./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_nondet.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_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_nondet.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/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 de94f0c7b8482738d507216e71ac3b33c5f9a9e3 ............................................................................................................................................................................................................................................................................................................... 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 [2020-11-28 03:14:17,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:14:17,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:14:18,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:14:18,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:14:18,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:14:18,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:14:18,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:14:18,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:18,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:18,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:18,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:18,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:18,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:18,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:18,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:18,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:18,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:18,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:18,116 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:18,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:18,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:18,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:18,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:18,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:18,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:18,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:18,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:18,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:18,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:18,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:18,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:18,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:18,148 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:18,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:18,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:18,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:18,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:18,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:18,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:18,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:18,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:14:18,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:18,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:18,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:18,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:18,190 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:18,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:18,190 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:14:18,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:18,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:18,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:14:18,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:14:18,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:14:18,192 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:14:18,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:18,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:18,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:14:18,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:18,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:18,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:14:18,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:14:18,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:14:18,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:18,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:14:18,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:14:18,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:18,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:14:18,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:14:18,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:18,199 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_c91b795e-2d99-4ea5-854f-d46ef8d220fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de94f0c7b8482738d507216e71ac3b33c5f9a9e3 [2020-11-28 03:14:18,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:18,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:18,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:18,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:18,597 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:18,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Cairo_nondet.c [2020-11-28 03:14:18,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/data/5ff9cca8b/0d4f903ec07f41399b20726faff7de17/FLAGc4092b06a [2020-11-28 03:14:19,291 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:19,296 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/sv-benchmarks/c/termination-crafted/Cairo_nondet.c [2020-11-28 03:14:19,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/data/5ff9cca8b/0d4f903ec07f41399b20726faff7de17/FLAGc4092b06a [2020-11-28 03:14:19,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/data/5ff9cca8b/0d4f903ec07f41399b20726faff7de17 [2020-11-28 03:14:19,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:19,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:19,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:19,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:19,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:19,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f19beb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19, skipping insertion in model container [2020-11-28 03:14:19,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:19,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:19,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:19,865 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:19,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:19,903 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:19,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19 WrapperNode [2020-11-28 03:14:19,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:19,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:19,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:19,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:19,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:19,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:19,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:19,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:19,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... [2020-11-28 03:14:19,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:19,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:19,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:19,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:19,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/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 [2020-11-28 03:14:20,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:20,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:20,251 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:20,252 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:14:20,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:20 BoogieIcfgContainer [2020-11-28 03:14:20,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:20,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:14:20,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:14:20,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:14:20,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:14:19" (1/3) ... [2020-11-28 03:14:20,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b3c034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:20, skipping insertion in model container [2020-11-28 03:14:20,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:19" (2/3) ... [2020-11-28 03:14:20,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b3c034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:14:20, skipping insertion in model container [2020-11-28 03:14:20,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:20" (3/3) ... [2020-11-28 03:14:20,268 INFO L111 eAbstractionObserver]: Analyzing ICFG Cairo_nondet.c [2020-11-28 03:14:20,279 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:14:20,283 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:14:20,301 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:14:20,335 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:14:20,335 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:14:20,335 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:14:20,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:20,336 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:20,336 