./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/string-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/config/KojakReach.xml -i ../../sv-benchmarks/c/loops/string-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-05 23:44:11,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-05 23:44:11,908 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-12-05 23:44:11,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-05 23:44:11,913 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-12-05 23:44:11,933 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-05 23:44:11,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-05 23:44:11,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-12-05 23:44:11,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-05 23:44:11,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-05 23:44:11,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-05 23:44:11,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-05 23:44:11,935 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-05 23:44:11,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-05 23:44:11,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-05 23:44:11,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-05 23:44:11,936 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-12-05 23:44:11,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-05 23:44:11,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:44:11,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-05 23:44:11,937 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-05 23:44:11,937 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-05 23:44:11,937 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-12-05 23:44:11,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-05 23:44:11,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b 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 ! call(reach_error())) ) 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 -> fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892 [2024-12-05 23:44:12,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 23:44:12,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 23:44:12,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 23:44:12,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 23:44:12,194 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 23:44:12,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/loops/string-2.i [2024-12-05 23:44:14,812 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data/87cd29692/d4049ad3a9cd439ebc9c33830a2b6022/FLAGf263636df [2024-12-05 23:44:14,996 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 23:44:14,996 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/sv-benchmarks/c/loops/string-2.i [2024-12-05 23:44:15,003 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data/87cd29692/d4049ad3a9cd439ebc9c33830a2b6022/FLAGf263636df [2024-12-05 23:44:15,017 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data/87cd29692/d4049ad3a9cd439ebc9c33830a2b6022 [2024-12-05 23:44:15,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 23:44:15,021 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 23:44:15,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 23:44:15,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 23:44:15,026 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 23:44:15,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51de7c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15, skipping insertion in model container [2024-12-05 23:44:15,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 23:44:15,178 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/sv-benchmarks/c/loops/string-2.i[896,909] [2024-12-05 23:44:15,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:44:15,206 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 23:44:15,215 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/sv-benchmarks/c/loops/string-2.i[896,909] [2024-12-05 23:44:15,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:44:15,233 INFO L204 MainTranslator]: Completed translation [2024-12-05 23:44:15,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15 WrapperNode [2024-12-05 23:44:15,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 23:44:15,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 23:44:15,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 23:44:15,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 23:44:15,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,257 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2024-12-05 23:44:15,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 23:44:15,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 23:44:15,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 23:44:15,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 23:44:15,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,265 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,265 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,270 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,274 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,275 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,276 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,278 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 23:44:15,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 23:44:15,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 23:44:15,279 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 23:44:15,279 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:44:15,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 23:44:15,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 23:44:15,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 23:44:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 23:44:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-05 23:44:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-05 23:44:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-05 23:44:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 23:44:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 23:44:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-05 23:44:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 23:44:15,371 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 23:44:15,372 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 23:44:15,530 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-05 23:44:15,530 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 23:44:15,580 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 23:44:15,581 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-05 23:44:15,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:44:15 BoogieIcfgContainer [2024-12-05 23:44:15,581 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 23:44:15,582 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 23:44:15,582 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 23:44:15,592 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 23:44:15,592 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:44:15" (1/1) ... [2024-12-05 23:44:15,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 23:44:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 18 states and 28 transitions. [2024-12-05 23:44:15,646 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2024-12-05 23:44:15,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-05 23:44:15,648 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:15,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:44:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:15,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2024-12-05 23:44:15,873 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2024-12-05 23:44:15,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-05 23:44:15,874 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:44:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 29 transitions. [2024-12-05 23:44:16,019 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2024-12-05 23:44:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 23:44:16,019 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 21 states and 31 transitions. [2024-12-05 23:44:16,098 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2024-12-05 23:44:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-05 23:44:16,098 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 22 states and 33 transitions. [2024-12-05 23:44:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2024-12-05 23:44:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 23:44:16,185 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 23 states and 34 transitions. [2024-12-05 23:44:16,331 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 34 transitions. [2024-12-05 23:44:16,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-05 23:44:16,331 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 24 states and 35 transitions. [2024-12-05 23:44:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2024-12-05 23:44:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-05 23:44:16,463 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:16,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 25 states and 35 transitions. [2024-12-05 23:44:16,597 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2024-12-05 23:44:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-05 23:44:16,597 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-05 23:44:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2024-12-05 23:44:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2024-12-05 23:44:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-05 23:44:16,689 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-05 23:44:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 27 states and 37 transitions. [2024-12-05 23:44:16,780 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-12-05 23:44:16,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-05 23:44:16,781 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-05 23:44:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 28 states and 37 transitions. [2024-12-05 23:44:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-12-05 23:44:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-05 23:44:16,878 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:16,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:17,061 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-05 23:44:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 30 states and 42 transitions. [2024-12-05 23:44:17,106 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 42 transitions. [2024-12-05 23:44:17,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-05 23:44:17,108 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-05 23:44:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 37 states and 54 transitions. [2024-12-05 23:44:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2024-12-05 23:44:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-05 23:44:17,367 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:17,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-05 23:44:17,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 40 states and 58 transitions. [2024-12-05 23:44:17,665 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 58 transitions. [2024-12-05 23:44:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-05 23:44:17,665 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:17,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-05 23:44:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:17,709 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:44:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:17,864 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:44:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:17,927 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2024-12-05 23:44:17,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 11:44:17 ImpRootNode [2024-12-05 23:44:17,964 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 23:44:17,965 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 23:44:17,965 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 23:44:17,965 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 23:44:17,966 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:44:15" (3/4) ... [2024-12-05 23:44:17,969 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-05 23:44:17,969 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 23:44:17,970 INFO L158 Benchmark]: Toolchain (without parser) took 2949.38ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 117.8MB in the beginning and 281.8MB in the end (delta: -163.9MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2024-12-05 23:44:17,971 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:44:17,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.34ms. Allocated memory is still 142.6MB. Free memory was 117.8MB in the beginning and 106.2MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:44:17,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.81ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 104.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:44:17,972 INFO L158 Benchmark]: Boogie Preprocessor took 20.32ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 103.8MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:44:17,972 INFO L158 Benchmark]: RCFGBuilder took 302.54ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 86.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-05 23:44:17,973 INFO L158 Benchmark]: CodeCheck took 2382.55ms. Allocated memory was 142.6MB in the beginning and 318.8MB in the end (delta: 176.2MB). Free memory was 86.5MB in the beginning and 281.8MB in the end (delta: -195.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:44:17,973 INFO L158 Benchmark]: Witness Printer took 4.59ms. Allocated memory is still 318.8MB. Free memory was 281.8MB in the beginning and 281.8MB in the end (delta: 17.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:44:17,976 INFO L338 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 14, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 627 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 224 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 358 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 587 IncrementalHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 358 mSolverCounterUnsat, 198 mSDtfsCounter, 587 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1887 GetRequests, 1841 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 357 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 152/194 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, ConComCheckerStatistics: No data available - UnprovableResult [Line: 20]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 69. Possible FailurePath: [L31] char string_A[5], string_B[5]; [L32] int i, j, nc_A, nc_B, found=0; [L35] i=0 VAL [i=0, string_A={14352:0}, string_B={14353:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=1, string_A={14352:0}, string_B={14353:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=2, string_A={14352:0}, string_B={14353:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=3, string_A={14352:0}, string_B={14353:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=4, string_A={14352:0}, string_B={14353:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=5, string_A={14352:0}, string_B={14353:0}] [L35] COND FALSE !(i<5) [L37] EXPR string_A[5 -1] VAL [string_A={14352:0}, string_B={14353:0}] [L37] COND FALSE !(!(string_A[5 -1]=='\0')) [L39] i=0 VAL [i=0, string_A={14352:0}, string_B={14353:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=1, string_A={14352:0}, string_B={14353:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=2, string_A={14352:0}, string_B={14353:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=3, string_A={14352:0}, string_B={14353:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=4, string_A={14352:0}, string_B={14353:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=5, string_A={14352:0}, string_B={14353:0}] [L39] COND FALSE !(i<5) [L41] EXPR string_B[5 -1] VAL [string_A={14352:0}, string_B={14353:0}] [L41] COND FALSE !(!(string_B[5 -1]=='\0')) [L43] nc_A = 0 VAL [nc_A=0, string_A={14352:0}, string_B={14353:0}] [L44] EXPR string_A[nc_A] VAL [nc_A=0, string_A={14352:0}, string_B={14353:0}] [L44] COND TRUE string_A[nc_A]!='\0' [L45] nc_A++ VAL [nc_A=1, string_A={14352:0}, string_B={14353:0}] [L44] EXPR string_A[nc_A] VAL [nc_A=1, string_A={14352:0}, string_B={14353:0}] [L44] COND FALSE !(string_A[nc_A]!='\0') [L47] nc_B = 0 VAL [nc_A=1, nc_B=0, string_A={14352:0}, string_B={14353:0}] [L48] EXPR string_B[nc_B] VAL [nc_A=1, nc_B=0, string_A={14352:0}, string_B={14353:0}] [L48] COND TRUE string_B[nc_B]!='\0' [L49] nc_B++ VAL [nc_A=1, nc_B=1, string_A={14352:0}, string_B={14353:0}] [L48] EXPR string_B[nc_B] VAL [nc_A=1, nc_B=1, string_A={14352:0}, string_B={14353:0}] [L48] COND FALSE !(string_B[nc_B]!='\0') [L51] COND FALSE !(!(nc_B >= nc_A)) [L54] EXPR j=0 [L54] i=j=0 VAL [i=0, j=0, nc_A=1, nc_B=1, string_A={14352:0}, string_B={14353:0}] [L55] COND TRUE (inc_B-1)<nc_B-1)< main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b 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 ! call(reach_error())) ) 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 -> fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892 [2024-12-05 23:44:20,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-05 23:44:20,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-05 23:44:20,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-05 23:44:20,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-05 23:44:20,373 INFO L274 PluginConnector]: CDTParser initialized [2024-12-05 23:44:20,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/../../sv-benchmarks/c/loops/string-2.i [2024-12-05 23:44:23,021 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data/7bb5a7b27/0858c757f161430aa3a66dbcef3ce708/FLAG4606a9228 [2024-12-05 23:44:23,176 INFO L384 CDTParser]: Found 1 translation units. [2024-12-05 23:44:23,177 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/sv-benchmarks/c/loops/string-2.i [2024-12-05 23:44:23,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data/7bb5a7b27/0858c757f161430aa3a66dbcef3ce708/FLAG4606a9228 [2024-12-05 23:44:23,204 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/data/7bb5a7b27/0858c757f161430aa3a66dbcef3ce708 [2024-12-05 23:44:23,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-05 23:44:23,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-05 23:44:23,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-05 23:44:23,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-05 23:44:23,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-05 23:44:23,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd7c468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23, skipping insertion in model container [2024-12-05 23:44:23,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-05 23:44:23,365 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/sv-benchmarks/c/loops/string-2.i[896,909] [2024-12-05 23:44:23,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:44:23,395 INFO L200 MainTranslator]: Completed pre-run [2024-12-05 23:44:23,405 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/sv-benchmarks/c/loops/string-2.i[896,909] [2024-12-05 23:44:23,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-05 23:44:23,429 INFO L204 MainTranslator]: Completed translation [2024-12-05 23:44:23,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23 WrapperNode [2024-12-05 23:44:23,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-05 23:44:23,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-05 23:44:23,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-05 23:44:23,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-05 23:44:23,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,445 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,462 INFO L138 Inliner]: procedures = 17, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2024-12-05 23:44:23,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-05 23:44:23,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-05 23:44:23,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-05 23:44:23,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-05 23:44:23,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,480 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-05 23:44:23,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-05 23:44:23,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-05 23:44:23,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-05 23:44:23,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-12-05 23:44:23,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/z3 [2024-12-05 23:44:23,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-12-05 23:44:23,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-12-05 23:44:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-05 23:44:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-12-05 23:44:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-12-05 23:44:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-05 23:44:23,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-05 23:44:23,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-05 23:44:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2024-12-05 