./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_2_4.i --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_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/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_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/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_b2834ba2-9ee0-42ce-be6a-983c465ee010/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 c4ab638d88884b11d280586d03327428928a19b8179f4a6f29c31c8f46b59f77 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:48:31,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:48:31,221 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Default.epf [2024-11-08 23:48:31,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 23:48:31,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2024-11-08 23:48:31,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:48:31,258 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 23:48:31,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 23:48:31,260 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:48:31,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:48:31,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:48:31,261 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:48:31,261 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 23:48:31,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 23:48:31,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 23:48:31,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:48:31,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:48:31,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:48:31,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:48:31,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:48:31,267 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 23:48:31,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:48:31,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:48:31,271 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:48:31,271 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:48:31,272 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:48:31,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:48:31,272 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:48:31,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:48:31,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:48:31,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 23:48:31,274 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2024-11-08 23:48:31,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 23:48:31,276 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4ab638d88884b11d280586d03327428928a19b8179f4a6f29c31c8f46b59f77 [2024-11-08 23:48:31,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:48:31,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:48:31,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:48:31,631 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:48:31,631 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:48:31,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/combinations/gcd_1+newton_2_4.i Unable to find full path for "g++" [2024-11-08 23:48:33,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:48:33,860 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:48:33,860 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i [2024-11-08 23:48:33,869 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data/8fe153def/3e74282b5cfb48a880683854a57605e3/FLAGf06dfdeac [2024-11-08 23:48:33,884 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data/8fe153def/3e74282b5cfb48a880683854a57605e3 [2024-11-08 23:48:33,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:48:33,888 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:48:33,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:48:33,890 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:48:33,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:48:33,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:48:33" (1/1) ... [2024-11-08 23:48:33,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666a1137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:33, skipping insertion in model container [2024-11-08 23:48:33,901 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:48:33" (1/1) ... [2024-11-08 23:48:33,928 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:48:34,133 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[1226,1239] [2024-11-08 23:48:34,163 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[2807,2820] [2024-11-08 23:48:34,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:48:34,175 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:48:34,193 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[1226,1239] [2024-11-08 23:48:34,205 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[2807,2820] [2024-11-08 23:48:34,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:48:34,226 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:48:34,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34 WrapperNode [2024-11-08 23:48:34,226 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:48:34,227 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:48:34,228 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:48:34,228 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:48:34,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,267 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-08 23:48:34,267 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:48:34,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:48:34,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:48:34,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:48:34,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,287 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,291 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:48:34,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:48:34,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:48:34,298 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:48:34,299 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:48:34,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:48:34,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:48:34,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:48:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:48:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-08 23:48:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-08 23:48:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-08 23:48:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-08 23:48:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 23:48:34,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:48:34,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:48:34,455 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:48:34,457 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:48:34,694 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-08 23:48:34,695 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:48:34,784 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:48:34,784 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 23:48:34,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:48:34 BoogieIcfgContainer [2024-11-08 23:48:34,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:48:34,786 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:48:34,786 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:48:34,797 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:48:34,798 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:48:34" (1/1) ... [2024-11-08 23:48:34,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:48:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:48:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 27 states and 34 transitions. [2024-11-08 23:48:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-08 23:48:34,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 23:48:34,881 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:48:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:48:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:48:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:48:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:48:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 28 states and 35 transitions. [2024-11-08 23:48:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-08 23:48:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 23:48:35,330 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:48:35,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:48:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:48:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:48:35,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:48:35,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 28 states and 34 transitions. [2024-11-08 23:48:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-08 23:48:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:48:35,489 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:48:35,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:48:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:48:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:48:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:48:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 33 states and 43 transitions. [2024-11-08 23:48:36,188 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-08 23:48:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 23:48:36,189 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:48:36,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:48:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 23:48:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:48:40,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 23:48:40,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:48:43,364 WARN L873 $PredicateComparison]: unable to prove that (and (<= 1 |c_ULTIMATE.start_main1_~y~0#1|) (or (and (<= 0 (+ |c_ULTIMATE.start_gcd_test_~a#1| 128)) (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0) (exists ((v_y_5 Int)) (let ((.cse0 (* 256 v_y_5)) (.cse1 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (and (= (mod (+ 65280 .cse0 .cse1) |c_ULTIMATE.start_main1_~y~0#1|) 0) (<= 0 (+ 65408 .cse0 .cse1)) (<= (+ 65281 .cse0 .cse1) 0))))) (and (<= |c_ULTIMATE.start_gcd_test_~a#1| 127) (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|) (= (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_main1_~y~0#1|) 0))) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (= |c_ULTIMATE.start_main1_~y~0#1| |c_ULTIMATE.start_gcd_test_~b#1|)) is different from true [2024-11-08 23:48:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2024-11-08 23:48:54,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.31s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-11-08 23:48:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:48:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 35 states and 46 transitions. [2024-11-08 23:48:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2024-11-08 23:48:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 23:48:57,367 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:48:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:48:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 23:49:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:07,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-08 23:49:07,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:49:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:49:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:49:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 26 states and 30 transitions. [2024-11-08 23:49:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-08 23:49:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 23:49:14,183 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:49:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 23:49:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:49:14,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:49:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:49:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:49:14,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 23:49:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 23:49:14,274 WARN L473 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2024-11-08 23:49:14,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 08.11 11:49:14 ImpRootNode [2024-11-08 23:49:14,311 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2024-11-08 23:49:14,312 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 23:49:14,312 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 23:49:14,312 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 23:49:14,313 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:48:34" (3/4) ... [2024-11-08 23:49:14,316 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 23:49:14,319 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 23:49:14,321 INFO L158 Benchmark]: Toolchain (without parser) took 40431.46ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 132.2MB in the beginning and 120.2MB in the end (delta: 12.0MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2024-11-08 23:49:14,323 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:49:14,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 336.81ms. Allocated memory is still 172.0MB. Free memory was 132.2MB in the beginning and 118.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 23:49:14,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.23ms. Allocated memory is still 172.0MB. Free memory was 118.7MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:49:14,325 INFO L158 Benchmark]: Boogie Preprocessor took 28.35ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 115.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 23:49:14,327 INFO L158 Benchmark]: RCFGBuilder took 487.77ms. Allocated memory is still 172.0MB. Free memory was 114.9MB in the beginning and 142.2MB in the end (delta: -27.3MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2024-11-08 23:49:14,329 INFO L158 Benchmark]: CodeCheck took 39525.29ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 141.3MB in the beginning and 121.2MB in the end (delta: 20.0MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. [2024-11-08 23:49:14,330 INFO L158 Benchmark]: Witness Printer took 7.59ms. Allocated memory is still 207.6MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 23:49:14,333 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 3 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 39.5s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 12.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 211 IncrementalHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 30 mSDtfsCounter, 211 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 309 SyntacticMatches, 25 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 14.4s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 4 QuantifiedInterpolants, 362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/9 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 - UnprovableResult [Line: 102]: 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 someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 95. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) VAL [\old(x)=2] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) VAL [IN=2] [L93] CALL, EXPR fp(IN) VAL [\old(x)=2] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) VAL [IN=2] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=3] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L95] RET, EXPR f(x) VAL [IN=2, x=3] [L95] CALL, EXPR fp(x) VAL [\old(x)=3] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L95] RET, EXPR fp(x) VAL [IN=2, x=3] [L95] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=2] [L102] reach_error() VAL [IN=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 113.2MB. Free memory was 81.2MB in the beginning and 81.1MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 336.81ms. Allocated memory is still 172.0MB. Free memory was 132.2MB in the beginning and 118.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.23ms. Allocated memory is still 172.0MB. Free memory was 118.7MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.35ms. Allocated memory is still 172.0MB. Free memory was 116.5MB in the beginning and 115.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.77ms. Allocated memory is still 172.0MB. Free memory was 114.9MB in the beginning and 142.2MB in the end (delta: -27.3MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * CodeCheck took 39525.29ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 141.3MB in the beginning and 121.2MB in the end (delta: 20.0MB). Peak memory consumption was 54.6MB. Max. memory is 16.1GB. * Witness Printer took 7.59ms. Allocated memory is still 207.6MB. Free memory is still 120.2MB. There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-08 23:49:14,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/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_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/config/KojakReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_2_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/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 c4ab638d88884b11d280586d03327428928a19b8179f4a6f29c31c8f46b59f77 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 23:49:16,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 23:49:17,040 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/config/svcomp-Reach-32bit-Kojak_Bitvector.epf [2024-11-08 23:49:17,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 23:49:17,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 23:49:17,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2024-11-08 23:49:17,083 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 23:49:17,083 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 23:49:17,084 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 23:49:17,084 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 23:49:17,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 23:49:17,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 23:49:17,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 23:49:17,088 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 23:49:17,089 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 23:49:17,089 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 23:49:17,090 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 23:49:17,090 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 23:49:17,090 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 23:49:17,090 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 23:49:17,091 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 23:49:17,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 23:49:17,095 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 23:49:17,096 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2024-11-08 23:49:17,096 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2024-11-08 23:49:17,097 INFO L153 SettingsManager]: * Theory for external solver=ALL [2024-11-08 23:49:17,097 INFO L153 SettingsManager]: * Command for calling external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 23:49:17,097 INFO L153 SettingsManager]: * Choose which separate solver to use for tracechecks=External_ModelsAndUnsatCoreMode [2024-11-08 23:49:17,098 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 23:49:17,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:49:17,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 23:49:17,098 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 23:49:17,099 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 23:49:17,099 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-08 23:49:17,100 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 23:49:17,100 INFO L153 SettingsManager]: * Use separate solver for trace checks=false [2024-11-08 23:49:17,101 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4ab638d88884b11d280586d03327428928a19b8179f4a6f29c31c8f46b59f77 [2024-11-08 23:49:17,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 23:49:17,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 23:49:17,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 23:49:17,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 23:49:17,569 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 23:49:17,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/../../sv-benchmarks/c/combinations/gcd_1+newton_2_4.i Unable to find full path for "g++" [2024-11-08 23:49:19,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 23:49:19,801 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 23:49:19,805 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i [2024-11-08 23:49:19,819 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data/d4dc22c99/2c0ce333f1b54e00bde7e0b81d40e7d6/FLAG44e25f31b [2024-11-08 23:49:20,185 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/data/d4dc22c99/2c0ce333f1b54e00bde7e0b81d40e7d6 [2024-11-08 23:49:20,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 23:49:20,189 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 