./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/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_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce305d75684696e5fabb4c8d08830bbd90a67b7669f979309850a29850c4f917 --- 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 17:48:33,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 17:48:33,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 17:48:33,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 17:48:33,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 17:48:33,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 17:48:33,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 17:48:33,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 17:48:33,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 17:48:33,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 17:48:33,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 17:48:33,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 17:48:33,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 17:48:33,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 17:48:33,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 17:48:33,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 17:48:33,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 17:48:33,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 17:48:33,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 17:48:33,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 17:48:33,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 17:48:33,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 17:48:33,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 17:48:33,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 17:48:33,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 17:48:33,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 17:48:33,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 17:48:33,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 17:48:33,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 17:48:33,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 17:48:33,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 17:48:33,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 17:48:33,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 17:48:33,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 17:48:33,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 17:48:33,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 17:48:33,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 17:48:33,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 17:48:33,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 17:48:33,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 17:48:33,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 17:48:33,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2022-11-20 17:48:33,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 17:48:33,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 17:48:33,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 17:48:33,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 17:48:33,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 17:48:33,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 17:48:33,280 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 17:48:33,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 17:48:33,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 17:48:33,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 17:48:33,281 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 17:48:33,281 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 17:48:33,282 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 17:48:33,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 17:48:33,282 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 17:48:33,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 17:48:33,283 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 17:48:33,283 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 17:48:33,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 17:48:33,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:48:33,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 17:48:33,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 17:48:33,285 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 17:48:33,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 17:48:33,285 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_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce305d75684696e5fabb4c8d08830bbd90a67b7669f979309850a29850c4f917 [2022-11-20 17:48:33,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 17:48:33,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 17:48:33,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 17:48:33,606 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 17:48:33,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 17:48:33,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2022-11-20 17:48:36,700 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 17:48:37,021 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 17:48:37,021 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/sv-benchmarks/c/array-memsafety/cstrpbrk_unsafe.i [2022-11-20 17:48:37,032 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/data/d1ff7e375/342f82a0337741278c33c4ae2abb9e0e/FLAGe68c6556c [2022-11-20 17:48:37,047 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/data/d1ff7e375/342f82a0337741278c33c4ae2abb9e0e [2022-11-20 17:48:37,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 17:48:37,051 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 17:48:37,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 17:48:37,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 17:48:37,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 17:48:37,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d3b9a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37, skipping insertion in model container [2022-11-20 17:48:37,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 17:48:37,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 17:48:37,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:48:37,532 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 17:48:37,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 17:48:37,622 INFO L208 MainTranslator]: Completed translation [2022-11-20 17:48:37,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37 WrapperNode [2022-11-20 17:48:37,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 17:48:37,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 17:48:37,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 17:48:37,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 17:48:37,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,681 INFO L138 Inliner]: procedures = 118, calls = 16, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 116 [2022-11-20 17:48:37,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 17:48:37,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 17:48:37,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 17:48:37,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 17:48:37,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,708 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 17:48:37,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 17:48:37,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 17:48:37,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 17:48:37,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:48:37" (1/1) ... [2022-11-20 17:48:37,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 17:48:37,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 17:48:37,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 17:48:37,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 17:48:37,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 17:48:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 17:48:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 17:48:37,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 17:48:37,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 17:48:37,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 17:48:37,944 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 17:48:37,947 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 17:48:38,409 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 17:48:38,524 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 17:48:38,524 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 17:48:38,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:48:38 BoogieIcfgContainer [2022-11-20 17:48:38,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 17:48:38,528 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 17:48:38,528 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 17:48:38,543 