./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_1b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_1b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi --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 de4c7bf005639409d0c5506b91694c0a93e2905c64b2cd28aafb6e9617d859e5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:01:27,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:01:27,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-24 23:01:27,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:01:27,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-24 23:01:27,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:01:27,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:01:27,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-24 23:01:27,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:01:27,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:01:27,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:01:27,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:01:27,880 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:01:27,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:01:27,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:01:27,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:01:27,882 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:01:27,883 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:01:27,883 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:01:27,883 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:01:27,884 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:01:27,884 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:01:27,885 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-24 23:01:27,886 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-24 23:01:27,886 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-24 23:01:27,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:01:27,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:01:27,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:01:27,888 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:01:27,888 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:01:27,889 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-24 23:01:27,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:01:27,891 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:01:27,891 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_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de4c7bf005639409d0c5506b91694c0a93e2905c64b2cd28aafb6e9617d859e5 [2023-11-24 23:01:28,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:01:28,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:01:28,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:01:28,238 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:01:28,238 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:01:28,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/../../sv-benchmarks/c/loop-simple/nested_1b.c [2023-11-24 23:01:31,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:01:31,677 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:01:31,678 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/sv-benchmarks/c/loop-simple/nested_1b.c [2023-11-24 23:01:31,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/data/7da08e27b/4056db4f46b74b3a83037a63d292908d/FLAGfcc55ad46 [2023-11-24 23:01:31,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/data/7da08e27b/4056db4f46b74b3a83037a63d292908d [2023-11-24 23:01:31,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:01:31,714 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:01:31,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:01:31,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:01:31,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:01:31,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:01:31" (1/1) ... [2023-11-24 23:01:31,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3acaa849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:31, skipping insertion in model container [2023-11-24 23:01:31,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:01:31" (1/1) ... [2023-11-24 23:01:31,747 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:01:31,945 WARN L240 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_c2c5a99c-765b-47f0-a133-266e3c747a18/sv-benchmarks/c/loop-simple/nested_1b.c[674,687] [2023-11-24 23:01:31,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:01:31,967 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:01:31,984 WARN L240 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_c2c5a99c-765b-47f0-a133-266e3c747a18/sv-benchmarks/c/loop-simple/nested_1b.c[674,687] [2023-11-24 23:01:31,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:01:32,000 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:01:32,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32 WrapperNode [2023-11-24 23:01:32,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:01:32,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:01:32,003 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:01:32,003 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:01:32,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,022 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,041 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-11-24 23:01:32,042 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:01:32,043 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:01:32,043 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:01:32,043 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:01:32,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,057 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,057 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,061 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,065 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:01:32,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:01:32,068 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:01:32,068 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:01:32,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-24 23:01:32,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/z3 [2023-11-24 23:01:32,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-24 23:01:32,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-24 23:01:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:01:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:01:32,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:01:32,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:01:32,205 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:01:32,208 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:01:32,311 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:01:32,340 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:01:32,340 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-24 23:01:32,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:01:32 BoogieIcfgContainer [2023-11-24 23:01:32,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:01:32,344 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-24 23:01:32,344 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-24 23:01:32,356 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-24 23:01:32,356 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:01:32" (1/1) ... [2023-11-24 23:01:32,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:01:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2023-11-24 23:01:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-11-24 23:01:32,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:01:32,428 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:32,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:32,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:32,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 8 states and 9 transitions. [2023-11-24 23:01:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-11-24 23:01:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:01:32,659 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:32,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 9 states and 11 transitions. [2023-11-24 23:01:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2023-11-24 23:01:32,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 23:01:32,897 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:32,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:33,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:33,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 10 states and 12 transitions. [2023-11-24 23:01:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2023-11-24 23:01:33,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-24 23:01:33,056 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:33,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 11 states and 13 transitions. [2023-11-24 23:01:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-11-24 23:01:33,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-24 23:01:33,235 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:33,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:33,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2023-11-24 23:01:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2023-11-24 23:01:33,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-24 23:01:33,441 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:33,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:01:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 23:01:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-24 23:01:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 13 states and 14 transitions. [2023-11-24 23:01:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-11-24 23:01:33,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:01:33,647 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-24 23:01:33,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:01:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:33,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:01:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:33,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 23:01:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 23:01:33,801 WARN L476 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2023-11-24 23:01:33,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 24.11 11:01:33 ImpRootNode [2023-11-24 23:01:33,838 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-24 23:01:33,840 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 23:01:33,840 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 23:01:33,841 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 23:01:33,841 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:01:32" (3/4) ... [2023-11-24 23:01:33,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 23:01:33,888 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/witness.graphml [2023-11-24 23:01:33,888 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 23:01:33,889 INFO L158 Benchmark]: Toolchain (without parser) took 2174.74ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 117.7MB in the beginning and 156.5MB in the end (delta: -38.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-11-24 23:01:33,890 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 157.3MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:01:33,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.80ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 107.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:01:33,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.93ms. Allocated memory is still 157.3MB. Free memory was 107.2MB in the beginning and 105.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:01:33,892 INFO L158 Benchmark]: Boogie Preprocessor took 23.88ms. Allocated memory is still 157.3MB. Free memory was 105.9MB in the beginning and 105.1MB in the end (delta: 843.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:01:33,893 INFO L158 Benchmark]: RCFGBuilder took 275.02ms. Allocated memory is still 157.3MB. Free memory was 104.7MB in the beginning and 95.5MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 23:01:33,894 INFO L158 Benchmark]: CodeCheck took 1494.82ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 95.5MB in the beginning and 158.6MB in the end (delta: -63.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:01:33,894 INFO L158 Benchmark]: Witness Printer took 47.98ms. Allocated memory is still 207.6MB. Free memory was 158.6MB in the beginning and 156.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 23:01:33,898 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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 18 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 287 GetRequests, 255 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 0/35 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: 23]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int a = 6; [L19] a = 0 VAL [a=0] [L19] COND TRUE a < 6 [L19] ++a VAL [a=1] [L19] COND TRUE a < 6 [L19] ++a VAL [a=2] [L19] COND TRUE a < 6 [L19] ++a VAL [a=3] [L19] COND TRUE a < 6 [L19] ++a VAL [a=4] [L19] COND TRUE a < 6 [L19] ++a VAL [a=5] [L19] COND TRUE a < 6 [L19] ++a VAL [a=6] [L19] COND FALSE !(a < 6) VAL [a=6] [L22] COND TRUE a == 6 VAL [a=6] [L23] reach_error() VAL [a=6] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 157.3MB. Free memory is still 103.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.80ms. Allocated memory is still 157.3MB. Free memory was 117.7MB in the beginning and 107.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.93ms. Allocated memory is still 157.3MB. Free memory was 107.2MB in the beginning and 105.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.88ms. Allocated memory is still 157.3MB. Free memory was 105.9MB in the beginning and 105.1MB in the end (delta: 843.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 275.02ms. Allocated memory is still 157.3MB. Free memory was 104.7MB in the beginning and 95.5MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1494.82ms. Allocated memory was 157.3MB in the beginning and 207.6MB in the end (delta: 50.3MB). Free memory was 95.5MB in the beginning and 158.6MB in the end (delta: -63.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 47.98ms. Allocated memory is still 207.6MB. Free memory was 158.6MB in the beginning and 156.5MB 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! [2023-11-24 23:01:33,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c2c5a99c-765b-47f0-a133-266e3c747a18/bin/ukojak-verify-afCqCEvfdi/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