23:44:23,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-05 23:44:23,614 INFO L234 CfgBuilder]: Building ICFG [2024-12-05 23:44:23,616 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-05 23:44:23,815 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-12-05 23:44:23,815 INFO L283 CfgBuilder]: Performing block encoding [2024-12-05 23:44:23,879 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-05 23:44:23,879 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-05 23:44:23,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:44:23 BoogieIcfgContainer [2024-12-05 23:44:23,880 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-05 23:44:23,881 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-12-05 23:44:23,881 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-12-05 23:44:23,890 INFO L274 PluginConnector]: CodeCheck initialized [2024-12-05 23:44:23,891 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:44:23" (1/1) ... [2024-12-05 23:44:23,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-05 23:44:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:23,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 18 states and 28 transitions. [2024-12-05 23:44:23,943 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2024-12-05 23:44:23,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-12-05 23:44:23,945 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:23,946 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:23,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:23,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:23,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-12-05 23:44:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,034 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:24,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-05 23:44:24,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:24,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:44:24,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-12-05 23:44:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2024-12-05 23:44:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2024-12-05 23:44:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-12-05 23:44:24,132 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:24,132 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:24,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:24,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-12-05 23:44:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,206 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-05 23:44:24,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:24,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-05 23:44:24,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-12-05 23:44:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:24,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2024-12-05 23:44:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2024-12-05 23:44:24,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-05 23:44:24,283 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:24,284 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:24,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:24,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:24,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-12-05 23:44:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,363 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-05 23:44:24,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-05 23:44:24,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-12-05 23:44:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:24,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 20 states and 29 transitions. [2024-12-05 23:44:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 29 transitions. [2024-12-05 23:44:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-05 23:44:24,422 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:24,422 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:24,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:24,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:24,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-12-05 23:44:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,509 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-05 23:44:24,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-05 23:44:24,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-12-05 23:44:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:24,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 21 states and 30 transitions. [2024-12-05 23:44:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2024-12-05 23:44:24,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-05 23:44:24,623 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:24,623 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:24,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:24,625 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:24,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-12-05 23:44:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,721 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-05 23:44:24,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:24,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-12-05 23:44:24,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 22 states and 31 transitions. [2024-12-05 23:44:24,796 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2024-12-05 23:44:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-12-05 23:44:24,797 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:24,797 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:24,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:24,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-12-05 23:44:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,901 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:24,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-05 23:44:24,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:24,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2024-12-05 23:44:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 23 states and 32 transitions. [2024-12-05 23:44:25,023 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 32 transitions. [2024-12-05 23:44:25,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-12-05 23:44:25,023 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:25,024 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:25,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:25,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:25,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-12-05 23:44:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,122 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-05 23:44:25,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-05 23:44:25,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-12-05 23:44:25,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 24 states and 33 transitions. [2024-12-05 23:44:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2024-12-05 23:44:25,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-12-05 23:44:25,266 