./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8 --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 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb --- 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-2329fc7 [2022-12-13 19:31:13,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:31:13,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:31:13,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:31:13,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:31:13,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:31:13,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:31:13,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:31:13,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:31:13,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:31:13,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:31:13,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:31:13,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:31:13,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:31:13,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:31:13,814 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:31:13,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:31:13,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:31:13,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:31:13,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:31:13,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:31:13,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:31:13,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:31:13,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:31:13,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:31:13,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:31:13,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:31:13,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:31:13,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:31:13,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:31:13,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:31:13,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:31:13,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:31:13,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:31:13,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:31:13,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:31:13,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:31:13,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:31:13,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:31:13,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:31:13,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:31:13,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:31:13,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:31:13,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:31:13,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:31:13,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:31:13,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:31:13,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:31:13,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:31:13,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:31:13,856 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:31:13,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:31:13,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:31:13,857 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:31:13,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:31:13,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:31:13,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:31:13,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:31:13,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:31:13,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:31:13,858 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:31:13,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:31:13,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:31:13,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:31:13,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:31:13,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:31:13,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:31:13,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:31:13,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:31:13,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:31:13,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:31:13,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:31:13,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:31:13,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:31:13,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:31:13,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:31:13,860 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:31:13,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:31:13,861 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:31:13,861 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12bbf3623faa1d8cb0ae406b9406d293839854c20d2fb62622ec841c419248fb [2022-12-13 19:31:14,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:31:14,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:31:14,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:31:14,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:31:14,069 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:31:14,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-12-13 19:31:16,685 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:31:16,880 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:31:16,880 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/sv-benchmarks/c/goblint-regression/09-regions_19-nested_nr.i [2022-12-13 19:31:16,891 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/data/ef37b34b8/f6e04f874daa44b2bddbe9ae745602ff/FLAG0a9885e47 [2022-12-13 19:31:16,901 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/data/ef37b34b8/f6e04f874daa44b2bddbe9ae745602ff [2022-12-13 19:31:16,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:31:16,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:31:16,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:31:16,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:31:16,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:31:16,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:31:16" (1/1) ... [2022-12-13 19:31:16,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e34e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:16, skipping insertion in model container [2022-12-13 19:31:16,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:31:16" (1/1) ... [2022-12-13 19:31:16,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:31:16,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:31:17,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:31:17,348 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:31:17,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:31:17,427 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:31:17,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17 WrapperNode [2022-12-13 19:31:17,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:31:17,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:31:17,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:31:17,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:31:17,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,484 INFO L138 Inliner]: procedures = 370, calls = 29, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 116 [2022-12-13 19:31:17,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:31:17,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:31:17,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:31:17,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:31:17,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:31:17,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:31:17,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:31:17,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:31:17,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (1/1) ... [2022-12-13 19:31:17,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:31:17,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:31:17,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:31:17,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:31:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:31:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:31:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:31:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:31:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:31:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:31:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:31:17,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:31:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:31:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 19:31:17,588 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 19:31:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:31:17,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:31:17,590 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:31:17,710 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:31:17,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:31:17,929 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:31:17,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:31:17,937 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 19:31:17,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:31:17 BoogieIcfgContainer [2022-12-13 19:31:17,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:31:17,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:31:17,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:31:17,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:31:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:31:16" (1/3) ... [2022-12-13 19:31:17,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303371e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:31:17, skipping insertion in model container [2022-12-13 19:31:17,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:31:17" (2/3) ... [2022-12-13 19:31:17,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303371e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:31:17, skipping insertion in model container [2022-12-13 19:31:17,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:31:17" (3/3) ... [2022-12-13 19:31:17,946 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_19-nested_nr.i [2022-12-13 19:31:17,954 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:31:17,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:31:17,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:31:17,962 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:31:18,005 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:31:18,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 147 transitions, 299 flow [2022-12-13 19:31:18,066 INFO L130 PetriNetUnfolder]: 4/146 cut-off events. [2022-12-13 19:31:18,067 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:31:18,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 146 events. 4/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2022-12-13 19:31:18,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 147 transitions, 299 flow [2022-12-13 19:31:18,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 22 places, 22 transitions, 44 flow [2022-12-13 19:31:18,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:31:18,083 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 22 places, 22 transitions, 44 flow [2022-12-13 19:31:18,085 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 22 places, 22 transitions, 44 flow [2022-12-13 19:31:18,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 22 transitions, 44 flow [2022-12-13 19:31:18,089 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2022-12-13 19:31:18,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:31:18,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 22 events. 1/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 19:31:18,089 INFO L119 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-13 19:31:18,535 INFO L134 LiptonReduction]: Checked pairs total: 0 [2022-12-13 19:31:18,535 INFO L136 LiptonReduction]: Total number of compositions: 22 [2022-12-13 19:31:18,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:31:18,556 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;@7697caee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:31:18,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-13 19:31:18,558 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 19:31:18,558 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:31:18,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:18,559 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:31:18,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 19:31:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 13196, now seen corresponding path program 1 times [2022-12-13 19:31:18,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:18,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790622799] [2022-12-13 19:31:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:18,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:18,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:18,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790622799] [2022-12-13 19:31:18,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790622799] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:18,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:18,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:31:18,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199308392] [2022-12-13 19:31:18,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:18,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:18,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:18,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:18,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:18,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-12-13 19:31:18,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 4 places, 4 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2022-12-13 19:31:18,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:18,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-12-13 19:31:18,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:18,819 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 19:31:18,819 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:31:18,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8 conditions, 3 events. 1/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/2 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-13 19:31:18,820 INFO L137 encePairwiseOnDemand]: 167/169 looper letters, 2 selfloop transitions, 1 changer transitions 0/3 dead transitions. [2022-12-13 19:31:18,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 3 transitions, 12 flow [2022-12-13 19:31:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2022-12-13 19:31:18,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8303747534516766 [2022-12-13 19:31:18,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2022-12-13 19:31:18,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2022-12-13 19:31:18,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:18,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2022-12-13 19:31:18,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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) [2022-12-13 19:31:18,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-12-13 19:31:18,849 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-12-13 19:31:18,851 INFO L175 Difference]: Start difference. First operand has 4 places, 4 transitions, 8 flow. Second operand 3 states and 421 transitions. [2022-12-13 19:31:18,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 3 transitions, 12 flow [2022-12-13 19:31:18,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 3 transitions, 12 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:31:18,854 INFO L231 Difference]: Finished difference. Result has 5 places, 3 transitions, 8 flow [2022-12-13 19:31:18,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=6, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=8, PETRI_PLACES=5, PETRI_TRANSITIONS=3} [2022-12-13 19:31:18,858 INFO L288 CegarLoopForPetriNet]: 4 programPoint places, 1 predicate places. [2022-12-13 19:31:18,858 INFO L495 AbstractCegarLoop]: Abstraction has has 5 places, 3 transitions, 8 flow [2022-12-13 19:31:18,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2022-12-13 19:31:18,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:18,858 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 19:31:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:31:18,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 19:31:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash 13211, now seen corresponding path program 1 times [2022-12-13 19:31:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:18,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648045604] [2022-12-13 19:31:18,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:18,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:18,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648045604] [2022-12-13 19:31:18,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648045604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:18,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:18,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:31:18,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487461438] [2022-12-13 19:31:18,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:18,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:18,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:18,919 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 169 [2022-12-13 19:31:18,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 3 transitions, 8 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2022-12-13 19:31:18,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:18,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 169 [2022-12-13 19:31:18,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:18,928 INFO L130 PetriNetUnfolder]: 1/4 cut-off events. [2022-12-13 19:31:18,928 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:31:18,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 4 events. 1/4 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 6. Up to 4 conditions per place. [2022-12-13 19:31:18,928 INFO L137 encePairwiseOnDemand]: 166/169 looper letters, 2 selfloop transitions, 2 changer transitions 0/4 dead transitions. [2022-12-13 19:31:18,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 7 places, 4 transitions, 18 flow [2022-12-13 19:31:18,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:18,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:18,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-12-13 19:31:18,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8323471400394478 [2022-12-13 19:31:18,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-12-13 19:31:18,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-12-13 19:31:18,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:18,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-12-13 19:31:18,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2022-12-13 19:31:18,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-12-13 19:31:18,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-12-13 19:31:18,935 INFO L175 Difference]: Start difference. First operand has 5 places, 3 transitions, 8 flow. Second operand 3 states and 422 transitions. [2022-12-13 19:31:18,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 7 places, 4 transitions, 18 flow [2022-12-13 19:31:18,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6 places, 4 transitions, 17 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:18,936 INFO L231 Difference]: Finished difference. Result has 7 places, 4 transitions, 19 flow [2022-12-13 19:31:18,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=7, PETRI_DIFFERENCE_MINUEND_PLACES=4, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=19, PETRI_PLACES=7, PETRI_TRANSITIONS=4} [2022-12-13 19:31:18,937 INFO L288 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2022-12-13 19:31:18,937 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 4 transitions, 19 flow [2022-12-13 19:31:18,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2022-12-13 19:31:18,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:31:18,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 19:31:18,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:31:18,938 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-13 19:31:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:31:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 410073, now seen corresponding path program 1 times [2022-12-13 19:31:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:31:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084921937] [2022-12-13 19:31:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:31:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:31:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:31:18,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:31:18,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:31:18,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084921937] [2022-12-13 19:31:18,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084921937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:31:18,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:31:18,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:31:18,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030602031] [2022-12-13 19:31:18,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:31:18,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:31:18,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:31:18,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:31:18,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:31:18,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 169 [2022-12-13 19:31:18,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 7 places, 4 transitions, 19 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2022-12-13 19:31:19,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:31:19,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 169 [2022-12-13 19:31:19,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:31:19,006 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2022-12-13 19:31:19,006 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:31:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 3 events. 1/3 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/3 useless extension candidates. Maximal degree in co-relation 7. Up to 3 conditions per place. [2022-12-13 19:31:19,007 INFO L137 encePairwiseOnDemand]: 167/169 looper letters, 0 selfloop transitions, 0 changer transitions 3/3 dead transitions. [2022-12-13 19:31:19,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 8 places, 3 transitions, 21 flow [2022-12-13 19:31:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:31:19,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:31:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2022-12-13 19:31:19,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8224852071005917 [2022-12-13 19:31:19,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2022-12-13 19:31:19,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2022-12-13 19:31:19,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:31:19,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2022-12-13 19:31:19,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2022-12-13 19:31:19,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-12-13 19:31:19,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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) [2022-12-13 19:31:19,011 INFO L175 Difference]: Start difference. First operand has 7 places, 4 transitions, 19 flow. Second operand 3 states and 417 transitions. [2022-12-13 19:31:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 8 places, 3 transitions, 21 flow [2022-12-13 19:31:19,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 7 places, 3 transitions, 17 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:31:19,011 INFO L231 Difference]: Finished difference. Result has 7 places, 0 transitions, 0 flow [2022-12-13 19:31:19,011 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=169, PETRI_DIFFERENCE_MINUEND_FLOW=11, PETRI_DIFFERENCE_MINUEND_PLACES=5, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=7, PETRI_TRANSITIONS=0} [2022-12-13 19:31:19,012 INFO L288 CegarLoopForPetriNet]: 4 programPoint places, 3 predicate places. [2022-12-13 19:31:19,012 INFO L495 AbstractCegarLoop]: Abstraction has has 7 places, 0 transitions, 0 flow [2022-12-13 19:31:19,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2022-12-13 19:31:19,014 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 3 remaining) [2022-12-13 19:31:19,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 3 remaining) [2022-12-13 19:31:19,015 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-13 19:31:19,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:31:19,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 19:31:19,019 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:31:19,019 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:31:19,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:31:19 BasicIcfg [2022-12-13 19:31:19,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:31:19,023 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:31:19,023 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:31:19,024 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:31:19,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:31:17" (3/4) ... [2022-12-13 19:31:19,027 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 19:31:19,033 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 19:31:19,037 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-13 19:31:19,037 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 19:31:19,037 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 19:31:19,068 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:31:19,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:31:19,069 INFO L158 Benchmark]: Toolchain (without parser) took 2164.57ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 91.0MB in the beginning and 60.6MB in the end (delta: 30.5MB). Peak memory consumption was 58.8MB. Max. memory is 16.1GB. [2022-12-13 19:31:19,069 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 125.8MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:31:19,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.58ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 51.8MB in the end (delta: 38.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-12-13 19:31:19,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.53ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 51.8MB in the beginning and 119.1MB in the end (delta: -67.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-12-13 19:31:19,070 INFO L158 Benchmark]: Boogie Preprocessor took 36.36ms. Allocated memory is still 151.0MB. Free memory was 119.1MB in the beginning and 120.7MB in the end (delta: -1.7MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-12-13 19:31:19,071 INFO L158 Benchmark]: RCFGBuilder took 416.67ms. Allocated memory is still 151.0MB. Free memory was 120.7MB in the beginning and 101.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 19:31:19,071 INFO L158 Benchmark]: TraceAbstraction took 1082.04ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 63.7MB in the end (delta: 36.6MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-12-13 19:31:19,071 INFO L158 Benchmark]: Witness Printer took 45.11ms. Allocated memory is still 151.0MB. Free memory was 63.7MB in the beginning and 60.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:31:19,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 125.8MB. Free memory is still 100.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.58ms. Allocated memory is still 125.8MB. Free memory was 90.6MB in the beginning and 51.8MB in the end (delta: 38.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.53ms. Allocated memory was 125.8MB in the beginning and 151.0MB in the end (delta: 25.2MB). Free memory was 51.8MB in the beginning and 119.1MB in the end (delta: -67.3MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.36ms. Allocated memory is still 151.0MB. Free memory was 119.1MB in the beginning and 120.7MB in the end (delta: -1.7MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * RCFGBuilder took 416.67ms. Allocated memory is still 151.0MB. Free memory was 120.7MB in the beginning and 101.1MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1082.04ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 63.7MB in the end (delta: 36.6MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * Witness Printer took 45.11ms. Allocated memory is still 151.0MB. Free memory was 63.7MB in the beginning and 60.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 22 PlacesBefore, 4 PlacesAfterwards, 22 TransitionsBefore, 4 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 22 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1256]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 189 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 2 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, 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: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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 RESULT: Ultimate proved your program to be correct! [2022-12-13 19:31:19,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7101c5d-516f-4c30-b7fa-ab5063bf65c5/bin/uautomizer-uyxdKDjOR8/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