./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i --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_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/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_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/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_e0ed1300-adc2-4cd0-b019-61fbf23905f6/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 8c067034d8676e097c36fd744c405062d302fbf2 ................................................................................................................................................................................................................................................................................................ 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 03:18:00,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 03:18:00,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 03:18:00,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 03:18:00,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 03:18:00,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 03:18:00,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 03:18:00,591 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 03:18:00,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 03:18:00,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 03:18:00,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 03:18:00,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 03:18:00,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 03:18:00,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 03:18:00,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 03:18:00,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 03:18:00,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 03:18:00,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 03:18:00,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 03:18:00,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 03:18:00,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 03:18:00,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 03:18:00,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 03:18:00,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 03:18:00,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 03:18:00,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 03:18:00,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 03:18:00,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 03:18:00,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 03:18:00,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 03:18:00,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 03:18:00,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 03:18:00,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 03:18:00,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 03:18:00,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 03:18:00,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 03:18:00,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 03:18:00,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 03:18:00,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 03:18:00,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 03:18:00,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 03:18:00,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-13 03:18:00,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 03:18:00,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 03:18:00,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 03:18:00,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-13 03:18:00,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 03:18:00,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 03:18:00,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 03:18:00,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 03:18:00,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 03:18:00,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 03:18:00,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 03:18:00,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 03:18:00,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 03:18:00,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 03:18:00,710 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 03:18:00,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 03:18:00,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 03:18:00,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 03:18:00,710 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-13 03:18:00,711 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-13 03:18:00,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 03:18:00,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 03:18:00,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 03:18:00,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 03:18:00,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 03:18:00,712 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-13 03:18:00,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 03:18:00,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 03:18:00,713 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_e0ed1300-adc2-4cd0-b019-61fbf23905f6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c067034d8676e097c36fd744c405062d302fbf2 [2021-10-13 03:18:00,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 03:18:01,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 03:18:01,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 03:18:01,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 03:18:01,018 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 03:18:01,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-13 03:18:01,094 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/data/51627b89c/06f94c248a834cec8b09e4f24ee5e458/FLAG98ad01de1 [2021-10-13 03:18:01,629 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 03:18:01,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i [2021-10-13 03:18:01,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/data/51627b89c/06f94c248a834cec8b09e4f24ee5e458/FLAG98ad01de1 [2021-10-13 03:18:02,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/data/51627b89c/06f94c248a834cec8b09e4f24ee5e458 [2021-10-13 03:18:02,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 03:18:02,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 03:18:02,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 03:18:02,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 03:18:02,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 03:18:02,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2890eb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02, skipping insertion in model container [2021-10-13 03:18:02,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 03:18:02,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 03:18:02,344 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_e0ed1300-adc2-4cd0-b019-61fbf23905f6/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-13 03:18:02,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 03:18:02,369 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 03:18:02,387 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_e0ed1300-adc2-4cd0-b019-61fbf23905f6/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound1.i[951,964] [2021-10-13 03:18:02,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 03:18:02,426 INFO L208 MainTranslator]: Completed translation [2021-10-13 03:18:02,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02 WrapperNode [2021-10-13 03:18:02,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 03:18:02,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 03:18:02,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 03:18:02,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 03:18:02,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 03:18:02,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 03:18:02,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 03:18:02,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 03:18:02,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 03:18:02,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 03:18:02,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 03:18:02,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 03:18:02,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-13 03:18:02,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/z3 [2021-10-13 03:18:02,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-13 03:18:02,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-13 03:18:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 03:18:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 03:18:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 03:18:02,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 03:18:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-10-13 03:18:02,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-10-13 03:18:02,874 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 03:18:02,874 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 03:18:02,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:18:02 BoogieIcfgContainer [2021-10-13 03:18:02,877 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 03:18:02,878 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-13 03:18:02,878 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-13 03:18:02,890 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-13 03:18:02,890 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:18:02" (1/1) ... [2021-10-13 03:18:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 