./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk --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 dc138f274319e5e58145eabf3fb84043b6d1bd3c616751e51efeb5e2ee2997a6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 00:43:13,144 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 00:43:13,249 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-09 00:43:13,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 00:43:13,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-09 00:43:13,295 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 00:43:13,296 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 00:43:13,296 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-09 00:43:13,298 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 00:43:13,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 00:43:13,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 00:43:13,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 00:43:13,303 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 00:43:13,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 00:43:13,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 00:43:13,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 00:43:13,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 00:43:13,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 00:43:13,309 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 00:43:13,310 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 00:43:13,310 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 00:43:13,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 00:43:13,311 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 00:43:13,312 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-09 00:43:13,312 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-09 00:43:13,312 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-09 00:43:13,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 00:43:13,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:43:13,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 00:43:13,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 00:43:13,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 00:43:13,318 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-09 00:43:13,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 00:43:13,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc138f274319e5e58145eabf3fb84043b6d1bd3c616751e51efeb5e2ee2997a6 [2024-11-09 00:43:13,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 00:43:13,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 00:43:13,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 00:43:13,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 00:43:13,707 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 00:43:13,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/loop-acceleration/underapprox_2-1.c Unable to find full path for "g++" [2024-11-09 00:43:15,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 00:43:15,992 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 00:43:15,993 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/sv-benchmarks/c/loop-acceleration/underapprox_2-1.c [2024-11-09 00:43:16,005 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/data/aab2ef363/b80cff491e104f479fc7a5b1922da34e/FLAGac98138f5 [2024-11-09 00:43:16,379 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/data/aab2ef363/b80cff491e104f479fc7a5b1922da34e [2024-11-09 00:43:16,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 00:43:16,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 00:43:16,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 00:43:16,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 00:43:16,397 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 00:43:16,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8b6ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16, skipping insertion in model container [2024-11-09 00:43:16,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,426 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 00:43:16,622 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_fb2ff49b-7615-4d07-b653-6908bcfdb0de/sv-benchmarks/c/loop-acceleration/underapprox_2-1.c[327,340] [2024-11-09 00:43:16,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:43:16,657 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 00:43:16,672 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_fb2ff49b-7615-4d07-b653-6908bcfdb0de/sv-benchmarks/c/loop-acceleration/underapprox_2-1.c[327,340] [2024-11-09 00:43:16,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 00:43:16,700 INFO L204 MainTranslator]: Completed translation [2024-11-09 00:43:16,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16 WrapperNode [2024-11-09 00:43:16,700 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 00:43:16,702 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 00:43:16,702 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 00:43:16,703 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 00:43:16,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,740 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2024-11-09 00:43:16,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 00:43:16,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 00:43:16,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 00:43:16,743 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 00:43:16,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 00:43:16,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 00:43:16,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 00:43:16,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 00:43:16,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 12:43:16" (1/1) ... [2024-11-09 00:43:16,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-09 00:43:16,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-09 00:43:16,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-09 00:43:16,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-09 00:43:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 00:43:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 00:43:16,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 00:43:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 00:43:16,946 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 00:43:16,949 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 00:43:17,140 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-09 00:43:17,141 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 00:43:17,183 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 00:43:17,184 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 00:43:17,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:43:17 BoogieIcfgContainer [2024-11-09 00:43:17,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 00:43:17,186 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-09 00:43:17,187 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-09 00:43:17,200 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-09 00:43:17,201 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:43:17" (1/1) ... [2024-11-09 00:43:17,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 00:43:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2024-11-09 00:43:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2024-11-09 00:43:17,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 00:43:17,297 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:17,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:43:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:43:17,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 11 states and 12 transitions. [2024-11-09 00:43:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2024-11-09 00:43:17,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 00:43:17,790 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:17,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:43:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:43:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:17,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-11-09 00:43:17,945 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-11-09 00:43:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 00:43:17,946 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:17,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:43:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:43:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2024-11-09 00:43:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2024-11-09 00:43:18,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 00:43:18,335 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:43:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:43:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-09 00:43:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-09 00:43:18,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 00:43:18,838 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:18,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:43:19,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:43:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2024-11-09 00:43:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2024-11-09 00:43:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 00:43:19,459 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:19,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:43:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:43:20,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-09 00:43:20,021 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-09 00:43:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 00:43:20,022 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:20,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 00:43:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 00:43:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-09 00:43:20,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-11-09 00:43:20,622 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-11-09 00:43:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 00:43:20,623 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-09 00:43:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 00:43:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:43:20,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:43:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:43:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:43:20,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 00:43:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 00:43:20,721 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2024-11-09 00:43:20,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.11 12:43:20 ImpRootNode [2024-11-09 00:43:20,759 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-09 00:43:20,759 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 00:43:20,760 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 00:43:20,760 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 00:43:20,762 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 12:43:17" (3/4) ... [2024-11-09 00:43:20,764 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 00:43:20,843 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/witness.graphml [2024-11-09 00:43:20,847 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 00:43:20,849 INFO L158 Benchmark]: Toolchain (without parser) took 4464.34ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 84.1MB in the beginning and 120.1MB in the end (delta: -36.0MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2024-11-09 00:43:20,849 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 00:43:20,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.16ms. Allocated memory is still 125.8MB. Free memory was 83.8MB in the beginning and 71.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 00:43:20,850 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.72ms. Allocated memory is still 125.8MB. Free memory was 71.8MB in the beginning and 70.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:43:20,851 INFO L158 Benchmark]: Boogie Preprocessor took 28.84ms. Allocated memory is still 125.8MB. Free memory was 70.5MB in the beginning and 69.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:43:20,851 INFO L158 Benchmark]: RCFGBuilder took 413.39ms. Allocated memory is still 125.8MB. Free memory was 69.4MB in the beginning and 59.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-09 00:43:20,856 INFO L158 Benchmark]: CodeCheck took 3572.95ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 59.5MB in the beginning and 122.2MB in the end (delta: -62.7MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2024-11-09 00:43:20,857 INFO L158 Benchmark]: Witness Printer took 88.20ms. Allocated memory is still 188.7MB. Free memory was 122.2MB in the beginning and 120.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 00:43:20,863 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 8, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 97 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 222 IncrementalHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 21 mSDtfsCounter, 222 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 445 GetRequests, 381 SyntacticMatches, 28 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 315 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 0/55 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; VAL [x=0, y=1] [L16] COND FALSE !(x < 6) VAL [x=0, y=1] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=1, y=2] [L16] COND FALSE !(x < 6) VAL [x=1, y=2] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=2, y=4] [L16] COND FALSE !(x < 6) VAL [x=2, y=4] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=3, y=8] [L16] COND FALSE !(x < 6) VAL [x=3, y=8] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=4, y=16] [L16] COND FALSE !(x < 6) VAL [x=4, y=16] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=5, y=32] [L16] COND FALSE !(x < 6) VAL [x=5, y=32] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=6, y=64] [L16] COND TRUE x < 6 VAL [x=6, y=64] [L21] CALL __VERIFIER_assert(x != 6) [L6] COND TRUE !(cond) [L7] reach_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 125.8MB. Free memory is still 101.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.16ms. Allocated memory is still 125.8MB. Free memory was 83.8MB in the beginning and 71.8MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.72ms. Allocated memory is still 125.8MB. Free memory was 71.8MB in the beginning and 70.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.84ms. Allocated memory is still 125.8MB. Free memory was 70.5MB in the beginning and 69.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.39ms. Allocated memory is still 125.8MB. Free memory was 69.4MB in the beginning and 59.5MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 3572.95ms. Allocated memory was 125.8MB in the beginning and 188.7MB in the end (delta: 62.9MB). Free memory was 59.5MB in the beginning and 122.2MB in the end (delta: -62.7MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 88.20ms. Allocated memory is still 188.7MB. Free memory was 122.2MB in the beginning and 120.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-11-09 00:43:20,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb2ff49b-7615-4d07-b653-6908bcfdb0de/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE