./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan --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 091ae9d10f73e4826e5ce40c092816900bcc502a ...................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-30 03:33:35,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:33:35,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:33:36,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:33:36,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:33:36,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:33:36,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:33:36,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:33:36,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:33:36,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:33:36,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:33:36,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:33:36,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:33:36,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:33:36,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:33:36,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:33:36,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:33:36,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:33:36,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:33:36,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:33:36,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:33:36,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:33:36,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:33:36,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:33:36,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:33:36,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:33:36,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:33:36,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:33:36,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:33:36,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:33:36,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:33:36,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:33:36,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:33:36,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:33:36,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:33:36,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:33:36,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:33:36,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:33:36,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:33:36,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:33:36,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:33:36,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 03:33:36,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:33:36,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:33:36,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:33:36,206 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:33:36,206 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:33:36,206 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:33:36,206 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:33:36,207 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:33:36,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:33:36,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:33:36,209 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:33:36,209 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:33:36,209 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:33:36,210 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:33:36,210 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:33:36,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:33:36,212 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:33:36,212 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 03:33:36,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:33:36,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:33:36,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:33:36,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:33:36,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:33:36,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:33:36,214 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 03:33:36,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:33:36,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:33:36,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:33:36,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:33:36,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:33:36,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:33:36,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:33:36,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:33:36,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:33:36,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:33:36,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:33:36,220 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:33:36,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:33:36,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:33:36,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:33:36,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:33:36,221 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-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 091ae9d10f73e4826e5ce40c092816900bcc502a [2020-11-30 03:33:36,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:33:36,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:33:36,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:33:36,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:33:36,636 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:33:36,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2020-11-30 03:33:36,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/data/63673d702/82281a5d989047c987fcfc84ebc365c5/FLAGf12589d40 [2020-11-30 03:33:37,244 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:33:37,244 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2020-11-30 03:33:37,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/data/63673d702/82281a5d989047c987fcfc84ebc365c5/FLAGf12589d40 [2020-11-30 03:33:37,609 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/data/63673d702/82281a5d989047c987fcfc84ebc365c5 [2020-11-30 03:33:37,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:33:37,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:33:37,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:33:37,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:33:37,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:33:37,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44919a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37, skipping insertion in model container [2020-11-30 03:33:37,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:33:37,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:33:37,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:33:37,862 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:33:37,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:33:37,899 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:33:37,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37 WrapperNode [2020-11-30 03:33:37,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:33:37,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:33:37,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:33:37,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:33:37,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:33:37,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:33:37,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:33:37,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:33:37,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... [2020-11-30 03:33:37,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:33:37,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:33:37,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:33:37,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:33:37,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:33:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:33:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:33:38,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:33:38,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:33:38,586 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:33:38,586 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 03:33:38,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:38 BoogieIcfgContainer [2020-11-30 03:33:38,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:33:38,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:33:38,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:33:38,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:33:38,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:33:37" (1/3) ... [2020-11-30 03:33:38,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e42b342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:33:38, skipping insertion in model container [2020-11-30 03:33:38,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:33:37" (2/3) ... [2020-11-30 03:33:38,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e42b342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:33:38, skipping insertion in model container [2020-11-30 03:33:38,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:38" (3/3) ... [2020-11-30 03:33:38,600 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark47_linear.i [2020-11-30 03:33:38,615 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:33:38,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-11-30 03:33:38,636 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-11-30 03:33:38,679 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:33:38,681 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:33:38,681 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:33:38,682 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:33:38,682 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:33:38,682 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:33:38,683 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:33:38,683 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:33:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 03:33:38,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 03:33:38,723 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:33:38,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 03:33:38,725 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:33:38,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:33:38,734 INFO L82 PathProgramCache]: Analyzing trace with hash 99041269, now seen corresponding path program 1 times [2020-11-30 03:33:38,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:33:38,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906754864] [2020-11-30 03:33:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:33:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:33:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:33:38,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906754864] [2020-11-30 03:33:38,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:33:38,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:33:38,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131997019] [2020-11-30 03:33:38,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 03:33:38,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:33:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 03:33:39,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:33:39,010 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-11-30 03:33:39,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:33:39,100 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-11-30 03:33:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:33:39,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 03:33:39,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:33:39,119 INFO L225 Difference]: With dead ends: 29 [2020-11-30 03:33:39,129 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 03:33:39,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 03:33:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 03:33:39,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 03:33:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 03:33:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-11-30 03:33:39,183 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2020-11-30 03:33:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:33:39,184 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-11-30 03:33:39,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 03:33:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-11-30 03:33:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 03:33:39,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:33:39,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 03:33:39,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:33:39,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 03:33:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:33:39,186 INFO L82 PathProgramCache]: Analyzing trace with hash 99041461, now seen corresponding path program 1 times [2020-11-30 03:33:39,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:33:39,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882729457] [2020-11-30 03:33:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:33:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:33:39,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:33:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:33:39,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:33:39,268 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 03:33:39,268 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:33:39,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:33:39,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:33:39 BoogieIcfgContainer [2020-11-30 03:33:39,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:33:39,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:33:39,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:33:39,293 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:33:39,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:33:38" (3/4) ... [2020-11-30 03:33:39,296 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 03:33:39,333 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_54ba809e-63ad-4c5e-9cd8-0bc1181a0d0d/bin/utaipan/witness.graphml [2020-11-30 03:33:39,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:33:39,336 INFO L168 Benchmark]: Toolchain (without parser) took 1721.70 ms. Allocated memory is still 121.6 MB. Free memory was 87.6 MB in the beginning and 50.3 MB in the end (delta: 37.3 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:39,337 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 37.2 MB in the beginning and 37.2 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:33:39,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.07 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 95.8 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:39,339 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.81 ms. Allocated memory is still 121.6 MB. Free memory was 95.8 MB in the beginning and 94.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:39,340 INFO L168 Benchmark]: Boogie Preprocessor took 26.41 ms. Allocated memory is still 121.6 MB. Free memory was 94.4 MB in the beginning and 93.7 MB in the end (delta: 654.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:33:39,341 INFO L168 Benchmark]: RCFGBuilder took 616.18 ms. Allocated memory is still 121.6 MB. Free memory was 93.7 MB in the beginning and 75.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:39,342 INFO L168 Benchmark]: TraceAbstraction took 701.19 ms. Allocated memory is still 121.6 MB. Free memory was 74.8 MB in the beginning and 51.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:39,342 INFO L168 Benchmark]: Witness Printer took 41.79 ms. Allocated memory is still 121.6 MB. Free memory was 51.8 MB in the beginning and 50.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:33:39,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 37.2 MB in the beginning and 37.2 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.07 ms. Allocated memory is still 121.6 MB. Free memory was 87.4 MB in the beginning and 95.8 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.81 ms. Allocated memory is still 121.6 MB. Free memory was 95.8 MB in the beginning and 94.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.41 ms. Allocated memory is still 121.6 MB. Free memory was 94.4 MB in the beginning and 93.7 MB in the end (delta: 654.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 616.18 ms. Allocated memory is still 121.6 MB. Free memory was 93.7 MB in the beginning and 75.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 701.19 ms. Allocated memory is still 121.6 MB. Free memory was 74.8 MB in the beginning and 51.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 41.79 ms. Allocated memory is still 121.6 MB. Free memory was 51.8 MB in the beginning and 50.3 MB in the end (delta: 1.4 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: 25]: 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