./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loops/nec11.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/nec11.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 18:03:56,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:03:56,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:03:56,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:03:56,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:03:56,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:03:56,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:03:56,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:03:56,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:03:56,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:03:56,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:03:56,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:03:56,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:03:56,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:03:56,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:03:56,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:03:56,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:03:56,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:03:56,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:03:56,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:03:56,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:03:56,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:03:56,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:03:56,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:03:56,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:03:56,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:03:56,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:03:56,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:03:56,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:03:56,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:03:56,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:03:56,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:03:56,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:03:56,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:03:56,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:03:56,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:03:56,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:03:56,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:03:56,109 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:03:56,110 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:03:56,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:03:56,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-32bit-Kojak_Default.epf [2022-11-20 18:03:56,150 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:03:56,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:03:56,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:03:56,152 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 18:03:56,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 18:03:56,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 18:03:56,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:03:56,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 18:03:56,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 18:03:56,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:03:56,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 18:03:56,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:03:56,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:03:56,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:03:56,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:03:56,156 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 18:03:56,156 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 18:03:56,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:03:56,156 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:03:56,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:03:56,157 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 18:03:56,157 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 18:03:56,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:03:56,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 18:03:56,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:03:56,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:03:56,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:03:56,158 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 18:03:56,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:03:56,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:03:56,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b78564a93d1d434db2fa377a9b33de67cda5b233a427ae8d3550b20661e154a3 [2022-11-20 18:03:56,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:03:56,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:03:56,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:03:56,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:03:56,492 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:03:56,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/loops/nec11.c [2022-11-20 18:03:59,647 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:03:59,876 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:03:59,877 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/sv-benchmarks/c/loops/nec11.c [2022-11-20 18:03:59,888 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/data/4f1c0535f/184c5f523464488fb74f612894d8f09e/FLAGd4490c6b8 [2022-11-20 18:03:59,905 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/data/4f1c0535f/184c5f523464488fb74f612894d8f09e [2022-11-20 18:03:59,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:03:59,909 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:03:59,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:03:59,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:03:59,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:03:59,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:03:59" (1/1) ... [2022-11-20 18:03:59,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c8f9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:03:59, skipping insertion in model container [2022-11-20 18:03:59,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:03:59" (1/1) ... [2022-11-20 18:03:59,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:03:59,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:04:00,092 WARN L237 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_4414adff-e004-4a00-b563-6f2003785179/sv-benchmarks/c/loops/nec11.c[317,330] [2022-11-20 18:04:00,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:04:00,116 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:04:00,127 WARN L237 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_4414adff-e004-4a00-b563-6f2003785179/sv-benchmarks/c/loops/nec11.c[317,330] [2022-11-20 18:04:00,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:04:00,144 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:04:00,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00 WrapperNode [2022-11-20 18:04:00,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:04:00,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:04:00,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:04:00,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:04:00,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,181 INFO L138 Inliner]: procedures = 13, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-11-20 18:04:00,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:04:00,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:04:00,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:04:00,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:04:00,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:04:00,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:04:00,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:04:00,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:04:00,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 18:04:00,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 18:04:00,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 18:04:00,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 18:04:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 18:04:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:04:00,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:04:00,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 18:04:00,330 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:04:00,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:04:00,451 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:04:00,493 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:04:00,493 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 18:04:00,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:04:00 BoogieIcfgContainer [2022-11-20 18:04:00,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:04:00,497 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 18:04:00,497 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 18:04:00,508 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 18:04:00,508 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:04:00" (1/1) ... [2022-11-20 18:04:00,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:04:00,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:00,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-20 18:04:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-20 18:04:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 18:04:00,579 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:04:00,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:04:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:04:00,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:04:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2022-11-20 18:04:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2022-11-20 18:04:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 18:04:00,910 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:04:00,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:04:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:04:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:04:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2022-11-20 18:04:01,095 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2022-11-20 18:04:01,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 18:04:01,095 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:04:01,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:04:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:04:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:04:01,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 12 states and 15 transitions. [2022-11-20 18:04:01,420 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2022-11-20 18:04:01,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 18:04:01,423 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:04:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:04:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:04:01,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:04:01,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2022-11-20 18:04:01,965 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-20 18:04:01,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 18:04:01,965 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:04:01,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:04:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:04:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:04:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 14 states and 15 transitions. [2022-11-20 18:04:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-20 18:04:02,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 18:04:02,380 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:04:02,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:04:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:04:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:04:02,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 17 states and 18 transitions. [2022-11-20 18:04:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-11-20 18:04:02,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 18:04:02,768 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 18:04:02,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:04:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:04:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 18:04:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 18:04:03,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-11-20 18:04:03,302 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-11-20 18:04:03,302 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 18:04:03,302 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 8 iterations. [2022-11-20 18:04:03,312 INFO L754 CodeCheckObserver]: All specifications hold 2 specifications checked. All of them hold [2022-11-20 18:04:03,370 INFO L560 CodeCheckObserver]: Invariant with dag size 20 [2022-11-20 18:04:03,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 06:04:03 ImpRootNode [2022-11-20 18:04:03,386 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 18:04:03,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 18:04:03,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 18:04:03,388 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 18:04:03,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:04:00" (3/4) ... [2022-11-20 18:04:03,391 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 18:04:03,411 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-20 18:04:03,412 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-20 18:04:03,413 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 18:04:03,413 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 18:04:03,413 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 18:04:03,457 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 18:04:03,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 18:04:03,459 INFO L158 Benchmark]: Toolchain (without parser) took 3549.20ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 136.0MB in the beginning and 127.4MB in the end (delta: 8.6MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2022-11-20 18:04:03,459 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:04:03,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.38ms. Allocated memory is still 165.7MB. Free memory was 135.8MB in the beginning and 125.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 18:04:03,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.73ms. Allocated memory is still 165.7MB. Free memory was 125.3MB in the beginning and 123.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:04:03,460 INFO L158 Benchmark]: Boogie Preprocessor took 17.36ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 122.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:04:03,461 INFO L158 Benchmark]: RCFGBuilder took 295.82ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 111.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 18:04:03,461 INFO L158 Benchmark]: CodeCheck took 2889.43ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 111.1MB in the beginning and 130.6MB in the end (delta: -19.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-11-20 18:04:03,462 INFO L158 Benchmark]: Witness Printer took 70.92ms. Allocated memory is still 199.2MB. Free memory was 130.6MB in the beginning and 127.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 18:04:03,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 7 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 0 mSDtfsCounter, 324 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 424 GetRequests, 368 SyntacticMatches, 14 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 1/53 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 28]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (((len == 0 || (len <= 2 && !(len <= 1))) || (!(len <= 2) && len <= 3)) || (len <= 4 && 3 < len)) || (1 <= len && len <= 1) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 121.6MB. Free memory is still 75.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.38ms. Allocated memory is still 165.7MB. Free memory was 135.8MB in the beginning and 125.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.73ms. Allocated memory is still 165.7MB. Free memory was 125.3MB in the beginning and 123.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.36ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 122.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.82ms. Allocated memory is still 165.7MB. Free memory was 122.4MB in the beginning and 111.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 2889.43ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 111.1MB in the beginning and 130.6MB in the end (delta: -19.5MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Witness Printer took 70.92ms. Allocated memory is still 199.2MB. Free memory was 130.6MB in the beginning and 127.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2022-11-20 18:04:03,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4414adff-e004-4a00-b563-6f2003785179/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE