./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/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_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8 --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 1985bb251db70a1c798d345be7e1671f9dcc6a359b969ca99d23e0003d9a3770 --- 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 19:44:01,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:44:01,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:44:01,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:44:01,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:44:01,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:44:01,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:44:01,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:44:01,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:44:01,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:44:01,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:44:01,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:44:01,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:44:01,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:44:01,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:44:01,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:44:01,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:44:01,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:44:01,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:44:01,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:44:01,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:44:01,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:44:01,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:44:01,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:44:01,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:44:01,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:44:01,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:44:01,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:44:01,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:44:01,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:44:01,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:44:01,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:44:01,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:44:01,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:44:01,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:44:01,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:44:01,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:44:01,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:44:01,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:44:01,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:44:01,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:44:01,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:44:01,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:44:01,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:44:01,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:44:01,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:44:01,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:44:01,552 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:44:01,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:44:01,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:44:01,552 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:44:01,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:44:01,553 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:44:01,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:44:01,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:44:01,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:44:01,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:44:01,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:44:01,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:44:01,554 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:44:01,554 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:44:01,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:44:01,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:44:01,555 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:44:01,555 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:44:01,555 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:44:01,555 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:44:01,555 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:44:01,555 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_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1985bb251db70a1c798d345be7e1671f9dcc6a359b969ca99d23e0003d9a3770 [2022-12-13 19:44:01,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:44:01,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:44:01,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:44:01,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:44:01,740 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:44:01,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/time_var_mutex.i [2022-12-13 19:44:04,313 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:44:04,497 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:44:04,497 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/sv-benchmarks/c/pthread-atomic/time_var_mutex.i [2022-12-13 19:44:04,507 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/data/90890c81d/a65c8eb0843044a3ba1903b04a9d7bcc/FLAGbb73dda28 [2022-12-13 19:44:04,517 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/data/90890c81d/a65c8eb0843044a3ba1903b04a9d7bcc [2022-12-13 19:44:04,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:44:04,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:44:04,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:44:04,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:44:04,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:44:04,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fd7ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04, skipping insertion in model container [2022-12-13 19:44:04,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:44:04,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:44:04,749 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_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30247,30260] [2022-12-13 19:44:04,753 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_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30452,30465] [2022-12-13 19:44:04,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:44:04,768 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:44:04,793 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_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30247,30260] [2022-12-13 19:44:04,794 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_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/sv-benchmarks/c/pthread-atomic/time_var_mutex.i[30452,30465] [2022-12-13 19:44:04,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:44:04,819 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:44:04,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04 WrapperNode [2022-12-13 19:44:04,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:44:04,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:44:04,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:44:04,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:44:04,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,848 INFO L138 Inliner]: procedures = 169, calls = 34, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2022-12-13 19:44:04,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:44:04,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:44:04,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:44:04,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:44:04,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,862 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,864 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:44:04,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:44:04,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:44:04,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:44:04,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (1/1) ... [2022-12-13 19:44:04,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:44:04,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:44:04,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:44:04,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:44:04,914 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2022-12-13 19:44:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2022-12-13 19:44:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:44:04,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:44:04,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:44:04,916 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 19:44:05,005 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:44:05,007 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:44:05,153 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:44:05,159 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:44:05,159 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:44:05,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:44:05 BoogieIcfgContainer [2022-12-13 