./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1b66927274f90f2d29b42a27dd6906879a79472ec3d29ac0ef54d445fc2204b --- 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-4e7fbc6 [2022-11-23 01:43:09,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:43:09,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:43:09,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:43:09,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:43:09,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:43:09,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:43:09,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:43:09,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:43:09,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:43:09,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:43:09,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:43:09,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:43:09,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:43:09,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:43:09,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:43:09,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:43:09,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:43:09,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:43:09,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:43:09,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:43:09,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:43:09,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:43:09,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:43:09,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:43:09,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:43:09,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:43:09,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:43:09,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:43:09,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:43:09,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:43:09,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:43:09,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:43:09,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:43:09,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:43:09,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:43:09,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:43:09,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:43:09,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:43:09,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:43:09,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:43:09,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:43:09,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:43:10,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:43:10,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:43:10,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:43:10,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:43:10,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:43:10,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:43:10,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:43:10,009 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:43:10,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:43:10,010 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:43:10,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:43:10,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:43:10,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:43:10,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:43:10,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:43:10,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:43:10,011 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:43:10,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:43:10,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:43:10,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:43:10,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:43:10,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:43:10,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:43:10,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:43:10,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:43:10,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:43:10,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:43:10,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:43:10,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:43:10,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:43:10,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:43:10,014 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:43:10,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:43:10,015 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_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1b66927274f90f2d29b42a27dd6906879a79472ec3d29ac0ef54d445fc2204b [2022-11-23 01:43:10,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:43:10,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:43:10,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:43:10,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:43:10,284 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:43:10,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2022-11-23 01:43:13,134 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:43:13,407 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:43:13,408 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i [2022-11-23 01:43:13,420 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/data/8e37348e5/db361cb2f39146caa695befa696af1c3/FLAG3daaa8f04 [2022-11-23 01:43:13,434 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/data/8e37348e5/db361cb2f39146caa695befa696af1c3 [2022-11-23 01:43:13,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:43:13,438 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:43:13,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:43:13,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:43:13,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:43:13,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3cd194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13, skipping insertion in model container [2022-11-23 01:43:13,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:43:13,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:43:13,660 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i[1091,1104] [2022-11-23 01:43:13,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:43:13,818 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:43:13,829 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/sv-benchmarks/c/goblint-regression/13-privatized_42-traces-ex-mini_true.i[1091,1104] [2022-11-23 01:43:13,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:43:13,891 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:43:13,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13 WrapperNode [2022-11-23 01:43:13,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:43:13,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:43:13,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:43:13,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:43:13,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,931 INFO L138 Inliner]: procedures = 162, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2022-11-23 01:43:13,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:43:13,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:43:13,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:43:13,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:43:13,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,952 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:43:13,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:43:13,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:43:13,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:43:13,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (1/1) ... [2022-11-23 01:43:13,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:43:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:43:13,987 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:43:14,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:43:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 01:43:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-23 01:43:14,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-23 01:43:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-23 01:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:43:14,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:43:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:43:14,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:43:14,039 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 01:43:14,162 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:43:14,164 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:43:14,306 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:43:14,313 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:43:14,313 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 01:43:14,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:14 BoogieIcfgContainer [2022-11-23 01:43:14,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:43:14,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:43:14,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:43:14,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:43:14,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:43:13" (1/3) ... [2022-11-23 01:43:14,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:14, skipping insertion in model container [2022-11-23 01:43:14,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:13" (2/3) ... [2022-11-23 01:43:14,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970541 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:14, skipping insertion in model container [2022-11-23 01:43:14,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:14" (3/3) ... [2022-11-23 01:43:14,346 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_42-traces-ex-mini_true.i [2022-11-23 01:43:14,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 01:43:14,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:43:14,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:43:14,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 01:43:14,490 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 01:43:14,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 161 flow [2022-11-23 01:43:14,585 INFO L130 PetriNetUnfolder]: 1/77 cut-off events. [2022-11-23 01:43:14,586 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:43:14,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 1/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-11-23 01:43:14,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 78 transitions, 161 flow [2022-11-23 01:43:14,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 64 transitions, 131 flow [2022-11-23 01:43:14,602 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 01:43:14,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 68 places, 64 transitions, 131 flow [2022-11-23 01:43:14,620 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 68 places, 64 transitions, 131 flow [2022-11-23 01:43:14,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 64 transitions, 131 flow [2022-11-23 01:43:14,651 INFO L130 PetriNetUnfolder]: 0/64 cut-off events. [2022-11-23 01:43:14,651 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:43:14,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 0/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-11-23 01:43:14,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 308 [2022-11-23 01:43:18,478 INFO L134 LiptonReduction]: Checked pairs total: 525 [2022-11-23 01:43:18,478 INFO L136 LiptonReduction]: Total number of compositions: 55 [2022-11-23 01:43:18,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:43:18,502 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;@2147134f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:43:18,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 01:43:18,506 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-11-23 01:43:18,507 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:43:18,507 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:43:18,507 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 01:43:18,508 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:43:18,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894757, now seen corresponding path program 1 times [2022-11-23 01:43:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:18,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392521682] [2022-11-23 01:43:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:43:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:18,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392521682] [2022-11-23 01:43:18,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392521682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:18,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:18,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 01:43:18,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841635955] [2022-11-23 01:43:18,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:43:18,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:43:18,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:43:18,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 133 [2022-11-23 01:43:18,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 21 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-11-23 01:43:18,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:43:18,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 133 [2022-11-23 01:43:18,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:43:18,973 INFO L130 PetriNetUnfolder]: 6/25 cut-off events. [2022-11-23 01:43:18,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 01:43:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 25 events. 6/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 3 based on Foata normal form. 2/27 useless extension candidates. Maximal degree in co-relation 42. Up to 13 conditions per place. [2022-11-23 01:43:18,975 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 8 selfloop transitions, 3 changer transitions 0/12 dead transitions. [2022-11-23 01:43:18,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 12 transitions, 49 flow [2022-11-23 01:43:18,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:43:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:43:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2022-11-23 01:43:18,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2022-11-23 01:43:18,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2022-11-23 01:43:18,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2022-11-23 01:43:18,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:43:18,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2022-11-23 01:43:18,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-11-23 01:43:19,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2022-11-23 01:43:19,000 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 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) [2022-11-23 01:43:19,002 INFO L175 Difference]: Start difference. First operand has 13 places, 9 transitions, 21 flow. Second operand 3 states and 228 transitions. [2022-11-23 01:43:19,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 12 transitions, 49 flow [2022-11-23 01:43:19,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:43:19,006 INFO L231 Difference]: Finished difference. Result has 15 places, 9 transitions, 31 flow [2022-11-23 01:43:19,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2022-11-23 01:43:19,011 INFO L288 CegarLoopForPetriNet]: 13 programPoint places, 2 predicate places. [2022-11-23 01:43:19,011 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 31 flow [2022-11-23 01:43:19,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-11-23 01:43:19,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:43:19,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:19,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:43:19,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:43:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:19,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1210966237, now seen corresponding path program 1 times [2022-11-23 01:43:19,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:19,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813426761] [2022-11-23 01:43:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:19,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:43:19,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:19,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813426761] [2022-11-23 01:43:19,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813426761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:19,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:19,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:43:19,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210431014] [2022-11-23 01:43:19,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:43:19,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:43:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 01:43:19,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 133 [2022-11-23 01:43:19,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 31 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2022-11-23 01:43:19,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:43:19,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 133 [2022-11-23 01:43:19,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:43:19,349 INFO L130 PetriNetUnfolder]: 5/22 cut-off events. [2022-11-23 01:43:19,350 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-23 01:43:19,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 22 events. 5/22 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 2 based on Foata normal form. 3/25 useless extension candidates. Maximal degree in co-relation 50. Up to 13 conditions per place. [2022-11-23 01:43:19,350 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 6 selfloop transitions, 4 changer transitions 1/11 dead transitions. [2022-11-23 01:43:19,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 60 flow [2022-11-23 01:43:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:43:19,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 01:43:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2022-11-23 01:43:19,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2022-11-23 01:43:19,357 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 285 transitions. [2022-11-23 01:43:19,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 285 transitions. [2022-11-23 01:43:19,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:43:19,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 285 transitions. [2022-11-23 01:43:19,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 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) [2022-11-23 01:43:19,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 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) [2022-11-23 01:43:19,364 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 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) [2022-11-23 01:43:19,364 INFO L175 Difference]: Start difference. First operand has 15 places, 9 transitions, 31 flow. Second operand 4 states and 285 transitions. [2022-11-23 01:43:19,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 60 flow [2022-11-23 01:43:19,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 52 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 01:43:19,366 INFO L231 Difference]: Finished difference. Result has 16 places, 9 transitions, 33 flow [2022-11-23 01:43:19,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=16, PETRI_TRANSITIONS=9} [2022-11-23 01:43:19,367 INFO L288 CegarLoopForPetriNet]: 13 programPoint places, 3 predicate places. [2022-11-23 01:43:19,367 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 9 transitions, 33 flow [2022-11-23 