./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/config/KojakReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI --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 cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 03:17:39,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 03:17:39,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 03:17:39,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 03:17:39,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 03:17:39,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 03:17:39,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 03:17:39,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 03:17:39,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 03:17:39,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 03:17:39,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 03:17:39,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 03:17:39,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 03:17:39,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 03:17:39,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 03:17:39,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 03:17:39,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 03:17:39,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 03:17:39,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 03:17:39,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 03:17:39,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 03:17:39,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 03:17:39,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 03:17:39,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 03:17:39,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 03:17:39,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 03:17:39,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 03:17:39,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 03:17:39,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 03:17:39,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 03:17:39,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 03:17:39,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 03:17:39,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 03:17:39,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 03:17:39,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 03:17:39,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 03:17:39,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 03:17:39,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 03:17:39,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 03:17:39,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 03:17:39,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 03:17:39,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-10-29 03:17:39,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 03:17:39,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 03:17:39,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 03:17:39,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-10-29 03:17:39,803 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 03:17:39,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 03:17:39,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 03:17:39,804 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 03:17:39,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 03:17:39,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 03:17:39,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 03:17:39,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 03:17:39,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 03:17:39,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 03:17:39,807 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 03:17:39,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 03:17:39,807 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 03:17:39,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 03:17:39,808 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-10-29 03:17:39,808 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-10-29 03:17:39,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 03:17:39,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:17:39,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 03:17:39,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 03:17:39,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 03:17:39,810 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-10-29 03:17:39,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 03:17:39,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 03:17:39,810 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_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab0e4c46b209be0775136f8613c1e239028ef0244464c17ac04057ecb0a0b33 [2021-10-29 03:17:40,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 03:17:40,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 03:17:40,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 03:17:40,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 03:17:40,127 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 03:17:40,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2021-10-29 03:17:40,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/data/3cf65ca07/927f882ea8a8431dae988d2056c3967a/FLAG375468d2f [2021-10-29 03:17:40,861 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 03:17:40,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2021-10-29 03:17:40,885 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/data/3cf65ca07/927f882ea8a8431dae988d2056c3967a/FLAG375468d2f [2021-10-29 03:17:41,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/data/3cf65ca07/927f882ea8a8431dae988d2056c3967a [2021-10-29 03:17:41,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 03:17:41,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 03:17:41,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 03:17:41,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 03:17:41,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 03:17:41,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2401d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41, skipping insertion in model container [2021-10-29 03:17:41,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 03:17:41,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 03:17:41,599 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_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2021-10-29 03:17:41,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:17:41,625 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 03:17:41,703 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_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i[24473,24486] [2021-10-29 03:17:41,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 03:17:41,742 INFO L208 MainTranslator]: Completed translation [2021-10-29 03:17:41,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41 WrapperNode [2021-10-29 03:17:41,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 03:17:41,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 03:17:41,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 03:17:41,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 03:17:41,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 03:17:41,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 03:17:41,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 03:17:41,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 03:17:41,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 03:17:41,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 03:17:41,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 03:17:41,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 03:17:41,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:17:41" (1/1) ... [2021-10-29 03:17:41,876 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-10-29 03:17:41,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/z3 [2021-10-29 03:17:41,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-10-29 03:17:41,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-10-29 03:17:41,946 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-10-29 03:17:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-10-29 03:17:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 03:17:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 03:17:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 03:17:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-29 03:17:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 03:17:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-29 03:17:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 03:17:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 03:17:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 03:17:41,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 03:17:42,143 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-10-29 03:17:42,547 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 03:17:42,547 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-29 03:17:42,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:17:42 BoogieIcfgContainer [2021-10-29 03:17:42,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 03:17:42,552 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-10-29 03:17:42,552 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-10-29 03:17:42,596 INFO L275 PluginConnector]: CodeCheck initialized [2021-10-29 03:17:42,596 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:17:42" (1/1) ... [2021-10-29 03:17:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 03:17:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:17:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 17 states and 24 transitions. [2021-10-29 03:17:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 24 transitions. [2021-10-29 03:17:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 03:17:42,645 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:17:42,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:17:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:17:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:17:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:17:42,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2021-10-29 03:17:42,923 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2021-10-29 03:17:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 03:17:42,924 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:17:42,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:17:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:17:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 03:17:43,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:17:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 21 states and 29 transitions. [2021-10-29 03:17:43,182 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2021-10-29 03:17:43,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 03:17:43,182 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:17:43,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:17:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:17:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-29 03:17:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:17:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 22 states and 31 transitions. [2021-10-29 03:17:43,794 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions. [2021-10-29 03:17:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 03:17:43,795 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2021-10-29 03:17:43,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 03:17:43,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 03:17:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-29 03:17:44,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-10-29 03:17:44,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 18 states and 25 transitions. [2021-10-29 03:17:44,002 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions. [2021-10-29 03:17:44,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 03:17:44,003 WARN L424 CodeCheckObserver]: This Program is SAFE, Check terminated with 5 iterations. [2021-10-29 03:17:44,013 INFO L759 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-10-29 03:17:44,064 INFO L565 CodeCheckObserver]: Invariant with dag size 8 [2021-10-29 03:17:44,074 INFO L565 CodeCheckObserver]: Invariant with dag size 3 [2021-10-29 03:17:44,075 INFO L565 CodeCheckObserver]: Invariant with dag size 3 [2021-10-29 03:17:44,076 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-29 03:17:44,076 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-29 03:17:44,076 INFO L565 CodeCheckObserver]: Invariant with dag size 1 [2021-10-29 03:17:44,076 INFO L565 CodeCheckObserver]: Invariant with dag size 3 [2021-10-29 03:17:44,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 29.10 03:17:44 ImpRootNode [2021-10-29 03:17:44,078 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-10-29 03:17:44,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 03:17:44,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 03:17:44,080 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 03:17:44,080 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:17:42" (3/4) ... [2021-10-29 03:17:44,085 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 03:17:44,108 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2021-10-29 03:17:44,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-29 03:17:44,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-29 03:17:44,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 03:17:44,135 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 03:17:44,203 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/witness.graphml [2021-10-29 03:17:44,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 03:17:44,206 INFO L168 Benchmark]: Toolchain (without parser) took 3078.53 ms. Allocated memory is still 104.9 MB. Free memory was 77.0 MB in the beginning and 78.6 MB in the end (delta: -1.6 MB). Peak memory consumption was 44.7 MB. Max. memory is 16.1 GB. [2021-10-29 03:17:44,210 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 03:17:44,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 613.83 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 60.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 03:17:44,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.57 ms. Allocated memory is still 104.9 MB. Free memory was 60.2 MB in the beginning and 58.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:17:44,212 INFO L168 Benchmark]: Boogie Preprocessor took 34.67 ms. Allocated memory is still 104.9 MB. Free memory was 58.2 MB in the beginning and 56.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:17:44,213 INFO L168 Benchmark]: RCFGBuilder took 683.23 ms. Allocated memory is still 104.9 MB. Free memory was 56.6 MB in the beginning and 38.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 03:17:44,214 INFO L168 Benchmark]: CodeCheck took 1527.11 ms. Allocated memory is still 104.9 MB. Free memory was 38.1 MB in the beginning and 36.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2021-10-29 03:17:44,215 INFO L168 Benchmark]: Witness Printer took 124.67 ms. Allocated memory is still 104.9 MB. Free memory was 36.7 MB in the beginning and 78.6 MB in the end (delta: -41.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2021-10-29 03:17:44,218 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, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 88 SDslu, 54 SDs, 0 SdLazy, 302 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 11/12 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: 641]: 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: 633]: Loop Invariant Derived loop invariant: 2 == len && len <= i + 1 - InvariantResult [Line: 629]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 2 == len - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 604]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 == len * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory is still 48.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 613.83 ms. Allocated memory is still 104.9 MB. Free memory was 76.8 MB in the beginning and 60.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.57 ms. Allocated memory is still 104.9 MB. Free memory was 60.2 MB in the beginning and 58.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.67 ms. Allocated memory is still 104.9 MB. Free memory was 58.2 MB in the beginning and 56.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 683.23 ms. Allocated memory is still 104.9 MB. Free memory was 56.6 MB in the beginning and 38.3 MB in the end (delta: 18.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * CodeCheck took 1527.11 ms. Allocated memory is still 104.9 MB. Free memory was 38.1 MB in the beginning and 36.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. * Witness Printer took 124.67 ms. Allocated memory is still 104.9 MB. Free memory was 36.7 MB in the beginning and 78.6 MB in the end (delta: -41.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be correct! [2021-10-29 03:17:44,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ff2b0d6-3fe7-4397-9316-dd29544d92c5/bin/ukojak-Rh5K9KB4LI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...