./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 aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ --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 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 01:28:42,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 01:28:42,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 01:28:42,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 01:28:42,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 01:28:42,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 01:28:42,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 01:28:42,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 01:28:42,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 01:28:42,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 01:28:42,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 01:28:42,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 01:28:42,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 01:28:42,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 01:28:42,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 01:28:42,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 01:28:42,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 01:28:42,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 01:28:42,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 01:28:42,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 01:28:42,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 01:28:42,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 01:28:42,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 01:28:42,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 01:28:42,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 01:28:42,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 01:28:42,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 01:28:42,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 01:28:42,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 01:28:42,722 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 01:28:42,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 01:28:42,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 01:28:42,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 01:28:42,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 01:28:42,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 01:28:42,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 01:28:42,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 01:28:42,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 01:28:42,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 01:28:42,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 01:28:42,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 01:28:42,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 01:28:42,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 01:28:42,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 01:28:42,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 01:28:42,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 01:28:42,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 01:28:42,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 01:28:42,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 01:28:42,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 01:28:42,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 01:28:42,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 01:28:42,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 01:28:42,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 01:28:42,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 01:28:42,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 01:28:42,791 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 01:28:42,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 01:28:42,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 01:28:42,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 01:28:42,791 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 01:28:42,792 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 01:28:42,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 01:28:42,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:28:42,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 01:28:42,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 01:28:42,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 01:28:42,793 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 01:28:42,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 01:28:42,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 01:28:42,793 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_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a80fea07b3dad363ac033c87feb8bfcf28a57d2e75bc95b67f90908b133efe1 [2021-11-23 01:28:43,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 01:28:43,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 01:28:43,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 01:28:43,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 01:28:43,175 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 01:28:43,177 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-11-23 01:28:43,271 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/data/0f41d970a/c7b5640a654045f293c8da7fdc71b9fc/FLAG8f41fffa5 [2021-11-23 01:28:43,804 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 01:28:43,804 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c [2021-11-23 01:28:43,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/data/0f41d970a/c7b5640a654045f293c8da7fdc71b9fc/FLAG8f41fffa5 [2021-11-23 01:28:44,129 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/data/0f41d970a/c7b5640a654045f293c8da7fdc71b9fc [2021-11-23 01:28:44,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 01:28:44,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 01:28:44,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 01:28:44,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 01:28:44,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 01:28:44,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459543b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44, skipping insertion in model container [2021-11-23 01:28:44,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 01:28:44,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 01:28:44,356 WARN L230 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_f227ec10-1f66-4e47-af9a-666d13117012/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-11-23 01:28:44,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:28:44,386 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 01:28:44,398 WARN L230 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_f227ec10-1f66-4e47-af9a-666d13117012/sv-benchmarks/c/verifythis/elimination_max_rec_onepoint.c[502,515] [2021-11-23 01:28:44,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 01:28:44,422 INFO L208 MainTranslator]: Completed translation [2021-11-23 01:28:44,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44 WrapperNode [2021-11-23 01:28:44,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 01:28:44,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 01:28:44,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 01:28:44,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 01:28:44,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,465 INFO L137 Inliner]: procedures = 19, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2021-11-23 01:28:44,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 01:28:44,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 01:28:44,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 01:28:44,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 01:28:44,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 01:28:44,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 01:28:44,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 01:28:44,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 01:28:44,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 01:28:44,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 01:28:44,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 01:28:44,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 01:28:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 01:28:44,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 01:28:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 01:28:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 01:28:44,615 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-11-23 01:28:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-11-23 01:28:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 01:28:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 01:28:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 01:28:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 01:28:44,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 01:28:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 01:28:44,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 01:28:44,729 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 01:28:44,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 01:28:44,923 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 01:28:44,962 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 01:28:44,962 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 01:28:44,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:44 BoogieIcfgContainer [2021-11-23 01:28:44,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 01:28:44,966 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 01:28:44,966 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 01:28:44,985 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 01:28:44,986 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:44" (1/1) ... [2021-11-23 01:28:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 01:28:45,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 29 states and 35 transitions. [2021-11-23 01:28:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-11-23 01:28:45,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 01:28:45,112 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:45,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:28:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 34 states and 44 transitions. [2021-11-23 01:28:45,635 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-11-23 01:28:45,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 01:28:45,637 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:45,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 01:28:45,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 34 states and 43 transitions. [2021-11-23 01:28:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-11-23 01:28:45,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 01:28:45,839 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:45,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 01:28:46,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 43 states and 59 transitions. [2021-11-23 01:28:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 59 transitions. [2021-11-23 01:28:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 01:28:46,811 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:46,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:47,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 01:28:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:47,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 50 states and 74 transitions. [2021-11-23 01:28:47,493 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 74 transitions. [2021-11-23 01:28:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 01:28:47,495 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:47,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 01:28:48,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:48,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 55 states and 83 transitions. [2021-11-23 01:28:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 83 transitions. [2021-11-23 01:28:48,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 01:28:48,401 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 01:28:48,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 01:28:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 01:28:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 01:28:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 01:28:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 32 states and 40 transitions. [2021-11-23 01:28:48,674 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-23 01:28:48,675 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 01:28:48,676 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 7 iterations. [2021-11-23 01:28:48,684 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-11-23 01:28:48,751 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-23 01:28:48,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 01:28:48 ImpRootNode [2021-11-23 01:28:48,755 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 01:28:48,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 01:28:48,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 01:28:48,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 01:28:48,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:28:44" (3/4) ... [2021-11-23 01:28:48,760 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 01:28:48,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-23 01:28:48,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2021-11-23 01:28:48,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-23 01:28:48,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2021-11-23 01:28:48,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-11-23 01:28:48,771 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 01:28:48,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 01:28:48,821 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 01:28:48,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 01:28:48,822 INFO L158 Benchmark]: Toolchain (without parser) took 4687.22ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 73.0MB in the beginning and 115.9MB in the end (delta: -42.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:28:48,823 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 79.3MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:28:48,824 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.12ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 82.8MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 01:28:48,824 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.89ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 81.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:28:48,825 INFO L158 Benchmark]: Boogie Preprocessor took 57.80ms. Allocated memory is still 109.1MB. Free memory was 81.2MB in the beginning and 80.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:28:48,826 INFO L158 Benchmark]: RCFGBuilder took 440.32ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 67.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 01:28:48,826 INFO L158 Benchmark]: CodeCheck took 3789.67ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 67.6MB in the beginning and 119.0MB in the end (delta: -51.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 01:28:48,827 INFO L158 Benchmark]: Witness Printer took 65.62ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 115.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 01:28:48,830 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: 3.7s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 371 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 189 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 613 IncrementalHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 183 mSDtfsCounter, 613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1332 GetRequests, 1259 SyntacticMatches, 15 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s 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, 0.0s 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 0.33ms. Allocated memory is still 109.1MB. Free memory was 79.3MB in the beginning and 79.3MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.12ms. Allocated memory is still 109.1MB. Free memory was 73.0MB in the beginning and 82.8MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.89ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 81.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.80ms. Allocated memory is still 109.1MB. Free memory was 81.2MB in the beginning and 80.2MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 440.32ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 67.6MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * CodeCheck took 3789.67ms. Allocated memory was 109.1MB in the beginning and 151.0MB in the end (delta: 41.9MB). Free memory was 67.6MB in the beginning and 119.0MB in the end (delta: -51.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 65.62ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 115.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-23 01:28:48,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f227ec10-1f66-4e47-af9a-666d13117012/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE