./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi --witnessprinter.witness.filename witness --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 b06b08d501323de811576605780ed72bdf24037e477195316df25396abb6c35b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:06:29,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:06:29,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2023-11-24 23:06:29,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:06:29,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:06:29,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:06:29,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:06:29,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:06:29,172 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:06:29,172 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:06:29,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:06:29,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:06:29,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:06:29,175 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:06:29,175 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:06:29,176 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:06:29,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:06:29,177 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:06:29,178 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:06:29,178 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:06:29,179 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:06:29,180 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:06:29,180 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:06:29,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:06:29,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:06:29,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:06:29,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:06:29,183 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:06:29,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:06:29,183 INFO L153 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_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06b08d501323de811576605780ed72bdf24037e477195316df25396abb6c35b [2023-11-24 23:06:29,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:06:29,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:06:29,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:06:29,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:06:29,429 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:06:29,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2023-11-24 23:06:32,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:06:32,868 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:06:32,869 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/sv-benchmarks/c/array-memsafety/openbsd_cstrnlen-alloca-1.i [2023-11-24 23:06:32,889 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/data/268a8aa47/99c9ac4965a149aa8169ea2afe87fae2/FLAG7f05f0941 [2023-11-24 23:06:32,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/data/268a8aa47/99c9ac4965a149aa8169ea2afe87fae2 [2023-11-24 23:06:32,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:06:32,922 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:06:32,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:06:32,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:06:32,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:06:32,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:06:32" (1/1) ... [2023-11-24 23:06:32,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155641ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:32, skipping insertion in model container [2023-11-24 23:06:32,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:06:32" (1/1) ... [2023-11-24 23:06:32,998 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:06:33,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:06:33,385 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:06:33,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:06:33,458 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:06:33,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33 WrapperNode [2023-11-24 23:06:33,458 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:06:33,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:06:33,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:06:33,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:06:33,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,504 INFO L138 Inliner]: procedures = 117, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-11-24 23:06:33,504 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:06:33,505 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:06:33,505 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:06:33,505 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:06:33,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,531 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:06:33,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:06:33,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:06:33,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:06:33,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:06:33" (1/1) ... [2023-11-24 23:06:33,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:06:33,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:06:33,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:06:33,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_039da9f7-8237-424d-a1a6-952580541b6b/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:06:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:06:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:06:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:06:33,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:06:33,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:06:33,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:06:33,757 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:06:33,759 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:06:33,978 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:06:34,048 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:06:34,049 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 23:06:34,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:06:34 BoogieIcfgContainer [2023-11-24 23:06:34,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:06:34,052 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:06:34,052 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:06:34,064 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:06:34,064 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:06:34" (1/1) ... [2023-11-24 23:06:34,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:06:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 18 states and 21 transitions. [2023-11-24 23:06:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-24 23:06:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:06:34,137 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2023-11-24 23:06:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-24 23:06:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:06:34,456 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:34,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 19 states and 24 transitions. [2023-11-24 23:06:35,220 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-11-24 23:06:35,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:06:35,222 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 18 states and 23 transitions. [2023-11-24 23:06:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2023-11-24 23:06:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 23:06:35,287 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 29 transitions. [2023-11-24 23:06:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2023-11-24 23:06:36,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:06:36,073 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:36,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 23 states and 37 transitions. [2023-11-24 23:06:37,914 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 37 transitions. [2023-11-24 23:06:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:06:37,914 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:37,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 25 states and 40 transitions. [2023-11-24 23:06:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 40 transitions. [2023-11-24 23:06:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:06:39,518 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:39,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 28 states and 44 transitions. [2023-11-24 23:06:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 44 transitions. [2023-11-24 23:06:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:06:39,733 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:39,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 31 states and 50 transitions. [2023-11-24 23:06:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2023-11-24 23:06:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:06:40,325 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:40,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:40,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 32 states and 51 transitions. [2023-11-24 23:06:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 51 transitions. [2023-11-24 23:06:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:06:41,466 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:41,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 22 states and 29 transitions. [2023-11-24 23:06:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2023-11-24 23:06:43,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:06:43,088 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:45,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2023-11-24 23:06:45,191 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2023-11-24 23:06:45,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:06:45,192 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:48,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 32 states and 52 transitions. [2023-11-24 23:06:48,014 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 52 transitions. [2023-11-24 23:06:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:06:48,015 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:48,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-24 23:06:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 33 states and 53 transitions. [2023-11-24 23:06:48,446 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 53 transitions. [2023-11-24 23:06:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:06:48,451 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:48,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 38 states and 63 transitions. [2023-11-24 23:06:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 63 transitions. [2023-11-24 23:06:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:06:51,703 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:51,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:06:52,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 39 states and 65 transitions. [2023-11-24 23:06:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 65 transitions. [2023-11-24 23:06:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-24 23:06:52,870 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:52,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 23:06:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:54,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 40 states and 67 transitions. [2023-11-24 23:06:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 67 transitions. [2023-11-24 23:06:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:06:54,239 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:54,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:06:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:06:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 47 states and 78 transitions. [2023-11-24 23:06:59,752 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2023-11-24 23:06:59,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:06:59,753 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:06:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:06:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:06:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:07:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 45 states and 71 transitions. [2023-11-24 23:07:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2023-11-24 23:07:00,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-24 23:07:00,534 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:07:01,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:01,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 43 states and 67 transitions. [2023-11-24 23:07:01,405 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2023-11-24 23:07:01,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-24 23:07:01,406 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:01,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-24 23:07:02,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:02,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 45 states and 69 transitions. [2023-11-24 23:07:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 69 transitions. [2023-11-24 23:07:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 23:07:02,060 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:02,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-24 23:07:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:02,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 46 states and 69 transitions. [2023-11-24 23:07:02,316 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 69 transitions. [2023-11-24 23:07:02,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 23:07:02,316 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:02,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:07:09,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 55 states and 84 transitions. [2023-11-24 23:07:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 84 transitions. [2023-11-24 23:07:09,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 23:07:09,538 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:07:15,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:07:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 63 states and 96 transitions. [2023-11-24 23:07:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 96 transitions. [2023-11-24 23:07:15,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-24 23:07:15,741 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:07:15,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:07:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:07:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.