./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.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_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c -s /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/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 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:12:05,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:05,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:05,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:05,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:05,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:05,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:05,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:05,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:05,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:05,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:05,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:05,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:05,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:05,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:05,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:05,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:05,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:05,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:05,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:05,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:05,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:05,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:05,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:05,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:05,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:05,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:05,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:05,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:05,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:05,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:05,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:05,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:05,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:05,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:05,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:05,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:05,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:05,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:05,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:05,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:05,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-30 00:12:05,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:05,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:05,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:05,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:05,714 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:12:05,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:05,714 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:12:05,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:12:05,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:05,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:12:05,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:12:05,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:12:05,716 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 00:12:05,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:05,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:05,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:12:05,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:05,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:12:05,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:12:05,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:12:05,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:05,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:05,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:12:05,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:12:05,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:12:05,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:12:05,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:12:05,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:12:05,723 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_11cd78db-4667-43a6-aee1-2deebcd58b82/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01bf3c13fb8dbd0777aa4be7a3e595427bd1de37 [2020-11-30 00:12:06,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:06,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:06,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:06,120 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:06,120 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:06,123 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2020-11-30 00:12:06,207 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/data/6a83f82eb/061ae8fa25734bf88b67d390819f4dce/FLAG368aa76b0 [2020-11-30 00:12:06,786 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:06,786 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/sv-benchmarks/c/termination-crafted-lit/cstrncmp.c [2020-11-30 00:12:06,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/data/6a83f82eb/061ae8fa25734bf88b67d390819f4dce/FLAG368aa76b0 [2020-11-30 00:12:07,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/data/6a83f82eb/061ae8fa25734bf88b67d390819f4dce [2020-11-30 00:12:07,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:07,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:07,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:07,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:07,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:07,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f636e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07, skipping insertion in model container [2020-11-30 00:12:07,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:07,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:07,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:07,464 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:07,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:07,501 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:07,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07 WrapperNode [2020-11-30 00:12:07,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:07,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:07,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:07,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:07,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:07,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:07,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:07,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:07,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... [2020-11-30 00:12:07,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:07,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:07,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:07,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:07,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:12:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:12:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 00:12:07,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:07,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:07,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:12:08,086 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:08,086 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-30 00:12:08,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:08 BoogieIcfgContainer [2020-11-30 00:12:08,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:08,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:12:08,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:12:08,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:12:08,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:12:07" (1/3) ... [2020-11-30 00:12:08,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a2d1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:08, skipping insertion in model container [2020-11-30 00:12:08,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:07" (2/3) ... [2020-11-30 00:12:08,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a2d1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:12:08, skipping insertion in model container [2020-11-30 00:12:08,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:08" (3/3) ... [2020-11-30 00:12:08,099 INFO L111 eAbstractionObserver]: Analyzing ICFG cstrncmp.c [2020-11-30 00:12:08,114 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:12:08,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-30 00:12:08,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-30 00:12:08,163 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:12:08,163 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:12:08,163 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:12:08,164 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:12:08,164 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:12:08,164 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:12:08,164 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:12:08,164 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:12:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-11-30 00:12:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:12:08,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:08,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 00:12:08,191 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:12:08,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:08,198 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-11-30 00:12:08,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:08,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246264252] [2020-11-30 00:12:08,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:08,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:08,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246264252] [2020-11-30 00:12:08,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:08,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:12:08,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282395122] [2020-11-30 00:12:08,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:12:08,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:08,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:12:08,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:12:08,389 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-11-30 00:12:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:08,578 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2020-11-30 00:12:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:12:08,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 00:12:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:08,589 INFO L225 Difference]: With dead ends: 77 [2020-11-30 00:12:08,590 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 00:12:08,592 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 [2020-11-30 00:12:08,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 00:12:08,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-11-30 00:12:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 00:12:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-11-30 00:12:08,623 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 4 [2020-11-30 00:12:08,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:08,624 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-11-30 00:12:08,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:12:08,624 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-11-30 00:12:08,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:12:08,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:08,625 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 00:12:08,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:12:08,625 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:12:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-30 00:12:08,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:08,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126566867] [2020-11-30 00:12:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:08,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126566867] [2020-11-30 00:12:08,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:08,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:12:08,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307524885] [2020-11-30 00:12:08,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:12:08,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:08,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:12:08,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:12:08,658 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 3 states. [2020-11-30 00:12:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:08,709 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-30 00:12:08,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:12:08,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 00:12:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:08,710 INFO L225 Difference]: With dead ends: 38 [2020-11-30 00:12:08,710 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 00:12:08,711 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 [2020-11-30 00:12:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 00:12:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-11-30 00:12:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 00:12:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-11-30 00:12:08,716 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 4 [2020-11-30 00:12:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:08,717 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-11-30 00:12:08,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:12:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-11-30 00:12:08,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:12:08,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:08,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:12:08,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:12:08,718 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:12:08,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:08,719 INFO L82 PathProgramCache]: Analyzing trace with hash 28693859, now seen corresponding path program 1 times [2020-11-30 00:12:08,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:08,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488297473] [2020-11-30 00:12:08,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:08,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488297473] [2020-11-30 00:12:08,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:08,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:12:08,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814506391] [2020-11-30 00:12:08,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:12:08,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:08,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:12:08,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:12:08,767 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2020-11-30 00:12:08,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:08,815 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-11-30 00:12:08,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:12:08,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 00:12:08,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:08,818 INFO L225 Difference]: With dead ends: 28 [2020-11-30 00:12:08,818 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 00:12:08,819 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 [2020-11-30 00:12:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 00:12:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:12:08,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:12:08,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-30 00:12:08,823 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2020-11-30 00:12:08,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:08,823 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-30 00:12:08,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:12:08,824 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-30 00:12:08,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:12:08,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:08,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:08,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:12:08,825 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:12:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:08,826 INFO L82 PathProgramCache]: Analyzing trace with hash -442003725, now seen corresponding path program 1 times [2020-11-30 00:12:08,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:08,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010652664] [2020-11-30 00:12:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:12:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:12:08,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010652664] [2020-11-30 00:12:08,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:12:08,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:12:08,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151386660] [2020-11-30 00:12:08,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:12:08,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:12:08,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:12:08,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:12:08,969 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 4 states. [2020-11-30 00:12:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:12:09,001 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-11-30 00:12:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:12:09,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 00:12:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:12:09,002 INFO L225 Difference]: With dead ends: 24 [2020-11-30 00:12:09,002 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:12:09,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:12:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:12:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:12:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:12:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-11-30 00:12:09,007 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 17 [2020-11-30 00:12:09,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:12:09,007 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-11-30 00:12:09,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:12:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-11-30 00:12:09,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:12:09,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:12:09,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:12:09,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:12:09,008 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:12:09,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash -817213509, now seen corresponding path program 1 times [2020-11-30 00:12:09,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:09,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023571795] [2020-11-30 00:12:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:09,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:09,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:09,111 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:09,112 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:12:09,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:12:09,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:12:09 BoogieIcfgContainer [2020-11-30 00:12:09,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:12:09,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:09,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:09,146 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:09,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:08" (3/4) ... [2020-11-30 00:12:09,148 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:12:09,205 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_11cd78db-4667-43a6-aee1-2deebcd58b82/bin/uautomizer/witness.graphml [2020-11-30 00:12:09,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:09,210 INFO L168 Benchmark]: Toolchain (without parser) took 2085.78 ms. Allocated memory is still 102.8 MB. Free memory was 81.3 MB in the beginning and 41.9 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:09,211 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 81.8 MB. Free memory was 45.3 MB in the beginning and 45.3 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:09,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.58 ms. Allocated memory is still 102.8 MB. Free memory was 81.3 MB in the beginning and 80.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:09,212 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.55 ms. Allocated memory is still 102.8 MB. Free memory was 80.1 MB in the beginning and 78.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:09,213 INFO L168 Benchmark]: Boogie Preprocessor took 31.40 ms. Allocated memory is still 102.8 MB. Free memory was 78.3 MB in the beginning and 77.3 MB in the end (delta: 990.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:09,213 INFO L168 Benchmark]: RCFGBuilder took 503.36 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 59.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:09,213 INFO L168 Benchmark]: TraceAbstraction took 1054.85 ms. Allocated memory is still 102.8 MB. Free memory was 59.1 MB in the beginning and 44.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:09,214 INFO L168 Benchmark]: Witness Printer took 62.39 ms. Allocated memory is still 102.8 MB. Free memory was 44.0 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:09,221 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 81.8 MB. Free memory was 45.3 MB in the beginning and 45.3 MB in the end (delta: 66.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.58 ms. Allocated memory is still 102.8 MB. Free memory was 81.3 MB in the beginning and 80.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.55 ms. Allocated memory is still 102.8 MB. Free memory was 80.1 MB in the beginning and 78.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.40 ms. Allocated memory is still 102.8 MB. Free memory was 78.3 MB in the beginning and 77.3 MB in the end (delta: 990.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 503.36 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 59.8 MB in the end (delta: 17.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1054.85 ms. Allocated memory is still 102.8 MB. Free memory was 59.1 MB in the beginning and 44.5 MB in the end (delta: 14.6 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Witness Printer took 62.39 ms. Allocated memory is still 102.8 MB. Free memory was 44.0 MB in the beginning and 41.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 33]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L13] int length = __VERIFIER_nondet_int(); [L14] COND TRUE length < 1 [L15] length = 1 [L17] EXPR length * sizeof(char) [L17] char* nondetString = (char*) malloc(length * sizeof(char)); [L18] EXPR length-1 [L18] nondetString[length-1] = '\0' [L19] return nondetString; [L28] unsigned char uc1, uc2; [L30] COND FALSE !(n == 0) [L33] n-- - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 93 SDslu, 59 SDs, 0 SdLazy, 63 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 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...