./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.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_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/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 31d0c4253184c01eb9f9573658b07bed7aa94585 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:04:17,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:04:17,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:04:17,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:04:17,509 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:04:17,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:04:17,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:04:17,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:04:17,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:04:17,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:04:17,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:04:17,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:04:17,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:04:17,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:04:17,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:04:17,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:04:17,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:04:17,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:04:17,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:04:17,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:04:17,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:04:17,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:04:17,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:04:17,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:04:17,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:04:17,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:04:17,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:04:17,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:04:17,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:04:17,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:04:17,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:04:17,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:04:17,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:04:17,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:04:17,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:04:17,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:04:17,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:04:17,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:04:17,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:04:17,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:04:17,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:04:17,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:04:17,633 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:04:17,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:04:17,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:04:17,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:04:17,637 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:04:17,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:04:17,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:04:17,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:04:17,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:04:17,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:04:17,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:04:17,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:04:17,639 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:04:17,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:04:17,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:04:17,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:04:17,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:04:17,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:04:17,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:04:17,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:04:17,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:04:17,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:04:17,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:04:17,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:04:17,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:04:17,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:04:17,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:04:17,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:04:17,643 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_5286fc89-6d4e-4984-b774-daf8b434e70a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d0c4253184c01eb9f9573658b07bed7aa94585 [2020-11-28 03:04:17,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:04:17,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:04:17,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:04:17,978 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:04:17,979 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:04:17,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2020-11-28 03:04:18,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/data/db4989420/e944896ffeaf4e7895da09931fd60e74/FLAG20cf10b32 [2020-11-28 03:04:18,634 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:04:18,636 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2020-11-28 03:04:18,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/data/db4989420/e944896ffeaf4e7895da09931fd60e74/FLAG20cf10b32 [2020-11-28 03:04:19,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/data/db4989420/e944896ffeaf4e7895da09931fd60e74 [2020-11-28 03:04:19,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:04:19,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:04:19,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:19,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:04:19,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:04:19,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a60532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19, skipping insertion in model container [2020-11-28 03:04:19,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:04:19,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:04:19,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:19,274 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:04:19,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:04:19,342 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:04:19,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19 WrapperNode [2020-11-28 03:04:19,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:04:19,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:19,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:04:19,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:04:19,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:04:19,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:04:19,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:04:19,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:04:19,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... [2020-11-28 03:04:19,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:04:19,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:04:19,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:04:19,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:04:19,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/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 03:04:19,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:04:19,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:04:19,694 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:04:19,704 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:04:19,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:19 BoogieIcfgContainer [2020-11-28 03:04:19,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:04:19,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:04:19,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:04:19,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:04:19,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:04:19" (1/3) ... [2020-11-28 03:04:19,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1ef184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:19, skipping insertion in model container [2020-11-28 03:04:19,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:04:19" (2/3) ... [2020-11-28 03:04:19,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1ef184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:04:19, skipping insertion in model container [2020-11-28 03:04:19,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:19" (3/3) ... [2020-11-28 03:04:19,726 INFO L111 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2020-11-28 03:04:19,738 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:04:19,756 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:04:19,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:04:19,829 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:04:19,840 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:04:19,840 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:04:19,840 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:04:19,840 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:04:19,841 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:04:19,841 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:04:19,841 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:04:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-28 03:04:19,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:04:19,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:19,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:04:19,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:04:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:19,867 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2020-11-28 03:04:19,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:19,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827935696] [2020-11-28 03:04:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,032 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 03:04:20,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827935696] [2020-11-28 03:04:20,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:20,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:04:20,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375737230] [2020-11-28 03:04:20,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:20,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:20,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:20,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:20,057 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2020-11-28 03:04:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:20,128 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2020-11-28 03:04:20,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:20,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 03:04:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:20,139 INFO L225 Difference]: With dead ends: 32 [2020-11-28 03:04:20,139 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:04:20,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:04:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:04:20,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-28 03:04:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-28 03:04:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-11-28 03:04:20,176 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2020-11-28 03:04:20,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:20,177 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-11-28 03:04:20,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:20,178 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-11-28 03:04:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:04:20,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:20,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:04:20,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:04:20,179 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:04:20,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,180 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2020-11-28 03:04:20,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:20,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497697430] [2020-11-28 03:04:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,217 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 03:04:20,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497697430] [2020-11-28 03:04:20,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:20,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:04:20,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030722803] [2020-11-28 03:04:20,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:20,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:20,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:20,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:20,223 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2020-11-28 03:04:20,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:20,246 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-28 03:04:20,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:20,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 