./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS --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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:05:26,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:05:26,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:05:26,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:05:26,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:05:26,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:05:26,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:05:26,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:05:26,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:05:26,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:05:26,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:05:26,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:05:26,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:05:26,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:05:26,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:05:26,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:05:26,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:05:26,344 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:05:26,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:05:26,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:05:26,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:05:26,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:05:26,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:05:26,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:05:26,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:05:26,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:05:26,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:05:26,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:05:26,359 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:05:26,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:05:26,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:05:26,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:05:26,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:05:26,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:05:26,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:05:26,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:05:26,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:05:26,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:05:26,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:05:26,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:05:26,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:05:26,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-23 03:05:26,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:05:26,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:05:26,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:05:26,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:05:26,394 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:05:26,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:05:26,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:05:26,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:05:26,396 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:05:26,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:05:26,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:05:26,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:05:26,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:05:26,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:05:26,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:05:26,398 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:05:26,398 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:05:26,399 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:05:26,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:05:26,399 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:05:26,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:05:26,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:05:26,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:05:26,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:05:26,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:05:26,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:05:26,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:05:26,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:05:26,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:05:26,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:05:26,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:05:26,402 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:05:26,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:05:26,403 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_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2022-11-23 03:05:26,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:05:26,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:05:26,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:05:26,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:05:26,718 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:05:26,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-23 03:05:29,848 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:05:30,229 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:05:30,230 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-23 03:05:30,249 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data/7fd96ad84/226c146108e9455eae0e06cc28f6078c/FLAGdc6963f7f [2022-11-23 03:05:30,267 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data/7fd96ad84/226c146108e9455eae0e06cc28f6078c [2022-11-23 03:05:30,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:05:30,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:05:30,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:05:30,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:05:30,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:05:30,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:30,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39dd08f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30, skipping insertion in model container [2022-11-23 03:05:30,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:30,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:05:30,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:05:30,800 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_eb866d99-5e2d-4197-8c3f-9f10d2dede40/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-23 03:05:30,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:05:30,818 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:05:30,882 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_eb866d99-5e2d-4197-8c3f-9f10d2dede40/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-23 03:05:30,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:05:30,937 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:05:30,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30 WrapperNode [2022-11-23 03:05:30,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:05:30,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:05:30,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:05:30,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:05:30,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:30,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:30,995 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-23 03:05:30,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:05:30,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:05:30,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:05:30,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:05:31,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:05:31,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:05:31,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:05:31,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:05:31,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (1/1) ... [2022-11-23 03:05:31,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:05:31,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:31,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:05:31,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:05:31,111 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 03:05:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 03:05:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 03:05:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 03:05:31,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:05:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:05:31,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:05:31,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:05:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:05:31,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:05:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:05:31,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:05:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:05:31,118 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:05:31,338 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:05:31,340 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:05:31,570 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:05:31,578 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:05:31,579 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:05:31,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:31 BoogieIcfgContainer [2022-11-23 03:05:31,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:05:31,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:05:31,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:05:31,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:05:31,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:05:30" (1/3) ... [2022-11-23 03:05:31,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ddba0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:31, skipping insertion in model container [2022-11-23 03:05:31,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:30" (2/3) ... [2022-11-23 03:05:31,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ddba0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:31, skipping insertion in model container [2022-11-23 03:05:31,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:31" (3/3) ... [2022-11-23 03:05:31,593 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-11-23 03:05:31,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:05:31,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 03:05:31,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:05:31,697 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:05:31,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 166 flow [2022-11-23 03:05:31,788 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-11-23 03:05:31,788 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:05:31,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 03:05:31,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 166 flow [2022-11-23 03:05:31,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 76 transitions, 158 flow [2022-11-23 03:05:31,804 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:05:31,821 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 76 transitions, 158 flow [2022-11-23 03:05:31,824 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 76 transitions, 158 flow [2022-11-23 03:05:31,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 158 flow [2022-11-23 03:05:31,853 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-11-23 03:05:31,854 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:05:31,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 03:05:31,862 INFO L119 LiptonReduction]: Number of co-enabled transitions 1298 [2022-11-23 03:05:35,254 INFO L134 LiptonReduction]: Checked pairs total: 1170 [2022-11-23 03:05:35,258 INFO L136 LiptonReduction]: Total number of compositions: 76 [2022-11-23 03:05:35,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:05:35,287 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;@8532722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:05:35,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-23 03:05:35,289 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-23 03:05:35,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:05:35,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:35,290 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 03:05:35,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:35,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:35,296 INFO L85 PathProgramCache]: Analyzing trace with hash 307, now seen corresponding path program 1 times [2022-11-23 03:05:35,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:35,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450642200] [2022-11-23 03:05:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:35,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:35,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:35,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450642200] [2022-11-23 03:05:35,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450642200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:35,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:35,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 03:05:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897027870] [2022-11-23 03:05:35,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:35,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:05:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:35,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:05:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:05:35,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 154 [2022-11-23 03:05:35,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:35,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:35,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 154 [2022-11-23 03:05:35,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:35,592 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2022-11-23 03:05:35,593 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:05:35,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 459 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2022-11-23 03:05:35,598 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2022-11-23 03:05:35,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2022-11-23 03:05:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:05:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:05:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 164 transitions. [2022-11-23 03:05:35,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5324675324675324 [2022-11-23 03:05:35,619 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 164 transitions. [2022-11-23 03:05:35,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 164 transitions. [2022-11-23 03:05:35,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:35,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 164 transitions. [2022-11-23 03:05:35,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 82.0) internal successors, (164), 2 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:35,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:35,642 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:35,644 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 164 transitions. [2022-11-23 03:05:35,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2022-11-23 03:05:35,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:05:35,651 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2022-11-23 03:05:35,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-11-23 03:05:35,658 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 03:05:35,659 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2022-11-23 03:05:35,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:35,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:35,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:05:35,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:05:35,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:35,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:35,675 INFO L85 PathProgramCache]: Analyzing trace with hash 300586, now seen corresponding path program 1 times [2022-11-23 03:05:35,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:35,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200174244] [2022-11-23 03:05:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:35,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:35,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200174244] [2022-11-23 03:05:35,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200174244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:35,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:35,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:05:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885994416] [2022-11-23 03:05:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:35,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:05:35,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:35,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:05:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:05:36,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:36,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:36,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:36,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:36,117 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2022-11-23 03:05:36,118 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:05:36,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 356 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2022-11-23 03:05:36,121 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-11-23 03:05:36,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2022-11-23 03:05:36,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:05:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:05:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-11-23 03:05:36,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2022-11-23 03:05:36,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-11-23 03:05:36,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-11-23 03:05:36,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:36,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-11-23 03:05:36,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,136 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 217 transitions. [2022-11-23 03:05:36,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2022-11-23 03:05:36,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:05:36,138 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2022-11-23 03:05:36,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-11-23 03:05:36,139 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 03:05:36,139 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2022-11-23 03:05:36,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:36,141 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:05:36,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:05:36,141 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:36,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:36,145 INFO L85 PathProgramCache]: Analyzing trace with hash 300587, now seen corresponding path program 1 times [2022-11-23 03:05:36,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:36,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118413946] [2022-11-23 03:05:36,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:36,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:36,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118413946] [2022-11-23 03:05:36,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118413946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:36,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:36,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:05:36,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598180910] [2022-11-23 03:05:36,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:36,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:05:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:05:36,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:05:36,348 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 154 [2022-11-23 03:05:36,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:36,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 154 [2022-11-23 03:05:36,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:36,403 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2022-11-23 03:05:36,404 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 03:05:36,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 332 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2022-11-23 03:05:36,405 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-11-23 03:05:36,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2022-11-23 03:05:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:05:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:05:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2022-11-23 03:05:36,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.487012987012987 [2022-11-23 03:05:36,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2022-11-23 03:05:36,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2022-11-23 03:05:36,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:36,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2022-11-23 03:05:36,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,412 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 225 transitions. [2022-11-23 03:05:36,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2022-11-23 03:05:36,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:05:36,413 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-11-23 03:05:36,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-11-23 03:05:36,414 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2022-11-23 03:05:36,415 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-11-23 03:05:36,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:36,415 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:05:36,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:05:36,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash 365082317, now seen corresponding path program 1 times [2022-11-23 03:05:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:36,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99190130] [2022-11-23 03:05:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:36,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:36,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99190130] [2022-11-23 03:05:36,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99190130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:36,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:36,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:05:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586459187] [2022-11-23 03:05:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:36,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:05:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:05:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:05:36,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 154 [2022-11-23 03:05:36,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:36,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 154 [2022-11-23 03:05:36,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:36,685 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2022-11-23 03:05:36,685 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-23 03:05:36,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 886 event pairs, 12 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2022-11-23 03:05:36,688 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2022-11-23 03:05:36,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2022-11-23 03:05:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:05:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:05:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2022-11-23 03:05:36,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4818181818181818 [2022-11-23 03:05:36,691 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2022-11-23 03:05:36,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2022-11-23 03:05:36,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:36,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2022-11-23 03:05:36,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,696 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 154.0) internal successors, (924), 6 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,696 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 371 transitions. [2022-11-23 03:05:36,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2022-11-23 03:05:36,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:05:36,699 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2022-11-23 03:05:36,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2022-11-23 03:05:36,700 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2022-11-23 03:05:36,700 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2022-11-23 03:05:36,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,701 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:36,701 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:36,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:05:36,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:36,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:36,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1567349600, now seen corresponding path program 1 times [2022-11-23 03:05:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:36,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893152233] [2022-11-23 03:05:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:36,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:36,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:36,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893152233] [2022-11-23 03:05:36,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893152233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:36,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:36,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:05:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052966683] [2022-11-23 03:05:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:36,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:05:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:05:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:05:36,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2022-11-23 03:05:36,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:36,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:36,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2022-11-23 03:05:36,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:37,010 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2022-11-23 03:05:37,011 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-23 03:05:37,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 619 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2022-11-23 03:05:37,015 INFO L137 encePairwiseOnDemand]: 151/154 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2022-11-23 03:05:37,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2022-11-23 03:05:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:05:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:05:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2022-11-23 03:05:37,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2022-11-23 03:05:37,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2022-11-23 03:05:37,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2022-11-23 03:05:37,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:37,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2022-11-23 03:05:37,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,020 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,020 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 272 transitions. [2022-11-23 03:05:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2022-11-23 03:05:37,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:05:37,025 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2022-11-23 03:05:37,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-11-23 03:05:37,027 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2022-11-23 03:05:37,027 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2022-11-23 03:05:37,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:37,028 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:37,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:05:37,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:37,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1333216361, now seen corresponding path program 1 times [2022-11-23 03:05:37,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:37,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999442231] [2022-11-23 03:05:37,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:37,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:37,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999442231] [2022-11-23 03:05:37,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999442231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:37,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:37,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:05:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394358952] [2022-11-23 03:05:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:37,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:05:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:37,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:05:37,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:05:37,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:37,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:37,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:37,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:37,314 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2022-11-23 03:05:37,314 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-23 03:05:37,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 437 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2022-11-23 03:05:37,315 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2022-11-23 03:05:37,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2022-11-23 03:05:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:05:37,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:05:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2022-11-23 03:05:37,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46266233766233766 [2022-11-23 03:05:37,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 285 transitions. [2022-11-23 03:05:37,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 285 transitions. [2022-11-23 03:05:37,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:37,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 285 transitions. [2022-11-23 03:05:37,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,322 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 154.0) internal successors, (770), 5 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,322 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 285 transitions. [2022-11-23 03:05:37,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2022-11-23 03:05:37,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:05:37,326 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2022-11-23 03:05:37,326 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2022-11-23 03:05:37,328 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2022-11-23 03:05:37,328 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2022-11-23 03:05:37,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,329 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:37,329 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:37,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:05:37,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:37,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1344083349, now seen corresponding path program 1 times [2022-11-23 03:05:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:37,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150704433] [2022-11-23 03:05:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:37,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:37,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150704433] [2022-11-23 03:05:37,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150704433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:37,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:37,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:05:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156780163] [2022-11-23 03:05:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:05:37,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:05:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:05:37,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:37,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:37,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:37,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:37,548 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2022-11-23 03:05:37,549 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2022-11-23 03:05:37,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 721 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2022-11-23 03:05:37,551 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2022-11-23 03:05:37,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2022-11-23 03:05:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:05:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:05:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2022-11-23 03:05:37,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2022-11-23 03:05:37,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2022-11-23 03:05:37,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2022-11-23 03:05:37,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:37,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2022-11-23 03:05:37,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 154.0) internal successors, (1078), 7 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,557 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 428 transitions. [2022-11-23 03:05:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2022-11-23 03:05:37,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-11-23 03:05:37,560 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2022-11-23 03:05:37,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2022-11-23 03:05:37,561 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2022-11-23 03:05:37,562 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2022-11-23 03:05:37,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:37,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:37,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:05:37,563 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:37,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:37,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1344054519, now seen corresponding path program 2 times [2022-11-23 03:05:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:37,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104402032] [2022-11-23 03:05:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:37,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:37,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104402032] [2022-11-23 03:05:37,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104402032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:37,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:37,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:05:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589146447] [2022-11-23 03:05:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:37,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:05:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:05:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:05:37,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:37,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:37,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:37,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:37,809 INFO L130 PetriNetUnfolder]: 132/231 cut-off events. [2022-11-23 03:05:37,810 INFO L131 PetriNetUnfolder]: For 553/553 co-relation queries the response was YES. [2022-11-23 03:05:37,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 893 conditions, 231 events. 132/231 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 750 event pairs, 31 based on Foata normal form. 10/241 useless extension candidates. Maximal degree in co-relation 879. Up to 99 conditions per place. [2022-11-23 03:05:37,812 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 30 selfloop transitions, 15 changer transitions 8/53 dead transitions. [2022-11-23 03:05:37,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 423 flow [2022-11-23 03:05:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:05:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:05:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 497 transitions. [2022-11-23 03:05:37,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2022-11-23 03:05:37,818 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 497 transitions. [2022-11-23 03:05:37,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 497 transitions. [2022-11-23 03:05:37,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:37,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 497 transitions. [2022-11-23 03:05:37,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,824 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 7 states and 497 transitions. [2022-11-23 03:05:37,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 423 flow [2022-11-23 03:05:37,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 399 flow, removed 12 selfloop flow, removed 0 redundant places. [2022-11-23 03:05:37,832 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 278 flow [2022-11-23 03:05:37,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=278, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2022-11-23 03:05:37,834 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 22 predicate places. [2022-11-23 03:05:37,835 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 278 flow [2022-11-23 03:05:37,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:37,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:37,835 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 03:05:37,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:37,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1369801847, now seen corresponding path program 1 times [2022-11-23 03:05:37,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:37,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018619820] [2022-11-23 03:05:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:37,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:37,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018619820] [2022-11-23 03:05:37,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018619820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:37,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:37,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:05:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049457751] [2022-11-23 03:05:37,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:37,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:05:37,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:05:37,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:05:38,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:38,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:38,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:38,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:38,221 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2022-11-23 03:05:38,221 INFO L131 PetriNetUnfolder]: For 1095/1095 co-relation queries the response was YES. [2022-11-23 03:05:38,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 295 events. 168/295 cut-off events. For 1095/1095 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1025 event pairs, 20 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1234. Up to 79 conditions per place. [2022-11-23 03:05:38,224 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 37 selfloop transitions, 22 changer transitions 3/62 dead transitions. [2022-11-23 03:05:38,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 556 flow [2022-11-23 03:05:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:05:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 03:05:38,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2022-11-23 03:05:38,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4594155844155844 [2022-11-23 03:05:38,227 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2022-11-23 03:05:38,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2022-11-23 03:05:38,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:38,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2022-11-23 03:05:38,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,231 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 154.0) internal successors, (1386), 9 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,231 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 278 flow. Second operand 8 states and 566 transitions. [2022-11-23 03:05:38,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 556 flow [2022-11-23 03:05:38,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 524 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-11-23 03:05:38,238 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 390 flow [2022-11-23 03:05:38,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2022-11-23 03:05:38,239 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2022-11-23 03:05:38,239 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 390 flow [2022-11-23 03:05:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,242 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:38,242 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 03:05:38,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1321511597, now seen corresponding path program 2 times [2022-11-23 03:05:38,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:38,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882749410] [2022-11-23 03:05:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:38,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:38,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:38,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882749410] [2022-11-23 03:05:38,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882749410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:05:38,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:05:38,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:05:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139614540] [2022-11-23 03:05:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:05:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:05:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:05:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:05:38,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:38,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:38,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:38,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:38,561 INFO L130 PetriNetUnfolder]: 160/283 cut-off events. [2022-11-23 03:05:38,561 INFO L131 PetriNetUnfolder]: For 1704/1704 co-relation queries the response was YES. [2022-11-23 03:05:38,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 283 events. 160/283 cut-off events. For 1704/1704 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1003 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1348. Up to 69 conditions per place. [2022-11-23 03:05:38,564 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2022-11-23 03:05:38,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 634 flow [2022-11-23 03:05:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:05:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:05:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2022-11-23 03:05:38,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2022-11-23 03:05:38,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2022-11-23 03:05:38,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2022-11-23 03:05:38,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:38,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2022-11-23 03:05:38,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,571 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 154.0) internal successors, (1232), 8 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,571 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 390 flow. Second operand 7 states and 495 transitions. [2022-11-23 03:05:38,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 634 flow [2022-11-23 03:05:38,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 580 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-11-23 03:05:38,582 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 430 flow [2022-11-23 03:05:38,583 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2022-11-23 03:05:38,583 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2022-11-23 03:05:38,583 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 430 flow [2022-11-23 03:05:38,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:38,584 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:38,584 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:38,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 03:05:38,584 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1982837205, now seen corresponding path program 3 times [2022-11-23 03:05:38,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:38,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006736744] [2022-11-23 03:05:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:38,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:38,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:38,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:38,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006736744] [2022-11-23 03:05:38,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006736744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:38,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947653174] [2022-11-23 03:05:38,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:05:38,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:38,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:38,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:38,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:05:38,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 03:05:38,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:05:38,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 03:05:38,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:38,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:39,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947653174] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:39,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:39,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-23 03:05:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011074978] [2022-11-23 03:05:39,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:39,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:05:39,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:39,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:05:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:05:39,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:39,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 66.91666666666667) internal successors, (803), 12 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:39,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:39,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:39,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:39,559 INFO L130 PetriNetUnfolder]: 208/363 cut-off events. [2022-11-23 03:05:39,559 INFO L131 PetriNetUnfolder]: For 2799/2799 co-relation queries the response was YES. [2022-11-23 03:05:39,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 363 events. 208/363 cut-off events. For 2799/2799 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1294 event pairs, 10 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1850. Up to 91 conditions per place. [2022-11-23 03:05:39,565 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 36 selfloop transitions, 39 changer transitions 26/101 dead transitions. [2022-11-23 03:05:39,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 1074 flow [2022-11-23 03:05:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:05:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 03:05:39,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1127 transitions. [2022-11-23 03:05:39,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45738636363636365 [2022-11-23 03:05:39,570 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1127 transitions. [2022-11-23 03:05:39,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1127 transitions. [2022-11-23 03:05:39,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:39,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1127 transitions. [2022-11-23 03:05:39,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 70.4375) internal successors, (1127), 16 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:39,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:39,582 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:39,582 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 430 flow. Second operand 16 states and 1127 transitions. [2022-11-23 03:05:39,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 1074 flow [2022-11-23 03:05:39,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 1007 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-11-23 03:05:39,600 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 753 flow [2022-11-23 03:05:39,601 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=753, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2022-11-23 03:05:39,601 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 49 predicate places. [2022-11-23 03:05:39,602 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 753 flow [2022-11-23 03:05:39,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 66.91666666666667) internal successors, (803), 12 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:39,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:39,603 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:39,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:05:39,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 03:05:39,811 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash -132555807, now seen corresponding path program 4 times [2022-11-23 03:05:39,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:39,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638284678] [2022-11-23 03:05:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:40,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:40,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638284678] [2022-11-23 03:05:40,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638284678] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:40,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909479921] [2022-11-23 03:05:40,007 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:05:40,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:40,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:40,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:05:40,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:05:40,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:05:40,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:05:40,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:40,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:40,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909479921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:40,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:40,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-23 03:05:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307260581] [2022-11-23 03:05:40,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:40,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 03:05:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 03:05:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-23 03:05:40,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:40,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 753 flow. Second operand has 16 states, 16 states have (on average 66.8125) internal successors, (1069), 16 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:40,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:40,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:40,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:40,809 INFO L130 PetriNetUnfolder]: 264/475 cut-off events. [2022-11-23 03:05:40,809 INFO L131 PetriNetUnfolder]: For 5413/5413 co-relation queries the response was YES. [2022-11-23 03:05:40,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2711 conditions, 475 events. 264/475 cut-off events. For 5413/5413 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1724 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2684. Up to 249 conditions per place. [2022-11-23 03:05:40,815 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2022-11-23 03:05:40,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1571 flow [2022-11-23 03:05:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:05:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 03:05:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1123 transitions. [2022-11-23 03:05:40,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.455762987012987 [2022-11-23 03:05:40,819 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1123 transitions. [2022-11-23 03:05:40,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1123 transitions. [2022-11-23 03:05:40,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:40,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1123 transitions. [2022-11-23 03:05:40,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 70.1875) internal successors, (1123), 16 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:40,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:40,828 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 154.0) internal successors, (2618), 17 states have internal predecessors, (2618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:40,829 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 753 flow. Second operand 16 states and 1123 transitions. [2022-11-23 03:05:40,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1571 flow [2022-11-23 03:05:40,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1183 flow, removed 177 selfloop flow, removed 7 redundant places. [2022-11-23 03:05:40,856 INFO L231 Difference]: Finished difference. Result has 91 places, 71 transitions, 832 flow [2022-11-23 03:05:40,856 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=832, PETRI_PLACES=91, PETRI_TRANSITIONS=71} [2022-11-23 03:05:40,857 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 67 predicate places. [2022-11-23 03:05:40,857 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 71 transitions, 832 flow [2022-11-23 03:05:40,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.8125) internal successors, (1069), 16 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:40,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:40,858 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:40,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:05:41,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:41,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash 612146691, now seen corresponding path program 5 times [2022-11-23 03:05:41,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:41,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245485002] [2022-11-23 03:05:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:41,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:41,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:41,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245485002] [2022-11-23 03:05:41,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245485002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:41,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081138045] [2022-11-23 03:05:41,257 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:05:41,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:41,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:41,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:41,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:05:41,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-23 03:05:41,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:05:41,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:05:41,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:41,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:41,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081138045] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:41,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:41,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-23 03:05:41,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36362349] [2022-11-23 03:05:41,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:41,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:05:41,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:41,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:05:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:05:41,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:41,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 71 transitions, 832 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:41,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:41,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:41,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:42,415 INFO L130 PetriNetUnfolder]: 418/767 cut-off events. [2022-11-23 03:05:42,416 INFO L131 PetriNetUnfolder]: For 14573/14573 co-relation queries the response was YES. [2022-11-23 03:05:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4388 conditions, 767 events. 418/767 cut-off events. For 14573/14573 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3423 event pairs, 44 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4352. Up to 230 conditions per place. [2022-11-23 03:05:42,424 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2022-11-23 03:05:42,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 183 transitions, 2224 flow [2022-11-23 03:05:42,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 03:05:42,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-23 03:05:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1544 transitions. [2022-11-23 03:05:42,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4557260920897285 [2022-11-23 03:05:42,432 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1544 transitions. [2022-11-23 03:05:42,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1544 transitions. [2022-11-23 03:05:42,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:42,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1544 transitions. [2022-11-23 03:05:42,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 70.18181818181819) internal successors, (1544), 22 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:42,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:42,446 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 154.0) internal successors, (3542), 23 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:42,446 INFO L175 Difference]: Start difference. First operand has 91 places, 71 transitions, 832 flow. Second operand 22 states and 1544 transitions. [2022-11-23 03:05:42,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 183 transitions, 2224 flow [2022-11-23 03:05:42,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 183 transitions, 2083 flow, removed 61 selfloop flow, removed 4 redundant places. [2022-11-23 03:05:42,523 INFO L231 Difference]: Finished difference. Result has 122 places, 109 transitions, 1563 flow [2022-11-23 03:05:42,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1563, PETRI_PLACES=122, PETRI_TRANSITIONS=109} [2022-11-23 03:05:42,524 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 98 predicate places. [2022-11-23 03:05:42,524 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 109 transitions, 1563 flow [2022-11-23 03:05:42,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:42,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:42,525 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:42,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:05:42,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:42,736 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:42,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1496503201, now seen corresponding path program 6 times [2022-11-23 03:05:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:42,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52972870] [2022-11-23 03:05:42,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:42,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:42,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52972870] [2022-11-23 03:05:42,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52972870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:42,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503364230] [2022-11-23 03:05:42,930 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:05:42,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:42,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:42,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:42,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:05:43,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-23 03:05:43,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:05:43,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:05:43,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:43,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:43,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503364230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:43,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:43,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-23 03:05:43,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210878500] [2022-11-23 03:05:43,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:43,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 03:05:43,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:43,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 03:05:43,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:05:43,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:43,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 109 transitions, 1563 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:43,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:43,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:43,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:44,212 INFO L130 PetriNetUnfolder]: 582/1047 cut-off events. [2022-11-23 03:05:44,213 INFO L131 PetriNetUnfolder]: For 36458/36458 co-relation queries the response was YES. [2022-11-23 03:05:44,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7691 conditions, 1047 events. 582/1047 cut-off events. For 36458/36458 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4901 event pairs, 20 based on Foata normal form. 32/1079 useless extension candidates. Maximal degree in co-relation 7640. Up to 330 conditions per place. [2022-11-23 03:05:44,228 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 61 selfloop transitions, 129 changer transitions 48/238 dead transitions. [2022-11-23 03:05:44,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 238 transitions, 3789 flow [2022-11-23 03:05:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 03:05:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-23 03:05:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1895 transitions. [2022-11-23 03:05:44,236 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45574795574795574 [2022-11-23 03:05:44,237 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1895 transitions. [2022-11-23 03:05:44,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1895 transitions. [2022-11-23 03:05:44,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:44,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1895 transitions. [2022-11-23 03:05:44,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 70.18518518518519) internal successors, (1895), 27 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:44,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 154.0) internal successors, (4312), 28 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:44,260 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 154.0) internal successors, (4312), 28 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:44,260 INFO L175 Difference]: Start difference. First operand has 122 places, 109 transitions, 1563 flow. Second operand 27 states and 1895 transitions. [2022-11-23 03:05:44,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 238 transitions, 3789 flow [2022-11-23 03:05:44,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 238 transitions, 3446 flow, removed 163 selfloop flow, removed 4 redundant places. [2022-11-23 03:05:44,436 INFO L231 Difference]: Finished difference. Result has 159 places, 151 transitions, 2585 flow [2022-11-23 03:05:44,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2585, PETRI_PLACES=159, PETRI_TRANSITIONS=151} [2022-11-23 03:05:44,436 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 135 predicate places. [2022-11-23 03:05:44,437 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 151 transitions, 2585 flow [2022-11-23 03:05:44,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:44,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:44,437 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:44,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:05:44,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-23 03:05:44,648 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:44,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:44,649 INFO L85 PathProgramCache]: Analyzing trace with hash -437389585, now seen corresponding path program 7 times [2022-11-23 03:05:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:44,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558379222] [2022-11-23 03:05:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:44,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:44,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:44,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558379222] [2022-11-23 03:05:44,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558379222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:44,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408055187] [2022-11-23 03:05:44,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:05:44,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:44,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:44,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:44,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:05:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:45,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 03:05:45,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:45,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:05:45,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408055187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:45,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:45,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-23 03:05:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505323317] [2022-11-23 03:05:45,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 03:05:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:45,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 03:05:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-11-23 03:05:45,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:45,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 151 transitions, 2585 flow. Second operand has 25 states, 25 states have (on average 66.44) internal successors, (1661), 25 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:45,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:45,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:45,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:46,973 INFO L130 PetriNetUnfolder]: 814/1447 cut-off events. [2022-11-23 03:05:46,973 INFO L131 PetriNetUnfolder]: For 87944/87944 co-relation queries the response was YES. [2022-11-23 03:05:46,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13712 conditions, 1447 events. 814/1447 cut-off events. For 87944/87944 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6625 event pairs, 26 based on Foata normal form. 40/1487 useless extension candidates. Maximal degree in co-relation 13645. Up to 485 conditions per place. [2022-11-23 03:05:46,999 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 69 selfloop transitions, 184 changer transitions 70/323 dead transitions. [2022-11-23 03:05:46,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 323 transitions, 7008 flow [2022-11-23 03:05:47,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-23 03:05:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-23 03:05:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2658 transitions. [2022-11-23 03:05:47,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45420369104579633 [2022-11-23 03:05:47,006 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2658 transitions. [2022-11-23 03:05:47,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2658 transitions. [2022-11-23 03:05:47,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:47,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2658 transitions. [2022-11-23 03:05:47,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 69.94736842105263) internal successors, (2658), 38 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:47,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 154.0) internal successors, (6006), 39 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:47,024 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 154.0) internal successors, (6006), 39 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:47,025 INFO L175 Difference]: Start difference. First operand has 159 places, 151 transitions, 2585 flow. Second operand 38 states and 2658 transitions. [2022-11-23 03:05:47,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 323 transitions, 7008 flow [2022-11-23 03:05:47,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 323 transitions, 5417 flow, removed 770 selfloop flow, removed 10 redundant places. [2022-11-23 03:05:47,282 INFO L231 Difference]: Finished difference. Result has 206 places, 212 transitions, 3802 flow [2022-11-23 03:05:47,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1982, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3802, PETRI_PLACES=206, PETRI_TRANSITIONS=212} [2022-11-23 03:05:47,283 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 182 predicate places. [2022-11-23 03:05:47,283 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 212 transitions, 3802 flow [2022-11-23 03:05:47,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 66.44) internal successors, (1661), 25 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:47,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:47,284 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:47,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:05:47,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 03:05:47,491 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:47,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:47,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1451304353, now seen corresponding path program 8 times [2022-11-23 03:05:47,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:47,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529399419] [2022-11-23 03:05:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:48,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:48,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529399419] [2022-11-23 03:05:48,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529399419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:48,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203808335] [2022-11-23 03:05:48,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:05:48,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:48,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:48,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:05:48,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:05:48,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:05:48,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:05:48,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:48,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:48,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203808335] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:48,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:48,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-23 03:05:48,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160293744] [2022-11-23 03:05:48,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:48,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 03:05:48,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 03:05:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 03:05:49,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:49,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 212 transitions, 3802 flow. Second operand has 40 states, 40 states have (on average 66.3) internal successors, (2652), 40 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:49,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:49,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:49,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:50,739 INFO L130 PetriNetUnfolder]: 934/1687 cut-off events. [2022-11-23 03:05:50,740 INFO L131 PetriNetUnfolder]: For 149410/149410 co-relation queries the response was YES. [2022-11-23 03:05:50,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17931 conditions, 1687 events. 934/1687 cut-off events. For 149410/149410 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7580 event pairs, 265 based on Foata normal form. 80/1767 useless extension candidates. Maximal degree in co-relation 17845. Up to 1189 conditions per place. [2022-11-23 03:05:50,787 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 227 selfloop transitions, 61 changer transitions 75/363 dead transitions. [2022-11-23 03:05:50,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 363 transitions, 8454 flow [2022-11-23 03:05:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-23 03:05:50,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-23 03:05:50,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2791 transitions. [2022-11-23 03:05:50,842 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4530844155844156 [2022-11-23 03:05:50,842 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2791 transitions. [2022-11-23 03:05:50,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2791 transitions. [2022-11-23 03:05:50,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:50,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2791 transitions. [2022-11-23 03:05:50,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 69.775) internal successors, (2791), 40 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:50,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 154.0) internal successors, (6314), 41 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:50,865 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 154.0) internal successors, (6314), 41 states have internal predecessors, (6314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:50,865 INFO L175 Difference]: Start difference. First operand has 206 places, 212 transitions, 3802 flow. Second operand 40 states and 2791 transitions. [2022-11-23 03:05:50,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 363 transitions, 8454 flow [2022-11-23 03:05:51,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 363 transitions, 7150 flow, removed 626 selfloop flow, removed 6 redundant places. [2022-11-23 03:05:51,331 INFO L231 Difference]: Finished difference. Result has 261 places, 242 transitions, 4523 flow [2022-11-23 03:05:51,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4523, PETRI_PLACES=261, PETRI_TRANSITIONS=242} [2022-11-23 03:05:51,332 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 237 predicate places. [2022-11-23 03:05:51,332 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 242 transitions, 4523 flow [2022-11-23 03:05:51,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 66.3) internal successors, (2652), 40 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:51,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:51,334 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:51,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:05:51,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 03:05:51,539 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:51,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2071479491, now seen corresponding path program 9 times [2022-11-23 03:05:51,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:51,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324443612] [2022-11-23 03:05:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:51,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:52,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:52,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324443612] [2022-11-23 03:05:52,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324443612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:52,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081615922] [2022-11-23 03:05:52,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:05:52,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:52,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:52,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:52,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:05:52,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-23 03:05:52,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:05:52,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:05:52,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:52,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:52,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081615922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:52,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:52,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2022-11-23 03:05:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208693979] [2022-11-23 03:05:52,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:52,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-23 03:05:52,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:52,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-23 03:05:52,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 03:05:53,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:53,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 242 transitions, 4523 flow. Second operand has 41 states, 41 states have (on average 66.3170731707317) internal successors, (2719), 41 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:53,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:53,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:53,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:05:55,511 INFO L130 PetriNetUnfolder]: 1214/2247 cut-off events. [2022-11-23 03:05:55,512 INFO L131 PetriNetUnfolder]: For 375650/375650 co-relation queries the response was YES. [2022-11-23 03:05:55,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27889 conditions, 2247 events. 1214/2247 cut-off events. For 375650/375650 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10905 event pairs, 166 based on Foata normal form. 80/2327 useless extension candidates. Maximal degree in co-relation 27780. Up to 881 conditions per place. [2022-11-23 03:05:55,536 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 188 selfloop transitions, 186 changer transitions 87/461 dead transitions. [2022-11-23 03:05:55,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 461 transitions, 10830 flow [2022-11-23 03:05:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-23 03:05:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-23 03:05:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3212 transitions. [2022-11-23 03:05:55,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.453416149068323 [2022-11-23 03:05:55,545 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3212 transitions. [2022-11-23 03:05:55,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3212 transitions. [2022-11-23 03:05:55,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:05:55,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3212 transitions. [2022-11-23 03:05:55,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 69.82608695652173) internal successors, (3212), 46 states have internal predecessors, (3212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:55,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 154.0) internal successors, (7238), 47 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:55,565 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 154.0) internal successors, (7238), 47 states have internal predecessors, (7238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:55,565 INFO L175 Difference]: Start difference. First operand has 261 places, 242 transitions, 4523 flow. Second operand 46 states and 3212 transitions. [2022-11-23 03:05:55,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 461 transitions, 10830 flow [2022-11-23 03:05:56,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 461 transitions, 9671 flow, removed 552 selfloop flow, removed 14 redundant places. [2022-11-23 03:05:56,323 INFO L231 Difference]: Finished difference. Result has 312 places, 311 transitions, 6245 flow [2022-11-23 03:05:56,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6245, PETRI_PLACES=312, PETRI_TRANSITIONS=311} [2022-11-23 03:05:56,323 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 288 predicate places. [2022-11-23 03:05:56,323 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 311 transitions, 6245 flow [2022-11-23 03:05:56,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 66.3170731707317) internal successors, (2719), 41 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:56,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:05:56,324 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:05:56,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:05:56,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-23 03:05:56,530 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:05:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:05:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1095581321, now seen corresponding path program 10 times [2022-11-23 03:05:56,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:05:56,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495379994] [2022-11-23 03:05:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:05:56,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:05:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:05:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:57,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:05:57,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495379994] [2022-11-23 03:05:57,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495379994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:05:57,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620969396] [2022-11-23 03:05:57,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:05:57,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:05:57,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:05:57,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:05:57,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:05:57,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:05:57,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:05:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:05:57,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:05:57,226 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:57,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:05:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:05:57,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620969396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:05:57,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:05:57,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-23 03:05:57,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030034692] [2022-11-23 03:05:57,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:05:57,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 03:05:57,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:05:57,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 03:05:57,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 03:05:58,011 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:05:58,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 311 transitions, 6245 flow. Second operand has 40 states, 40 states have (on average 66.3) internal successors, (2652), 40 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:05:58,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:05:58,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:05:58,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:06:00,978 INFO L130 PetriNetUnfolder]: 1686/3191 cut-off events. [2022-11-23 03:06:00,979 INFO L131 PetriNetUnfolder]: For 869315/869315 co-relation queries the response was YES. [2022-11-23 03:06:01,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47921 conditions, 3191 events. 1686/3191 cut-off events. For 869315/869315 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17453 event pairs, 96 based on Foata normal form. 80/3271 useless extension candidates. Maximal degree in co-relation 47791. Up to 1337 conditions per place. [2022-11-23 03:06:01,075 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 143 selfloop transitions, 359 changer transitions 97/599 dead transitions. [2022-11-23 03:06:01,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 599 transitions, 15942 flow [2022-11-23 03:06:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-23 03:06:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-23 03:06:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3561 transitions. [2022-11-23 03:06:01,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45339954163483576 [2022-11-23 03:06:01,093 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3561 transitions. [2022-11-23 03:06:01,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3561 transitions. [2022-11-23 03:06:01,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:06:01,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3561 transitions. [2022-11-23 03:06:01,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 69.82352941176471) internal successors, (3561), 51 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:01,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 154.0) internal successors, (8008), 52 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:01,129 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 154.0) internal successors, (8008), 52 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:01,129 INFO L175 Difference]: Start difference. First operand has 312 places, 311 transitions, 6245 flow. Second operand 51 states and 3561 transitions. [2022-11-23 03:06:01,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 599 transitions, 15942 flow [2022-11-23 03:06:03,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 599 transitions, 13958 flow, removed 951 selfloop flow, removed 14 redundant places. [2022-11-23 03:06:03,559 INFO L231 Difference]: Finished difference. Result has 372 places, 434 transitions, 9536 flow [2022-11-23 03:06:03,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=4693, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=9536, PETRI_PLACES=372, PETRI_TRANSITIONS=434} [2022-11-23 03:06:03,560 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 348 predicate places. [2022-11-23 03:06:03,561 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 434 transitions, 9536 flow [2022-11-23 03:06:03,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 66.3) internal successors, (2652), 40 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:03,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:06:03,563 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:06:03,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:06:03,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-23 03:06:03,778 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:06:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:06:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash 615879711, now seen corresponding path program 11 times [2022-11-23 03:06:03,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:06:03,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244845656] [2022-11-23 03:06:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:06:03,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:06:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:06:04,186 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:06:04,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:06:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244845656] [2022-11-23 03:06:04,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244845656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:06:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228833600] [2022-11-23 03:06:04,186 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:06:04,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:06:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:06:04,190 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:06:04,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 03:06:04,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-23 03:06:04,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:06:04,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 03:06:04,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:06:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:06:04,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:06:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:06:04,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228833600] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:06:04,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:06:04,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-23 03:06:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496903672] [2022-11-23 03:06:04,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:06:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-23 03:06:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:06:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-23 03:06:04,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1270, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 03:06:04,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:06:04,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 434 transitions, 9536 flow. Second operand has 40 states, 40 states have (on average 66.3) internal successors, (2652), 40 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:04,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:06:04,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:06:04,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:06:09,264 INFO L130 PetriNetUnfolder]: 2270/4251 cut-off events. [2022-11-23 03:06:09,264 INFO L131 PetriNetUnfolder]: For 1770690/1770690 co-relation queries the response was YES. [2022-11-23 03:06:09,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77428 conditions, 4251 events. 2270/4251 cut-off events. For 1770690/1770690 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 24555 event pairs, 42 based on Foata normal form. 80/4331 useless extension candidates. Maximal degree in co-relation 77273. Up to 1813 conditions per place. [2022-11-23 03:06:09,350 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 128 selfloop transitions, 542 changer transitions 101/771 dead transitions. [2022-11-23 03:06:09,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 771 transitions, 23773 flow [2022-11-23 03:06:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-11-23 03:06:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2022-11-23 03:06:09,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4402 transitions. [2022-11-23 03:06:09,357 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4537208822923109 [2022-11-23 03:06:09,358 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4402 transitions. [2022-11-23 03:06:09,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4402 transitions. [2022-11-23 03:06:09,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:06:09,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4402 transitions. [2022-11-23 03:06:09,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 69.87301587301587) internal successors, (4402), 63 states have internal predecessors, (4402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:09,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 154.0) internal successors, (9856), 64 states have internal predecessors, (9856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:09,378 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 154.0) internal successors, (9856), 64 states have internal predecessors, (9856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:09,378 INFO L175 Difference]: Start difference. First operand has 372 places, 434 transitions, 9536 flow. Second operand 63 states and 4402 transitions. [2022-11-23 03:06:09,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 771 transitions, 23773 flow [2022-11-23 03:06:14,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 771 transitions, 18784 flow, removed 2416 selfloop flow, removed 17 redundant places. [2022-11-23 03:06:14,718 INFO L231 Difference]: Finished difference. Result has 448 places, 574 transitions, 13043 flow [2022-11-23 03:06:14,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6969, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=13043, PETRI_PLACES=448, PETRI_TRANSITIONS=574} [2022-11-23 03:06:14,719 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 424 predicate places. [2022-11-23 03:06:14,719 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 574 transitions, 13043 flow [2022-11-23 03:06:14,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 66.3) internal successors, (2652), 40 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:14,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:06:14,720 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:06:14,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 03:06:14,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:06:14,920 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:06:14,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:06:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1265400057, now seen corresponding path program 12 times [2022-11-23 03:06:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:06:14,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222197019] [2022-11-23 03:06:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:06:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:06:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:06:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:06:15,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:06:15,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222197019] [2022-11-23 03:06:15,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222197019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:06:15,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269207406] [2022-11-23 03:06:15,352 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:06:15,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:06:15,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:06:15,354 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:06:15,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 03:06:15,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-23 03:06:15,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:06:15,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 03:06:15,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:06:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:06:15,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:06:16,079 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:06:16,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269207406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:06:16,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:06:16,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2022-11-23 03:06:16,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369543223] [2022-11-23 03:06:16,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:06:16,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-23 03:06:16,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:06:16,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-23 03:06:16,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1305, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 03:06:16,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:06:16,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 574 transitions, 13043 flow. Second operand has 42 states, 42 states have (on average 66.30952380952381) internal successors, (2785), 42 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:16,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:06:16,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:06:16,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:06:22,255 INFO L130 PetriNetUnfolder]: 2694/5027 cut-off events. [2022-11-23 03:06:22,255 INFO L131 PetriNetUnfolder]: For 2264566/2264566 co-relation queries the response was YES. [2022-11-23 03:06:22,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101003 conditions, 5027 events. 2694/5027 cut-off events. For 2264566/2264566 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 28973 event pairs, 12 based on Foata normal form. 88/5115 useless extension candidates. Maximal degree in co-relation 100817. Up to 2153 conditions per place. [2022-11-23 03:06:22,370 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 117 selfloop transitions, 660 changer transitions 150/927 dead transitions. [2022-11-23 03:06:22,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 927 transitions, 34580 flow [2022-11-23 03:06:22,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-23 03:06:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-23 03:06:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 5452 transitions. [2022-11-23 03:06:22,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4538794538794539 [2022-11-23 03:06:22,382 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 5452 transitions. [2022-11-23 03:06:22,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 5452 transitions. [2022-11-23 03:06:22,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:06:22,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 5452 transitions. [2022-11-23 03:06:22,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 69.8974358974359) internal successors, (5452), 78 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:22,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 154.0) internal successors, (12166), 79 states have internal predecessors, (12166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:22,416 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 154.0) internal successors, (12166), 79 states have internal predecessors, (12166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:22,416 INFO L175 Difference]: Start difference. First operand has 448 places, 574 transitions, 13043 flow. Second operand 78 states and 5452 transitions. [2022-11-23 03:06:22,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 927 transitions, 34580 flow [2022-11-23 03:06:28,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 927 transitions, 26872 flow, removed 3655 selfloop flow, removed 25 redundant places. [2022-11-23 03:06:28,261 INFO L231 Difference]: Finished difference. Result has 539 places, 691 transitions, 17467 flow [2022-11-23 03:06:28,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=9499, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=17467, PETRI_PLACES=539, PETRI_TRANSITIONS=691} [2022-11-23 03:06:28,262 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 515 predicate places. [2022-11-23 03:06:28,262 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 691 transitions, 17467 flow [2022-11-23 03:06:28,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 66.30952380952381) internal successors, (2785), 42 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:28,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:06:28,263 INFO L209 CegarLoopForPetriNet]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:06:28,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 03:06:28,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-23 03:06:28,469 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:06:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:06:28,470 INFO L85 PathProgramCache]: Analyzing trace with hash 59239413, now seen corresponding path program 13 times [2022-11-23 03:06:28,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:06:28,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106332674] [2022-11-23 03:06:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:06:28,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:06:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:06:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:06:29,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:06:29,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106332674] [2022-11-23 03:06:29,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106332674] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:06:29,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920345034] [2022-11-23 03:06:29,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:06:29,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:06:29,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:06:29,550 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:06:29,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 03:06:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:06:29,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-23 03:06:29,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:06:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:06:29,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:06:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:06:30,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920345034] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:06:30,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 03:06:30,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 47 [2022-11-23 03:06:30,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030642911] [2022-11-23 03:06:30,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 03:06:30,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-23 03:06:30,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:06:30,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-23 03:06:30,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1818, Unknown=0, NotChecked=0, Total=2352 [2022-11-23 03:06:30,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 154 [2022-11-23 03:06:30,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 691 transitions, 17467 flow. Second operand has 49 states, 49 states have (on average 66.24489795918367) internal successors, (3246), 49 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:30,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:06:30,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 154 [2022-11-23 03:06:30,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:06:38,105 INFO L130 PetriNetUnfolder]: 2950/5455 cut-off events. [2022-11-23 03:06:38,105 INFO L131 PetriNetUnfolder]: For 3613490/3613490 co-relation queries the response was YES. [2022-11-23 03:06:38,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128377 conditions, 5455 events. 2950/5455 cut-off events. For 3613490/3613490 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 31159 event pairs, 18 based on Foata normal form. 28/5483 useless extension candidates. Maximal degree in co-relation 128152. Up to 2301 conditions per place. [2022-11-23 03:06:38,243 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 133 selfloop transitions, 724 changer transitions 170/1027 dead transitions. [2022-11-23 03:06:38,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 1027 transitions, 39996 flow [2022-11-23 03:06:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-23 03:06:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-23 03:06:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6134 transitions. [2022-11-23 03:06:38,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45262691853600945 [2022-11-23 03:06:38,253 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6134 transitions. [2022-11-23 03:06:38,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6134 transitions. [2022-11-23 03:06:38,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:06:38,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6134 transitions. [2022-11-23 03:06:38,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 69.70454545454545) internal successors, (6134), 88 states have internal predecessors, (6134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:38,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 154.0) internal successors, (13706), 89 states have internal predecessors, (13706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:38,281 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 154.0) internal successors, (13706), 89 states have internal predecessors, (13706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:38,282 INFO L175 Difference]: Start difference. First operand has 539 places, 691 transitions, 17467 flow. Second operand 88 states and 6134 transitions. [2022-11-23 03:06:38,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 1027 transitions, 39996 flow [2022-11-23 03:06:48,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 1027 transitions, 30690 flow, removed 4503 selfloop flow, removed 20 redundant places. [2022-11-23 03:06:48,799 INFO L231 Difference]: Finished difference. Result has 620 places, 755 transitions, 16617 flow [2022-11-23 03:06:48,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=12103, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=661, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=16617, PETRI_PLACES=620, PETRI_TRANSITIONS=755} [2022-11-23 03:06:48,800 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 596 predicate places. [2022-11-23 03:06:48,801 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 755 transitions, 16617 flow [2022-11-23 03:06:48,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 66.24489795918367) internal successors, (3246), 49 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:06:48,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:06:48,802 INFO L209 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:06:48,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 03:06:49,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-23 03:06:49,002 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:06:49,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:06:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash 854080343, now seen corresponding path program 14 times [2022-11-23 03:06:49,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:06:49,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899840646] [2022-11-23 03:06:49,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:06:49,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:06:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:06:49,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:06:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:06:49,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-23 03:06:49,112 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:06:49,113 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2022-11-23 03:06:49,115 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-23 03:06:49,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-11-23 03:06:49,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-23 03:06:49,116 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-23 03:06:49,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-23 03:06:49,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-23 03:06:49,117 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-23 03:06:49,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 03:06:49,118 INFO L444 BasicCegarLoop]: Path program histogram: [14, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 03:06:49,123 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:06:49,124 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:06:49,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:06:49 BasicIcfg [2022-11-23 03:06:49,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:06:49,197 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:06:49,197 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:06:49,197 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:06:49,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:31" (3/4) ... [2022-11-23 03:06:49,201 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:06:49,201 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:06:49,202 INFO L158 Benchmark]: Toolchain (without parser) took 78930.39ms. Allocated memory was 174.1MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 131.5MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-23 03:06:49,202 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 107.0MB. Free memory was 57.7MB in the beginning and 57.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:06:49,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 665.67ms. Allocated memory is still 174.1MB. Free memory was 131.3MB in the beginning and 111.8MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-23 03:06:49,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.02ms. Allocated memory is still 174.1MB. Free memory was 111.8MB in the beginning and 109.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:06:49,203 INFO L158 Benchmark]: Boogie Preprocessor took 31.86ms. Allocated memory is still 174.1MB. Free memory was 109.7MB in the beginning and 108.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:06:49,203 INFO L158 Benchmark]: RCFGBuilder took 553.14ms. Allocated memory is still 174.1MB. Free memory was 108.2MB in the beginning and 95.0MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 03:06:49,204 INFO L158 Benchmark]: TraceAbstraction took 77610.62ms. Allocated memory was 174.1MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 94.4MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-23 03:06:49,204 INFO L158 Benchmark]: Witness Printer took 4.60ms. Allocated memory is still 5.2GB. Free memory is still 3.8GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:06:49,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 107.0MB. Free memory was 57.7MB in the beginning and 57.6MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 665.67ms. Allocated memory is still 174.1MB. Free memory was 131.3MB in the beginning and 111.8MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.02ms. Allocated memory is still 174.1MB. Free memory was 111.8MB in the beginning and 109.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.86ms. Allocated memory is still 174.1MB. Free memory was 109.7MB in the beginning and 108.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 553.14ms. Allocated memory is still 174.1MB. Free memory was 108.2MB in the beginning and 95.0MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 77610.62ms. Allocated memory was 174.1MB in the beginning and 5.2GB in the end (delta: 5.0GB). Free memory was 94.4MB in the beginning and 3.8GB in the end (delta: -3.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 4.60ms. Allocated memory is still 5.2GB. Free memory is still 3.8GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 78 PlacesBefore, 24 PlacesAfterwards, 76 TransitionsBefore, 20 TransitionsAfterwards, 1298 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 76 TotalNumberOfCompositions, 1170 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 979, independent: 952, independent conditional: 0, independent unconditional: 952, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 830, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 830, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 16, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 979, independent: 138, independent conditional: 0, independent unconditional: 138, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 830, unknown conditional: 0, unknown unconditional: 830] , Statistics on independence cache: Total cache size (in pairs): 16, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, 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: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [#in~arg={0:0}, #in~argv={51:50}, argc=49, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6, unknown-#in~argc-unknown=49] [L696] 1 int k = 0; VAL [#in~arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={51:50}, arg={0:0}, argc=49, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7, unknown-#in~argc-unknown=49] [L704] 2 int k = 0; VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={51:50}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1, unknown-#in~argc-unknown=49] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=4, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=7, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=8, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=9, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=10] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=14, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=16, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={51:50}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, condI=0, condJ=1, i=45, id1={3:0}, id2={5:0}, j=46, k=20, k=20, unknown-#in~argc-unknown=49] - 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: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: 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. - UnprovableResult [Line: 713]: 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 5 procedures, 96 locations, 8 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: 77.4s, OverallIterations: 22, TraceHistogramMax: 20, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 58.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6899 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6701 mSDsluCounter, 1065 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1011 mSDsCounter, 774 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6029 IncrementalHoareTripleChecker+Invalid, 6803 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 774 mSolverCounterUnsat, 54 mSDtfsCounter, 6029 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1113 GetRequests, 287 SyntacticMatches, 35 SemanticMatches, 791 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20190 ImplicationChecksByTransitivity, 16.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17467occurred in iteration=20, InterpolantAutomatonStates: 534, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 602 NumberOfCodeBlocks, 601 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 756 ConstructedInterpolants, 0 QuantifiedInterpolants, 3449 SizeOfPredicates, 149 NumberOfNonLiveVariables, 2045 ConjunctsInSsa, 216 ConjunctsInUnsatCore, 43 InterpolantComputations, 10 PerfectInterpolantSequences, 24/2151 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 [2022-11-23 03:06:49,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS --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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 03:06:51,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:06:51,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:06:51,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:06:51,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:06:51,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:06:51,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:06:51,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:06:51,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:06:51,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:06:51,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:06:51,892 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:06:51,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:06:51,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:06:51,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:06:51,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:06:51,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:06:51,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:06:51,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:06:51,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:06:51,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:06:51,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:06:51,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:06:51,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:06:51,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:06:51,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:06:51,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:06:51,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:06:51,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:06:51,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:06:51,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:06:51,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:06:51,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:06:51,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:06:51,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:06:51,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:06:51,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:06:51,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:06:51,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:06:51,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:06:51,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:06:51,940 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-23 03:06:51,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:06:51,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:06:51,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:06:51,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:06:51,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:06:51,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:06:51,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:06:51,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:06:51,971 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:06:51,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:06:51,971 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:06:51,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 03:06:51,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:06:51,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:06:51,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:06:51,973 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 03:06:51,973 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 03:06:51,973 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 03:06:51,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:06:51,974 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 03:06:51,974 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 03:06:51,975 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 03:06:51,975 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:06:51,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:06:51,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:06:51,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:06:51,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:06:51,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:06:51,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:06:51,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:06:51,978 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 03:06:51,978 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 03:06:51,978 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:06:51,979 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:06:51,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:06:51,979 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 03:06:51,980 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_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2022-11-23 03:06:52,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:06:52,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:06:52,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:06:52,374 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:06:52,375 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:06:52,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-23 03:06:55,471 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:06:55,772 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:06:55,773 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-23 03:06:55,788 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data/aeaf441cd/4fb9f6ea2b6145658cf22d89b0b21cc3/FLAG932fa90d3 [2022-11-23 03:06:55,805 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/data/aeaf441cd/4fb9f6ea2b6145658cf22d89b0b21cc3 [2022-11-23 03:06:55,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:06:55,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:06:55,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:06:55,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:06:55,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:06:55,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:55" (1/1) ... [2022-11-23 03:06:55,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565ac421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:55, skipping insertion in model container [2022-11-23 03:06:55,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:55" (1/1) ... [2022-11-23 03:06:55,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:06:55,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:06:56,321 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_eb866d99-5e2d-4197-8c3f-9f10d2dede40/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-23 03:06:56,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:06:56,339 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:06:56,393 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_eb866d99-5e2d-4197-8c3f-9f10d2dede40/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-23 03:06:56,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:06:56,482 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:06:56,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56 WrapperNode [2022-11-23 03:06:56,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:06:56,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:06:56,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:06:56,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:06:56,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,556 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2022-11-23 03:06:56,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:06:56,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:06:56,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:06:56,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:06:56,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,622 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:06:56,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:06:56,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:06:56,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:06:56,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (1/1) ... [2022-11-23 03:06:56,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:06:56,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:06:56,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:06:56,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:06:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-23 03:06:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-23 03:06:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-23 03:06:56,731 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-23 03:06:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:06:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:06:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:06:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:06:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 03:06:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 03:06:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:06:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:06:56,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:06:56,735 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:06:56,977 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:06:56,980 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:06:57,196 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:06:57,204 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:06:57,204 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 03:06:57,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:57 BoogieIcfgContainer [2022-11-23 03:06:57,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:06:57,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:06:57,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:06:57,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:06:57,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:06:55" (1/3) ... [2022-11-23 03:06:57,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c498928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:57, skipping insertion in model container [2022-11-23 03:06:57,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:56" (2/3) ... [2022-11-23 03:06:57,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c498928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:06:57, skipping insertion in model container [2022-11-23 03:06:57,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:57" (3/3) ... [2022-11-23 03:06:57,217 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-11-23 03:06:57,239 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:06:57,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-23 03:06:57,240 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:06:57,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-23 03:06:57,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 168 flow [2022-11-23 03:06:57,424 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-23 03:06:57,424 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:06:57,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 