./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b5c32c4c87bee5873040844586411da3e695cd61 ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:10,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:10,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:10,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:10,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:10,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:10,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:10,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:10,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:10,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:10,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:10,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:10,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:10,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:10,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:10,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:10,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:10,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:10,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:10,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:10,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:10,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:10,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:10,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:10,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:10,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:10,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:10,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:10,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:10,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:10,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:10,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:10,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:10,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:10,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:10,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:10,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:10,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:10,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:10,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:10,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:10,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:29:10,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:10,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:10,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:10,658 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:10,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:10,659 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:10,659 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:10,659 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:10,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:10,666 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:10,667 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:10,667 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:10,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:10,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:10,668 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:10,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:10,669 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:10,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:29:10,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:10,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:10,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:10,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:10,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:10,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:10,670 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:29:10,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:10,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:10,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:10,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:10,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:10,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:10,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:10,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:10,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:10,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:10,673 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:10,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:10,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:10,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:10,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:10,674 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5c32c4c87bee5873040844586411da3e695cd61 [2021-10-11 02:29:10,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:10,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:10,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:10,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:10,992 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:10,993 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i [2021-10-11 02:29:11,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/data/413fcebfb/74d051e19a534827bae11d19cc0de699/FLAGe5b041e97 [2021-10-11 02:29:11,542 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:11,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i [2021-10-11 02:29:11,557 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/data/413fcebfb/74d051e19a534827bae11d19cc0de699/FLAGe5b041e97 [2021-10-11 02:29:11,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/data/413fcebfb/74d051e19a534827bae11d19cc0de699 [2021-10-11 02:29:11,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:11,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:11,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:11,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:11,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:11,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e77885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:11, skipping insertion in model container [2021-10-11 02:29:11,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:11" (1/1) ... [2021-10-11 02:29:11,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:11,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:12,132 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i[873,886] [2021-10-11 02:29:12,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:12,148 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:12,161 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/sv-benchmarks/c/loop-zilu/benchmark31_disjunctive.i[873,886] [2021-10-11 02:29:12,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:12,178 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:12,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12 WrapperNode [2021-10-11 02:29:12,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:12,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:12,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:12,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:12,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:12,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:12,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:12,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:12,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... [2021-10-11 02:29:12,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:12,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:12,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:12,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:12,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:12,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:12,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:12,566 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:29:12,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:12 BoogieIcfgContainer [2021-10-11 02:29:12,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:12,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:12,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:12,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:12,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:11" (1/3) ... [2021-10-11 02:29:12,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fd48fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:12, skipping insertion in model container [2021-10-11 02:29:12,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:12" (2/3) ... [2021-10-11 02:29:12,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fd48fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:12, skipping insertion in model container [2021-10-11 02:29:12,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:12" (3/3) ... [2021-10-11 02:29:12,591 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark31_disjunctive.i [2021-10-11 02:29:12,605 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:12,608 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-10-11 02:29:12,619 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-11 02:29:12,671 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:12,671 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:12,671 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:12,671 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:12,672 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:12,672 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:12,672 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:12,672 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:12,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-10-11 02:29:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:29:12,704 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:12,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:29:12,705 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:12,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:12,711 INFO L82 PathProgramCache]: Analyzing trace with hash 69488661, now seen corresponding path program 1 times [2021-10-11 02:29:12,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:12,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393123143] [2021-10-11 02:29:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:12,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393123143] [2021-10-11 02:29:12,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:12,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:12,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080820976] [2021-10-11 02:29:12,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:12,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:12,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:12,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:12,936 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2021-10-11 02:29:13,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:13,009 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-11 02:29:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:29:13,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:29:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:13,020 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:29:13,020 INFO L226 Difference]: Without dead ends: 21 [2021-10-11 02:29:13,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:13,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-11 02:29:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-10-11 02:29:13,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:29:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 02:29:13,056 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2021-10-11 02:29:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:13,057 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 02:29:13,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 02:29:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:13,058 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:13,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:13,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:13,058 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:29:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:13,060 INFO L82 PathProgramCache]: Analyzing trace with hash -2140818750, now seen corresponding path program 1 times [2021-10-11 02:29:13,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:13,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094261845] [2021-10-11 02:29:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:13,078 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:13,093 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:13,111 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:13,111 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:13,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:13,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:13 BoogieIcfgContainer [2021-10-11 02:29:13,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:13,133 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:13,133 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:13,133 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:13,134 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:12" (3/4) ... [2021-10-11 02:29:13,136 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:13,170 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2701aec-ac4a-4fe0-b7fd-a793093eb3d2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:13,171 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:13,173 INFO L168 Benchmark]: Toolchain (without parser) took 1255.73 ms. Allocated memory is still 109.1 MB. Free memory was 79.7 MB in the beginning and 39.9 MB in the end (delta: 39.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:13,173 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 67.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:13,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.26 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 85.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:13,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.71 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 83.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:13,175 INFO L168 Benchmark]: Boogie Preprocessor took 20.47 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 82.6 MB in the end (delta: 956.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:13,176 INFO L168 Benchmark]: RCFGBuilder took 335.42 ms. Allocated memory is still 109.1 MB. Free memory was 82.6 MB in the beginning and 68.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:13,176 INFO L168 Benchmark]: TraceAbstraction took 562.34 ms. Allocated memory is still 109.1 MB. Free memory was 67.6 MB in the beginning and 41.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:13,177 INFO L168 Benchmark]: Witness Printer took 37.65 ms. Allocated memory is still 109.1 MB. Free memory was 41.6 MB in the beginning and 39.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:13,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 67.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.26 ms. Allocated memory is still 109.1 MB. Free memory was 79.3 MB in the beginning and 85.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.71 ms. Allocated memory is still 109.1 MB. Free memory was 84.7 MB in the beginning and 83.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.47 ms. Allocated memory is still 109.1 MB. Free memory was 83.5 MB in the beginning and 82.6 MB in the end (delta: 956.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 335.42 ms. Allocated memory is still 109.1 MB. Free memory was 82.6 MB in the beginning and 68.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 562.34 ms. Allocated memory is still 109.1 MB. Free memory was 67.6 MB in the beginning and 41.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 37.65 ms. Allocated memory is still 109.1 MB. Free memory was 41.6 MB in the beginning and 39.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x < 0)) [L23] COND TRUE 1 [L24] COND FALSE !(x>=0) [L27] x+y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 17 SDslu, 12 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 1 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...