./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/config/KojakReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY --witnessprinter.witness.filename witness.graphml --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 4099afe4d4ae3c88800047494721799286636d7a .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 04:13:19,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 04:13:19,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 04:13:19,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 04:13:19,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 04:13:19,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 04:13:19,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 04:13:19,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 04:13:19,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 04:13:19,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 04:13:19,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 04:13:19,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 04:13:19,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 04:13:19,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 04:13:19,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 04:13:19,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 04:13:19,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 04:13:19,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 04:13:19,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 04:13:19,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 04:13:19,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 04:13:19,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 04:13:19,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 04:13:19,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 04:13:19,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 04:13:19,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 04:13:19,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 04:13:19,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 04:13:19,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 04:13:19,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 04:13:19,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 04:13:19,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 04:13:19,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 04:13:19,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 04:13:19,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 04:13:19,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 04:13:19,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 04:13:19,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 04:13:19,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 04:13:19,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 04:13:19,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 04:13:19,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-13 04:13:19,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 04:13:19,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 04:13:19,902 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 04:13:19,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-13 04:13:19,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 04:13:19,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 04:13:19,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 04:13:19,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 04:13:19,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 04:13:19,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 04:13:19,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 04:13:19,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 04:13:19,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 04:13:19,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 04:13:19,912 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 04:13:19,912 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 04:13:19,912 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 04:13:19,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 04:13:19,913 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 04:13:19,913 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 04:13:19,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 04:13:19,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:13:19,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 04:13:19,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 04:13:19,914 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 04:13:19,914 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 04:13:19,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 04:13:19,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 04:13:19,915 INFO L138 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_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4099afe4d4ae3c88800047494721799286636d7a [2021-10-13 04:13:20,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 04:13:20,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 04:13:20,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 04:13:20,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 04:13:20,227 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 04:13:20,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-10-13 04:13:20,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/data/ed09e2467/a4bc5c86bca74467857a2fe0d103dbfd/FLAGb64531bc7 [2021-10-13 04:13:20,720 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 04:13:20,721 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-10-13 04:13:20,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/data/ed09e2467/a4bc5c86bca74467857a2fe0d103dbfd/FLAGb64531bc7 [2021-10-13 04:13:21,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/data/ed09e2467/a4bc5c86bca74467857a2fe0d103dbfd [2021-10-13 04:13:21,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 04:13:21,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 04:13:21,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 04:13:21,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 04:13:21,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 04:13:21,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ffb083 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21, skipping insertion in model container [2021-10-13 04:13:21,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 04:13:21,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 04:13:21,307 WARN L228 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_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-10-13 04:13:21,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:13:21,338 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 04:13:21,349 WARN L228 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_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-10-13 04:13:21,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 04:13:21,372 INFO L208 MainTranslator]: Completed translation [2021-10-13 04:13:21,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21 WrapperNode [2021-10-13 04:13:21,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 04:13:21,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 04:13:21,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 04:13:21,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 04:13:21,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 04:13:21,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 04:13:21,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 04:13:21,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 04:13:21,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 04:13:21,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 04:13:21,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 04:13:21,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 04:13:21,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,443 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 04:13:21,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/z3 [2021-10-13 04:13:21,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 04:13:21,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 04:13:21,521 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-10-13 04:13:21,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-10-13 04:13:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 04:13:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-10-13 04:13:21,522 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-10-13 04:13:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 04:13:21,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 04:13:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 04:13:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 04:13:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 04:13:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-13 04:13:21,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-13 04:13:21,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 04:13:21,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 04:13:21,915 