03:04:20,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:20,248 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:04:20,248 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:04:20,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:04:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-28 03:04:20,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:04:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-11-28 03:04:20,255 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2020-11-28 03:04:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:20,256 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-11-28 03:04:20,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:20,256 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-11-28 03:04:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:04:20,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:20,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:20,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:04:20,261 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:04:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166603, now seen corresponding path program 1 times [2020-11-28 03:04:20,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:20,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85471435] [2020-11-28 03:04:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:20,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85471435] [2020-11-28 03:04:20,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861005449] [2020-11-28 03:04:20,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:04:20,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:04:20,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:04:20,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2020-11-28 03:04:20,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133253692] [2020-11-28 03:04:20,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:20,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:20,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:20,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:20,389 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2020-11-28 03:04:20,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:20,408 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-11-28 03:04:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:20,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 03:04:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:20,411 INFO L225 Difference]: With dead ends: 13 [2020-11-28 03:04:20,411 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 03:04:20,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 03:04:20,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 03:04:20,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 03:04:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-28 03:04:20,415 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2020-11-28 03:04:20,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:20,415 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-28 03:04:20,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-28 03:04:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:04:20,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:20,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:04:20,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:04:20,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:04:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,629 INFO L82 PathProgramCache]: Analyzing trace with hash 784508327, now seen corresponding path program 1 times [2020-11-28 03:04:20,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:20,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585588092] [2020-11-28 03:04:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:04:20,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585588092] [2020-11-28 03:04:20,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009354613] [2020-11-28 03:04:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:20,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:04:20,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:04:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:04:20,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:04:20,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2020-11-28 03:04:20,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831280193] [2020-11-28 03:04:20,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:20,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:20,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:20,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:20,739 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2020-11-28 03:04:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:20,763 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-11-28 03:04:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:20,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:04:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:20,764 INFO L225 Difference]: With dead ends: 12 [2020-11-28 03:04:20,764 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:04:20,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:04:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:04:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:04:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:04:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 03:04:20,771 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2020-11-28 03:04:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:20,771 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 03:04:20,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 03:04:20,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:04:20,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:04:20,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2020-11-28 03:04:20,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:04:20,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:04:20,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:04:20,973 INFO L82 PathProgramCache]: Analyzing trace with hash 784510025, now seen corresponding path program 1 times [2020-11-28 03:04:20,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:04:20,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974209078] [2020-11-28 03:04:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:04:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:04:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:04:21,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974209078] [2020-11-28 03:04:21,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:04:21,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:04:21,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76652958] [2020-11-28 03:04:21,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:04:21,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:04:21,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:04:21,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:21,019 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2020-11-28 03:04:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:04:21,045 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-11-28 03:04:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:04:21,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:04:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:04:21,047 INFO L225 Difference]: With dead ends: 11 [2020-11-28 03:04:21,047 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:04:21,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:04:21,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:04:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:04:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:04:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:04:21,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-28 03:04:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:04:21,049 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:04:21,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:04:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:04:21,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:04:21,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:04:21,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:04:21,096 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:04:21,096 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:04:21,096 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 03:04:21,097 INFO L270 CegarLoopResult]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x2~0 10) (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) (<= ULTIMATE.start_main_~x1~0 10)) [2020-11-28 03:04:21,097 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2020-11-28 03:04:21,097 INFO L270 CegarLoopResult]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) [2020-11-28 03:04:21,097 INFO L274 CegarLoopResult]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2020-11-28 03:04:21,097 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2020-11-28 03:04:21,097 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-28 03:04:21,097 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:04:21,098 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:04:21,098 INFO L277 CegarLoopResult]: At program point L26(lines 14 27) the Hoare annotation is: true [2020-11-28 03:04:21,098 INFO L274 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-11-28 03:04:21,098 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 03:04:21,098 INFO L274 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-11-28 03:04:21,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:04:21 BoogieIcfgContainer [2020-11-28 03:04:21,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:04:21,125 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:04:21,125 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:04:21,125 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:04:21,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:04:19" (3/4) ... [2020-11-28 03:04:21,129 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:04:21,141 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 03:04:21,141 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:04:21,196 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5286fc89-6d4e-4984-b774-daf8b434e70a/bin/uautomizer/witness.graphml [2020-11-28 03:04:21,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:04:21,199 INFO L168 Benchmark]: Toolchain (without parser) took 2171.49 ms. Allocated memory is still 119.5 MB. Free memory was 88.2 MB in the beginning and 35.7 MB in the end (delta: 52.4 MB). Peak memory consumption was 51.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:21,200 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 72.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:21,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.32 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 97.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:21,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.38 ms. Allocated memory is still 119.5 MB. Free memory was 97.4 MB in the beginning and 95.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:21,202 INFO L168 Benchmark]: Boogie Preprocessor took 28.08 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 95.0 MB in the end (delta: 892.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:04:21,203 INFO L168 Benchmark]: RCFGBuilder took 305.13 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 85.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:21,204 INFO L168 Benchmark]: TraceAbstraction took 1406.30 ms. Allocated memory is still 119.5 MB. Free memory was 85.5 MB in the beginning and 37.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:21,209 INFO L168 Benchmark]: Witness Printer took 72.95 ms. Allocated memory is still 119.5 MB. Free memory was 37.8 MB in the beginning and 35.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:04:21,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 72.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 313.32 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 97.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.38 ms. Allocated memory is still 119.5 MB. Free memory was 97.4 MB in the beginning and 95.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.08 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 95.0 MB in the end (delta: 892.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 305.13 ms. Allocated memory is still 119.5 MB. Free memory was 95.0 MB in the beginning and 85.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1406.30 ms. Allocated memory is still 119.5 MB. Free memory was 85.5 MB in the beginning and 37.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * Witness Printer took 72.95 ms. Allocated memory is still 119.5 MB. Free memory was 37.8 MB in the beginning and 35.7 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: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x2 <= 10 && 0 <= x1 + 2147483648) && x1 <= 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 14 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/7 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...