03:18:02,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2021-10-13 03:18:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2021-10-13 03:18:02,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 03:18:02,939 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:02,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 03:18:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 17 states and 21 transitions. [2021-10-13 03:18:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-10-13 03:18:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 03:18:03,157 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:03,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 03:18:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 19 states and 24 transitions. [2021-10-13 03:18:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-10-13 03:18:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 03:18:03,328 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:03,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:03,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 03:18:03,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 03:18:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 03:18:04,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 27 states and 42 transitions. [2021-10-13 03:18:04,101 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 42 transitions. [2021-10-13 03:18:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 03:18:04,106 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:04,106 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:04,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 03:18:04,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 03:18:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 03:18:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 30 states and 48 transitions. [2021-10-13 03:18:04,890 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 48 transitions. [2021-10-13 03:18:04,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 03:18:04,891 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:04,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:04,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 03:18:04,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 03:18:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 03:18:05,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:05,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 30 states and 47 transitions. [2021-10-13 03:18:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2021-10-13 03:18:05,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 03:18:05,284 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:05,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:05,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 03:18:05,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 03:18:05,478 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 03:18:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 35 states and 59 transitions. [2021-10-13 03:18:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 59 transitions. [2021-10-13 03:18:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 03:18:05,924 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:05,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:05,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 03:18:05,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 03:18:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 03:18:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:06,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 37 states and 63 transitions. [2021-10-13 03:18:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 63 transitions. [2021-10-13 03:18:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 03:18:06,407 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-13 03:18:06,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 03:18:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 03:18:06,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 03:18:06,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 03:18:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 03:18:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-13 03:18:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 18 states and 20 transitions. [2021-10-13 03:18:06,878 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-13 03:18:06,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 03:18:06,879 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2021-10-13 03:18:06,884 INFO L759 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-10-13 03:18:06,945 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-13 03:18:06,949 INFO L565 CodeCheckObserver]: Invariant with dag size 15 [2021-10-13 03:18:06,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 13.10 03:18:06 ImpRootNode [2021-10-13 03:18:06,955 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-13 03:18:06,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 03:18:06,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 03:18:06,956 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 03:18:06,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:18:02" (3/4) ... [2021-10-13 03:18:06,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 03:18:06,965 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-10-13 03:18:06,968 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-13 03:18:06,969 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 03:18:06,969 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 03:18:06,969 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 03:18:07,012 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/witness.graphml [2021-10-13 03:18:07,012 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 03:18:07,014 INFO L168 Benchmark]: Toolchain (without parser) took 4910.55 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 63.1 MB in the beginning and 52.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:07,014 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory was 79.6 MB in the beginning and 79.6 MB in the end (delta: 57.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 03:18:07,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.30 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 75.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:07,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.61 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 73.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:07,016 INFO L168 Benchmark]: Boogie Preprocessor took 17.77 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 73.0 MB in the end (delta: 873.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:07,017 INFO L168 Benchmark]: RCFGBuilder took 385.13 ms. Allocated memory is still 100.7 MB. Free memory was 73.0 MB in the beginning and 61.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:07,017 INFO L168 Benchmark]: CodeCheck took 4077.28 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 61.9 MB in the beginning and 55.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:07,018 INFO L168 Benchmark]: Witness Printer took 56.34 ms. Allocated memory is still 123.7 MB. Free memory was 55.5 MB in the beginning and 52.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 03:18:07,021 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3969.3ms, OverallIterations: 9, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2880 SDtfs, 416 SDslu, 584 SDs, 0 SdLazy, 4698 SolverSat, 1634 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1024.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 752 GetRequests, 658 SyntacticMatches, 12 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2326 ImplicationChecksByTransitivity, 2410.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 40.7ms SsaConstructionTime, 155.6ms SatisfiabilityAnalysisTime, 1042.7ms InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 248 SizeOfPredicates, 5 NumberOfNonLiveVariables, 359 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 8/9 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: 21]: 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: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((A == r && counter == 0) && b == 1) && q == 0) || ((1 <= counter && A == r) && q == 0) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory was 79.6 MB in the beginning and 79.6 MB in the end (delta: 57.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.30 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 75.4 MB in the end (delta: -12.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.61 ms. Allocated memory is still 100.7 MB. Free memory was 75.4 MB in the beginning and 73.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.77 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 73.0 MB in the end (delta: 873.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 385.13 ms. Allocated memory is still 100.7 MB. Free memory was 73.0 MB in the beginning and 61.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * CodeCheck took 4077.28 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 61.9 MB in the beginning and 55.5 MB in the end (delta: 6.3 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Witness Printer took 56.34 ms. Allocated memory is still 123.7 MB. Free memory was 55.5 MB in the beginning and 52.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! [2021-10-13 03:18:07,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0ed1300-adc2-4cd0-b019-61fbf23905f6/bin/ukojak-fKGseLULKY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Ended with exit code 0 Received shutdown request...