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 17:48:38,543 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:48:38" (1/1) ... [2022-11-20 17:48:38,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 17:48:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 54 states and 61 transitions. [2022-11-20 17:48:38,610 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2022-11-20 17:48:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 17:48:38,617 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:38,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:38,885 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 17:48:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 53 states and 60 transitions. [2022-11-20 17:48:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2022-11-20 17:48:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 17:48:38,965 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:39,264 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 17:48:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 55 states and 64 transitions. [2022-11-20 17:48:39,579 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2022-11-20 17:48:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 17:48:39,580 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:39,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:39,872 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 17:48:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:39,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 54 states and 63 transitions. [2022-11-20 17:48:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-11-20 17:48:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 17:48:39,934 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:40,191 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 17:48:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 55 states and 65 transitions. [2022-11-20 17:48:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2022-11-20 17:48:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:48:40,694 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:40,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:40,980 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 17:48:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:41,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 58 states and 72 transitions. [2022-11-20 17:48:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-11-20 17:48:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:48:41,906 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:41,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:48:43,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:43,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 60 states and 77 transitions. [2022-11-20 17:48:43,635 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2022-11-20 17:48:43,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:48:43,635 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:43,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:43,675 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 17:48:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:43,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 59 states and 76 transitions. [2022-11-20 17:48:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2022-11-20 17:48:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:48:43,705 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:43,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:43,913 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 17:48:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:44,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 61 states and 80 transitions. [2022-11-20 17:48:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2022-11-20 17:48:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:48:44,350 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:44,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:44,639 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 17:48:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 61 states and 80 transitions. [2022-11-20 17:48:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2022-11-20 17:48:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 17:48:45,081 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:45,165 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 17:48:45,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 63 states and 85 transitions. [2022-11-20 17:48:45,578 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2022-11-20 17:48:45,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 17:48:45,578 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:45,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:45,753 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 17:48:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 65 states and 89 transitions. [2022-11-20 17:48:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 89 transitions. [2022-11-20 17:48:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 17:48:46,603 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:46,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:46,865 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 17:48:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 68 states and 97 transitions. [2022-11-20 17:48:48,070 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions. [2022-11-20 17:48:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:48:48,071 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:48,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:48,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:48:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 64 states and 87 transitions. [2022-11-20 17:48:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2022-11-20 17:48:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:48:49,386 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:49,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:48:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:52,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 59 states and 77 transitions. [2022-11-20 17:48:52,059 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2022-11-20 17:48:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:48:52,059 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:52,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:48:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 62 states and 86 transitions. [2022-11-20 17:48:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 86 transitions. [2022-11-20 17:48:53,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:48:53,371 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:53,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:53,779 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 17:48:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 65 states and 94 transitions. [2022-11-20 17:48:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 94 transitions. [2022-11-20 17:48:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 17:48:54,891 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:54,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:55,239 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 17:48:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 65 states and 93 transitions. [2022-11-20 17:48:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2022-11-20 17:48:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 17:48:56,070 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:56,089 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 17:48:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 64 states and 92 transitions. [2022-11-20 17:48:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 92 transitions. [2022-11-20 17:48:56,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 17:48:56,104 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:56,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:56,510 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 17:48:56,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 66 states and 95 transitions. [2022-11-20 17:48:56,795 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 95 transitions. [2022-11-20 17:48:56,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 17:48:56,796 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:56,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:48:57,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:57,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 67 states and 98 transitions. [2022-11-20 17:48:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2022-11-20 17:48:57,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 17:48:57,921 