19:44:05,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:44:05,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:44:05,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:44:05,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:44:05,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:44:04" (1/3) ... [2022-12-13 19:44:05,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c6b1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:44:05, skipping insertion in model container [2022-12-13 19:44:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:44:04" (2/3) ... [2022-12-13 19:44:05,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c6b1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:44:05, skipping insertion in model container [2022-12-13 19:44:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:44:05" (3/3) ... [2022-12-13 19:44:05,167 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2022-12-13 19:44:05,174 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:44:05,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:44:05,182 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:44:05,182 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:44:05,248 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:44:05,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 102 transitions, 220 flow [2022-12-13 19:44:05,314 INFO L130 PetriNetUnfolder]: 5/100 cut-off events. [2022-12-13 19:44:05,314 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:44:05,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 5/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2022-12-13 19:44:05,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 102 transitions, 220 flow [2022-12-13 19:44:05,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 90 transitions, 189 flow [2022-12-13 19:44:05,325 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:44:05,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 90 transitions, 189 flow [2022-12-13 19:44:05,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 90 transitions, 189 flow [2022-12-13 19:44:05,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 189 flow [2022-12-13 19:44:05,355 INFO L130 PetriNetUnfolder]: 5/90 cut-off events. [2022-12-13 19:44:05,355 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:44:05,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 90 events. 5/90 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2022-12-13 19:44:05,356 INFO L119 LiptonReduction]: Number of co-enabled transitions 1042 [2022-12-13 19:44:08,257 INFO L134 LiptonReduction]: Checked pairs total: 3334 [2022-12-13 19:44:08,257 INFO L136 LiptonReduction]: Total number of compositions: 73 [2022-12-13 19:44:08,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:44:08,272 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;@703efaf7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:44:08,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 19:44:08,276 INFO L130 PetriNetUnfolder]: 1/10 cut-off events. [2022-12-13 19:44:08,276 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:44:08,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:08,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:44:08,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 19:44:08,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash 345978553, now seen corresponding path program 1 times [2022-12-13 19:44:08,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:08,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971606254] [2022-12-13 19:44:08,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:08,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:08,453 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 19:44:08,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:08,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971606254] [2022-12-13 19:44:08,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971606254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:08,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:08,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:44:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410847908] [2022-12-13 19:44:08,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:08,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:44:08,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:44:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:44:08,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 175 [2022-12-13 19:44:08,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 19:44:08,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:08,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 175 [2022-12-13 19:44:08,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:08,574 INFO L130 PetriNetUnfolder]: 112/244 cut-off events. [2022-12-13 19:44:08,574 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 19:44:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 244 events. 112/244 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1086 event pairs, 43 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 418. Up to 108 conditions per place. [2022-12-13 19:44:08,577 INFO L137 encePairwiseOnDemand]: 171/175 looper letters, 22 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2022-12-13 19:44:08,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 120 flow [2022-12-13 19:44:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:44:08,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:44:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-12-13 19:44:08,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5580952380952381 [2022-12-13 19:44:08,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-12-13 19:44:08,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-12-13 19:44:08,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:08,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-12-13 19:44:08,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 19:44:08,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:08,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:08,607 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 59 flow. Second operand 3 states and 293 transitions. [2022-12-13 19:44:08,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 120 flow [2022-12-13 19:44:08,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 114 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 19:44:08,612 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 54 flow [2022-12-13 19:44:08,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2022-12-13 19:44:08,617 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2022-12-13 19:44:08,617 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 54 flow [2022-12-13 19:44:08,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 19:44:08,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:08,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:08,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:44:08,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 19:44:08,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:08,619 INFO L85 PathProgramCache]: Analyzing trace with hash 110547891, now seen corresponding path program 1 times [2022-12-13 19:44:08,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:08,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237498579] [2022-12-13 19:44:08,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:08,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:08,671 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 19:44:08,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:08,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237498579] [2022-12-13 19:44:08,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237498579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:08,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:08,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:44:08,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420838769] [2022-12-13 19:44:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:08,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:44:08,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:08,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:44:08,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:44:08,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 175 [2022-12-13 19:44:08,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 19:44:08,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:08,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 175 [2022-12-13 19:44:08,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:08,756 INFO L130 PetriNetUnfolder]: 178/360 cut-off events. [2022-12-13 19:44:08,756 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:44:08,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 360 events. 178/360 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1534 event pairs, 78 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 584. Up to 196 conditions per place. [2022-12-13 19:44:08,758 INFO L137 encePairwiseOnDemand]: 169/175 looper letters, 24 selfloop transitions, 4 changer transitions 3/34 dead transitions. [2022-12-13 19:44:08,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 34 transitions, 141 flow [2022-12-13 19:44:08,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:44:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:44:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2022-12-13 19:44:08,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.56 [2022-12-13 19:44:08,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2022-12-13 19:44:08,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2022-12-13 19:44:08,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:08,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2022-12-13 19:44:08,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 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 19:44:08,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:08,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:08,765 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 54 flow. Second operand 3 states and 294 transitions. [2022-12-13 19:44:08,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 34 transitions, 141 flow [2022-12-13 19:44:08,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:44:08,766 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 78 flow [2022-12-13 19:44:08,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2022-12-13 19:44:08,767 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2022-12-13 19:44:08,767 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 78 flow [2022-12-13 19:44:08,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 19:44:08,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:08,768 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:08,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:44:08,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 19:44:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash -875879741, now seen corresponding path program 1 times [2022-12-13 19:44:08,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:08,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680978681] [2022-12-13 19:44:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:08,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:08,823 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 19:44:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:08,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680978681] [2022-12-13 19:44:08,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680978681] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:44:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045803039] [2022-12-13 19:44:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:08,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:44:08,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:44:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:44:08,834 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 175 [2022-12-13 19:44:08,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 19:44:08,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:08,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 175 [2022-12-13 19:44:08,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:08,892 INFO L130 PetriNetUnfolder]: 150/316 cut-off events. [2022-12-13 19:44:08,892 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-12-13 19:44:08,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 316 events. 150/316 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1336 event pairs, 80 based on Foata normal form. 22/325 useless extension candidates. Maximal degree in co-relation 578. Up to 185 conditions per place. [2022-12-13 19:44:08,894 INFO L137 encePairwiseOnDemand]: 171/175 looper letters, 23 selfloop transitions, 2 changer transitions 4/32 dead transitions. [2022-12-13 19:44:08,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 149 flow [2022-12-13 19:44:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:44:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:44:08,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-12-13 19:44:08,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561904761904762 [2022-12-13 19:44:08,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-12-13 19:44:08,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-12-13 19:44:08,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:08,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-12-13 19:44:08,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 19:44:08,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:08,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:08,900 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 78 flow. Second operand 3 states and 292 transitions. [2022-12-13 19:44:08,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 149 flow [2022-12-13 19:44:08,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 143 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:44:08,902 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 74 flow [2022-12-13 19:44:08,902 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2022-12-13 19:44:08,903 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-12-13 19:44:08,903 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 74 flow [2022-12-13 19:44:08,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 19:44:08,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:08,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:44:08,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 19:44:08,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1348748242, now seen corresponding path program 1 times [2022-12-13 19:44:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:08,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255590218] [2022-12-13 19:44:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:08,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:09,024 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 19:44:09,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:09,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255590218] [2022-12-13 19:44:09,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255590218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:09,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:09,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:44:09,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917117712] [2022-12-13 19:44:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:09,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:44:09,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:44:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:44:09,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 175 [2022-12-13 19:44:09,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 19:44:09,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:09,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 175 [2022-12-13 19:44:09,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:09,142 INFO L130 PetriNetUnfolder]: 155/334 cut-off events. [2022-12-13 19:44:09,142 INFO L131 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2022-12-13 19:44:09,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 334 events. 155/334 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1422 event pairs, 38 based on Foata normal form. 8/332 useless extension candidates. Maximal degree in co-relation 636. Up to 107 conditions per place. [2022-12-13 19:44:09,144 INFO L137 encePairwiseOnDemand]: 167/175 looper letters, 23 selfloop transitions, 10 changer transitions 18/53 dead transitions. [2022-12-13 19:44:09,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 259 flow [2022-12-13 19:44:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:44:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:44:09,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2022-12-13 19:44:09,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.512 [2022-12-13 19:44:09,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2022-12-13 19:44:09,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2022-12-13 19:44:09,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:09,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2022-12-13 19:44:09,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 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 19:44:09,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 19:44:09,148 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 19:44:09,148 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 74 flow. Second operand 5 states and 448 transitions. [2022-12-13 19:44:09,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 259 flow [2022-12-13 19:44:09,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:44:09,149 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 100 flow [2022-12-13 19:44:09,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2022-12-13 19:44:09,150 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2022-12-13 19:44:09,150 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 100 flow [2022-12-13 19:44:09,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 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 19:44:09,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:44:09,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:44:09,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:44:09,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION === [allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 19:44:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:44:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1924299360, now seen corresponding path program 2 times [2022-12-13 19:44:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:44:09,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310783066] [2022-12-13 19:44:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:44:09,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:44:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:44:09,201 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 19:44:09,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:44:09,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310783066] [2022-12-13 19:44:09,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310783066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:44:09,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:44:09,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:44:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214548936] [2022-12-13 19:44:09,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:44:09,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:44:09,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:44:09,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:44:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:44:09,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 175 [2022-12-13 19:44:09,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 19:44:09,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:44:09,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 175 [2022-12-13 19:44:09,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:44:09,244 INFO L130 PetriNetUnfolder]: 49/134 cut-off events. [2022-12-13 19:44:09,244 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 19:44:09,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 134 events. 49/134 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 485 event pairs, 23 based on Foata normal form. 8/139 useless extension candidates. Maximal degree in co-relation 248. Up to 60 conditions per place. [2022-12-13 19:44:09,245 INFO L137 encePairwiseOnDemand]: 173/175 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2022-12-13 19:44:09,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 142 flow [2022-12-13 19:44:09,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:44:09,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:44:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2022-12-13 19:44:09,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5561904761904762 [2022-12-13 19:44:09,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2022-12-13 19:44:09,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2022-12-13 19:44:09,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:44:09,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2022-12-13 19:44:09,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 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 19:44:09,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:09,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 19:44:09,250 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 100 flow. Second operand 3 states and 292 transitions. [2022-12-13 19:44:09,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 142 flow [2022-12-13 19:44:09,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 128 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-12-13 19:44:09,252 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2022-12-13 19:44:09,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=175, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2022-12-13 19:44:09,252 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2022-12-13 19:44:09,253 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2022-12-13 19:44:09,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 19:44:09,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-13 19:44:09,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-13 19:44:09,255 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-13 19:44:09,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-13 19:44:09,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-13 19:44:09,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-13 19:44:09,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:44:09,256 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-13 19:44:09,261 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:44:09,261 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:44:09,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:44:09 BasicIcfg [2022-12-13 19:44:09,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:44:09,264 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:44:09,264 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:44:09,264 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:44:09,265 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:44:05" (3/4) ... [2022-12-13 19:44:09,267 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 19:44:09,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure allocator [2022-12-13 19:44:09,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure de_allocator [2022-12-13 19:44:09,274 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-13 19:44:09,274 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 19:44:09,274 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 19:44:09,274 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 19:44:09,297 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:44:09,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:44:09,297 INFO L158 Benchmark]: Toolchain (without parser) took 4777.16ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 97.5MB in the beginning and 104.1MB in the end (delta: -6.6MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2022-12-13 19:44:09,298 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:44:09,298 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.36ms. Allocated memory is still 127.9MB. Free memory was 97.5MB in the beginning and 77.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 19:44:09,298 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.81ms. Allocated memory is still 127.9MB. Free memory was 77.8MB in the beginning and 75.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:44:09,298 INFO L158 Benchmark]: Boogie Preprocessor took 16.25ms. Allocated memory is still 127.9MB. Free memory was 75.8MB in the beginning and 74.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:44:09,299 INFO L158 Benchmark]: RCFGBuilder took 294.93ms. Allocated memory is still 127.9MB. Free memory was 74.1MB in the beginning and 59.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 19:44:09,299 INFO L158 Benchmark]: TraceAbstraction took 4101.24ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 59.4MB in the beginning and 106.3MB in the end (delta: -46.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:44:09,299 INFO L158 Benchmark]: Witness Printer took 32.90ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 104.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:44:09,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.36ms. Allocated memory is still 127.9MB. Free memory was 97.5MB in the beginning and 77.8MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.81ms. Allocated memory is still 127.9MB. Free memory was 77.8MB in the beginning and 75.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.25ms. Allocated memory is still 127.9MB. Free memory was 75.8MB in the beginning and 74.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 294.93ms. Allocated memory is still 127.9MB. Free memory was 74.1MB in the beginning and 59.9MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4101.24ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 59.4MB in the beginning and 106.3MB in the end (delta: -46.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 32.90ms. Allocated memory is still 155.2MB. Free memory was 106.3MB in the beginning and 104.1MB in the end (delta: 2.2MB). 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: 2.9s, 92 PlacesBefore, 29 PlacesAfterwards, 90 TransitionsBefore, 25 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 7 FixpointIterations, 42 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 3334 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1759, independent: 1569, independent conditional: 0, independent unconditional: 1569, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 596, independent: 570, independent conditional: 0, independent unconditional: 570, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1759, independent: 999, independent conditional: 0, independent unconditional: 999, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 596, unknown conditional: 0, unknown unconditional: 596] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 702]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 710]: 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 5 procedures, 131 locations, 6 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: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 17 mSDtfsCounter, 256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=4, InterpolantAutomatonStates: 17, 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, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 66 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 19:44:09,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee30f0c-51ce-42a3-bda6-45aad9ef82d9/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