./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6eaec015dd6fdb220ef146938a83a65106037c982563310cbbb34d0417543f1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:05:29,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:05:29,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:05:29,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:05:29,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:05:29,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:05:29,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:05:29,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:05:29,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:05:29,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:05:29,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:05:29,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:05:29,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:05:29,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:05:29,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:05:29,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:05:29,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:05:29,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:05:29,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:05:29,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:05:29,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:05:29,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:05:29,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:05:29,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:05:29,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:05:29,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:05:29,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:05:29,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:05:29,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:05:29,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:05:29,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:05:29,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:05:29,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:05:29,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:05:29,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:05:29,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:05:29,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:05:29,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:05:29,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:05:29,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:05:29,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:05:29,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:05:29,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:05:29,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:05:29,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:05:29,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:05:29,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:05:29,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:05:29,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:05:29,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:05:29,692 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:05:29,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:05:29,692 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:05:29,692 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:05:29,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:05:29,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:05:29,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:05:29,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:05:29,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:05:29,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:05:29,694 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:05:29,694 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:05:29,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:05:29,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:05:29,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:05:29,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:05:29,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:05:29,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:05:29,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:05:29,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:05:29,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:05:29,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:05:29,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:05:29,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:05:29,696 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:05:29,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:05:29,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:05:29,697 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_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6eaec015dd6fdb220ef146938a83a65106037c982563310cbbb34d0417543f1 [2022-11-20 12:05:29,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:05:30,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:05:30,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:05:30,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:05:30,007 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:05:30,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-1.i [2022-11-20 12:05:33,099 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:05:33,373 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:05:33,373 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/sv-benchmarks/c/list-ext3-properties/dll_nondet_free_order-1.i [2022-11-20 12:05:33,383 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/data/51b9513b1/68308cb0794642e9b11f35648cb21616/FLAGd1de07cf5 [2022-11-20 12:05:33,397 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/data/51b9513b1/68308cb0794642e9b11f35648cb21616 [2022-11-20 12:05:33,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:05:33,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:05:33,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:05:33,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:05:33,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:05:33,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dbac039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33, skipping insertion in model container [2022-11-20 12:05:33,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:05:33,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:05:33,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:05:33,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:05:33,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:05:33,899 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:05:33,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33 WrapperNode [2022-11-20 12:05:33,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:05:33,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:05:33,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:05:33,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:05:33,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,927 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,948 INFO L138 Inliner]: procedures = 116, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2022-11-20 12:05:33,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:05:33,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:05:33,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:05:33,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:05:33,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:33,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:05:33,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:05:33,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:05:33,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:05:33,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (1/1) ... [2022-11-20 12:05:34,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:05:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:34,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:05:34,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:05:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2022-11-20 12:05:34,068 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2022-11-20 12:05:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:05:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:05:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:05:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:05:34,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:05:34,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:05:34,177 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:05:34,180 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:05:34,229 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2022-11-20 12:05:34,433 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:05:34,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:05:34,445 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:05:34,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:34 BoogieIcfgContainer [2022-11-20 12:05:34,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:05:34,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:05:34,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:05:34,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:05:34,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:05:33" (1/3) ... [2022-11-20 12:05:34,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6599f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:34, skipping insertion in model container [2022-11-20 12:05:34,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:05:33" (2/3) ... [2022-11-20 12:05:34,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6599f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:05:34, skipping insertion in model container [2022-11-20 12:05:34,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:34" (3/3) ... [2022-11-20 12:05:34,470 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_nondet_free_order-1.i [2022-11-20 12:05:34,489 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:05:34,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:05:34,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:05:34,560 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1dff2b0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:05:34,560 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:05:34,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:05:34,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:34,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:34,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:05:34,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:34,584 INFO L85 PathProgramCache]: Analyzing trace with hash 620997708, now seen corresponding path program 1 times [2022-11-20 12:05:34,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:34,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942480696] [2022-11-20 12:05:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:34,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:34,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942480696] [2022-11-20 12:05:34,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942480696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:34,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:34,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:05:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172294692] [2022-11-20 12:05:34,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:34,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:34,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:35,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:35,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:05:35,027 INFO L87 Difference]: Start difference. First operand has 26 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:35,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:35,090 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2022-11-20 12:05:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:05:35,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 12:05:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:35,099 INFO L225 Difference]: With dead ends: 45 [2022-11-20 12:05:35,100 INFO L226 Difference]: Without dead ends: 16 [2022-11-20 12:05:35,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:35,106 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:35,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 80 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:35,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-20 12:05:35,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-20 12:05:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:35,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-11-20 12:05:35,140 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2022-11-20 12:05:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:35,140 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-11-20 12:05:35,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:35,141 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-11-20 12:05:35,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:05:35,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:35,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:35,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:05:35,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:05:35,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1949063298, now seen corresponding path program 1 times [2022-11-20 12:05:35,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:35,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768965569] [2022-11-20 12:05:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:35,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:35,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768965569] [2022-11-20 12:05:35,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768965569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:05:35,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993925759] [2022-11-20 12:05:35,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:35,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:35,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:05:35,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:05:35,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:05:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:35,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:05:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:05:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:05:35,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:05:35,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993925759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:35,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:05:35,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:05:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923231306] [2022-11-20 12:05:35,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:05:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:05:35,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:05:35,679 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:35,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:35,723 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-20 12:05:35,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:05:35,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 12:05:35,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:35,725 INFO L225 Difference]: With dead ends: 16 [2022-11-20 12:05:35,725 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 12:05:35,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:05:35,727 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:35,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:35,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 12:05:35,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 12:05:35,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 12:05:35,731 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-11-20 12:05:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:35,731 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 12:05:35,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 12:05:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:05:35,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:05:35,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 12:05:35,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:05:35,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:05:35,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 12:05:35,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:05:35,939 INFO L85 PathProgramCache]: Analyzing trace with hash -291420028, now seen corresponding path program 1 times [2022-11-20 12:05:35,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:05:35,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741882994] [2022-11-20 12:05:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:05:35,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:05:35,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:05:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:05:36,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:05:36,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741882994] [2022-11-20 12:05:36,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741882994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:05:36,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:05:36,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:05:36,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044109848] [2022-11-20 12:05:36,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:05:36,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:05:36,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:05:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:05:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:05:36,059 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:05:36,084 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-20 12:05:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:05:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 12:05:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:05:36,086 INFO L225 Difference]: With dead ends: 15 [2022-11-20 12:05:36,086 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:05:36,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:05:36,090 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:05:36,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:05:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:05:36,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:05:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:05:36,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-20 12:05:36,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:05:36,094 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:05:36,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:05:36,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:05:36,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:05:36,097 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-20 12:05:36,098 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-20 12:05:36,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:05:36,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 12:05:36,126 INFO L902 garLoopResultBuilder]: At program point L561(line 561) the Hoare annotation is: true [2022-11-20 12:05:36,126 INFO L902 garLoopResultBuilder]: At program point myexitENTRY(lines 560 562) the Hoare annotation is: true [2022-11-20 12:05:36,127 INFO L899 garLoopResultBuilder]: For program point myexitEXIT(lines 560 562) no Hoare annotation was computed. [2022-11-20 12:05:36,127 INFO L899 garLoopResultBuilder]: For program point L597(lines 597 615) no Hoare annotation was computed. [2022-11-20 12:05:36,127 INFO L902 garLoopResultBuilder]: At program point L622(lines 617 623) the Hoare annotation is: true [2022-11-20 12:05:36,128 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 12:05:36,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 579) no Hoare annotation was computed. [2022-11-20 12:05:36,129 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 12:05:36,129 INFO L899 garLoopResultBuilder]: For program point L573(lines 573 575) no Hoare annotation was computed. [2022-11-20 12:05:36,129 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 12:05:36,131 INFO L899 garLoopResultBuilder]: For program point L573-1(lines 573 575) no Hoare annotation was computed. [2022-11-20 12:05:36,131 INFO L899 garLoopResultBuilder]: For program point L565(lines 565 567) no Hoare annotation was computed. [2022-11-20 12:05:36,131 INFO L899 garLoopResultBuilder]: For program point L565-1(lines 565 567) no Hoare annotation was computed. [2022-11-20 12:05:36,131 INFO L899 garLoopResultBuilder]: For program point L590(lines 590 596) no Hoare annotation was computed. [2022-11-20 12:05:36,131 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 579) no Hoare annotation was computed. [2022-11-20 12:05:36,132 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 12:05:36,132 INFO L902 garLoopResultBuilder]: At program point L574(line 574) the Hoare annotation is: true [2022-11-20 12:05:36,132 INFO L899 garLoopResultBuilder]: For program point L599(lines 599 605) no Hoare annotation was computed. [2022-11-20 12:05:36,132 INFO L895 garLoopResultBuilder]: At program point L566(line 566) the Hoare annotation is: (= 3 |ULTIMATE.start_dll_circular_create_~len#1|) [2022-11-20 12:05:36,132 INFO L902 garLoopResultBuilder]: At program point L583(lines 563 584) the Hoare annotation is: true [2022-11-20 12:05:36,133 INFO L899 garLoopResultBuilder]: For program point L579(line 579) no Hoare annotation was computed. [2022-11-20 12:05:36,135 INFO L899 garLoopResultBuilder]: For program point L579-1(line 579) no Hoare annotation was computed. [2022-11-20 12:05:36,136 INFO L899 garLoopResultBuilder]: For program point L608(lines 608 614) no Hoare annotation was computed. [2022-11-20 12:05:36,138 INFO L899 garLoopResultBuilder]: For program point L608-2(lines 588 615) no Hoare annotation was computed. [2022-11-20 12:05:36,139 INFO L895 garLoopResultBuilder]: At program point L571-2(lines 571 580) the Hoare annotation is: (or (<= |ULTIMATE.start_dll_circular_create_~len#1| 2) (= 3 |ULTIMATE.start_dll_circular_create_~len#1|)) [2022-11-20 12:05:36,139 INFO L899 garLoopResultBuilder]: For program point L571-3(lines 571 580) no Hoare annotation was computed. [2022-11-20 12:05:36,142 INFO L899 garLoopResultBuilder]: For program point L588(lines 588 615) no Hoare annotation was computed. [2022-11-20 12:05:36,146 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 12:05:36,150 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:05:36,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:05:36 BoogieIcfgContainer [2022-11-20 12:05:36,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:05:36,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:05:36,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:05:36,163 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:05:36,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:05:34" (3/4) ... [2022-11-20 12:05:36,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:05:36,174 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure myexit [2022-11-20 12:05:36,180 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-20 12:05:36,180 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:05:36,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:05:36,181 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:05:36,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:05:36,234 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:05:36,234 INFO L158 Benchmark]: Toolchain (without parser) took 2832.70ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 73.0MB in the end (delta: 37.9MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2022-11-20 12:05:36,235 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:05:36,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.72ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 94.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 12:05:36,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.92ms. Allocated memory is still 148.9MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:05:36,236 INFO L158 Benchmark]: Boogie Preprocessor took 40.10ms. Allocated memory is still 148.9MB. Free memory was 92.6MB in the beginning and 91.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:05:36,236 INFO L158 Benchmark]: RCFGBuilder took 469.62ms. Allocated memory is still 148.9MB. Free memory was 91.1MB in the beginning and 77.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 12:05:36,236 INFO L158 Benchmark]: TraceAbstraction took 1699.85ms. Allocated memory is still 148.9MB. Free memory was 76.8MB in the beginning and 76.4MB in the end (delta: 429.9kB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2022-11-20 12:05:36,237 INFO L158 Benchmark]: Witness Printer took 70.88ms. Allocated memory is still 148.9MB. Free memory was 76.4MB in the beginning and 73.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 12:05:36,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 90.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 497.72ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 94.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.92ms. Allocated memory is still 148.9MB. Free memory was 94.2MB in the beginning and 92.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.10ms. Allocated memory is still 148.9MB. Free memory was 92.6MB in the beginning and 91.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 469.62ms. Allocated memory is still 148.9MB. Free memory was 91.1MB in the beginning and 77.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1699.85ms. Allocated memory is still 148.9MB. Free memory was 76.8MB in the beginning and 76.4MB in the end (delta: 429.9kB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Witness Printer took 70.88ms. Allocated memory is still 148.9MB. Free memory was 76.4MB in the beginning and 73.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 579]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 579]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 40 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 15 HoareAnnotationTreeSize, 11 FomulaSimplifications, 7 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 108 SizeOfPredicates, 4 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 9/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 563]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 617]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 571]: Loop Invariant Derived loop invariant: len <= 2 || 3 == len - InvariantResult [Line: 561]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 12:05:36,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f892d1fa-4546-49a7-9284-bb0d1038d934/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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