./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-1_2-join.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/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_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- 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 18:02:41,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:02:41,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:02:41,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:02:41,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:02:41,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:02:41,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:02:41,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:02:41,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:02:41,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:02:41,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:02:41,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:02:41,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:02:41,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:02:41,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:02:41,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:02:41,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:02:41,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:02:41,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:02:41,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:02:41,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:02:41,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:02:41,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:02:41,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:02:41,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:02:41,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:02:41,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:02:41,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:02:41,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:02:41,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:02:41,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:02:41,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:02:41,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:02:41,553 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:02:41,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:02:41,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:02:41,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:02:41,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:02:41,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:02:41,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:02:41,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:02:41,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 18:02:41,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:02:41,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:02:41,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:02:41,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:02:41,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:02:41,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:02:41,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:02:41,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:02:41,581 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:02:41,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:02:41,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:02:41,582 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:02:41,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:02:41,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:02:41,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:02:41,583 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:02:41,583 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:02:41,583 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:02:41,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:02:41,583 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:02:41,583 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:02:41,583 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:02:41,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:02:41,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:02:41,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:02:41,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:02:41,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:02:41,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:02:41,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:02:41,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:02:41,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:02:41,585 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:02:41,585 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:02:41,585 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:02:41,585 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_70c7d1ee-330f-411f-bc0a-dbc136b41934/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-12-13 18:02:41,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:02:41,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:02:41,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:02:41,792 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:02:41,792 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:02:41,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-12-13 18:02:44,490 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:02:44,725 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:02:44,725 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-12-13 18:02:44,737 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data/09ffaaf57/2d314487da304d5e9ed113e1a73f4148/FLAG815c71d69 [2022-12-13 18:02:44,749 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data/09ffaaf57/2d314487da304d5e9ed113e1a73f4148 [2022-12-13 18:02:44,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:02:44,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:02:44,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:02:44,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:02:44,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:02:44,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:02:44" (1/1) ... [2022-12-13 18:02:44,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9e7140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:44, skipping insertion in model container [2022-12-13 18:02:44,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:02:44" (1/1) ... [2022-12-13 18:02:44,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:02:44,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:02:45,315 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_70c7d1ee-330f-411f-bc0a-dbc136b41934/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-12-13 18:02:45,319 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:45,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:45,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:45,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:45,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:45,330 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:45,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:02:45,345 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:02:45,377 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_70c7d1ee-330f-411f-bc0a-dbc136b41934/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-12-13 18:02:45,377 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:45,378 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:45,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:45,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:45,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:45,381 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:45,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:02:45,477 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:02:45,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45 WrapperNode [2022-12-13 18:02:45,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:02:45,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:02:45,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:02:45,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:02:45,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,529 INFO L138 Inliner]: procedures = 482, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89 [2022-12-13 18:02:45,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:02:45,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:02:45,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:02:45,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:02:45,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:02:45,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:02:45,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:02:45,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:02:45,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (1/1) ... [2022-12-13 18:02:45,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:02:45,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:02:45,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:02:45,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:02:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:02:45,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:02:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 18:02:45,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:02:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:02:45,649 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 18:02:45,870 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:02:45,872 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:02:46,013 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:02:46,035 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:02:46,036 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:02:46,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:02:46 BoogieIcfgContainer [2022-12-13 18:02:46,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:02:46,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:02:46,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:02:46,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:02:46,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:02:44" (1/3) ... [2022-12-13 18:02:46,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65314115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:02:46, skipping insertion in model container [2022-12-13 18:02:46,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:45" (2/3) ... [2022-12-13 18:02:46,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65314115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:02:46, skipping insertion in model container [2022-12-13 18:02:46,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:02:46" (3/3) ... [2022-12-13 18:02:46,045 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-12-13 18:02:46,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:02:46,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 18:02:46,061 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:02:46,100 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:02:46,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 116 transitions, 240 flow [2022-12-13 18:02:46,173 INFO L130 PetriNetUnfolder]: 4/135 cut-off events. [2022-12-13 18:02:46,174 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:02:46,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 135 events. 4/135 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 222 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2022-12-13 18:02:46,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 116 transitions, 240 flow [2022-12-13 18:02:46,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 110 transitions, 226 flow [2022-12-13 18:02:46,182 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:02:46,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 110 transitions, 226 flow [2022-12-13 18:02:46,193 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 110 transitions, 226 flow [2022-12-13 18:02:46,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 110 transitions, 226 flow [2022-12-13 18:02:46,210 INFO L130 PetriNetUnfolder]: 4/125 cut-off events. [2022-12-13 18:02:46,210 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:02:46,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 4/125 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 76. Up to 3 conditions per place. [2022-12-13 18:02:46,211 INFO L119 LiptonReduction]: Number of co-enabled transitions 294 [2022-12-13 18:02:50,084 INFO L134 LiptonReduction]: Checked pairs total: 386 [2022-12-13 18:02:50,084 INFO L136 LiptonReduction]: Total number of compositions: 137 [2022-12-13 18:02:50,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:02:50,100 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@714cdf76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:02:50,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 18:02:50,102 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 18:02:50,102 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:02:50,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:02:50,103 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:02:50,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:02:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:50,107 INFO L85 PathProgramCache]: Analyzing trace with hash 460, now seen corresponding path program 1 times [2022-12-13 18:02:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:02:50,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221729331] [2022-12-13 18:02:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:02:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:02:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:02:50,247 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 18:02:50,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:02:50,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221729331] [2022-12-13 18:02:50,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221729331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:02:50,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:02:50,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:02:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614144886] [2022-12-13 18:02:50,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:02:50,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:02:50,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:02:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:02:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:02:50,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 253 [2022-12-13 18:02:50,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 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 18:02:50,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:02:50,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 253 [2022-12-13 18:02:50,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:02:50,311 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2022-12-13 18:02:50,311 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:02:50,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 33 events. 8/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 7 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 44. Up to 32 conditions per place. [2022-12-13 18:02:50,312 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2022-12-13 18:02:50,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2022-12-13 18:02:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:02:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:02:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 230 transitions. [2022-12-13 18:02:50,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2022-12-13 18:02:50,323 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 230 transitions. [2022-12-13 18:02:50,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 230 transitions. [2022-12-13 18:02:50,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:02:50,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 230 transitions. [2022-12-13 18:02:50,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 115.0) internal successors, (230), 2 states have internal predecessors, (230), 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 18:02:50,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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 18:02:50,331 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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 18:02:50,333 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 230 transitions. [2022-12-13 18:02:50,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2022-12-13 18:02:50,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:02:50,336 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2022-12-13 18:02:50,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=15} [2022-12-13 18:02:50,340 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2022-12-13 18:02:50,340 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2022-12-13 18:02:50,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 106.5) internal successors, (213), 2 states have internal predecessors, (213), 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 18:02:50,341 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:02:50,341 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:02:50,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:02:50,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:02:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:50,341 INFO L85 PathProgramCache]: Analyzing trace with hash 14561, now seen corresponding path program 1 times [2022-12-13 18:02:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:02:50,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809078852] [2022-12-13 18:02:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:02:50,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:02:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:02:50,503 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 18:02:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:02:50,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809078852] [2022-12-13 18:02:50,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809078852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:02:50,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:02:50,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:02:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513252983] [2022-12-13 18:02:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:02:50,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:02:50,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:02:50,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:02:50,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:02:50,516 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 253 [2022-12-13 18:02:50,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 15 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 18:02:50,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:02:50,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 253 [2022-12-13 18:02:50,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:02:50,550 INFO L130 PetriNetUnfolder]: 8/30 cut-off events. [2022-12-13 18:02:50,550 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:02:50,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 30 events. 8/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 53 event pairs, 7 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 59. Up to 28 conditions per place. [2022-12-13 18:02:50,551 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 12 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2022-12-13 18:02:50,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 16 transitions, 62 flow [2022-12-13 18:02:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:02:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:02:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2022-12-13 18:02:50,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42160737812911725 [2022-12-13 18:02:50,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2022-12-13 18:02:50,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2022-12-13 18:02:50,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:02:50,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2022-12-13 18:02:50,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 18:02:50,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,557 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 320 transitions. [2022-12-13 18:02:50,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 16 transitions, 62 flow [2022-12-13 18:02:50,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 16 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:02:50,557 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 48 flow [2022-12-13 18:02:50,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2022-12-13 18:02:50,558 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2022-12-13 18:02:50,558 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 48 flow [2022-12-13 18:02:50,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 18:02:50,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:02:50,558 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:02:50,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:02:50,559 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:02:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:50,559 INFO L85 PathProgramCache]: Analyzing trace with hash 14548, now seen corresponding path program 1 times [2022-12-13 18:02:50,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:02:50,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019767608] [2022-12-13 18:02:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:02:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:02:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:02:50,592 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 18:02:50,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:02:50,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019767608] [2022-12-13 18:02:50,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019767608] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:02:50,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:02:50,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:02:50,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914559754] [2022-12-13 18:02:50,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:02:50,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:02:50,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:02:50,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:02:50,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:02:50,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 253 [2022-12-13 18:02:50,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 18:02:50,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:02:50,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 253 [2022-12-13 18:02:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:02:50,648 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2022-12-13 18:02:50,648 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:02:50,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 26 events. 6/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 41 event pairs, 3 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 58. Up to 13 conditions per place. [2022-12-13 18:02:50,648 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 8 selfloop transitions, 4 changer transitions 1/15 dead transitions. [2022-12-13 18:02:50,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 67 flow [2022-12-13 18:02:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:02:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:02:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2022-12-13 18:02:50,652 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4137022397891963 [2022-12-13 18:02:50,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2022-12-13 18:02:50,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2022-12-13 18:02:50,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:02:50,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2022-12-13 18:02:50,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 18:02:50,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,659 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 48 flow. Second operand 3 states and 314 transitions. [2022-12-13 18:02:50,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 67 flow [2022-12-13 18:02:50,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:02:50,659 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 42 flow [2022-12-13 18:02:50,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2022-12-13 18:02:50,660 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2022-12-13 18:02:50,660 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 42 flow [2022-12-13 18:02:50,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 18:02:50,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:02:50,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:02:50,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:02:50,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:02:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash 13846437, now seen corresponding path program 1 times [2022-12-13 18:02:50,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:02:50,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086539683] [2022-12-13 18:02:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:02:50,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:02:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:02:50,737 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 18:02:50,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:02:50,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086539683] [2022-12-13 18:02:50,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086539683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:02:50,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:02:50,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:02:50,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557627063] [2022-12-13 18:02:50,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:02:50,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:02:50,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:02:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:02:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:02:50,750 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 253 [2022-12-13 18:02:50,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 18:02:50,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:02:50,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 253 [2022-12-13 18:02:50,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:02:50,784 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2022-12-13 18:02:50,784 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 18:02:50,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 31 events. 5/31 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 85 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 78. Up to 16 conditions per place. [2022-12-13 18:02:50,784 INFO L137 encePairwiseOnDemand]: 248/253 looper letters, 14 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2022-12-13 18:02:50,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 20 transitions, 105 flow [2022-12-13 18:02:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:02:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:02:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2022-12-13 18:02:50,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42028985507246375 [2022-12-13 18:02:50,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2022-12-13 18:02:50,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2022-12-13 18:02:50,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:02:50,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2022-12-13 18:02:50,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 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 18:02:50,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,789 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 42 flow. Second operand 3 states and 319 transitions. [2022-12-13 18:02:50,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 20 transitions, 105 flow [2022-12-13 18:02:50,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 20 transitions, 79 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 18:02:50,790 INFO L231 Difference]: Finished difference. Result has 20 places, 16 transitions, 58 flow [2022-12-13 18:02:50,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=20, PETRI_TRANSITIONS=16} [2022-12-13 18:02:50,791 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2022-12-13 18:02:50,791 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 16 transitions, 58 flow [2022-12-13 18:02:50,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 18:02:50,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:02:50,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:02:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:02:50,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:02:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash 429245831, now seen corresponding path program 1 times [2022-12-13 18:02:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:02:50,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911073651] [2022-12-13 18:02:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:02:50,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:02:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:02:50,888 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 18:02:50,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:02:50,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911073651] [2022-12-13 18:02:50,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911073651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:02:50,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:02:50,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:02:50,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335922484] [2022-12-13 18:02:50,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:02:50,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:02:50,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:02:50,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:02:50,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:02:50,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 253 [2022-12-13 18:02:50,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 18:02:50,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:02:50,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 253 [2022-12-13 18:02:50,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:02:50,954 INFO L130 PetriNetUnfolder]: 4/27 cut-off events. [2022-12-13 18:02:50,954 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 18:02:50,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 27 events. 