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:57,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:58,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 17:48:58,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:48:58,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 68 states and 101 transitions. [2022-11-20 17:48:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2022-11-20 17:48:58,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 17:48:58,988 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:48:58,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:48:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:48:59,279 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 17:49:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:49:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 72 states and 108 transitions. [2022-11-20 17:49:00,428 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 108 transitions. [2022-11-20 17:49:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 17:49:00,428 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:49:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:49:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:49:01,059 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 17:49:02,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:49:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 76 states and 117 transitions. [2022-11-20 17:49:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 117 transitions. [2022-11-20 17:49:02,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 17:49:02,993 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:49:02,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:49:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:49:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:49:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:49:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 77 states and 119 transitions. [2022-11-20 17:49:05,394 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 119 transitions. [2022-11-20 17:49:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 17:49:05,395 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:49:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:49:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 17:49:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 17:49:07,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 17:49:07,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 68 states and 94 transitions. [2022-11-20 17:49:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2022-11-20 17:49:07,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 17:49:07,709 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 17:49:07,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 17:49:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:49:07,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:49:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:49:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:49:07,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 17:49:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 17:49:07,850 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 26 iterations. [2022-11-20 17:49:07,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 05:49:07 ImpRootNode [2022-11-20 17:49:07,904 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 17:49:07,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 17:49:07,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 17:49:07,905 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 17:49:07,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:48:38" (3/4) ... [2022-11-20 17:49:07,907 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 17:49:07,946 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 17:49:07,947 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 17:49:07,947 INFO L158 Benchmark]: Toolchain (without parser) took 30895.93ms. Allocated memory was 197.1MB in the beginning and 343.9MB in the end (delta: 146.8MB). Free memory was 164.7MB in the beginning and 222.1MB in the end (delta: -57.5MB). Peak memory consumption was 91.6MB. Max. memory is 16.1GB. [2022-11-20 17:49:07,948 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 17:49:07,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.65ms. Allocated memory is still 197.1MB. Free memory was 164.1MB in the beginning and 147.9MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 17:49:07,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.46ms. Allocated memory is still 197.1MB. Free memory was 147.9MB in the beginning and 145.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:49:07,950 INFO L158 Benchmark]: Boogie Preprocessor took 29.73ms. Allocated memory is still 197.1MB. Free memory was 145.8MB in the beginning and 144.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:49:07,950 INFO L158 Benchmark]: RCFGBuilder took 814.38ms. Allocated memory is still 197.1MB. Free memory was 144.3MB in the beginning and 121.8MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 17:49:07,951 INFO L158 Benchmark]: CodeCheck took 29375.93ms. Allocated memory was 197.1MB in the beginning and 343.9MB in the end (delta: 146.8MB). Free memory was 121.8MB in the beginning and 224.2MB in the end (delta: -102.4MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2022-11-20 17:49:07,951 INFO L158 Benchmark]: Witness Printer took 42.39ms. Allocated memory is still 343.9MB. Free memory was 224.2MB in the beginning and 222.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 17:49:07,954 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, 54 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 29.3s, OverallIterations: 26, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1041 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 939 mSDsluCounter, 259 SdHoareTripleChecker+Invalid, 11.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 111 mSDsCounter, 1467 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5015 IncrementalHoareTripleChecker+Invalid, 6482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1467 mSolverCounterUnsat, 148 mSDtfsCounter, 5015 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1618 GetRequests, 1333 SyntacticMatches, 37 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29553 ImplicationChecksByTransitivity, 24.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 2089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 16 PerfectInterpolantSequences, 4/30 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L546] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, nondetString={-2:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, nondetString={-2:0}] [L527] nondetString[length-1] = '\0' [L528] return nondetString; [L546] RET, EXPR build_nondet_String() [L546] char* s1 = build_nondet_String(); [L547] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND FALSE !(length < 1) [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, nondetString={-1:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, nondetString={-1:0}] [L527] nondetString[length-1] = '\0' [L528] return nondetString; [L547] RET, EXPR build_nondet_String() [L547] char* s2 = build_nondet_String(); [L548] CALL cstrpbrk(s1,s2) [L532] const char *sc1; [L533] const char *s; [L534] int c; [L535] sc1 = s1 VAL [s1={-2:0}, s1={-2:0}, s2={-1:0}, s2={-1:0}, sc1={-2:0}] [L535] EXPR \read(*sc1) VAL [\read(*sc1)=0, s1={-2:0}, s1={-2:0}, s2={-1:0}, s2={-1:0}, sc1={-2:0}] [L535] COND FALSE !(*sc1 != '\0') [L543] return 0; VAL [\result={0:0}, s1={-2:0}, s1={-2:0}, s2={-1:0}, s2={-1:0}, sc1={-2:0}] [L548] RET cstrpbrk(s1,s2) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 570.65ms. Allocated memory is still 197.1MB. Free memory was 164.1MB in the beginning and 147.9MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.46ms. Allocated memory is still 197.1MB. Free memory was 147.9MB in the beginning and 145.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.73ms. Allocated memory is still 197.1MB. Free memory was 145.8MB in the beginning and 144.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 814.38ms. Allocated memory is still 197.1MB. Free memory was 144.3MB in the beginning and 121.8MB in the end (delta: 22.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * CodeCheck took 29375.93ms. Allocated memory was 197.1MB in the beginning and 343.9MB in the end (delta: 146.8MB). Free memory was 121.8MB in the beginning and 224.2MB in the end (delta: -102.4MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Witness Printer took 42.39ms. Allocated memory is still 343.9MB. Free memory was 224.2MB in the beginning and 222.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-11-20 17:49:07,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6be20584-fc5c-4c64-b4a0-fa610e4c35e9/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)