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:25,266 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:25,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:25,268 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:25,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-12-05 23:44:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,355 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-05 23:44:25,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-05 23:44:25,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-12-05 23:44:25,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:25,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 25 states and 34 transitions. [2024-12-05 23:44:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2024-12-05 23:44:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-05 23:44:25,431 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:25,431 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:25,433 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:25,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-12-05 23:44:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,554 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-05 23:44:25,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-05 23:44:25,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-12-05 23:44:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 26 states and 35 transitions. [2024-12-05 23:44:25,629 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2024-12-05 23:44:25,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-05 23:44:25,629 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:25,629 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:25,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:25,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:25,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-12-05 23:44:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,739 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:25,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-05 23:44:25,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-05 23:44:25,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-12-05 23:44:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 31 states and 45 transitions. [2024-12-05 23:44:25,975 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2024-12-05 23:44:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-05 23:44:25,977 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:25,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:25,978 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:25,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-12-05 23:44:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:26,074 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:26,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-05 23:44:26,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-05 23:44:26,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-12-05 23:44:26,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:26,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 35 states and 53 transitions. [2024-12-05 23:44:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 53 transitions. [2024-12-05 23:44:26,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-05 23:44:26,427 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:26,427 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:26,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:26,429 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:26,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-12-05 23:44:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:26,575 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:26,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-05 23:44:26,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-05 23:44:26,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-12-05 23:44:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 44 states and 68 transitions. [2024-12-05 23:44:27,095 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 68 transitions. [2024-12-05 23:44:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-05 23:44:27,095 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:27,095 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:27,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:27,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:27,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-12-05 23:44:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:27,210 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:27,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-05 23:44:27,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-05 23:44:27,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-12-05 23:44:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 48 states and 76 transitions. [2024-12-05 23:44:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 76 transitions. [2024-12-05 23:44:27,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-05 23:44:27,685 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:27,685 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:27,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:27,690 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:27,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-12-05 23:44:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:27,815 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:27,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-05 23:44:27,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-12-05 23:44:27,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-12-05 23:44:28,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 52 states and 82 transitions. [2024-12-05 23:44:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 82 transitions. [2024-12-05 23:44:28,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-05 23:44:28,145 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:28,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:28,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:28,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-12-05 23:44:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:28,252 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:28,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-05 23:44:28,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-05 23:44:28,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-12-05 23:44:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 53 states and 83 transitions. [2024-12-05 23:44:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 83 transitions. [2024-12-05 23:44:28,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-05 23:44:28,455 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:28,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:28,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:28,456 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:28,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-12-05 23:44:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:28,603 ERROR L568 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-12-05 23:44:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-05 23:44:28,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-05 23:44:28,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-05 23:44:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-05 23:44:28,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-12-05 23:44:28,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-12-05 23:44:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 54 states and 84 transitions. [2024-12-05 23:44:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 84 transitions. [2024-12-05 23:44:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-05 23:44:28,682 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-12-05 23:44:28,682 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-05 23:44:28,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 [2024-12-05 23:44:28,684 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-05 23:44:28,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-12-05 23:44:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:29,011 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:44:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:29,817 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-05 23:44:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-05 23:44:29,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-12-05 23:44:29,971 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 17 iterations. [2024-12-05 23:44:29,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 05.12 11:44:29 ImpRootNode [2024-12-05 23:44:29,993 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-12-05 23:44:29,993 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-05 23:44:29,993 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-05 23:44:29,993 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-05 23:44:29,994 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:44:23" (3/4) ... [2024-12-05 23:44:29,995 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-05 23:44:30,041 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 25. [2024-12-05 23:44:30,098 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/witness.graphml [2024-12-05 23:44:30,098 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5fa47f8-8ad2-48a4-8e5e-994fa8c0dc25/bin/ukojak-verify-CZk0znPC7b/witness.yml [2024-12-05 23:44:30,098 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-05 23:44:30,099 INFO L158 Benchmark]: Toolchain (without parser) took 6891.03ms. Allocated memory is still 92.3MB. Free memory was 70.3MB in the beginning and 38.9MB in the end (delta: 31.4MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2024-12-05 23:44:30,099 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory is still 47.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:44:30,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 220.74ms. Allocated memory is still 92.3MB. Free memory was 70.1MB in the beginning and 58.1MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:44:30,100 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.68ms. Allocated memory is still 92.3MB. Free memory was 58.0MB in the beginning and 56.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-05 23:44:30,100 INFO L158 Benchmark]: Boogie Preprocessor took 27.66ms. Allocated memory is still 92.3MB. Free memory was 56.7MB in the beginning and 55.5MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:44:30,101 INFO L158 Benchmark]: RCFGBuilder took 388.91ms. Allocated memory is still 92.3MB. Free memory was 55.4MB in the beginning and 67.5MB in the end (delta: -12.1MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2024-12-05 23:44:30,101 INFO L158 Benchmark]: CodeCheck took 6112.04ms. Allocated memory is still 92.3MB. Free memory was 67.5MB in the beginning and 44.8MB in the end (delta: 22.8MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2024-12-05 23:44:30,101 INFO L158 Benchmark]: Witness Printer took 105.32ms. Allocated memory is still 92.3MB. Free memory was 44.8MB in the beginning and 38.9MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-05 23:44:30,103 INFO L338 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.1s, OverallIterations: 17, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 903 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 173 mSDsluCounter, 354 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 598 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1295 IncrementalHoareTripleChecker+Invalid, 1893 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 598 mSolverCounterUnsat, 248 mSDtfsCounter, 1295 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2698 GetRequests, 2634 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1185 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 164/224 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, ConComCheckerStatistics: No data available - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L31] char string_A[5], string_B[5]; [L32] int i, j, nc_A, nc_B, found=0; [L35] i=0 VAL [i=0, string_A={4:0}, string_B={16:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=1, string_A={4:0}, string_B={16:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=2, string_A={4:0}, string_B={16:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=3, string_A={4:0}, string_B={16:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=4, string_A={4:0}, string_B={16:0}] [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ VAL [i=5, string_A={4:0}, string_B={16:0}] [L35] COND FALSE !(i<5) [L37] EXPR string_A[5 -1] VAL [string_A={4:0}, string_B={16:0}] [L37] COND FALSE !(!(string_A[5 -1]=='\0')) [L39] i=0 VAL [i=0, string_A={4:0}, string_B={16:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=1, string_A={4:0}, string_B={16:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=2, string_A={4:0}, string_B={16:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=3, string_A={4:0}, string_B={16:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=4, string_A={4:0}, string_B={16:0}] [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ VAL [i=5, string_A={4:0}, string_B={16:0}] [L39] COND FALSE !(i<5) [L41] EXPR string_B[5 -1] VAL [string_A={4:0}, string_B={16:0}] [L41] COND FALSE !(!(string_B[5 -1]=='\0')) [L43] nc_A = 0 VAL [nc_A=0, string_A={4:0}, string_B={16:0}] [L44] EXPR string_A[nc_A] VAL [nc_A=0, string_A={4:0}, string_B={16:0}] [L44] COND TRUE string_A[nc_A]!='\0' [L45] nc_A++ VAL [nc_A=1, string_A={4:0}, string_B={16:0}] [L44] EXPR string_A[nc_A] VAL [nc_A=1, string_A={4:0}, string_B={16:0}] [L44] COND FALSE !(string_A[nc_A]!='\0') [L47] nc_B = 0 VAL [nc_A=1, nc_B=0, string_A={4:0}, string_B={16:0}] [L48] EXPR string_B[nc_B] VAL [nc_A=1, nc_B=0, string_A={4:0}, string_B={16:0}] [L48] COND TRUE string_B[nc_B]!='\0' [L49] nc_B++ VAL [nc_A=1, nc_B=1, string_A={4:0}, string_B={16:0}] [L48] EXPR string_B[nc_B] VAL [nc_A=1, nc_B=1, string_A={4:0}, string_B={16:0}] [L48] COND FALSE !(string_B[nc_B]!='\0') [L51] COND FALSE !(!(nc_B >= nc_A)) [L54] EXPR j=0 [L54] i=j=0 VAL [i=0, j=0, nc_A=1, nc_B=1, string_A={4:0}, string_B={16:0}] [L55] COND TRUE (inc_B-1)<