./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/config/KojakReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL --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 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 03:18:19,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 03:18:19,760 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/config/svcomp-Reach-32bit-Kojak_Default.epf [2023-11-19 03:18:19,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 03:18:19,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.Interpolating solver [2023-11-19 03:18:19,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 03:18:19,801 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 03:18:19,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2023-11-19 03:18:19,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 03:18:19,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 03:18:19,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 03:18:19,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 03:18:19,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 03:18:19,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 03:18:19,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 03:18:19,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 03:18:19,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 03:18:19,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 03:18:19,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 03:18:19,809 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 03:18:19,810 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 03:18:19,810 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 03:18:19,811 INFO L151 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2023-11-19 03:18:19,811 INFO L153 SettingsManager]: * Timeout in seconds=1000000 [2023-11-19 03:18:19,812 INFO L153 SettingsManager]: * Theory for external solver=ALL [2023-11-19 03:18:19,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 03:18:19,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:18:19,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 03:18:19,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 03:18:19,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 03:18:19,815 INFO L153 SettingsManager]: * Trace refinement strategy=PENGUIN [2023-11-19 03:18:19,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 03:18:19,816 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 03:18:19,816 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_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d89bfe4b4c4586e423a8e3ebdbb120ac074219803de53807cd9f075553c6e3a [2023-11-19 03:18:20,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 03:18:20,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 03:18:20,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 03:18:20,164 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 03:18:20,165 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 03:18:20,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/../../sv-benchmarks/c/verifythis/elimination_max_rec.c [2023-11-19 03:18:23,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 03:18:23,541 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 03:18:23,543 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/sv-benchmarks/c/verifythis/elimination_max_rec.c [2023-11-19 03:18:23,556 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/data/988676ff9/65bdb799213845208ede8ae41bb088e5/FLAGdfa1c98e0 [2023-11-19 03:18:23,572 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/data/988676ff9/65bdb799213845208ede8ae41bb088e5 [2023-11-19 03:18:23,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 03:18:23,576 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 03:18:23,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 03:18:23,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 03:18:23,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 03:18:23,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1acd69ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23, skipping insertion in model container [2023-11-19 03:18:23,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 03:18:23,757 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_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2023-11-19 03:18:23,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:18:23,789 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 03:18:23,799 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_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/sv-benchmarks/c/verifythis/elimination_max_rec.c[493,506] [2023-11-19 03:18:23,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 03:18:23,828 INFO L206 MainTranslator]: Completed translation [2023-11-19 03:18:23,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23 WrapperNode [2023-11-19 03:18:23,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 03:18:23,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 03:18:23,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 03:18:23,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 03:18:23,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,867 INFO L138 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-11-19 03:18:23,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 03:18:23,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 03:18:23,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 03:18:23,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 03:18:23,879 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,882 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,883 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,892 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,893 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 03:18:23,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 03:18:23,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 03:18:23,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 03:18:23,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:18:23" (1/1) ... [2023-11-19 03:18:23,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2023-11-19 03:18:23,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/z3 [2023-11-19 03:18:23,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2023-11-19 03:18:23,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2023-11-19 03:18:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 03:18:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 03:18:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 03:18:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 03:18:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-11-19 03:18:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-11-19 03:18:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 03:18:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 03:18:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 03:18:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 03:18:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 03:18:23,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 03:18:23,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 03:18:24,055 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 03:18:24,057 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 03:18:24,261 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 03:18:24,320 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 03:18:24,320 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 03:18:24,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:18:24 BoogieIcfgContainer [2023-11-19 03:18:24,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 03:18:24,326 INFO L112 PluginConnector]: ------------------------CodeCheck---------------------------- [2023-11-19 03:18:24,326 INFO L270 PluginConnector]: Initializing CodeCheck... [2023-11-19 03:18:24,338 INFO L274 PluginConnector]: CodeCheck initialized [2023-11-19 03:18:24,339 INFO L184 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:18:24" (1/1) ... [2023-11-19 03:18:24,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 