./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/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 46206f7a86b26e5772618ef155399955c07418b5 .......................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:02:20,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:20,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:20,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:20,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:20,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:20,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:20,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:20,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:20,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:20,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:20,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:20,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:20,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:20,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:20,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:20,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:20,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:20,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:20,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:20,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:20,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:20,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:20,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:20,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:20,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:20,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:20,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:20,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:20,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:20,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:20,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:20,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:20,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:20,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:20,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:20,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:20,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:20,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:20,721 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:20,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:20,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 09:02:20,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:20,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:20,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:20,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:20,748 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:20,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:20,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:02:20,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:20,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:20,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:20,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:20,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:20,749 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 09:02:20,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:20,749 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:20,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:20,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:20,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:20,752 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:20,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:20,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:20,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:20,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:20,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:20,753 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:20,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:20,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:20,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/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 -> 46206f7a86b26e5772618ef155399955c07418b5 [2019-10-22 09:02:20,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:20,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:20,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:20,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:20,814 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:20,817 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2019-10-22 09:02:20,886 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/data/b82decc3f/254f749232f74ffdae4ac9d174e99936/FLAG1a8303911 [2019-10-22 09:02:21,272 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:21,272 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/sv-benchmarks/c/termination-crafted/Toulouse-BranchesToLoop-1.c [2019-10-22 09:02:21,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/data/b82decc3f/254f749232f74ffdae4ac9d174e99936/FLAG1a8303911 [2019-10-22 09:02:21,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/data/b82decc3f/254f749232f74ffdae4ac9d174e99936 [2019-10-22 09:02:21,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:21,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:21,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:21,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:21,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:21,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af3be52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21, skipping insertion in model container [2019-10-22 09:02:21,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,312 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:21,328 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:21,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:21,499 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:21,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:21,626 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:21,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21 WrapperNode [2019-10-22 09:02:21,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:21,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:21,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:21,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:21,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:21,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:21,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:21,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:21,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... [2019-10-22 09:02:21,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:21,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:21,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:21,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:21,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/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 [2019-10-22 09:02:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:21,964 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:21,964 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 09:02:21,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:21 BoogieIcfgContainer [2019-10-22 09:02:21,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:21,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:21,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:21,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:21,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:21" (1/3) ... [2019-10-22 09:02:21,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ee0d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:21, skipping insertion in model container [2019-10-22 09:02:21,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:21" (2/3) ... [2019-10-22 09:02:21,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ee0d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:21, skipping insertion in model container [2019-10-22 09:02:21,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:21" (3/3) ... [2019-10-22 09:02:21,975 INFO L109 eAbstractionObserver]: Analyzing ICFG Toulouse-BranchesToLoop-1.c [2019-10-22 09:02:21,986 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:21,994 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 09:02:22,006 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 09:02:22,031 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:22,031 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:22,032 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:22,032 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:22,038 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:22,039 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:22,039 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:22,039 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:22,061 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 09:02:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-10-22 09:02:22,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:22,080 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-10-22 09:02:22,082 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:22,101 INFO L82 PathProgramCache]: Analyzing trace with hash 957637, now seen corresponding path program 1 times [2019-10-22 09:02:22,113 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:22,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301628107] [2019-10-22 09:02:22,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:22,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:22,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:22,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301628107] [2019-10-22 09:02:22,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:22,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:02:22,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258677915] [2019-10-22 09:02:22,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:22,278 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:22,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:22,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:22,291 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-10-22 09:02:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:22,356 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-22 09:02:22,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:22,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-10-22 09:02:22,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:22,368 INFO L225 Difference]: With dead ends: 19 [2019-10-22 09:02:22,369 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 09:02:22,372 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 09:02:22,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 09:02:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 09:02:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 09:02:22,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2019-10-22 09:02:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:22,398 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 09:02:22,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 09:02:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:22,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:22,399 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:22,399 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash 29686796, now seen corresponding path program 1 times [2019-10-22 09:02:22,400 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:22,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943792976] [2019-10-22 09:02:22,400 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:22,401 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:22,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:02:22,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943792976] [2019-10-22 09:02:22,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:22,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:02:22,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036193045] [2019-10-22 09:02:22,437 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:22,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:22,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:22,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:22,439 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-10-22 09:02:22,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:22,487 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-10-22 09:02:22,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:02:22,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 09:02:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:22,488 INFO L225 Difference]: With dead ends: 14 [2019-10-22 09:02:22,488 INFO L226 Difference]: Without dead ends: 13 [2019-10-22 09:02:22,489 INFO L600 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 [2019-10-22 09:02:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-22 09:02:22,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-22 09:02:22,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 09:02:22,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-22 09:02:22,492 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2019-10-22 09:02:22,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:22,493 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-22 09:02:22,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:22,493 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-22 09:02:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:02:22,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:22,494 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:02:22,494 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:02:22,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:22,495 INFO L82 PathProgramCache]: Analyzing trace with hash 29746378, now seen corresponding path program 1 times [2019-10-22 09:02:22,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:22,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364441704] [2019-10-22 09:02:22,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:22,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:22,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:02:22,536 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:02:22,536 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:02:22,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:22 BoogieIcfgContainer [2019-10-22 09:02:22,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:22,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:22,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:22,554 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:22,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:21" (3/4) ... [2019-10-22 09:02:22,556 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:02:22,592 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_15bd9ba2-d648-4cbb-aca2-7947767acd47/bin/uautomizer/witness.graphml [2019-10-22 09:02:22,593 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:22,595 INFO L168 Benchmark]: Toolchain (without parser) took 1300.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -151.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:22,595 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:22,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -212.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:22,596 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:22,597 INFO L168 Benchmark]: Boogie Preprocessor took 21.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:22,597 INFO L168 Benchmark]: RCFGBuilder took 281.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:22,598 INFO L168 Benchmark]: TraceAbstraction took 585.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:22,599 INFO L168 Benchmark]: Witness Printer took 39.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:22,602 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -212.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 281.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 585.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * Witness Printer took 39.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x; [L15] int y; [L16] int z; [L17] y = __VERIFIER_nondet_int() [L18] z = __VERIFIER_nondet_int() [L19] COND FALSE !(__VERIFIER_nondet_int() != 0) [L22] x = -1 [L24] COND TRUE y<100 && z<100 [L25] y+x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 24 SDslu, 3 SDs, 0 SdLazy, 31 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...