, 3 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...