03:18:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:18:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 26 states and 30 transitions. [2023-11-19 03:18:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-19 03:18:24,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 03:18:24,416 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:18:24,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:18:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:18:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:18:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:18:25,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 31 states and 38 transitions. [2023-11-19 03:18:25,210 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-19 03:18:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 03:18:25,213 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:18:25,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:18:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:18:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 03:18:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:18:26,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 39 states and 52 transitions. [2023-11-19 03:18:26,459 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2023-11-19 03:18:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 03:18:26,462 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:18:26,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:18:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:18:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 03:18:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:18:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 47 states and 68 transitions. [2023-11-19 03:18:27,416 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2023-11-19 03:18:27,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 03:18:27,418 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:18:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:18:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:18:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 03:18:28,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:18:28,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 51 states and 75 transitions. [2023-11-19 03:18:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2023-11-19 03:18:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 03:18:28,833 INFO L423 CodeCheckObserver]: Error Path is FOUND. [2023-11-19 03:18:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 03:18:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 03:18:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 03:18:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2023-11-19 03:18:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 28 states and 33 transitions. [2023-11-19 03:18:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2023-11-19 03:18:29,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 03:18:29,271 WARN L420 CodeCheckObserver]: This Program is SAFE, Check terminated with 6 iterations. [2023-11-19 03:18:29,280 INFO L751 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2023-11-19 03:18:29,347 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2023-11-19 03:18:29,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 19.11 03:18:29 ImpRootNode [2023-11-19 03:18:29,352 INFO L131 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2023-11-19 03:18:29,353 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 03:18:29,353 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 03:18:29,353 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 03:18:29,354 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:18:24" (3/4) ... [2023-11-19 03:18:29,358 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 03:18:29,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 03:18:29,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2023-11-19 03:18:29,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 03:18:29,370 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-11-19 03:18:29,370 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-19 03:18:29,370 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 03:18:29,371 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 03:18:29,487 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/witness.graphml [2023-11-19 03:18:29,488 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/witness.yml [2023-11-19 03:18:29,489 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 03:18:29,490 INFO L158 Benchmark]: Toolchain (without parser) took 5914.20ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 128.9MB in the beginning and 115.4MB in the end (delta: 13.5MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2023-11-19 03:18:29,490 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 125.8MB. Free memory was 99.5MB in the beginning and 99.4MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 03:18:29,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.94ms. Allocated memory is still 159.4MB. Free memory was 128.9MB in the beginning and 117.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 03:18:29,492 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.80ms. Allocated memory is still 159.4MB. Free memory was 117.9MB in the beginning and 116.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:18:29,492 INFO L158 Benchmark]: Boogie Preprocessor took 29.54ms. Allocated memory is still 159.4MB. Free memory was 116.5MB in the beginning and 115.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 03:18:29,493 INFO L158 Benchmark]: RCFGBuilder took 427.00ms. Allocated memory is still 159.4MB. Free memory was 115.1MB in the beginning and 99.7MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 03:18:29,493 INFO L158 Benchmark]: CodeCheck took 5025.66ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 99.7MB in the beginning and 120.6MB in the end (delta: -20.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 03:18:29,494 INFO L158 Benchmark]: Witness Printer took 136.67ms. Allocated memory is still 192.9MB. Free memory was 120.6MB in the beginning and 115.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 03:18:29,497 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 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 157 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 501 IncrementalHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 157 mSolverCounterUnsat, 123 mSDtfsCounter, 501 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1020 GetRequests, 947 SyntacticMatches, 15 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 712 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 29/49 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 - PositiveResult [Line: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 125.8MB. Free memory was 99.5MB in the beginning and 99.4MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.94ms. Allocated memory is still 159.4MB. Free memory was 128.9MB in the beginning and 117.9MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.80ms. Allocated memory is still 159.4MB. Free memory was 117.9MB in the beginning and 116.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.54ms. Allocated memory is still 159.4MB. Free memory was 116.5MB in the beginning and 115.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 427.00ms. Allocated memory is still 159.4MB. Free memory was 115.1MB in the beginning and 99.7MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * CodeCheck took 5025.66ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 99.7MB in the beginning and 120.6MB in the end (delta: -20.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 136.67ms. Allocated memory is still 192.9MB. Free memory was 120.6MB in the beginning and 115.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2023-11-19 03:18:29,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_241ccb95-c420-4b97-9f0e-c14bbf98f1c6/bin/ukojak-verify-G8NBE6pJGL/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 Result: TRUE