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 04:13:21,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:13:21 BoogieIcfgContainer [2021-10-13 04:13:21,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 04:13:21,918 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 04:13:21,919 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 04:13:21,937 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 04:13:21,938 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:13:21" (1/1) ... [2021-10-13 04:13:21,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 04:13:21,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:13:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 29 states and 35 transitions. [2021-10-13 04:13:21,986 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-10-13 04:13:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 04:13:21,991 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:13:21,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:13:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:13:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 04:13:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:13:22,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 34 states and 44 transitions. [2021-10-13 04:13:22,503 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-10-13 04:13:22,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 04:13:22,505 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:13:22,505 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:13:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:13:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 04:13:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:13:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 34 states and 43 transitions. [2021-10-13 04:13:22,718 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-10-13 04:13:22,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 04:13:22,721 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:13:22,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:13:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:13:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 04:13:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:13:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 43 states and 59 transitions. [2021-10-13 04:13:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2021-10-13 04:13:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 04:13:23,551 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:13:23,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:13:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:13:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 04:13:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:13:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 50 states and 74 transitions. [2021-10-13 04:13:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 74 transitions. [2021-10-13 04:13:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-13 04:13:24,177 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:13:24,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:13:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:13:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-13 04:13:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:13:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 55 states and 83 transitions. [2021-10-13 04:13:25,061 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions. [2021-10-13 04:13:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-13 04:13:25,066 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 04:13:25,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 04:13:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 04:13:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-13 04:13:25,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 04:13:25,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 32 states and 40 transitions. [2021-10-13 04:13:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-10-13 04:13:25,384 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 04:13:25,384 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2021-10-13 04:13:25,394 INFO L759 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-10-13 04:13:25,484 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-13 04:13:25,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 04:13:25 ImpRootNode [2021-10-13 04:13:25,489 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 04:13:25,489 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 04:13:25,489 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 04:13:25,490 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 04:13:25,490 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 04:13:21" (3/4) ... [2021-10-13 04:13:25,493 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 04:13:25,499 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-10-13 04:13:25,499 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-10-13 04:13:25,499 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-10-13 04:13:25,504 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-10-13 04:13:25,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 04:13:25,505 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 04:13:25,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 04:13:25,550 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 04:13:25,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 04:13:25,552 INFO L168 Benchmark]: Toolchain (without parser) took 4418.07 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 89.2 MB in the beginning and 118.3 MB in the end (delta: -29.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:13:25,553 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 25.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:13:25,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.70 ms. Allocated memory is still 123.7 MB. Free memory was 88.8 MB in the beginning and 99.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 04:13:25,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.75 ms. Allocated memory is still 123.7 MB. Free memory was 99.3 MB in the beginning and 97.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 04:13:25,555 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 123.7 MB. Free memory was 97.9 MB in the beginning and 96.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 04:13:25,555 INFO L168 Benchmark]: RCFGBuilder took 483.16 ms. Allocated memory is still 123.7 MB. Free memory was 96.4 MB in the beginning and 82.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 04:13:25,556 INFO L168 Benchmark]: CodeCheck took 3570.22 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 82.2 MB in the beginning and 121.4 MB in the end (delta: -39.3 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. [2021-10-13 04:13:25,556 INFO L168 Benchmark]: Witness Printer took 61.80 ms. Allocated memory is still 148.9 MB. Free memory was 121.4 MB in the beginning and 118.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 04:13:25,559 INFO L339 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3428.6ms, OverallIterations: 7, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 988 SDtfs, 156 SDslu, 16 SDs, 0 SdLazy, 2444 SolverSat, 732 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 878.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1332 GetRequests, 1259 SyntacticMatches, 15 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1805.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 44.3ms SsaConstructionTime, 275.6ms SatisfiabilityAnalysisTime, 1153.5ms InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 795 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 66/87 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 83.9 MB. Free memory was 54.8 MB in the beginning and 54.8 MB in the end (delta: 25.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.70 ms. Allocated memory is still 123.7 MB. Free memory was 88.8 MB in the beginning and 99.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.75 ms. Allocated memory is still 123.7 MB. Free memory was 99.3 MB in the beginning and 97.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 123.7 MB. Free memory was 97.9 MB in the beginning and 96.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 483.16 ms. Allocated memory is still 123.7 MB. Free memory was 96.4 MB in the beginning and 82.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * CodeCheck took 3570.22 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 82.2 MB in the beginning and 121.4 MB in the end (delta: -39.3 MB). Peak memory consumption was 47.6 MB. Max. memory is 16.1 GB. * Witness Printer took 61.80 ms. Allocated memory is still 148.9 MB. Free memory was 121.4 MB in the beginning and 118.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! [2021-10-13 04:13:25,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ef5fc67c-66ee-450e-b9ff-f248e9558a8b/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...