./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.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_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:22:45,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:22:45,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:22:45,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:22:45,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:22:45,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:22:45,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:22:45,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:22:45,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:22:45,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:22:45,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:22:45,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:22:45,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:22:46,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:22:46,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:22:46,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:22:46,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:22:46,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:22:46,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:22:46,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:22:46,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:22:46,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:22:46,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:22:46,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:22:46,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:22:46,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:22:46,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:22:46,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:22:46,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:22:46,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:22:46,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:22:46,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:22:46,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:22:46,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:22:46,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:22:46,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:22:46,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:22:46,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:22:46,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:22:46,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:22:46,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:22:46,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 20:22:46,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:22:46,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:22:46,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:22:46,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:22:46,102 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:22:46,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:22:46,103 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:22:46,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:22:46,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:22:46,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:22:46,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:22:46,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:22:46,105 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 20:22:46,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:22:46,105 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:22:46,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:22:46,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:22:46,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:22:46,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:22:46,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:22:46,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:22:46,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:22:46,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:22:46,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:22:46,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:22:46,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:22:46,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:22:46,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:22:46,109 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_fa37f78d-d131-4671-85b4-aa4883b91e54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2020-11-29 20:22:46,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:22:46,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:22:46,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:22:46,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:22:46,503 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:22:46,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2020-11-29 20:22:46,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/data/ffd4e0861/3bf8c3afd7264527b5b6069d8f211dc2/FLAGaec6c47f7 [2020-11-29 20:22:47,242 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:22:47,243 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2020-11-29 20:22:47,252 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/data/ffd4e0861/3bf8c3afd7264527b5b6069d8f211dc2/FLAGaec6c47f7 [2020-11-29 20:22:47,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/data/ffd4e0861/3bf8c3afd7264527b5b6069d8f211dc2 [2020-11-29 20:22:47,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:22:47,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:22:47,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:22:47,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:22:47,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:22:47,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4faad585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47, skipping insertion in model container [2020-11-29 20:22:47,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:22:47,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:22:47,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:22:47,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:22:47,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:22:47,910 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:22:47,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47 WrapperNode [2020-11-29 20:22:47,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:22:47,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:22:47,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:22:47,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:22:47,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:22:47,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:22:47,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:22:47,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:22:47,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:47,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:48,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:48,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... [2020-11-29 20:22:48,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:22:48,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:22:48,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:22:48,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:22:48,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:22:48,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:22:48,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:22:48,411 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:22:48,411 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:22:48,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:48 BoogieIcfgContainer [2020-11-29 20:22:48,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:22:48,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:22:48,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:22:48,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:22:48,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:22:47" (1/3) ... [2020-11-29 20:22:48,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add0993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:22:48, skipping insertion in model container [2020-11-29 20:22:48,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:22:47" (2/3) ... [2020-11-29 20:22:48,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add0993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:22:48, skipping insertion in model container [2020-11-29 20:22:48,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:48" (3/3) ... [2020-11-29 20:22:48,433 INFO L111 eAbstractionObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2020-11-29 20:22:48,448 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:22:48,455 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 20:22:48,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 20:22:48,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:22:48,506 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:22:48,507 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:22:48,507 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:22:48,507 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:22:48,507 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:22:48,508 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:22:48,508 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:22:48,523 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 20:22:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 20:22:48,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:48,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 20:22:48,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:22:48,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:48,536 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-29 20:22:48,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:22:48,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672946475] [2020-11-29 20:22:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:22:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:22:49,057 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-29 20:22:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:22:49,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672946475] [2020-11-29 20:22:49,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:22:49,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:22:49,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114824923] [2020-11-29 20:22:49,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:22:49,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:22:49,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:22:49,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:22:49,120 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2020-11-29 20:22:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:22:49,301 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-11-29 20:22:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:22:49,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-29 20:22:49,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:22:49,316 INFO L225 Difference]: With dead ends: 19 [2020-11-29 20:22:49,316 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 20:22:49,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:22:49,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 20:22:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:22:49,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:22:49,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-29 20:22:49,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-11-29 20:22:49,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:22:49,365 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-29 20:22:49,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:22:49,365 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-29 20:22:49,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 20:22:49,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:49,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 20:22:49,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:22:49,367 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:22:49,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:49,368 INFO L82 PathProgramCache]: Analyzing trace with hash 963339, now seen corresponding path program 1 times [2020-11-29 20:22:49,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:22:49,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592668639] [2020-11-29 20:22:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:22:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:22:49,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:22:49,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592668639] [2020-11-29 20:22:49,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:22:49,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 20:22:49,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743556446] [2020-11-29 20:22:49,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:22:49,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:22:49,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:22:49,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:22:49,419 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-11-29 20:22:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:22:49,520 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-11-29 20:22:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:22:49,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-29 20:22:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:22:49,522 