4/27 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 54 event pairs, 2 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 72. Up to 21 conditions per place. [2022-12-13 18:02:50,955 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 10 selfloop transitions, 3 changer transitions 0/15 dead transitions. [2022-12-13 18:02:50,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 82 flow [2022-12-13 18:02:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:02:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:02:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2022-12-13 18:02:50,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42160737812911725 [2022-12-13 18:02:50,958 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2022-12-13 18:02:50,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2022-12-13 18:02:50,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:02:50,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2022-12-13 18:02:50,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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 18:02:50,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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 18:02:50,961 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 58 flow. Second operand 3 states and 320 transitions. [2022-12-13 18:02:50,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 82 flow [2022-12-13 18:02:50,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 15 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:02:50,962 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 54 flow [2022-12-13 18:02:50,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2022-12-13 18:02:50,963 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2022-12-13 18:02:50,963 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 54 flow [2022-12-13 18:02:50,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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 18:02:50,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:02:50,963 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:02:50,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:02:50,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:02:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:02:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash 429246344, now seen corresponding path program 1 times [2022-12-13 18:02:50,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:02:50,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060422114] [2022-12-13 18:02:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:02:50,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:02:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:02:50,985 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:02:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:02:51,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:02:51,015 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:02:51,016 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-13 18:02:51,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2022-12-13 18:02:51,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-12-13 18:02:51,018 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-12-13 18:02:51,019 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 18:02:51,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:02:51,019 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-13 18:02:51,023 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:02:51,023 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:02:51,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:02:51 BasicIcfg [2022-12-13 18:02:51,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:02:51,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:02:51,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:02:51,038 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:02:51,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:02:46" (3/4) ... [2022-12-13 18:02:51,040 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 18:02:51,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:02:51,041 INFO L158 Benchmark]: Toolchain (without parser) took 6287.57ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 98.5MB in the beginning and 50.2MB in the end (delta: 48.4MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2022-12-13 18:02:51,041 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 106.7MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:02:51,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.15ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 98.0MB in the beginning and 121.6MB in the end (delta: -23.7MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2022-12-13 18:02:51,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.43ms. Allocated memory is still 159.4MB. Free memory was 121.6MB in the beginning and 118.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:02:51,042 INFO L158 Benchmark]: Boogie Preprocessor took 47.63ms. Allocated memory is still 159.4MB. Free memory was 118.6MB in the beginning and 116.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:02:51,042 INFO L158 Benchmark]: RCFGBuilder took 458.99ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 93.4MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 18:02:51,043 INFO L158 Benchmark]: TraceAbstraction took 4997.68ms. Allocated memory is still 159.4MB. Free memory was 93.4MB in the beginning and 50.2MB in the end (delta: 43.3MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-12-13 18:02:51,043 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 159.4MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:02:51,045 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 132.1MB. Free memory was 106.7MB in the beginning and 106.7MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.15ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 98.0MB in the beginning and 121.6MB in the end (delta: -23.7MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.43ms. Allocated memory is still 159.4MB. Free memory was 121.6MB in the beginning and 118.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.63ms. Allocated memory is still 159.4MB. Free memory was 118.6MB in the beginning and 116.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 458.99ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 93.4MB in the end (delta: 22.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4997.68ms. Allocated memory is still 159.4MB. Free memory was 93.4MB in the beginning and 50.2MB in the end (delta: 43.3MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 159.4MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 109 PlacesBefore, 22 PlacesAfterwards, 110 TransitionsBefore, 20 TransitionsAfterwards, 294 CoEnabledTransitionPairs, 7 FixpointIterations, 93 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 137 TotalNumberOfCompositions, 386 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 321, independent: 285, independent conditional: 0, independent unconditional: 285, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 175, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 321, independent: 125, independent conditional: 0, independent unconditional: 125, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 175, unknown conditional: 0, unknown unconditional: 175] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=-1, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 121 locations, 12 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: 4.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 1 mSDtfsCounter, 179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 18:02:51,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/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_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-1_2-join.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f --- 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 18:02:52,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:02:52,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:02:52,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:02:52,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:02:52,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:02:52,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:02:52,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:02:52,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:02:52,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:02:52,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:02:52,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:02:52,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:02:52,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:02:52,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:02:52,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:02:52,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:02:52,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:02:52,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:02:52,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:02:52,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:02:52,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:02:52,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:02:52,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:02:52,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:02:52,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:02:52,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:02:52,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:02:52,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:02:52,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:02:52,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:02:52,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:02:52,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:02:52,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:02:52,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:02:52,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:02:52,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:02:52,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:02:52,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:02:52,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:02:52,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:02:52,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 18:02:52,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:02:52,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:02:52,851 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:02:52,851 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:02:52,852 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:02:52,852 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:02:52,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:02:52,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:02:52,853 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:02:52,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:02:52,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:02:52,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:02:52,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:02:52,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:02:52,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:02:52,854 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:02:52,854 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:02:52,855 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:02:52,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:02:52,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:02:52,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 18:02:52,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 18:02:52,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:02:52,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:02:52,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:02:52,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:02:52,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:02:52,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:02:52,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:02:52,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:02:52,862 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 18:02:52,863 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 18:02:52,863 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:02:52,863 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:02:52,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:02:52,863 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 18:02:52,863 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:02:52,864 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_70c7d1ee-330f-411f-bc0a-dbc136b41934/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd4c3d19582748238e9ca587d159d6e8fc23db581cd4de03be73dc785992e03f [2022-12-13 18:02:53,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:02:53,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:02:53,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:02:53,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:02:53,115 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:02:53,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-12-13 18:02:55,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:02:55,973 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:02:55,973 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/sv-benchmarks/c/ldv-races/race-1_2-join.i [2022-12-13 18:02:55,986 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data/6ba5317c7/6487c714af384c8790a22608567c3cdd/FLAGab17d5895 [2022-12-13 18:02:55,998 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/data/6ba5317c7/6487c714af384c8790a22608567c3cdd [2022-12-13 18:02:56,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:02:56,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:02:56,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:02:56,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:02:56,005 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:02:56,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:02:55" (1/1) ... [2022-12-13 18:02:56,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d40923a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56, skipping insertion in model container [2022-12-13 18:02:56,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:02:55" (1/1) ... [2022-12-13 18:02:56,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:02:56,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:02:56,514 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_70c7d1ee-330f-411f-bc0a-dbc136b41934/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-12-13 18:02:56,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:56,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:56,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:56,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:56,528 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:56,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:56,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:02:56,544 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:02:56,576 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_70c7d1ee-330f-411f-bc0a-dbc136b41934/sv-benchmarks/c/ldv-races/race-1_2-join.i[76153,76166] [2022-12-13 18:02:56,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:56,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:56,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:56,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:56,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:02:56,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:02:56,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:02:56,672 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:02:56,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56 WrapperNode [2022-12-13 18:02:56,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:02:56,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:02:56,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:02:56,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:02:56,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,743 INFO L138 Inliner]: procedures = 486, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2022-12-13 18:02:56,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:02:56,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:02:56,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:02:56,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:02:56,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:02:56,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:02:56,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:02:56,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:02:56,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (1/1) ... [2022-12-13 18:02:56,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:02:56,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:02:56,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:02:56,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 18:02:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:02:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:02:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 18:02:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:02:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 18:02:56,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 18:02:56,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 18:02:56,855 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 18:02:57,127 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:02:57,129 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:02:57,360 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:02:57,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:02:57,384 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:02:57,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:02:57 BoogieIcfgContainer [2022-12-13 18:02:57,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:02:57,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:02:57,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:02:57,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:02:57,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:02:55" (1/3) ... [2022-12-13 18:02:57,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313ea079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:02:57, skipping insertion in model container [2022-12-13 18:02:57,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:02:56" (2/3) ... [2022-12-13 18:02:57,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313ea079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:02:57, skipping insertion in model container [2022-12-13 18:02:57,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:02:57" (3/3) ... [2022-12-13 18:02:57,394 INFO L112 eAbstractionObserver]: Analyzing ICFG race-1_2-join.i [2022-12-13 18:02:57,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:02:57,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 18:02:57,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:02:57,448 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 18:02:57,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 238 flow [2022-12-13 18:02:57,512 INFO L130 PetriNetUnfolder]: 4/133 cut-off events. [2022-12-13 18:02:57,512 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:02:57,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 133 events. 4/133 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 221 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 80. Up to 3 conditions per place. [2022-12-13 18:02:57,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 115 transitions, 238 flow [2022-12-13 18:02:57,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 109 transitions, 224 flow [2022-12-13 18:02:57,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:02:57,528 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 109 transitions, 224 flow [2022-12-13 18:02:57,530 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 109 transitions, 224 flow [2022-12-13 18:02:57,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 109 transitions, 224 flow [2022-12-13 18:02:57,547 INFO L130 PetriNetUnfolder]: 4/123 cut-off events. [2022-12-13 18:02:57,547 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:02:57,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 123 events. 4/123 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 171 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2022-12-13 18:02:57,548 INFO L119 LiptonReduction]: Number of co-enabled transitions 280 [2022-12-13 18:03:06,755 INFO L134 LiptonReduction]: Checked pairs total: 393 [2022-12-13 18:03:06,755 INFO L136 LiptonReduction]: Total number of compositions: 132 [2022-12-13 18:03:06,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:03:06,770 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@7deaedc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:03:06,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 18:03:06,772 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 18:03:06,772 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:03:06,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:03:06,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:03:06,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:03:06,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash 445, now seen corresponding path program 1 times [2022-12-13 18:03:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:03:06,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412815376] [2022-12-13 18:03:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:06,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:06,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:03:06,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 18:03:06,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 18:03:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:06,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 18:03:06,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:06,873 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 18:03:06,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:06,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:03:06,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412815376] [2022-12-13 18:03:06,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412815376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:06,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:06,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:03:06,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796662284] [2022-12-13 18:03:06,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:06,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:03:06,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:03:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:03:06,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:03:06,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 247 [2022-12-13 18:03:06,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 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 18:03:06,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:03:06,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 247 [2022-12-13 18:03:06,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:03:06,956 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2022-12-13 18:03:06,956 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:03:06,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 33 events. 8/33 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 7 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 44. Up to 32 conditions per place. [2022-12-13 18:03:06,957 INFO L137 encePairwiseOnDemand]: 242/247 looper letters, 13 selfloop transitions, 0 changer transitions 0/15 dead transitions. [2022-12-13 18:03:06,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 62 flow [2022-12-13 18:03:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:03:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:03:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 228 transitions. [2022-12-13 18:03:06,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2022-12-13 18:03:06,969 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 228 transitions. [2022-12-13 18:03:06,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 228 transitions. [2022-12-13 18:03:06,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:03:06,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 228 transitions. [2022-12-13 18:03:06,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 114.0) internal successors, (228), 2 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) [2022-12-13 18:03:06,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 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 18:03:06,979 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 247.0) internal successors, (741), 3 states have internal predecessors, (741), 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 18:03:06,980 INFO L175 Difference]: Start difference. First operand has 22 places, 20 transitions, 46 flow. Second operand 2 states and 228 transitions. [2022-12-13 18:03:06,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 62 flow [2022-12-13 18:03:06,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:03:06,987 INFO L231 Difference]: Finished difference. Result has 16 places, 15 transitions, 32 flow [2022-12-13 18:03:06,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=32, PETRI_PLACES=16, PETRI_TRANSITIONS=15} [2022-12-13 18:03:06,992 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -6 predicate places. [2022-12-13 18:03:06,992 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 15 transitions, 32 flow [2022-12-13 18:03:06,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 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 18:03:06,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:03:06,992 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:03:07,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:03:07,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:07,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:03:07,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash 14297, now seen corresponding path program 1 times [2022-12-13 18:03:07,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:03:07,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631672149] [2022-12-13 18:03:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:07,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:03:07,204 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 18:03:07,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 18:03:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:07,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 18:03:07,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:07,360 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 18:03:07,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:07,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:03:07,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631672149] [2022-12-13 18:03:07,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631672149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:07,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:07,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:03:07,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225620386] [2022-12-13 18:03:07,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:07,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:07,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:03:07,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:07,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:07,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 247 [2022-12-13 18:03:07,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 15 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 18:03:07,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:03:07,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 247 [2022-12-13 18:03:07,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:03:07,480 INFO L130 PetriNetUnfolder]: 6/29 cut-off events. [2022-12-13 18:03:07,480 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:03:07,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 29 events. 6/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 3 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 57. Up to 15 conditions per place. [2022-12-13 18:03:07,481 INFO L137 encePairwiseOnDemand]: 241/247 looper letters, 8 selfloop transitions, 5 changer transitions 0/15 dead transitions. [2022-12-13 18:03:07,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 15 transitions, 58 flow [2022-12-13 18:03:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:03:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2022-12-13 18:03:07,484 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41970310391363025 [2022-12-13 18:03:07,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2022-12-13 18:03:07,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2022-12-13 18:03:07,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:03:07,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2022-12-13 18:03:07,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 18:03:07,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:07,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:07,488 INFO L175 Difference]: Start difference. First operand has 16 places, 15 transitions, 32 flow. Second operand 3 states and 311 transitions. [2022-12-13 18:03:07,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 15 transitions, 58 flow [2022-12-13 18:03:07,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 15 transitions, 58 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:03:07,489 INFO L231 Difference]: Finished difference. Result has 18 places, 14 transitions, 40 flow [2022-12-13 18:03:07,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=18, PETRI_TRANSITIONS=14} [2022-12-13 18:03:07,489 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -4 predicate places. [2022-12-13 18:03:07,489 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 14 transitions, 40 flow [2022-12-13 18:03:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 18:03:07,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:03:07,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:03:07,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 18:03:07,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:07,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:03:07,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 14307, now seen corresponding path program 1 times [2022-12-13 18:03:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:03:07,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259171376] [2022-12-13 18:03:07,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:07,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:03:07,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 18:03:07,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 18:03:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:07,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:03:07,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:07,925 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 18:03:07,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:07,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:03:07,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259171376] [2022-12-13 18:03:07,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259171376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:07,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:07,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:03:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105546953] [2022-12-13 18:03:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:07,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:03:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:07,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 247 [2022-12-13 18:03:07,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 18:03:07,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:03:07,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 247 [2022-12-13 18:03:07,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:03:08,005 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2022-12-13 18:03:08,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:03:08,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 26 events. 6/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 40 event pairs, 6 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 59. Up to 24 conditions per place. [2022-12-13 18:03:08,006 INFO L137 encePairwiseOnDemand]: 243/247 looper letters, 11 selfloop transitions, 0 changer transitions 1/14 dead transitions. [2022-12-13 18:03:08,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 14 transitions, 64 flow [2022-12-13 18:03:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:03:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2022-12-13 18:03:08,009 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4251012145748988 [2022-12-13 18:03:08,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2022-12-13 18:03:08,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2022-12-13 18:03:08,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:03:08,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2022-12-13 18:03:08,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 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 18:03:08,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:08,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:08,014 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 40 flow. Second operand 3 states and 315 transitions. [2022-12-13 18:03:08,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 14 transitions, 64 flow [2022-12-13 18:03:08,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:03:08,015 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 34 flow [2022-12-13 18:03:08,015 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-12-13 18:03:08,016 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2022-12-13 18:03:08,016 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 34 flow [2022-12-13 18:03:08,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 18:03:08,017 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:03:08,017 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 18:03:08,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 18:03:08,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:08,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:03:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash 13695403, now seen corresponding path program 1 times [2022-12-13 18:03:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:03:08,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551898339] [2022-12-13 18:03:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:08,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:08,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:03:08,227 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 18:03:08,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 18:03:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:08,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:03:08,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:08,402 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 18:03:08,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:08,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:03:08,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551898339] [2022-12-13 18:03:08,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551898339] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:08,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:08,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:03:08,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495397500] [2022-12-13 18:03:08,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:08,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:03:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:08,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:08,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 247 [2022-12-13 18:03:08,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 18:03:08,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:03:08,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 247 [2022-12-13 18:03:08,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:03:08,474 INFO L130 PetriNetUnfolder]: 5/31 cut-off events. [2022-12-13 18:03:08,474 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 18:03:08,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 31 events. 5/31 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 82 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 68. Up to 16 conditions per place. [2022-12-13 18:03:08,475 INFO L137 encePairwiseOnDemand]: 242/247 looper letters, 14 selfloop transitions, 4 changer transitions 0/20 dead transitions. [2022-12-13 18:03:08,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 91 flow [2022-12-13 18:03:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:03:08,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2022-12-13 18:03:08,477 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42645074224021595 [2022-12-13 18:03:08,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2022-12-13 18:03:08,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2022-12-13 18:03:08,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:03:08,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2022-12-13 18:03:08,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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 18:03:08,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:08,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:08,480 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 34 flow. Second operand 3 states and 316 transitions. [2022-12-13 18:03:08,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 91 flow [2022-12-13 18:03:08,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 79 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 18:03:08,481 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 58 flow [2022-12-13 18:03:08,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-12-13 18:03:08,481 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2022-12-13 18:03:08,481 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 58 flow [2022-12-13 18:03:08,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 18:03:08,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:03:08,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:03:08,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 18:03:08,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:08,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:03:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash 424563337, now seen corresponding path program 1 times [2022-12-13 18:03:08,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:03:08,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195806152] [2022-12-13 18:03:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:08,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:08,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:03:08,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 18:03:08,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 18:03:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:03:08,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:03:08,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:03:08,852 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 18:03:08,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:03:08,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 18:03:08,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195806152] [2022-12-13 18:03:08,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195806152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:03:08,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:03:08,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:03:08,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707678859] [2022-12-13 18:03:08,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:03:08,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:03:08,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 18:03:08,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:03:08,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:03:08,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 247 [2022-12-13 18:03:08,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 18:03:08,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:03:08,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 247 [2022-12-13 18:03:08,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:03:08,963 INFO L130 PetriNetUnfolder]: 3/23 cut-off events. [2022-12-13 18:03:08,963 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 18:03:08,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 23 events. 3/23 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 38 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 62. Up to 17 conditions per place. [2022-12-13 18:03:08,963 INFO L137 encePairwiseOnDemand]: 243/247 looper letters, 9 selfloop transitions, 3 changer transitions 0/14 dead transitions. [2022-12-13 18:03:08,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 78 flow [2022-12-13 18:03:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:03:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:03:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2022-12-13 18:03:08,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41970310391363025 [2022-12-13 18:03:08,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2022-12-13 18:03:08,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2022-12-13 18:03:08,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:03:08,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2022-12-13 18:03:08,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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 18:03:08,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:08,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 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 18:03:08,968 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 58 flow. Second operand 3 states and 311 transitions. [2022-12-13 18:03:08,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 78 flow [2022-12-13 18:03:08,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 14 transitions, 70 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:03:08,968 INFO L231 Difference]: Finished difference. Result has 19 places, 14 transitions, 52 flow [2022-12-13 18:03:08,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=14} [2022-12-13 18:03:08,969 INFO L288 CegarLoopForPetriNet]: 22 programPoint places, -3 predicate places. [2022-12-13 18:03:08,969 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 52 flow [2022-12-13 18:03:08,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 18:03:08,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:03:08,969 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:03:08,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-13 18:03:09,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:09,170 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 18:03:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:03:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash 424564164, now seen corresponding path program 1 times [2022-12-13 18:03:09,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 18:03:09,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184463216] [2022-12-13 18:03:09,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:03:09,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:09,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 18:03:09,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 18:03:09,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 18:03:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:03:09,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:03:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:03:09,288 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 18:03:09,289 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:03:09,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-13 18:03:09,291 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2022-12-13 18:03:09,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 18:03:09,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 18:03:09,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 12 remaining) [2022-12-13 18:03:09,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (6 of 12 remaining) [2022-12-13 18:03:09,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-13 18:03:09,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-13 18:03:09,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-12-13 18:03:09,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 12 remaining) [2022-12-13 18:03:09,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-12-13 18:03:09,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2022-12-13 18:03:09,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 18:03:09,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 18:03:09,494 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-13 18:03:09,501 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:03:09,501 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:03:09,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:03:09 BasicIcfg [2022-12-13 18:03:09,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:03:09,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:03:09,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:03:09,564 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:03:09,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:02:57" (3/4) ... [2022-12-13 18:03:09,571 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 18:03:09,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:03:09,573 INFO L158 Benchmark]: Toolchain (without parser) took 13571.46ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 48.0MB in the beginning and 67.0MB in the end (delta: -19.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:03:09,574 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:03:09,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 670.81ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 51.7MB in the end (delta: -3.9MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2022-12-13 18:03:09,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.24ms. Allocated memory is still 83.9MB. Free memory was 51.7MB in the beginning and 48.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 18:03:09,576 INFO L158 Benchmark]: Boogie Preprocessor took 51.95ms. Allocated memory is still 83.9MB. Free memory was 48.3MB in the beginning and 45.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:03:09,577 INFO L158 Benchmark]: RCFGBuilder took 589.77ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 45.1MB in the beginning and 56.1MB in the end (delta: -11.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 18:03:09,578 INFO L158 Benchmark]: TraceAbstraction took 12173.43ms. Allocated memory is still 100.7MB. Free memory was 55.6MB in the beginning and 67.0MB in the end (delta: -11.5MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2022-12-13 18:03:09,579 INFO L158 Benchmark]: Witness Printer took 8.45ms. Allocated memory is still 100.7MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:03:09,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 670.81ms. Allocated memory is still 83.9MB. Free memory was 47.8MB in the beginning and 51.7MB in the end (delta: -3.9MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.24ms. Allocated memory is still 83.9MB. Free memory was 51.7MB in the beginning and 48.3MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.95ms. Allocated memory is still 83.9MB. Free memory was 48.3MB in the beginning and 45.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 589.77ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 45.1MB in the beginning and 56.1MB in the end (delta: -11.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12173.43ms. Allocated memory is still 100.7MB. Free memory was 55.6MB in the beginning and 67.0MB in the end (delta: -11.5MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Witness Printer took 8.45ms. Allocated memory is still 100.7MB. Free memory is still 67.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.2s, 108 PlacesBefore, 22 PlacesAfterwards, 109 TransitionsBefore, 20 TransitionsAfterwards, 280 CoEnabledTransitionPairs, 8 FixpointIterations, 91 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 5 ConcurrentYvCompositions, 3 ChoiceCompositions, 132 TotalNumberOfCompositions, 393 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 319, independent: 276, independent conditional: 0, independent unconditional: 276, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 168, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 319, independent: 123, independent conditional: 0, independent unconditional: 123, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 168, unknown conditional: 0, unknown unconditional: 168] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1695. Possible FailurePath: [L1696] 0 pthread_t t1; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] FCALL, FORK 0 pthread_create(&t1, ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, mutex={4:0}, pdev=1, pthread_create(&t1, ((void *)0), thread1, ((void *)0))=0, t1={3:0}] [L1714] 0 pdev = 2 VAL [arg={0:0}, mutex={4:0}, pdev=2, t1={3:0}] [L1702] 1 pdev = 6 [L1705] 1 return 0; [L1717] CALL 0 ldv_assert(pdev==2) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1733]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 120 locations, 12 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: 12.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 2 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 89 SizeOfPredicates, 1 NumberOfNonLiveVariables, 208 ConjunctsInSsa, 17 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 18:03:09,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70c7d1ee-330f-411f-bc0a-dbc136b41934/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: UNKNOWN: Overapproximated counterexample