03:06:57,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 168 flow [2022-11-23 03:06:57,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 160 flow [2022-11-23 03:06:57,438 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:06:57,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 77 transitions, 160 flow [2022-11-23 03:06:57,456 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 77 transitions, 160 flow [2022-11-23 03:06:57,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 160 flow [2022-11-23 03:06:57,481 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-23 03:06:57,481 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:06:57,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-11-23 03:06:57,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 1298 [2022-11-23 03:07:06,157 INFO L134 LiptonReduction]: Checked pairs total: 1189 [2022-11-23 03:07:06,158 INFO L136 LiptonReduction]: Total number of compositions: 81 [2022-11-23 03:07:06,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:07:06,182 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;@6a3559c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:07:06,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-23 03:07:06,184 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-23 03:07:06,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:07:06,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:06,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-23 03:07:06,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 314, now seen corresponding path program 1 times [2022-11-23 03:07:06,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:06,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995482986] [2022-11-23 03:07:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:06,207 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 [2022-11-23 03:07:06,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:06,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:06,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:06,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 03:07:06,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:06,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:06,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:06,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995482986] [2022-11-23 03:07:06,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995482986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:06,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:06,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-23 03:07:06,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316292714] [2022-11-23 03:07:06,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:06,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:07:06,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:07:06,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:07:06,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 160 [2022-11-23 03:07:06,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:06,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:06,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 160 [2022-11-23 03:07:06,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:06,464 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2022-11-23 03:07:06,464 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 03:07:06,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2022-11-23 03:07:06,468 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2022-11-23 03:07:06,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2022-11-23 03:07:06,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:07:06,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-23 03:07:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2022-11-23 03:07:06,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51875 [2022-11-23 03:07:06,496 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 166 transitions. [2022-11-23 03:07:06,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 166 transitions. [2022-11-23 03:07:06,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:06,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 166 transitions. [2022-11-23 03:07:06,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:06,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:06,547 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:06,549 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 166 transitions. [2022-11-23 03:07:06,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2022-11-23 03:07:06,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:07:06,554 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2022-11-23 03:07:06,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-11-23 03:07:06,559 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 03:07:06,574 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2022-11-23 03:07:06,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:06,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:06,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:07:06,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:06,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:06,777 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:06,777 INFO L85 PathProgramCache]: Analyzing trace with hash 310268, now seen corresponding path program 1 times [2022-11-23 03:07:06,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:06,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964134039] [2022-11-23 03:07:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:06,778 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 [2022-11-23 03:07:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:06,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:06,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:06,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 03:07:06,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:07,015 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 03:07:07,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-23 03:07:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:07,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:07,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:07,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964134039] [2022-11-23 03:07:07,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964134039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:07,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:07,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:07:07,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834216693] [2022-11-23 03:07:07,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:07,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:07,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:07,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:07,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 160 [2022-11-23 03:07:07,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:07,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 160 [2022-11-23 03:07:07,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:07,250 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2022-11-23 03:07:07,250 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:07:07,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 350 event pairs, 46 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 119 conditions per place. [2022-11-23 03:07:07,253 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-11-23 03:07:07,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2022-11-23 03:07:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:07:07,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2022-11-23 03:07:07,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47708333333333336 [2022-11-23 03:07:07,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2022-11-23 03:07:07,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2022-11-23 03:07:07,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:07,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2022-11-23 03:07:07,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,280 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,280 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 229 transitions. [2022-11-23 03:07:07,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2022-11-23 03:07:07,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:07:07,282 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2022-11-23 03:07:07,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-11-23 03:07:07,283 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-11-23 03:07:07,283 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2022-11-23 03:07:07,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:07,284 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-23 03:07:07,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:07,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:07,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:07,497 INFO L85 PathProgramCache]: Analyzing trace with hash 310269, now seen corresponding path program 1 times [2022-11-23 03:07:07,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:07,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933083922] [2022-11-23 03:07:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:07,498 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 [2022-11-23 03:07:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:07,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:07,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:07,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 03:07:07,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:07,631 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 03:07:07,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-23 03:07:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:07,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:07,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:07,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933083922] [2022-11-23 03:07:07,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933083922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:07,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:07,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 03:07:07,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694674964] [2022-11-23 03:07:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:07:07,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:07:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:07:07,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:07,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:07,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:07,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:07,827 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2022-11-23 03:07:07,835 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-23 03:07:07,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 333 event pairs, 32 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 298. Up to 86 conditions per place. [2022-11-23 03:07:07,838 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-11-23 03:07:07,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2022-11-23 03:07:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:07:07,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:07:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-11-23 03:07:07,846 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45625 [2022-11-23 03:07:07,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-11-23 03:07:07,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-11-23 03:07:07,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:07,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-11-23 03:07:07,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,857 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 219 transitions. [2022-11-23 03:07:07,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2022-11-23 03:07:07,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:07:07,859 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-11-23 03:07:07,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-11-23 03:07:07,860 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2022-11-23 03:07:07,863 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-11-23 03:07:07,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:07,864 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:07,864 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 03:07:07,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:08,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:08,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash 653520788, now seen corresponding path program 1 times [2022-11-23 03:07:08,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:08,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242831593] [2022-11-23 03:07:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:08,078 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 [2022-11-23 03:07:08,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:08,080 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:08,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:08,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:07:08,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:08,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:08,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:08,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242831593] [2022-11-23 03:07:08,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242831593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:08,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:08,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:07:08,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82243954] [2022-11-23 03:07:08,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:08,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:07:08,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:08,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:07:08,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:07:08,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 160 [2022-11-23 03:07:08,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:08,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:08,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 160 [2022-11-23 03:07:08,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:08,478 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2022-11-23 03:07:08,478 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-23 03:07:08,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 884 event pairs, 14 based on Foata normal form. 15/223 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2022-11-23 03:07:08,485 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2022-11-23 03:07:08,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2022-11-23 03:07:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:07:08,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:07:08,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2022-11-23 03:07:08,496 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46875 [2022-11-23 03:07:08,496 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2022-11-23 03:07:08,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2022-11-23 03:07:08,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:08,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2022-11-23 03:07:08,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:08,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:08,504 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:08,504 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 375 transitions. [2022-11-23 03:07:08,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2022-11-23 03:07:08,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:07:08,508 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2022-11-23 03:07:08,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2022-11-23 03:07:08,511 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2022-11-23 03:07:08,511 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2022-11-23 03:07:08,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:08,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:08,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:08,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:08,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:08,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1215691206, now seen corresponding path program 1 times [2022-11-23 03:07:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:08,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111062568] [2022-11-23 03:07:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:08,733 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 [2022-11-23 03:07:08,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:08,735 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:08,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:08,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 03:07:08,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:08,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:08,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:08,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:08,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111062568] [2022-11-23 03:07:08,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111062568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:08,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:08,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:07:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301541192] [2022-11-23 03:07:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:08,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 03:07:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 03:07:08,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 03:07:11,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:07:13,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:07:15,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-23 03:07:15,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 160 [2022-11-23 03:07:15,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:15,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 160 [2022-11-23 03:07:15,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:15,433 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2022-11-23 03:07:15,434 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-23 03:07:15,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 640 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2022-11-23 03:07:15,436 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2022-11-23 03:07:15,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2022-11-23 03:07:15,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 03:07:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-23 03:07:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2022-11-23 03:07:15,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-11-23 03:07:15,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 256 transitions. [2022-11-23 03:07:15,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 256 transitions. [2022-11-23 03:07:15,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:15,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 256 transitions. [2022-11-23 03:07:15,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,442 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,442 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 256 transitions. [2022-11-23 03:07:15,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2022-11-23 03:07:15,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:07:15,444 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2022-11-23 03:07:15,444 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-11-23 03:07:15,445 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2022-11-23 03:07:15,445 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2022-11-23 03:07:15,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:15,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:15,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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)] Ended with exit code 0 [2022-11-23 03:07:15,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:15,658 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:15,658 INFO L85 PathProgramCache]: Analyzing trace with hash 978233959, now seen corresponding path program 1 times [2022-11-23 03:07:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:15,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855270610] [2022-11-23 03:07:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:15,659 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 [2022-11-23 03:07:15,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:15,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:15,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:15,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:07:15,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:15,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:15,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:15,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855270610] [2022-11-23 03:07:15,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855270610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:15,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:15,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:15,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147200269] [2022-11-23 03:07:15,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:15,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:15,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:15,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:15,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:15,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:15,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:15,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:15,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:15,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:15,999 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2022-11-23 03:07:15,999 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2022-11-23 03:07:16,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 442 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2022-11-23 03:07:16,001 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2022-11-23 03:07:16,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2022-11-23 03:07:16,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:07:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:07:16,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2022-11-23 03:07:16,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4525 [2022-11-23 03:07:16,003 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2022-11-23 03:07:16,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2022-11-23 03:07:16,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:16,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2022-11-23 03:07:16,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,008 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,008 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 362 transitions. [2022-11-23 03:07:16,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2022-11-23 03:07:16,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 03:07:16,010 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2022-11-23 03:07:16,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2022-11-23 03:07:16,011 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2022-11-23 03:07:16,011 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2022-11-23 03:07:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:16,012 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:16,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:16,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:16,224 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:16,224 INFO L85 PathProgramCache]: Analyzing trace with hash 968224183, now seen corresponding path program 1 times [2022-11-23 03:07:16,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:16,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805155171] [2022-11-23 03:07:16,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:16,225 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 [2022-11-23 03:07:16,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:16,226 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:16,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (8)] Waiting until timeout for monitored process [2022-11-23 03:07:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:16,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:07:16,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:16,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:16,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:16,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805155171] [2022-11-23 03:07:16,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805155171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:16,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:16,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:16,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10424001] [2022-11-23 03:07:16,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:16,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:16,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:16,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:16,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:16,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:16,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:16,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:16,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:16,553 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2022-11-23 03:07:16,553 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2022-11-23 03:07:16,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 724 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2022-11-23 03:07:16,556 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2022-11-23 03:07:16,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2022-11-23 03:07:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:07:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:07:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 434 transitions. [2022-11-23 03:07:16,558 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45208333333333334 [2022-11-23 03:07:16,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 434 transitions. [2022-11-23 03:07:16,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 434 transitions. [2022-11-23 03:07:16,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:16,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 434 transitions. [2022-11-23 03:07:16,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,563 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 434 transitions. [2022-11-23 03:07:16,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2022-11-23 03:07:16,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-23 03:07:16,566 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2022-11-23 03:07:16,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-11-23 03:07:16,567 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2022-11-23 03:07:16,567 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2022-11-23 03:07:16,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:16,568 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:16,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (8)] Ended with exit code 0 [2022-11-23 03:07:16,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:16,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:16,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 967388113, now seen corresponding path program 2 times [2022-11-23 03:07:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:16,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562216675] [2022-11-23 03:07:16,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:07:16,783 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 [2022-11-23 03:07:16,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:16,784 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:16,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (9)] Waiting until timeout for monitored process [2022-11-23 03:07:16,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 03:07:16,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:16,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 03:07:16,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:16,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:16,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562216675] [2022-11-23 03:07:16,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562216675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:16,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:16,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:07:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318952613] [2022-11-23 03:07:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:07:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:07:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:07:16,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:16,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:16,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:16,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:17,149 INFO L130 PetriNetUnfolder]: 124/219 cut-off events. [2022-11-23 03:07:17,149 INFO L131 PetriNetUnfolder]: For 509/509 co-relation queries the response was YES. [2022-11-23 03:07:17,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 509/509 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 697 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2022-11-23 03:07:17,151 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2022-11-23 03:07:17,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2022-11-23 03:07:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:07:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-23 03:07:17,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2022-11-23 03:07:17,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4510416666666667 [2022-11-23 03:07:17,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2022-11-23 03:07:17,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2022-11-23 03:07:17,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:17,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2022-11-23 03:07:17,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,159 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,159 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 433 transitions. [2022-11-23 03:07:17,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2022-11-23 03:07:17,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-11-23 03:07:17,167 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2022-11-23 03:07:17,168 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2022-11-23 03:07:17,171 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2022-11-23 03:07:17,171 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2022-11-23 03:07:17,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,171 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:17,172 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:17,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:17,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:17,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:17,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:17,383 INFO L85 PathProgramCache]: Analyzing trace with hash -572200984, now seen corresponding path program 1 times [2022-11-23 