INFO L225 Difference]: With dead ends: 16 [2020-11-29 20:22:49,522 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 20:22:49,523 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 [2020-11-29 20:22:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 20:22:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-11-29 20:22:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 20:22:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2020-11-29 20:22:49,532 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 4 [2020-11-29 20:22:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:22:49,532 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2020-11-29 20:22:49,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:22:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2020-11-29 20:22:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 20:22:49,534 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:49,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 20:22:49,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:22:49,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:22:49,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:49,539 INFO L82 PathProgramCache]: Analyzing trace with hash 29869514, now seen corresponding path program 1 times [2020-11-29 20:22:49,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:22:49,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282749308] [2020-11-29 20:22:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:22:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:22:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:22:49,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282749308] [2020-11-29 20:22:49,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:22:49,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 20:22:49,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642716596] [2020-11-29 20:22:49,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:22:49,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:22:49,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:22:49,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:22:49,577 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2020-11-29 20:22:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:22:49,614 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2020-11-29 20:22:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:22:49,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 20:22:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:22:49,616 INFO L225 Difference]: With dead ends: 14 [2020-11-29 20:22:49,616 INFO L226 Difference]: Without dead ends: 13 [2020-11-29 20:22:49,617 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 [2020-11-29 20:22:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-29 20:22:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-29 20:22:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 20:22:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2020-11-29 20:22:49,651 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 5 [2020-11-29 20:22:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:22:49,651 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2020-11-29 20:22:49,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:22:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2020-11-29 20:22:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 20:22:49,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:49,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 20:22:49,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:22:49,653 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:22:49,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:49,654 INFO L82 PathProgramCache]: Analyzing trace with hash 29863556, now seen corresponding path program 1 times [2020-11-29 20:22:49,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:22:49,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137153731] [2020-11-29 20:22:49,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:22:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:22:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:22:49,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137153731] [2020-11-29 20:22:49,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:22:49,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:22:49,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919906423] [2020-11-29 20:22:49,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:22:49,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:22:49,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:22:49,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:22:49,770 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 4 states. [2020-11-29 20:22:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:22:49,826 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2020-11-29 20:22:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:22:49,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-29 20:22:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:22:49,828 INFO L225 Difference]: With dead ends: 13 [2020-11-29 20:22:49,828 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 20:22:49,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:22:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 20:22:49,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 20:22:49,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 20:22:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-29 20:22:49,833 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 5 [2020-11-29 20:22:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:22:49,834 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-29 20:22:49,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:22:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-29 20:22:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:22:49,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:22:49,837 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-29 20:22:49,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:22:49,838 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 20:22:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:22:49,839 INFO L82 PathProgramCache]: Analyzing trace with hash 784501120, now seen corresponding path program 1 times [2020-11-29 20:22:49,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:22:49,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886148728] [2020-11-29 20:22:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:22:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:22:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:22:49,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886148728] [2020-11-29 20:22:49,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:22:49,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:22:49,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491176181] [2020-11-29 20:22:49,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:22:49,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:22:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:22:49,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:22:49,923 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2020-11-29 20:22:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:22:49,988 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2020-11-29 20:22:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:22:49,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 20:22:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:22:49,989 INFO L225 Difference]: With dead ends: 21 [2020-11-29 20:22:49,989 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:22:49,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:22:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:22:49,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:22:49,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:22:49,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:22:49,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-29 20:22:49,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:22:49,991 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:22:49,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:22:49,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:22:49,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:22:49,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:22:49,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:22:50,116 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-29 20:22:50,116 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:22:50,116 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-29 20:22:50,116 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-29 20:22:50,117 INFO L274 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-11-29 20:22:50,117 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-29 20:22:50,117 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-29 20:22:50,117 INFO L274 CegarLoopResult]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2020-11-29 20:22:50,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2020-11-29 20:22:50,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2020-11-29 20:22:50,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:22:50,118 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:22:50,119 INFO L270 CegarLoopResult]: At program point L24(lines 13 25) the Hoare annotation is: (<= ULTIMATE.start_main_~K~0 2147483647) [2020-11-29 20:22:50,119 INFO L274 CegarLoopResult]: For program point L18(lines 18 22) no Hoare annotation was computed. [2020-11-29 20:22:50,120 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (<= 0 (+ ULTIMATE.start_main_~K~0 2147483648)) (<= ULTIMATE.start_main_~K~0 2147483647)) [2020-11-29 20:22:50,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:22:50 BoogieIcfgContainer [2020-11-29 20:22:50,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:22:50,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:22:50,145 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:22:50,145 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:22:50,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:22:48" (3/4) ... [2020-11-29 20:22:50,150 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:22:50,168 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-29 20:22:50,168 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 20:22:50,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fa37f78d-d131-4671-85b4-aa4883b91e54/bin/uautomizer/witness.graphml [2020-11-29 20:22:50,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:22:50,235 INFO L168 Benchmark]: Toolchain (without parser) took 2637.51 ms. Allocated memory is still 98.6 MB. Free memory was 67.3 MB in the beginning and 56.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:50,236 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 75.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:22:50,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.34 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 77.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:50,247 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.25 ms. Allocated memory is still 98.6 MB. Free memory was 77.5 MB in the beginning and 76.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:22:50,248 INFO L168 Benchmark]: Boogie Preprocessor took 43.33 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 75.1 MB in the end (delta: 929.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:22:50,249 INFO L168 Benchmark]: RCFGBuilder took 403.92 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 66.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:50,251 INFO L168 Benchmark]: TraceAbstraction took 1725.44 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 58.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:50,252 INFO L168 Benchmark]: Witness Printer took 88.66 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 56.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:22:50,259 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 75.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.34 ms. Allocated memory is still 98.6 MB. Free memory was 67.1 MB in the beginning and 77.5 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.25 ms. Allocated memory is still 98.6 MB. Free memory was 77.5 MB in the beginning and 76.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.33 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 75.1 MB in the end (delta: 929.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 403.92 ms. Allocated memory is still 98.6 MB. Free memory was 75.1 MB in the beginning and 66.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1725.44 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 58.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 88.66 ms. Allocated memory is still 98.6 MB. Free memory was 58.4 MB in the beginning and 56.3 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: - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((x <= 2147483647 && 0 <= x + 2147483648) && 0 <= K + 2147483648) && K <= 2147483647 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: K <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 44 SDslu, 3 SDs, 0 SdLazy, 75 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 18 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 337 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 2/2 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 correct! Received shutdown request...