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:14:20,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:20,336 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:14:20,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 03:14:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:14:20,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:20,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:14:20,357 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:20,373 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2020-11-28 03:14:20,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:20,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743533792] [2020-11-28 03:14:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:20,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743533792] [2020-11-28 03:14:20,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:20,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:14:20,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656820994] [2020-11-28 03:14:20,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:14:20,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:20,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:14:20,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:20,587 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-11-28 03:14:20,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:20,831 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 03:14:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:14:20,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 03:14:20,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:20,845 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:14:20,845 INFO L226 Difference]: Without dead ends: 6 [2020-11-28 03:14:20,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:14:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2020-11-28 03:14:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-28 03:14:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:14:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-28 03:14:20,893 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2020-11-28 03:14:20,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:20,895 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-28 03:14:20,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:14:20,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2020-11-28 03:14:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:14:20,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:20,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:14:20,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:14:20,898 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:20,902 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2020-11-28 03:14:20,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:20,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534278502] [2020-11-28 03:14:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:21,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:21,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534278502] [2020-11-28 03:14:21,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:21,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:14:21,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128995165] [2020-11-28 03:14:21,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:14:21,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:21,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:21,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:21,030 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2020-11-28 03:14:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:21,088 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 03:14:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:14:21,089 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 03:14:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:14:21,089 INFO L225 Difference]: With dead ends: 10 [2020-11-28 03:14:21,090 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:14:21,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:21,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:14:21,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:14:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:14:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 03:14:21,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2020-11-28 03:14:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:14:21,095 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 03:14:21,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:14:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 03:14:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:14:21,096 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:14:21,096 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2020-11-28 03:14:21,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:14:21,097 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:14:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:21,099 INFO L82 PathProgramCache]: Analyzing trace with hash -423045501, now seen corresponding path program 1 times [2020-11-28 03:14:21,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:21,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681903025] [2020-11-28 03:14:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:21,129 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:21,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:21,178 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:21,178 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:14:21,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:14:21,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:14:21 BoogieIcfgContainer [2020-11-28 03:14:21,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:14:21,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:21,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:21,203 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:21,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:20" (3/4) ... [2020-11-28 03:14:21,207 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:14:21,262 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c91b795e-2d99-4ea5-854f-d46ef8d220fe/bin/uautomizer/witness.graphml [2020-11-28 03:14:21,262 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:21,265 INFO L168 Benchmark]: Toolchain (without parser) took 1624.07 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 77.1 MB in the beginning and 75.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:21,266 INFO L168 Benchmark]: CDTParser took 1.05 ms. Allocated memory is still 104.9 MB. Free memory was 62.2 MB in the beginning and 62.1 MB in the end (delta: 41.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:21,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.58 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 77.1 MB in the beginning and 114.1 MB in the end (delta: -37.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:21,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 136.3 MB. Free memory was 114.1 MB in the beginning and 112.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:21,273 INFO L168 Benchmark]: Boogie Preprocessor took 22.64 ms. Allocated memory is still 136.3 MB. Free memory was 112.8 MB in the beginning and 111.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:21,277 INFO L168 Benchmark]: RCFGBuilder took 276.33 ms. Allocated memory is still 136.3 MB. Free memory was 111.8 MB in the beginning and 103.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:21,278 INFO L168 Benchmark]: TraceAbstraction took 945.34 ms. Allocated memory is still 136.3 MB. Free memory was 102.7 MB in the beginning and 77.2 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:21,279 INFO L168 Benchmark]: Witness Printer took 61.00 ms. Allocated memory is still 136.3 MB. Free memory was 77.2 MB in the beginning and 75.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:21,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05 ms. Allocated memory is still 104.9 MB. Free memory was 62.2 MB in the beginning and 62.1 MB in the end (delta: 41.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.58 ms. Allocated memory was 104.9 MB in the beginning and 136.3 MB in the end (delta: 31.5 MB). Free memory was 77.1 MB in the beginning and 114.1 MB in the end (delta: -37.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.39 ms. Allocated memory is still 136.3 MB. Free memory was 114.1 MB in the beginning and 112.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.64 ms. Allocated memory is still 136.3 MB. Free memory was 112.8 MB in the beginning and 111.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 276.33 ms. Allocated memory is still 136.3 MB. Free memory was 111.8 MB in the beginning and 103.2 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 945.34 ms. Allocated memory is still 136.3 MB. Free memory was 102.7 MB in the beginning and 77.2 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.00 ms. Allocated memory is still 136.3 MB. Free memory was 77.2 MB in the beginning and 75.6 MB in the end (delta: 1.6 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: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] x = __VERIFIER_nondet_int() [L15] COND TRUE x > __VERIFIER_nondet_int() [L16] COND TRUE x != 0 [L17] EXPR x - 1 [L17] x = x - 1 [L16] COND TRUE x != 0 [L17] x - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 7 SDslu, 1 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...