03:07:17,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:17,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975611663] [2022-11-23 03:07:17,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:07:17,384 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 [2022-11-23 03:07:17,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:17,386 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:17,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (10)] Waiting until timeout for monitored process [2022-11-23 03:07:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:17,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:07:17,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:17,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:17,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:17,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975611663] [2022-11-23 03:07:17,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975611663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:17,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:17,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:07:17,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104588246] [2022-11-23 03:07:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:17,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:07:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:07:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:07:17,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:17,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:17,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:17,864 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2022-11-23 03:07:17,864 INFO L131 PetriNetUnfolder]: For 1075/1075 co-relation queries the response was YES. [2022-11-23 03:07:17,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1070 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2022-11-23 03:07:17,867 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2022-11-23 03:07:17,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2022-11-23 03:07:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 03:07:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 03:07:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 646 transitions. [2022-11-23 03:07:17,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4486111111111111 [2022-11-23 03:07:17,871 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 646 transitions. [2022-11-23 03:07:17,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 646 transitions. [2022-11-23 03:07:17,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:17,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 646 transitions. [2022-11-23 03:07:17,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.77777777777777) internal successors, (646), 9 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,877 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,877 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 646 transitions. [2022-11-23 03:07:17,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2022-11-23 03:07:17,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-23 03:07:17,882 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2022-11-23 03:07:17,883 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2022-11-23 03:07:17,883 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2022-11-23 03:07:17,884 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2022-11-23 03:07:17,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:17,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:17,884 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:17,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (10)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:18,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:18,097 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash -572172154, now seen corresponding path program 2 times [2022-11-23 03:07:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:18,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726857405] [2022-11-23 03:07:18,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:07:18,098 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 [2022-11-23 03:07:18,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:18,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:18,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (11)] Waiting until timeout for monitored process [2022-11-23 03:07:18,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 03:07:18,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:18,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:07:18,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:18,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:18,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:18,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726857405] [2022-11-23 03:07:18,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726857405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:18,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:18,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:07:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314675751] [2022-11-23 03:07:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:18,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:07:18,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:18,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:07:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:07:18,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:18,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:18,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:18,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:18,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:18,555 INFO L130 PetriNetUnfolder]: 168/299 cut-off events. [2022-11-23 03:07:18,555 INFO L131 PetriNetUnfolder]: For 1675/1675 co-relation queries the response was YES. [2022-11-23 03:07:18,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1675/1675 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1070 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2022-11-23 03:07:18,558 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2022-11-23 03:07:18,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2022-11-23 03:07:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:07:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:07:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-11-23 03:07:18,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-11-23 03:07:18,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-11-23 03:07:18,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-11-23 03:07:18,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:18,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-11-23 03:07:18,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:18,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:18,568 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:18,568 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 504 transitions. [2022-11-23 03:07:18,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2022-11-23 03:07:18,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-11-23 03:07:18,580 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2022-11-23 03:07:18,581 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2022-11-23 03:07:18,582 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2022-11-23 03:07:18,582 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2022-11-23 03:07:18,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:18,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:18,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:18,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (11)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:18,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:18,787 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash -546340474, now seen corresponding path program 3 times [2022-11-23 03:07:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973093597] [2022-11-23 03:07:18,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:07:18,788 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 [2022-11-23 03:07:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:18,789 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:18,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (12)] Waiting until timeout for monitored process [2022-11-23 03:07:18,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-23 03:07:18,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:18,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:07:18,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:18,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:18,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:18,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973093597] [2022-11-23 03:07:18,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973093597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:18,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:18,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:07:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948930338] [2022-11-23 03:07:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:07:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:07:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:07:19,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:19,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:19,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:19,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:19,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:19,300 INFO L130 PetriNetUnfolder]: 164/295 cut-off events. [2022-11-23 03:07:19,300 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2022-11-23 03:07:19,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1102 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2022-11-23 03:07:19,303 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2022-11-23 03:07:19,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2022-11-23 03:07:19,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:07:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:07:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-11-23 03:07:19,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-11-23 03:07:19,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-11-23 03:07:19,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-11-23 03:07:19,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:19,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-11-23 03:07:19,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:19,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:19,311 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:19,312 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 504 transitions. [2022-11-23 03:07:19,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2022-11-23 03:07:19,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-23 03:07:19,321 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2022-11-23 03:07:19,321 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2022-11-23 03:07:19,322 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2022-11-23 03:07:19,322 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2022-11-23 03:07:19,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:19,323 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:19,323 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:19,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (12)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:19,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:19,540 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:19,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:19,540 INFO L85 PathProgramCache]: Analyzing trace with hash -572229814, now seen corresponding path program 4 times [2022-11-23 03:07:19,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:19,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092867824] [2022-11-23 03:07:19,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:07:19,542 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 [2022-11-23 03:07:19,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:19,543 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:19,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (13)] Waiting until timeout for monitored process [2022-11-23 03:07:19,625 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:07:19,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:19,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 03:07:19,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:19,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:07:19,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:19,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092867824] [2022-11-23 03:07:19,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092867824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:07:19,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:07:19,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:07:19,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315220347] [2022-11-23 03:07:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:07:19,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 03:07:19,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 03:07:19,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:07:19,747 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:19,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:19,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:19,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:19,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:19,997 INFO L130 PetriNetUnfolder]: 176/315 cut-off events. [2022-11-23 03:07:19,998 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2022-11-23 03:07:19,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1190 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2022-11-23 03:07:20,000 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2022-11-23 03:07:20,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2022-11-23 03:07:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:07:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-23 03:07:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2022-11-23 03:07:20,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44910714285714287 [2022-11-23 03:07:20,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2022-11-23 03:07:20,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2022-11-23 03:07:20,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:20,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2022-11-23 03:07:20,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:20,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:20,010 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:20,010 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 503 transitions. [2022-11-23 03:07:20,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2022-11-23 03:07:20,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-23 03:07:20,023 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2022-11-23 03:07:20,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2022-11-23 03:07:20,024 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2022-11-23 03:07:20,024 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2022-11-23 03:07:20,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:20,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:20,025 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:20,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (13)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:20,237 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash -557435877, now seen corresponding path program 5 times [2022-11-23 03:07:20,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:20,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581915522] [2022-11-23 03:07:20,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:07:20,238 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 [2022-11-23 03:07:20,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:20,239 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:20,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (14)] Waiting until timeout for monitored process [2022-11-23 03:07:20,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:07:20,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:20,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:07:20,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:20,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:20,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:20,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581915522] [2022-11-23 03:07:20,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581915522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:20,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:20,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 03:07:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502492820] [2022-11-23 03:07:20,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:07:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:07:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:07:20,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:20,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:20,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:20,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:20,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:21,737 INFO L130 PetriNetUnfolder]: 224/395 cut-off events. [2022-11-23 03:07:21,737 INFO L131 PetriNetUnfolder]: For 4433/4433 co-relation queries the response was YES. [2022-11-23 03:07:21,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1542 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2022-11-23 03:07:21,741 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2022-11-23 03:07:21,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2022-11-23 03:07:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:07:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 03:07:21,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1143 transitions. [2022-11-23 03:07:21,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.446484375 [2022-11-23 03:07:21,746 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1143 transitions. [2022-11-23 03:07:21,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1143 transitions. [2022-11-23 03:07:21,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:21,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1143 transitions. [2022-11-23 03:07:21,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.4375) internal successors, (1143), 16 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:21,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:21,756 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:21,757 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1143 transitions. [2022-11-23 03:07:21,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2022-11-23 03:07:21,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-23 03:07:21,781 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2022-11-23 03:07:21,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2022-11-23 03:07:21,783 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2022-11-23 03:07:21,783 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2022-11-23 03:07:21,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:21,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:21,784 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:21,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (14)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:21,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:21,997 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash -587911109, now seen corresponding path program 6 times [2022-11-23 03:07:21,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:21,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165023369] [2022-11-23 03:07:21,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:07:21,998 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 [2022-11-23 03:07:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:21,999 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:22,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (15)] Waiting until timeout for monitored process [2022-11-23 03:07:22,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-23 03:07:22,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:22,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:07:22,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:22,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:22,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:22,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165023369] [2022-11-23 03:07:22,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165023369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:22,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:22,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 03:07:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759482293] [2022-11-23 03:07:22,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:22,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:07:22,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:07:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:07:22,557 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:22,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:22,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:22,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:22,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:23,110 INFO L130 PetriNetUnfolder]: 248/443 cut-off events. [2022-11-23 03:07:23,110 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2022-11-23 03:07:23,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1709 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2022-11-23 03:07:23,114 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2022-11-23 03:07:23,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2022-11-23 03:07:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:07:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-23 03:07:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 857 transitions. [2022-11-23 03:07:23,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44635416666666666 [2022-11-23 03:07:23,129 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 857 transitions. [2022-11-23 03:07:23,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 857 transitions. [2022-11-23 03:07:23,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:23,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 857 transitions. [2022-11-23 03:07:23,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.41666666666667) internal successors, (857), 12 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:23,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:23,136 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:23,136 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 857 transitions. [2022-11-23 03:07:23,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2022-11-23 03:07:23,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2022-11-23 03:07:23,159 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2022-11-23 03:07:23,159 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2022-11-23 03:07:23,160 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2022-11-23 03:07:23,160 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2022-11-23 03:07:23,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:23,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:23,161 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:23,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (15)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:23,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:23,372 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:23,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:23,373 INFO L85 PathProgramCache]: Analyzing trace with hash -560205479, now seen corresponding path program 7 times [2022-11-23 03:07:23,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:23,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840356123] [2022-11-23 03:07:23,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:07:23,374 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 [2022-11-23 03:07:23,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:23,375 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:23,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (16)] Waiting until timeout for monitored process [2022-11-23 03:07:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:07:23,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:23,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:23,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:23,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:23,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840356123] [2022-11-23 03:07:23,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840356123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:23,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:23,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 03:07:23,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005546766] [2022-11-23 03:07:23,765 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:23,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:07:23,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:23,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:07:23,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:07:23,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:23,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:23,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:23,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:24,859 INFO L130 PetriNetUnfolder]: 336/603 cut-off events. [2022-11-23 03:07:24,859 INFO L131 PetriNetUnfolder]: For 12764/12764 co-relation queries the response was YES. [2022-11-23 03:07:24,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12764/12764 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2600 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2022-11-23 03:07:24,865 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2022-11-23 03:07:24,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2022-11-23 03:07:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 03:07:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-23 03:07:24,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1143 transitions. [2022-11-23 03:07:24,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.446484375 [2022-11-23 03:07:24,872 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1143 transitions. [2022-11-23 03:07:24,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1143 transitions. [2022-11-23 03:07:24,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:24,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1143 transitions. [2022-11-23 03:07:24,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.4375) internal successors, (1143), 16 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:24,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:24,883 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:24,883 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1143 transitions. [2022-11-23 03:07:24,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2022-11-23 03:07:24,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-11-23 03:07:24,919 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2022-11-23 03:07:24,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2022-11-23 03:07:24,920 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2022-11-23 03:07:24,920 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2022-11-23 03:07:24,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:24,921 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:24,921 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:24,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (16)] Ended with exit code 0 [2022-11-23 03:07:25,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:25,132 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:25,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:25,133 INFO L85 PathProgramCache]: Analyzing trace with hash -559225259, now seen corresponding path program 8 times [2022-11-23 03:07:25,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:25,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527109553] [2022-11-23 03:07:25,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:07:25,133 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 [2022-11-23 03:07:25,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:25,134 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:25,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (17)] Waiting until timeout for monitored process [2022-11-23 03:07:25,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:07:25,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:25,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 03:07:25,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:25,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:25,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527109553] [2022-11-23 03:07:25,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527109553] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:25,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:25,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-23 03:07:25,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532970135] [2022-11-23 03:07:25,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:25,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:07:25,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:25,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:07:25,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:07:25,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:25,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:25,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:25,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:26,806 INFO L130 PetriNetUnfolder]: 384/691 cut-off events. [2022-11-23 03:07:26,806 INFO L131 PetriNetUnfolder]: For 24213/24213 co-relation queries the response was YES. [2022-11-23 03:07:26,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 24213/24213 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3064 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2022-11-23 03:07:26,813 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2022-11-23 03:07:26,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2022-11-23 03:07:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 03:07:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-23 03:07:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1285 transitions. [2022-11-23 03:07:26,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4461805555555556 [2022-11-23 03:07:26,817 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1285 transitions. [2022-11-23 03:07:26,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1285 transitions. [2022-11-23 03:07:26,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:26,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1285 transitions. [2022-11-23 03:07:26,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 71.38888888888889) internal successors, (1285), 18 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:26,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:26,831 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 160.0) internal successors, (3040), 19 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:26,832 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1285 transitions. [2022-11-23 03:07:26,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2022-11-23 03:07:26,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2022-11-23 03:07:26,894 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2022-11-23 03:07:26,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2022-11-23 03:07:26,895 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2022-11-23 03:07:26,896 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2022-11-23 03:07:26,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:26,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:26,896 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:26,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (17)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:27,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:27,108 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:27,108 INFO L85 PathProgramCache]: Analyzing trace with hash 638264665, now seen corresponding path program 9 times [2022-11-23 03:07:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:27,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068171129] [2022-11-23 03:07:27,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:07:27,109 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 [2022-11-23 03:07:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:27,110 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:27,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (18)] Waiting until timeout for monitored process [2022-11-23 03:07:27,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 03:07:27,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:27,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 03:07:27,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:27,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:27,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:27,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:27,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068171129] [2022-11-23 03:07:27,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068171129] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:27,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:27,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 03:07:27,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847620936] [2022-11-23 03:07:27,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:27,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 03:07:27,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:27,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 03:07:27,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-23 03:07:28,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:28,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:28,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:28,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:28,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:29,967 INFO L130 PetriNetUnfolder]: 488/891 cut-off events. [2022-11-23 03:07:29,967 INFO L131 PetriNetUnfolder]: For 44617/44617 co-relation queries the response was YES. [2022-11-23 03:07:29,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7103 conditions, 891 events. 