./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark27_linear.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_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/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_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/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_99e894ac-25ce-48e5-8135-ad527c9d6abe/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 d74be85e157db5a333b620e4febf366c094179ee ...................................................................................................................................................................................................................................................................................... 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 02:21:08,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:08,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:08,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:08,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:08,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:08,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:08,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:08,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:08,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:08,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:08,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:08,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:08,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:08,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:08,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:08,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:08,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:08,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:08,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:08,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:08,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:08,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:08,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:08,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:08,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:08,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:08,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:08,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:08,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:08,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:08,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:08,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:08,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:08,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:08,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:08,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:08,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:08,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:08,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:08,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:08,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-11 02:21:08,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:08,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:08,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:08,182 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:08,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:08,183 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:08,183 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:08,183 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:08,183 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:08,184 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:08,184 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:08,184 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:08,184 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:08,185 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:08,185 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:08,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:08,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:08,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 02:21:08,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:08,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:08,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:08,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:08,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:08,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:08,187 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-11 02:21:08,188 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:08,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:08,188 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:08,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:08,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:08,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:08,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:08,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:08,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:08,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:08,190 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:08,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:08,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:08,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:08,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:08,191 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_99e894ac-25ce-48e5-8135-ad527c9d6abe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d74be85e157db5a333b620e4febf366c094179ee [2021-10-11 02:21:08,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:08,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:08,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:08,510 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:08,511 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:08,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2021-10-11 02:21:08,599 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/data/91b21b44f/4d9a7ece0e414bc98b5bf20b26f2eac4/FLAGb282dbda9 [2021-10-11 02:21:09,047 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:09,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/sv-benchmarks/c/loop-zilu/benchmark27_linear.i [2021-10-11 02:21:09,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/data/91b21b44f/4d9a7ece0e414bc98b5bf20b26f2eac4/FLAGb282dbda9 [2021-10-11 02:21:09,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/data/91b21b44f/4d9a7ece0e414bc98b5bf20b26f2eac4 [2021-10-11 02:21:09,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:09,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:09,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:09,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:09,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:09,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc49649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09, skipping insertion in model container [2021-10-11 02:21:09,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:09,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:09,604 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_99e894ac-25ce-48e5-8135-ad527c9d6abe/sv-benchmarks/c/loop-zilu/benchmark27_linear.i[868,881] [2021-10-11 02:21:09,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:09,620 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:09,639 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_99e894ac-25ce-48e5-8135-ad527c9d6abe/sv-benchmarks/c/loop-zilu/benchmark27_linear.i[868,881] [2021-10-11 02:21:09,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:09,663 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:09,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09 WrapperNode [2021-10-11 02:21:09,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:09,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:09,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:09,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:09,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:09,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:09,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:09,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:09,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... [2021-10-11 02:21:09,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:09,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:09,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:09,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:09,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/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 02:21:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:09,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:09,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:10,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:10,083 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:21:10,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:10 BoogieIcfgContainer [2021-10-11 02:21:10,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:10,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:10,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:10,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:10,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:09" (1/3) ... [2021-10-11 02:21:10,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f48ce1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:10, skipping insertion in model container [2021-10-11 02:21:10,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:09" (2/3) ... [2021-10-11 02:21:10,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f48ce1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:10, skipping insertion in model container [2021-10-11 02:21:10,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:10" (3/3) ... [2021-10-11 02:21:10,095 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark27_linear.i [2021-10-11 02:21:10,108 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:10,123 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:21:10,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:21:10,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:10,157 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:10,157 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:10,157 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:10,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:10,158 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:10,158 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:10,158 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:10,172 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-10-11 02:21:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:21:10,176 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:10,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:21:10,177 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:21:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:10,183 INFO L82 PathProgramCache]: Analyzing trace with hash 77041, now seen corresponding path program 1 times [2021-10-11 02:21:10,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:10,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028243289] [2021-10-11 02:21:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:10,481 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 02:21:10,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028243289] [2021-10-11 02:21:10,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:10,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:10,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259569477] [2021-10-11 02:21:10,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:10,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:10,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:10,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:10,504 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2021-10-11 02:21:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:10,581 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-10-11 02:21:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:10,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2021-10-11 02:21:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:10,591 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:21:10,591 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:21:10,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:21:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-10-11 02:21:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:21:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-11 02:21:10,624 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 3 [2021-10-11 02:21:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:10,625 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-11 02:21:10,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-11 02:21:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:21:10,626 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:10,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:21:10,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:10,627 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2021-10-11 02:21:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:10,628 INFO L82 PathProgramCache]: Analyzing trace with hash 2388310, now seen corresponding path program 1 times [2021-10-11 02:21:10,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:10,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024698597] [2021-10-11 02:21:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:10,649 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:10,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:10,683 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:10,683 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:10,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:21:10,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:10 BoogieIcfgContainer [2021-10-11 02:21:10,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:10,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:10,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:10,706 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:10,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:10" (3/4) ... [2021-10-11 02:21:10,708 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:21:10,741 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99e894ac-25ce-48e5-8135-ad527c9d6abe/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:10,741 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:10,743 INFO L168 Benchmark]: Toolchain (without parser) took 1330.82 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 65.7 MB in the end (delta: 36.2 MB). Peak memory consumption was 33.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,744 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 110.4 MB in the beginning and 110.4 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:10,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.64 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 112.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.33 ms. Allocated memory is still 138.4 MB. Free memory was 112.5 MB in the beginning and 111.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,746 INFO L168 Benchmark]: Boogie Preprocessor took 20.03 ms. Allocated memory is still 138.4 MB. Free memory was 111.1 MB in the beginning and 109.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,747 INFO L168 Benchmark]: RCFGBuilder took 359.26 ms. Allocated memory is still 138.4 MB. Free memory was 109.8 MB in the beginning and 93.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,748 INFO L168 Benchmark]: TraceAbstraction took 617.88 ms. Allocated memory is still 138.4 MB. Free memory was 92.3 MB in the beginning and 67.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,748 INFO L168 Benchmark]: Witness Printer took 36.15 ms. Allocated memory is still 138.4 MB. Free memory was 67.8 MB in the beginning and 65.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:10,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 110.4 MB in the beginning and 110.4 MB in the end (delta: 27.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.64 ms. Allocated memory is still 138.4 MB. Free memory was 101.7 MB in the beginning and 112.5 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.33 ms. Allocated memory is still 138.4 MB. Free memory was 112.5 MB in the beginning and 111.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.03 ms. Allocated memory is still 138.4 MB. Free memory was 111.1 MB in the beginning and 109.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 359.26 ms. Allocated memory is still 138.4 MB. Free memory was 109.8 MB in the beginning and 93.0 MB in the end (delta: 16.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 617.88 ms. Allocated memory is still 138.4 MB. Free memory was 92.3 MB in the beginning and 67.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 36.15 ms. Allocated memory is still 138.4 MB. Free memory was 67.8 MB in the beginning and 65.7 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: - CounterExampleResult [Line: 23]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int i = __VERIFIER_nondet_int(); [L21] int j = __VERIFIER_nondet_int(); [L22] int k = __VERIFIER_nondet_int(); [L23] ii-j [L23] i-j - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 28 SDslu, 1 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 2 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 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...