23:49:20,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 23:49:20,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 23:49:20,195 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 23:49:20,196 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7145c01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20, skipping insertion in model container [2024-11-08 23:49:20,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,221 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 23:49:20,475 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[1226,1239] [2024-11-08 23:49:20,519 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[2807,2820] [2024-11-08 23:49:20,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:49:20,542 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 23:49:20,561 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[1226,1239] [2024-11-08 23:49:20,587 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_b2834ba2-9ee0-42ce-be6a-983c465ee010/sv-benchmarks/c/combinations/gcd_1+newton_2_4.i[2807,2820] [2024-11-08 23:49:20,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 23:49:20,615 INFO L204 MainTranslator]: Completed translation [2024-11-08 23:49:20,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20 WrapperNode [2024-11-08 23:49:20,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 23:49:20,617 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 23:49:20,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 23:49:20,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 23:49:20,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,642 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,673 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 80 [2024-11-08 23:49:20,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 23:49:20,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 23:49:20,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 23:49:20,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 23:49:20,688 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,707 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,714 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 23:49:20,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 23:49:20,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 23:49:20,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 23:49:20,730 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 11:49:20" (1/1) ... [2024-11-08 23:49:20,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2024-11-08 23:49:20,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/z3 [2024-11-08 23:49:20,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2024-11-08 23:49:20,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2024-11-08 23:49:20,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 23:49:20,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-08 23:49:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-08 23:49:20,799 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-08 23:49:20,799 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-08 23:49:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-08 23:49:20,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 23:49:20,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 23:49:20,892 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 23:49:20,895 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 23:49:40,681 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-08 23:49:40,681 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 23:49:40,767 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 23:49:40,767 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 23:49:40,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:49:40 BoogieIcfgContainer [2024-11-08 23:49:40,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 23:49:40,768 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2024-11-08 23:49:40,768 INFO L270 PluginConnector]: Initializing CodeCheck... [2024-11-08 23:49:40,778 INFO L274 PluginConnector]: CodeCheck initialized [2024-11-08 23:49:40,779 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 11:49:40" (1/1) ... [2024-11-08 23:49:40,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 23:49:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:49:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 27 states and 34 transitions. [2024-11-08 23:49:40,852 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2024-11-08 23:49:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-08 23:49:40,858 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:49:40,859 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:49:40,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:49:40,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:49:40,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-08 23:49:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:41,039 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-08 23:49:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:41,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 23:49:41,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:49:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:49:41,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-08 23:49:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:49:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 28 states and 35 transitions. [2024-11-08 23:49:41,492 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-08 23:49:41,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 23:49:41,493 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:49:41,493 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:49:41,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:49:41,495 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:49:41,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-08 23:49:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:41,551 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-08 23:49:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:41,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 23:49:41,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:49:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:49:41,699 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Exception during sending of exit command (exit): Broken pipe [2024-11-08 23:49:41,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-08 23:49:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:49:41,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 28 states and 34 transitions. [2024-11-08 23:49:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-08 23:49:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 23:49:41,904 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:49:41,904 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:49:41,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:49:41,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:49:41,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-08 23:49:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:42,208 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-08 23:49:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:42,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 23:49:42,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:49:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:49:42,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-08 23:49:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:49:45,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 33 states and 43 transitions. [2024-11-08 23:49:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-11-08 23:49:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 23:49:45,390 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:49:45,390 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:49:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:49:45,392 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:49:45,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-08 23:49:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:46,305 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-08 23:49:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:49:49,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 23:49:49,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:49:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:49:57,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-08 23:50:05,859 WARN L286 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 27 DAG size of output: 26 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-08 23:50:09,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-08 23:50:14,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.46s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-08 23:50:15,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:50:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 35 states and 46 transitions. [2024-11-08 23:50:15,367 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2024-11-08 23:50:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 23:50:15,370 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:50:15,371 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:50:15,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:50:15,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:50:15,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-08 23:50:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:50:16,351 ERROR L567 CodeCheckObserver]: First Tracecheck threw exception Proofs are not supported [2024-11-08 23:50:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 23:50:19,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 23:50:19,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 23:50:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 23:50:27,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-08 23:50:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2024-11-08 23:50:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 26 states and 30 transitions. [2024-11-08 23:50:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-08 23:50:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 23:50:29,044 INFO L420 CodeCheckObserver]: Error Path is FOUND. [2024-11-08 23:50:29,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 23:50:29,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 [2024-11-08 23:50:29,049 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 23:50:29,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2834ba2-9ee0-42ce-be6a-983c465ee010/bin/ukojak-verify-ImItNfHLgk/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process