01:43:19,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2022-11-23 01:43:19,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:43:19,368 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:43:19,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:43:19,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:43:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:43:19,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1144748974, now seen corresponding path program 1 times [2022-11-23 01:43:19,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:43:19,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759024665] [2022-11-23 01:43:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:43:19,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:43:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:43:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:43:19,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:43:19,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759024665] [2022-11-23 01:43:19,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759024665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:43:19,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:43:19,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 01:43:19,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582720644] [2022-11-23 01:43:19,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:43:19,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 01:43:19,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:43:19,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 01:43:19,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 01:43:19,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 133 [2022-11-23 01:43:19,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 9 transitions, 33 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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) [2022-11-23 01:43:19,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:43:19,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 133 [2022-11-23 01:43:19,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:43:19,671 INFO L130 PetriNetUnfolder]: 4/18 cut-off events. [2022-11-23 01:43:19,672 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 01:43:19,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 18 events. 4/18 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 22 event pairs, 1 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 41. Up to 9 conditions per place. [2022-11-23 01:43:19,672 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2022-11-23 01:43:19,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 55 flow [2022-11-23 01:43:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:43:19,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 01:43:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2022-11-23 01:43:19,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5169172932330827 [2022-11-23 01:43:19,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 275 transitions. [2022-11-23 01:43:19,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 275 transitions. [2022-11-23 01:43:19,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:43:19,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 275 transitions. [2022-11-23 01:43:19,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2022-11-23 01:43:19,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 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) [2022-11-23 01:43:19,677 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 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) [2022-11-23 01:43:19,677 INFO L175 Difference]: Start difference. First operand has 16 places, 9 transitions, 33 flow. Second operand 4 states and 275 transitions. [2022-11-23 01:43:19,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 55 flow [2022-11-23 01:43:19,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 10 transitions, 47 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-23 01:43:19,678 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2022-11-23 01:43:19,678 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2022-11-23 01:43:19,679 INFO L288 CegarLoopForPetriNet]: 13 programPoint places, 2 predicate places. [2022-11-23 01:43:19,679 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2022-11-23 01:43:19,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 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) [2022-11-23 01:43:19,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-23 01:43:19,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-11-23 01:43:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:43:19,683 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 01:43:19,686 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 01:43:19,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 01:43:19,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:43:19 BasicIcfg [2022-11-23 01:43:19,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 01:43:19,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 01:43:19,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 01:43:19,690 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 01:43:19,690 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:14" (3/4) ... [2022-11-23 01:43:19,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 01:43:19,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-23 01:43:19,702 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-23 01:43:19,702 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 01:43:19,702 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 01:43:19,703 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 01:43:19,737 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 01:43:19,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 01:43:19,737 INFO L158 Benchmark]: Toolchain (without parser) took 6299.74ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 84.3MB in the beginning and 129.5MB in the end (delta: -45.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:43:19,738 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory was 96.6MB in the beginning and 96.5MB in the end (delta: 85.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:43:19,738 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.43ms. Allocated memory is still 125.8MB. Free memory was 84.3MB in the beginning and 65.3MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 01:43:19,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.44ms. Allocated memory is still 125.8MB. Free memory was 65.3MB in the beginning and 63.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:43:19,739 INFO L158 Benchmark]: Boogie Preprocessor took 23.17ms. Allocated memory is still 125.8MB. Free memory was 63.2MB in the beginning and 61.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:43:19,739 INFO L158 Benchmark]: RCFGBuilder took 359.55ms. Allocated memory is still 125.8MB. Free memory was 61.8MB in the beginning and 48.6MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 01:43:19,740 INFO L158 Benchmark]: TraceAbstraction took 5362.62ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 47.8MB in the beginning and 131.6MB in the end (delta: -83.8MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2022-11-23 01:43:19,740 INFO L158 Benchmark]: Witness Printer took 47.08ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:43:19,742 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory was 96.6MB in the beginning and 96.5MB in the end (delta: 85.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.43ms. Allocated memory is still 125.8MB. Free memory was 84.3MB in the beginning and 65.3MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.44ms. Allocated memory is still 125.8MB. Free memory was 65.3MB in the beginning and 63.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.17ms. Allocated memory is still 125.8MB. Free memory was 63.2MB in the beginning and 61.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 359.55ms. Allocated memory is still 125.8MB. Free memory was 61.8MB in the beginning and 48.6MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5362.62ms. Allocated memory was 125.8MB in the beginning and 167.8MB in the end (delta: 41.9MB). Free memory was 47.8MB in the beginning and 131.6MB in the end (delta: -83.8MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * Witness Printer took 47.08ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 68 PlacesBefore, 13 PlacesAfterwards, 64 TransitionsBefore, 9 TransitionsAfterwards, 308 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 55 TotalNumberOfCompositions, 525 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 319, independent: 248, independent conditional: 0, independent unconditional: 248, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 218, independent: 195, independent conditional: 0, independent unconditional: 195, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 218, independent: 181, independent conditional: 0, independent unconditional: 181, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, independent: 14, independent conditional: 0, independent unconditional: 14, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 139, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 91, dependent conditional: 0, dependent unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 319, independent: 53, independent conditional: 0, independent unconditional: 53, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 218, unknown conditional: 0, unknown unconditional: 218] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 91 locations, 2 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: 5.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 168 IncrementalHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 4 mSDtfsCounter, 168 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 01:43:19,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c56fe455-8e04-459e-a7dc-f3c44459f899/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE