./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/multivar_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/multivar_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cba7dca6ff66778f2b0713799020489351e0894eee3f1f22efefe84bd1d673ea ............................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 05:32:32,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 05:32:32,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 05:32:33,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 05:32:33,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 05:32:33,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 05:32:33,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 05:32:33,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 05:32:33,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 05:32:33,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 05:32:33,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 05:32:33,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 05:32:33,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 05:32:33,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 05:32:33,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 05:32:33,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 05:32:33,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 05:32:33,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 05:32:33,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 05:32:33,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 05:32:33,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 05:32:33,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 05:32:33,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 05:32:33,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 05:32:33,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 05:32:33,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 05:32:33,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 05:32:33,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 05:32:33,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 05:32:33,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 05:32:33,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 05:32:33,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 05:32:33,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 05:32:33,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 05:32:33,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 05:32:33,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 05:32:33,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 05:32:33,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 05:32:33,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 05:32:33,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 05:32:33,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 05:32:33,086 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 05:32:33,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 05:32:33,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 05:32:33,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 05:32:33,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 05:32:33,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 05:32:33,125 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 05:32:33,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 05:32:33,126 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 05:32:33,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 05:32:33,127 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 05:32:33,127 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 05:32:33,128 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 05:32:33,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 05:32:33,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 05:32:33,129 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 05:32:33,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 05:32:33,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 05:32:33,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 05:32:33,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 05:32:33,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 05:32:33,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 05:32:33,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 05:32:33,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 05:32:33,133 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 05:32:33,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 05:32:33,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 05:32:33,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 05:32:33,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 05:32:33,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 05:32:33,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 05:32:33,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:32:33,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 05:32:33,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 05:32:33,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 05:32:33,143 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 05:32:33,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 05:32:33,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 05:32:33,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 05:32:33,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 05:32:33,145 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_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cba7dca6ff66778f2b0713799020489351e0894eee3f1f22efefe84bd1d673ea [2021-10-20 05:32:33,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 05:32:33,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 05:32:33,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 05:32:33,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 05:32:33,498 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 05:32:33,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loop-acceleration/multivar_1-2.c [2021-10-20 05:32:33,591 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/data/818c91c27/ce700e7441a544ca8f0b7af7d8e840d3/FLAGa8b611e30 [2021-10-20 05:32:34,196 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 05:32:34,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/sv-benchmarks/c/loop-acceleration/multivar_1-2.c [2021-10-20 05:32:34,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/data/818c91c27/ce700e7441a544ca8f0b7af7d8e840d3/FLAGa8b611e30 [2021-10-20 05:32:34,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/data/818c91c27/ce700e7441a544ca8f0b7af7d8e840d3 [2021-10-20 05:32:34,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 05:32:34,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 05:32:34,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 05:32:34,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 05:32:34,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 05:32:34,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2630214c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34, skipping insertion in model container [2021-10-20 05:32:34,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 05:32:34,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 05:32:34,739 WARN L228 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_0fe98eb6-f372-4adb-a36a-667dbd696953/sv-benchmarks/c/loop-acceleration/multivar_1-2.c[374,387] [2021-10-20 05:32:34,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:32:34,762 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 05:32:34,777 WARN L228 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_0fe98eb6-f372-4adb-a36a-667dbd696953/sv-benchmarks/c/loop-acceleration/multivar_1-2.c[374,387] [2021-10-20 05:32:34,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 05:32:34,798 INFO L208 MainTranslator]: Completed translation [2021-10-20 05:32:34,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34 WrapperNode [2021-10-20 05:32:34,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 05:32:34,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 05:32:34,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 05:32:34,800 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 05:32:34,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 05:32:34,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 05:32:34,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 05:32:34,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 05:32:34,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 05:32:34,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 05:32:34,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 05:32:34,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 05:32:34,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (1/1) ... [2021-10-20 05:32:34,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 05:32:34,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 05:32:34,927 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 05:32:34,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 05:32:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 05:32:34,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 05:32:35,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 05:32:35,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 05:32:35,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 05:32:35,296 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 05:32:35,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:32:35 BoogieIcfgContainer [2021-10-20 05:32:35,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 05:32:35,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 05:32:35,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 05:32:35,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 05:32:35,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:32:34" (1/3) ... [2021-10-20 05:32:35,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c069442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:32:35, skipping insertion in model container [2021-10-20 05:32:35,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:32:34" (2/3) ... [2021-10-20 05:32:35,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c069442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:32:35, skipping insertion in model container [2021-10-20 05:32:35,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:32:35" (3/3) ... [2021-10-20 05:32:35,309 INFO L111 eAbstractionObserver]: Analyzing ICFG multivar_1-2.c [2021-10-20 05:32:35,316 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 05:32:35,316 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 05:32:35,402 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 05:32:35,422 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 05:32:35,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 05:32:35,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 05:32:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 05:32:35,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 05:32:35,451 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 05:32:35,452 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 05:32:35,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 05:32:35,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1818790, now seen corresponding path program 1 times [2021-10-20 05:32:35,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 05:32:35,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674748889] [2021-10-20 05:32:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 05:32:35,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 05:32:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:32:35,663 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 05:32:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 05:32:35,718 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 05:32:35,721 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 05:32:35,723 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 05:32:35,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 05:32:35,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 05:32:35,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:32:35 BoogieIcfgContainer [2021-10-20 05:32:35,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 05:32:35,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 05:32:35,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 05:32:35,752 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 05:32:35,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:32:35" (3/4) ... [2021-10-20 05:32:35,756 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 05:32:35,796 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 05:32:35,796 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 05:32:35,799 INFO L168 Benchmark]: Toolchain (without parser) took 1245.07 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 80.1 MB in the end (delta: -3.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:32:35,799 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:32:35,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.15 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 67.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:35,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.42 ms. Allocated memory is still 109.1 MB. Free memory was 67.5 MB in the beginning and 66.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:35,802 INFO L168 Benchmark]: Boogie Preprocessor took 26.13 ms. Allocated memory is still 109.1 MB. Free memory was 66.1 MB in the beginning and 65.1 MB in the end (delta: 938.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:32:35,803 INFO L168 Benchmark]: RCFGBuilder took 429.16 ms. Allocated memory is still 109.1 MB. Free memory was 65.1 MB in the beginning and 55.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:35,804 INFO L168 Benchmark]: TraceAbstraction took 450.52 ms. Allocated memory is still 109.1 MB. Free memory was 54.5 MB in the beginning and 81.9 MB in the end (delta: -27.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 05:32:35,805 INFO L168 Benchmark]: Witness Printer took 44.57 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 80.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 05:32:35,810 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 79.7 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.15 ms. Allocated memory is still 109.1 MB. Free memory was 76.8 MB in the beginning and 67.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.42 ms. Allocated memory is still 109.1 MB. Free memory was 67.5 MB in the beginning and 66.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.13 ms. Allocated memory is still 109.1 MB. Free memory was 66.1 MB in the beginning and 65.1 MB in the end (delta: 938.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 429.16 ms. Allocated memory is still 109.1 MB. Free memory was 65.1 MB in the beginning and 55.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 450.52 ms. Allocated memory is still 109.1 MB. Free memory was 54.5 MB in the beginning and 81.9 MB in the end (delta: -27.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 44.57 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 80.1 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = __VERIFIER_nondet_uint(); [L15] unsigned int y = x + 1; [L17] COND FALSE !(x < 1024) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 331.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.6ms SsaConstructionTime, 117.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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! [2021-10-20 05:32:35,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fe98eb6-f372-4adb-a36a-667dbd696953/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...