488/891 cut-off events. For 44617/44617 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4315 event pairs, 94 based on Foata normal form. 32/923 useless extension candidates. Maximal degree in co-relation 7049. Up to 401 conditions per place. [2022-11-23 03:07:29,976 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 99 selfloop transitions, 63 changer transitions 43/205 dead transitions. [2022-11-23 03:07:29,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 205 transitions, 3412 flow [2022-11-23 03:07:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-23 03:07:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-23 03:07:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1706 transitions. [2022-11-23 03:07:29,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44427083333333334 [2022-11-23 03:07:29,981 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1706 transitions. [2022-11-23 03:07:29,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1706 transitions. [2022-11-23 03:07:29,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:29,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1706 transitions. [2022-11-23 03:07:29,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 71.08333333333333) internal successors, (1706), 24 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:29,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:29,997 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:29,997 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1706 transitions. [2022-11-23 03:07:29,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 205 transitions, 3412 flow [2022-11-23 03:07:30,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 205 transitions, 2935 flow, removed 222 selfloop flow, removed 8 redundant places. [2022-11-23 03:07:30,119 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 2082 flow [2022-11-23 03:07:30,120 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2082, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2022-11-23 03:07:30,120 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2022-11-23 03:07:30,120 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 2082 flow [2022-11-23 03:07:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:30,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:30,121 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:30,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (18)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:30,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:30,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:30,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash 547635741, now seen corresponding path program 10 times [2022-11-23 03:07:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:30,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821075797] [2022-11-23 03:07:30,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:07:30,335 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 [2022-11-23 03:07:30,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:30,336 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:30,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (19)] Waiting until timeout for monitored process [2022-11-23 03:07:30,433 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:07:30,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:30,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 03:07:30,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:30,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:31,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:31,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821075797] [2022-11-23 03:07:31,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821075797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:31,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:31,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 03:07:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924122004] [2022-11-23 03:07:31,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 03:07:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 03:07:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-11-23 03:07:31,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:31,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 2082 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:31,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:31,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:31,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:34,956 INFO L130 PetriNetUnfolder]: 692/1267 cut-off events. [2022-11-23 03:07:34,956 INFO L131 PetriNetUnfolder]: For 76972/76972 co-relation queries the response was YES. [2022-11-23 03:07:35,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 1267 events. 692/1267 cut-off events. For 76972/76972 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6372 event pairs, 40 based on Foata normal form. 32/1299 useless extension candidates. Maximal degree in co-relation 12171. Up to 444 conditions per place. [2022-11-23 03:07:35,010 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 110 selfloop transitions, 147 changer transitions 27/284 dead transitions. [2022-11-23 03:07:35,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 284 transitions, 5875 flow [2022-11-23 03:07:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-23 03:07:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-23 03:07:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2484 transitions. [2022-11-23 03:07:35,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44357142857142856 [2022-11-23 03:07:35,016 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2484 transitions. [2022-11-23 03:07:35,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2484 transitions. [2022-11-23 03:07:35,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:35,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2484 transitions. [2022-11-23 03:07:35,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 70.97142857142858) internal successors, (2484), 35 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:35,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 160.0) internal successors, (5760), 36 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:35,031 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 160.0) internal successors, (5760), 36 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:35,032 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 2082 flow. Second operand 35 states and 2484 transitions. [2022-11-23 03:07:35,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 284 transitions, 5875 flow [2022-11-23 03:07:35,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 284 transitions, 5148 flow, removed 341 selfloop flow, removed 10 redundant places. [2022-11-23 03:07:35,220 INFO L231 Difference]: Finished difference. Result has 196 places, 191 transitions, 4139 flow [2022-11-23 03:07:35,221 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4139, PETRI_PLACES=196, PETRI_TRANSITIONS=191} [2022-11-23 03:07:35,221 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2022-11-23 03:07:35,221 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 191 transitions, 4139 flow [2022-11-23 03:07:35,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:35,223 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:35,223 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:35,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (19)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:35,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:35,434 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash 548615961, now seen corresponding path program 11 times [2022-11-23 03:07:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:35,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500639299] [2022-11-23 03:07:35,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:07:35,435 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 [2022-11-23 03:07:35,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:35,436 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:35,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (20)] Waiting until timeout for monitored process [2022-11-23 03:07:35,536 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-23 03:07:35,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:35,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 03:07:35,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:35,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:36,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:36,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500639299] [2022-11-23 03:07:36,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500639299] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:36,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:36,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 03:07:36,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009569197] [2022-11-23 03:07:36,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:36,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 03:07:36,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 03:07:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-23 03:07:36,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:36,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 191 transitions, 4139 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:36,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:36,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:36,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:39,263 INFO L130 PetriNetUnfolder]: 756/1383 cut-off events. [2022-11-23 03:07:39,263 INFO L131 PetriNetUnfolder]: For 116934/116934 co-relation queries the response was YES. [2022-11-23 03:07:39,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 1383 events. 756/1383 cut-off events. For 116934/116934 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7116 event pairs, 31 based on Foata normal form. 40/1423 useless extension candidates. Maximal degree in co-relation 14476. Up to 492 conditions per place. [2022-11-23 03:07:39,278 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 84 selfloop transitions, 162 changer transitions 54/300 dead transitions. [2022-11-23 03:07:39,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 300 transitions, 6668 flow [2022-11-23 03:07:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-23 03:07:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-23 03:07:39,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2134 transitions. [2022-11-23 03:07:39,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44458333333333333 [2022-11-23 03:07:39,282 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2134 transitions. [2022-11-23 03:07:39,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2134 transitions. [2022-11-23 03:07:39,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:39,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2134 transitions. [2022-11-23 03:07:39,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 71.13333333333334) internal successors, (2134), 30 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:39,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:39,325 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 160.0) internal successors, (4960), 31 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:39,325 INFO L175 Difference]: Start difference. First operand has 196 places, 191 transitions, 4139 flow. Second operand 30 states and 2134 transitions. [2022-11-23 03:07:39,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 300 transitions, 6668 flow [2022-11-23 03:07:39,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 300 transitions, 4781 flow, removed 891 selfloop flow, removed 17 redundant places. [2022-11-23 03:07:39,837 INFO L231 Difference]: Finished difference. Result has 212 places, 209 transitions, 3497 flow [2022-11-23 03:07:39,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3497, PETRI_PLACES=212, PETRI_TRANSITIONS=209} [2022-11-23 03:07:39,838 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 188 predicate places. [2022-11-23 03:07:39,838 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 209 transitions, 3497 flow [2022-11-23 03:07:39,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:39,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:39,839 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:39,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (20)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:40,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:40,051 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1638218583, now seen corresponding path program 12 times [2022-11-23 03:07:40,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:40,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52498322] [2022-11-23 03:07:40,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:07:40,052 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 [2022-11-23 03:07:40,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:40,053 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:40,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (21)] Waiting until timeout for monitored process [2022-11-23 03:07:40,151 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-23 03:07:40,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:40,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 03:07:40,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:40,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:07:40,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:40,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52498322] [2022-11-23 03:07:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52498322] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:40,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-23 03:07:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685035450] [2022-11-23 03:07:40,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:40,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 03:07:40,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 03:07:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-23 03:07:41,019 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:41,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 209 transitions, 3497 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:41,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:41,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:41,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:43,561 INFO L130 PetriNetUnfolder]: 840/1523 cut-off events. [2022-11-23 03:07:43,562 INFO L131 PetriNetUnfolder]: For 112927/112927 co-relation queries the response was YES. [2022-11-23 03:07:43,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14600 conditions, 1523 events. 840/1523 cut-off events. For 112927/112927 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7847 event pairs, 54 based on Foata normal form. 28/1551 useless extension candidates. Maximal degree in co-relation 14519. Up to 424 conditions per place. [2022-11-23 03:07:43,579 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 96 selfloop transitions, 176 changer transitions 50/322 dead transitions. [2022-11-23 03:07:43,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 322 transitions, 6365 flow [2022-11-23 03:07:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-23 03:07:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-23 03:07:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1992 transitions. [2022-11-23 03:07:43,583 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4446428571428571 [2022-11-23 03:07:43,583 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1992 transitions. [2022-11-23 03:07:43,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1992 transitions. [2022-11-23 03:07:43,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:43,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1992 transitions. [2022-11-23 03:07:43,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 71.14285714285714) internal successors, (1992), 28 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:43,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 160.0) internal successors, (4640), 29 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:43,596 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 160.0) internal successors, (4640), 29 states have internal predecessors, (4640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:43,596 INFO L175 Difference]: Start difference. First operand has 212 places, 209 transitions, 3497 flow. Second operand 28 states and 1992 transitions. [2022-11-23 03:07:43,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 322 transitions, 6365 flow [2022-11-23 03:07:43,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 322 transitions, 5818 flow, removed 215 selfloop flow, removed 19 redundant places. [2022-11-23 03:07:43,954 INFO L231 Difference]: Finished difference. Result has 236 places, 232 transitions, 4493 flow [2022-11-23 03:07:43,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4493, PETRI_PLACES=236, PETRI_TRANSITIONS=232} [2022-11-23 03:07:43,955 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2022-11-23 03:07:43,955 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 232 transitions, 4493 flow [2022-11-23 03:07:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:43,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:43,956 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:43,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (21)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:44,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:44,156 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:44,157 INFO L85 PathProgramCache]: Analyzing trace with hash 908134981, now seen corresponding path program 13 times [2022-11-23 03:07:44,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:44,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972059063] [2022-11-23 03:07:44,157 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:07:44,157 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 [2022-11-23 03:07:44,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:44,158 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:44,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (22)] Waiting until timeout for monitored process [2022-11-23 03:07:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:07:44,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 03:07:44,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:44,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:45,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:45,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972059063] [2022-11-23 03:07:45,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972059063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:45,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:45,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 03:07:45,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117884698] [2022-11-23 03:07:45,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:45,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 03:07:45,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 03:07:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2022-11-23 03:07:46,309 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:46,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 232 transitions, 4493 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:46,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:46,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:46,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:07:56,147 INFO L130 PetriNetUnfolder]: 1008/1803 cut-off events. [2022-11-23 03:07:56,147 INFO L131 PetriNetUnfolder]: For 197782/197782 co-relation queries the response was YES. [2022-11-23 03:07:56,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20835 conditions, 1803 events. 1008/1803 cut-off events. For 197782/197782 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8691 event pairs, 12 based on Foata normal form. 56/1859 useless extension candidates. Maximal degree in co-relation 20743. Up to 536 conditions per place. [2022-11-23 03:07:56,170 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 101 selfloop transitions, 238 changer transitions 106/445 dead transitions. [2022-11-23 03:07:56,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 445 transitions, 10971 flow [2022-11-23 03:07:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-23 03:07:56,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-23 03:07:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 3973 transitions. [2022-11-23 03:07:56,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4434151785714286 [2022-11-23 03:07:56,177 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 3973 transitions. [2022-11-23 03:07:56,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 3973 transitions. [2022-11-23 03:07:56,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:07:56,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 3973 transitions. [2022-11-23 03:07:56,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 70.94642857142857) internal successors, (3973), 56 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:56,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 160.0) internal successors, (9120), 57 states have internal predecessors, (9120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:56,198 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 160.0) internal successors, (9120), 57 states have internal predecessors, (9120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:56,199 INFO L175 Difference]: Start difference. First operand has 236 places, 232 transitions, 4493 flow. Second operand 56 states and 3973 transitions. [2022-11-23 03:07:56,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 445 transitions, 10971 flow [2022-11-23 03:07:56,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 445 transitions, 10291 flow, removed 313 selfloop flow, removed 9 redundant places. [2022-11-23 03:07:56,662 INFO L231 Difference]: Finished difference. Result has 310 places, 274 transitions, 6723 flow [2022-11-23 03:07:56,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6723, PETRI_PLACES=310, PETRI_TRANSITIONS=274} [2022-11-23 03:07:56,663 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 286 predicate places. [2022-11-23 03:07:56,663 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 274 transitions, 6723 flow [2022-11-23 03:07:56,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:56,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:07:56,664 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:07:56,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (22)] Forceful destruction successful, exit code 0 [2022-11-23 03:07:56,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:07:56,866 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:07:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:07:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1596433499, now seen corresponding path program 14 times [2022-11-23 03:07:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:07:56,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744869760] [2022-11-23 03:07:56,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:07:56,868 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 [2022-11-23 03:07:56,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:07:56,869 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:07:56,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (23)] Waiting until timeout for monitored process [2022-11-23 03:07:56,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:07:56,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:07:56,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 03:07:56,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:07:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:57,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:07:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:07:58,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:07:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744869760] [2022-11-23 03:07:58,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744869760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:07:58,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:07:58,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 03:07:58,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576896741] [2022-11-23 03:07:58,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:07:58,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 03:07:58,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:07:58,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 03:07:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2022-11-23 03:07:58,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:07:58,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 274 transitions, 6723 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:07:58,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:07:58,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:07:58,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:08:03,264 INFO L130 PetriNetUnfolder]: 1088/1963 cut-off events. [2022-11-23 03:08:03,264 INFO L131 PetriNetUnfolder]: For 381653/381653 co-relation queries the response was YES. [2022-11-23 03:08:03,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28381 conditions, 1963 events. 1088/1963 cut-off events. For 381653/381653 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9549 event pairs, 401 based on Foata normal form. 64/2027 useless extension candidates. Maximal degree in co-relation 28261. Up to 1641 conditions per place. [2022-11-23 03:08:03,290 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 290 selfloop transitions, 39 changer transitions 59/388 dead transitions. [2022-11-23 03:08:03,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 388 transitions, 11609 flow [2022-11-23 03:08:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 03:08:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-23 03:08:03,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2267 transitions. [2022-11-23 03:08:03,294 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4427734375 [2022-11-23 03:08:03,295 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2267 transitions. [2022-11-23 03:08:03,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2267 transitions. [2022-11-23 03:08:03,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:08:03,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2267 transitions. [2022-11-23 03:08:03,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 70.84375) internal successors, (2267), 32 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:03,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 160.0) internal successors, (5280), 33 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:03,307 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 160.0) internal successors, (5280), 33 states have internal predecessors, (5280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:03,307 INFO L175 Difference]: Start difference. First operand has 310 places, 274 transitions, 6723 flow. Second operand 32 states and 2267 transitions. [2022-11-23 03:08:03,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 388 transitions, 11609 flow [2022-11-23 03:08:04,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 388 transitions, 9280 flow, removed 1020 selfloop flow, removed 27 redundant places. [2022-11-23 03:08:04,337 INFO L231 Difference]: Finished difference. Result has 334 places, 294 transitions, 6306 flow [2022-11-23 03:08:04,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4590, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=6306, PETRI_PLACES=334, PETRI_TRANSITIONS=294} [2022-11-23 03:08:04,340 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 310 predicate places. [2022-11-23 03:08:04,341 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 294 transitions, 6306 flow [2022-11-23 03:08:04,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:04,355 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:08:04,355 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:04,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (23)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:04,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:08:04,568 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:08:04,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash 680447811, now seen corresponding path program 15 times [2022-11-23 03:08:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:08:04,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784189128] [2022-11-23 03:08:04,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:08:04,568 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 [2022-11-23 03:08:04,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:08:04,569 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:08:04,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (24)] Waiting until timeout for monitored process [2022-11-23 03:08:04,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-23 03:08:04,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:08:04,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 03:08:04,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:05,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:06,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:08:06,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784189128] [2022-11-23 03:08:06,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784189128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:06,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:08:06,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 03:08:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283793282] [2022-11-23 03:08:06,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:06,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 03:08:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:08:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 03:08:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-11-23 03:08:06,719 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:08:06,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 294 transitions, 6306 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:06,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:08:06,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:08:06,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:08:14,290 INFO L130 PetriNetUnfolder]: 1396/2571 cut-off events. [2022-11-23 03:08:14,290 INFO L131 PetriNetUnfolder]: For 698769/698769 co-relation queries the response was YES. [2022-11-23 03:08:14,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41070 conditions, 2571 events. 1396/2571 cut-off events. For 698769/698769 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13519 event pairs, 367 based on Foata normal form. 64/2635 useless extension candidates. Maximal degree in co-relation 40934. Up to 1456 conditions per place. [2022-11-23 03:08:14,332 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 327 selfloop transitions, 130 changer transitions 59/516 dead transitions. [2022-11-23 03:08:14,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 516 transitions, 15035 flow [2022-11-23 03:08:14,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-23 03:08:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-23 03:08:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3463 transitions. [2022-11-23 03:08:14,339 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4417091836734694 [2022-11-23 03:08:14,340 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3463 transitions. [2022-11-23 03:08:14,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3463 transitions. [2022-11-23 03:08:14,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:08:14,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3463 transitions. [2022-11-23 03:08:14,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 70.6734693877551) internal successors, (3463), 49 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:14,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 160.0) internal successors, (8000), 50 states have internal predecessors, (8000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:14,358 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 160.0) internal successors, (8000), 50 states have internal predecessors, (8000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:14,359 INFO L175 Difference]: Start difference. First operand has 334 places, 294 transitions, 6306 flow. Second operand 49 states and 3463 transitions. [2022-11-23 03:08:14,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 516 transitions, 15035 flow [2022-11-23 03:08:16,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 516 transitions, 13607 flow, removed 695 selfloop flow, removed 11 redundant places. [2022-11-23 03:08:16,121 INFO L231 Difference]: Finished difference. Result has 398 places, 359 transitions, 8804 flow [2022-11-23 03:08:16,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=8804, PETRI_PLACES=398, PETRI_TRANSITIONS=359} [2022-11-23 03:08:16,122 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 374 predicate places. [2022-11-23 03:08:16,122 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 359 transitions, 8804 flow [2022-11-23 03:08:16,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:16,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:08:16,123 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:16,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (24)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:16,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:08:16,323 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:08:16,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:16,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2055158327, now seen corresponding path program 16 times [2022-11-23 03:08:16,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:08:16,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975216766] [2022-11-23 03:08:16,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:08:16,324 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 [2022-11-23 03:08:16,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:08:16,325 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:08:16,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (25)] Waiting until timeout for monitored process [2022-11-23 03:08:16,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:08:16,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:08:16,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 03:08:16,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:16,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:17,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:08:17,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975216766] [2022-11-23 03:08:17,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975216766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:17,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:08:17,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 03:08:17,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107567534] [2022-11-23 03:08:17,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:17,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 03:08:17,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:08:17,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 03:08:17,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2022-11-23 03:08:18,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:08:18,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 359 transitions, 8804 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:18,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:08:18,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:08:18,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:08:31,864 INFO L130 PetriNetUnfolder]: 2156/3991 cut-off events. [2022-11-23 03:08:31,864 INFO L131 PetriNetUnfolder]: For 1588486/1588486 co-relation queries the response was YES. [2022-11-23 03:08:31,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78254 conditions, 3991 events. 2156/3991 cut-off events. For 1588486/1588486 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23099 event pairs, 105 based on Foata normal form. 72/4063 useless extension candidates. Maximal degree in co-relation 78091. Up to 1500 conditions per place. [2022-11-23 03:08:32,008 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 244 selfloop transitions, 466 changer transitions 63/773 dead transitions. [2022-11-23 03:08:32,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 773 transitions, 27492 flow [2022-11-23 03:08:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-23 03:08:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-11-23 03:08:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4951 transitions. [2022-11-23 03:08:32,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44205357142857143 [2022-11-23 03:08:32,048 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4951 transitions. [2022-11-23 03:08:32,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4951 transitions. [2022-11-23 03:08:32,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:08:32,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4951 transitions. [2022-11-23 03:08:32,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 70.72857142857143) internal successors, (4951), 70 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:32,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 160.0) internal successors, (11360), 71 states have internal predecessors, (11360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:32,091 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 160.0) internal successors, (11360), 71 states have internal predecessors, (11360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:32,091 INFO L175 Difference]: Start difference. First operand has 398 places, 359 transitions, 8804 flow. Second operand 70 states and 4951 transitions. [2022-11-23 03:08:32,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 773 transitions, 27492 flow [2022-11-23 03:08:36,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 773 transitions, 24559 flow, removed 1446 selfloop flow, removed 12 redundant places. [2022-11-23 03:08:36,098 INFO L231 Difference]: Finished difference. Result has 485 places, 577 transitions, 20067 flow [2022-11-23 03:08:36,099 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=6207, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=20067, PETRI_PLACES=485, PETRI_TRANSITIONS=577} [2022-11-23 03:08:36,099 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 461 predicate places. [2022-11-23 03:08:36,099 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 577 transitions, 20067 flow [2022-11-23 03:08:36,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:36,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:08:36,100 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:08:36,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (25)] Forceful destruction successful, exit code 0 [2022-11-23 03:08:36,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:08:36,300 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:08:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:08:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2013785131, now seen corresponding path program 17 times [2022-11-23 03:08:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:08:36,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872535633] [2022-11-23 03:08:36,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:08:36,302 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 [2022-11-23 03:08:36,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:08:36,303 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:08:36,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (26)] Waiting until timeout for monitored process [2022-11-23 03:08:36,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-23 03:08:36,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:08:36,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 03:08:36,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:08:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:36,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:08:37,855 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:08:37,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:08:37,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872535633] [2022-11-23 03:08:37,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872535633] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:08:37,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:08:37,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2022-11-23 03:08:37,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676121445] [2022-11-23 03:08:37,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:08:37,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-23 03:08:37,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:08:37,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-23 03:08:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=824, Unknown=0, NotChecked=0, Total=992 [2022-11-23 03:08:38,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:08:38,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 577 transitions, 20067 flow. Second operand has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:38,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:08:38,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:08:38,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:08:51,436 INFO L130 PetriNetUnfolder]: 2816/5167 cut-off events. [2022-11-23 03:08:51,437 INFO L131 PetriNetUnfolder]: For 2988521/2988521 co-relation queries the response was YES. [2022-11-23 03:08:51,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115815 conditions, 5167 events. 2816/5167 cut-off events. For 2988521/2988521 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 30900 event pairs, 43 based on Foata normal form. 144/5311 useless extension candidates. Maximal degree in co-relation 115621. Up to 2016 conditions per place. [2022-11-23 03:08:51,510 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 180 selfloop transitions, 658 changer transitions 110/948 dead transitions. [2022-11-23 03:08:51,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 948 transitions, 40415 flow [2022-11-23 03:08:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-23 03:08:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-23 03:08:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 4115 transitions. [2022-11-23 03:08:51,515 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44342672413793105 [2022-11-23 03:08:51,516 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 4115 transitions. [2022-11-23 03:08:51,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 4115 transitions. [2022-11-23 03:08:51,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:08:51,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 4115 transitions. [2022-11-23 03:08:51,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 70.94827586206897) internal successors, (4115), 58 states have internal predecessors, (4115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:51,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 160.0) internal successors, (9440), 59 states have internal predecessors, (9440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:51,533 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 160.0) internal successors, (9440), 59 states have internal predecessors, (9440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:08:51,533 INFO L175 Difference]: Start difference. First operand has 485 places, 577 transitions, 20067 flow. Second operand 58 states and 4115 transitions. [2022-11-23 03:08:51,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 948 transitions, 40415 flow [2022-11-23 03:09:00,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 948 transitions, 23043 flow, removed 8571 selfloop flow, removed 26 redundant places. [2022-11-23 03:09:00,925 INFO L231 Difference]: Finished difference. Result has 531 places, 747 transitions, 17402 flow [2022-11-23 03:09:00,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=9294, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=468, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=17402, PETRI_PLACES=531, PETRI_TRANSITIONS=747} [2022-11-23 03:09:00,926 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 507 predicate places. [2022-11-23 03:09:00,926 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 747 transitions, 17402 flow [2022-11-23 03:09:00,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 67.3125) internal successors, (2154), 32 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:00,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:09:00,927 INFO L209 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:09:00,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (26)] Forceful destruction successful, exit code 0 [2022-11-23 03:09:01,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:09:01,135 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:09:01,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:01,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2117119271, now seen corresponding path program 18 times [2022-11-23 03:09:01,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:09:01,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564376853] [2022-11-23 03:09:01,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:09:01,136 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 [2022-11-23 03:09:01,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:09:01,136 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:09:01,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (27)] Waiting until timeout for monitored process [2022-11-23 03:09:01,299 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2022-11-23 03:09:01,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:09:01,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 03:09:01,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:09:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:09:02,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:09:04,956 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:09:04,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:09:04,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564376853] [2022-11-23 03:09:04,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564376853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:09:04,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:09:04,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2022-11-23 03:09:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066254313] [2022-11-23 03:09:04,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:09:04,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-23 03:09:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:09:04,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-23 03:09:04,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=2881, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 03:09:06,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:09:06,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 747 transitions, 17402 flow. Second operand has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:06,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:09:06,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:09:06,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:09:27,373 INFO L130 PetriNetUnfolder]: 3096/5727 cut-off events. [2022-11-23 03:09:27,373 INFO L131 PetriNetUnfolder]: For 3047532/3047532 co-relation queries the response was YES. [2022-11-23 03:09:27,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104858 conditions, 5727 events. 3096/5727 cut-off events. For 3047532/3047532 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 35322 event pairs, 1078 based on Foata normal form. 56/5783 useless extension candidates. Maximal degree in co-relation 104646. Up to 4373 conditions per place. [2022-11-23 03:09:27,585 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 732 selfloop transitions, 172 changer transitions 123/1027 dead transitions. [2022-11-23 03:09:27,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1027 transitions, 29710 flow [2022-11-23 03:09:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-23 03:09:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-23 03:09:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4512 transitions. [2022-11-23 03:09:27,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.440625 [2022-11-23 03:09:27,592 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4512 transitions. [2022-11-23 03:09:27,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4512 transitions. [2022-11-23 03:09:27,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:09:27,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4512 transitions. [2022-11-23 03:09:27,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 70.5) internal successors, (4512), 64 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:27,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 160.0) internal successors, (10400), 65 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:27,617 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 160.0) internal successors, (10400), 65 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:27,617 INFO L175 Difference]: Start difference. First operand has 531 places, 747 transitions, 17402 flow. Second operand 64 states and 4512 transitions. [2022-11-23 03:09:27,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1027 transitions, 29710 flow [2022-11-23 03:09:40,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 1027 transitions, 25080 flow, removed 2019 selfloop flow, removed 27 redundant places. [2022-11-23 03:09:40,674 INFO L231 Difference]: Finished difference. Result has 585 places, 817 transitions, 16486 flow [2022-11-23 03:09:40,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=12970, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=16486, PETRI_PLACES=585, PETRI_TRANSITIONS=817} [2022-11-23 03:09:40,675 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 561 predicate places. [2022-11-23 03:09:40,675 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 817 transitions, 16486 flow [2022-11-23 03:09:40,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:40,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:09:40,676 INFO L209 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:09:40,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (27)] Forceful destruction successful, exit code 0 [2022-11-23 03:09:40,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:09:40,877 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:09:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:09:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 406151039, now seen corresponding path program 19 times [2022-11-23 03:09:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:09:40,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506538623] [2022-11-23 03:09:40,877 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 03:09:40,877 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 [2022-11-23 03:09:40,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:09:40,878 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:09:40,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (28)] Waiting until timeout for monitored process [2022-11-23 03:09:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:09:41,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 03:09:41,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:09:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:09:41,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:09:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:09:45,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:09:45,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506538623] [2022-11-23 03:09:45,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506538623] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:09:45,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:09:45,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2022-11-23 03:09:45,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397354642] [2022-11-23 03:09:45,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:09:45,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-23 03:09:45,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:09:45,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-23 03:09:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2917, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 03:09:47,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:09:47,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 817 transitions, 16486 flow. Second operand has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:09:47,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:09:47,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:09:47,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:10:27,503 INFO L130 PetriNetUnfolder]: 3880/7279 cut-off events. [2022-11-23 03:10:27,503 INFO L131 PetriNetUnfolder]: For 4610087/4610087 co-relation queries the response was YES. [2022-11-23 03:10:27,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144758 conditions, 7279 events. 3880/7279 cut-off events. For 4610087/4610087 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 46342 event pairs, 733 based on Foata normal form. 56/7335 useless extension candidates. Maximal degree in co-relation 144529. Up to 3009 conditions per place. [2022-11-23 03:10:27,672 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 667 selfloop transitions, 540 changer transitions 117/1324 dead transitions. [2022-11-23 03:10:27,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 1324 transitions, 42403 flow [2022-11-23 03:10:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-11-23 03:10:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2022-11-23 03:10:27,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 6970 transitions. [2022-11-23 03:10:27,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44002525252525254 [2022-11-23 03:10:27,683 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 6970 transitions. [2022-11-23 03:10:27,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 6970 transitions. [2022-11-23 03:10:27,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:10:27,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 6970 transitions. [2022-11-23 03:10:27,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 70.4040404040404) internal successors, (6970), 99 states have internal predecessors, (6970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:27,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 160.0) internal successors, (16000), 100 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:27,714 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 160.0) internal successors, (16000), 100 states have internal predecessors, (16000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:27,714 INFO L175 Difference]: Start difference. First operand has 585 places, 817 transitions, 16486 flow. Second operand 99 states and 6970 transitions. [2022-11-23 03:10:27,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 1324 transitions, 42403 flow [2022-11-23 03:10:49,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 1324 transitions, 38585 flow, removed 1832 selfloop flow, removed 22 redundant places. [2022-11-23 03:10:49,285 INFO L231 Difference]: Finished difference. Result has 683 places, 1023 transitions, 27416 flow [2022-11-23 03:10:49,286 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=14464, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=27416, PETRI_PLACES=683, PETRI_TRANSITIONS=1023} [2022-11-23 03:10:49,286 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 659 predicate places. [2022-11-23 03:10:49,286 INFO L495 AbstractCegarLoop]: Abstraction has has 683 places, 1023 transitions, 27416 flow [2022-11-23 03:10:49,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:49,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:10:49,287 INFO L209 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:10:49,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (28)] Forceful destruction successful, exit code 0 [2022-11-23 03:10:49,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:10:49,488 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:10:49,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:10:49,488 INFO L85 PathProgramCache]: Analyzing trace with hash 725496199, now seen corresponding path program 20 times [2022-11-23 03:10:49,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:10:49,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139390203] [2022-11-23 03:10:49,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 03:10:49,488 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 [2022-11-23 03:10:49,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:10:49,489 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:10:49,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (29)] Waiting until timeout for monitored process [2022-11-23 03:10:49,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 03:10:49,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:10:49,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 03:10:49,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:10:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:10:50,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:10:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:10:53,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:10:53,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139390203] [2022-11-23 03:10:53,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139390203] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:10:53,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:10:53,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2022-11-23 03:10:53,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442119817] [2022-11-23 03:10:53,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:10:53,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-23 03:10:53,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:10:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-23 03:10:53,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2943, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 03:10:55,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:10:55,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 683 places, 1023 transitions, 27416 flow. Second operand has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:10:55,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:10:55,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:10:55,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:11:52,402 INFO L130 PetriNetUnfolder]: 4580/8651 cut-off events. [2022-11-23 03:11:52,402 INFO L131 PetriNetUnfolder]: For 7056849/7056849 co-relation queries the response was YES. [2022-11-23 03:11:52,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195522 conditions, 8651 events. 4580/8651 cut-off events. For 7056849/7056849 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 56915 event pairs, 399 based on Foata normal form. 56/8707 useless extension candidates. Maximal degree in co-relation 195271. Up to 3172 conditions per place. [2022-11-23 03:11:52,606 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 591 selfloop transitions, 905 changer transitions 125/1621 dead transitions. [2022-11-23 03:11:52,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 1621 transitions, 60389 flow [2022-11-23 03:11:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-11-23 03:11:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2022-11-23 03:11:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 8802 transitions. [2022-11-23 03:11:52,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4401 [2022-11-23 03:11:52,619 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 8802 transitions. [2022-11-23 03:11:52,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 8802 transitions. [2022-11-23 03:11:52,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:11:52,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 8802 transitions. [2022-11-23 03:11:52,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 70.416) internal successors, (8802), 125 states have internal predecessors, (8802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 160.0) internal successors, (20160), 126 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,653 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 160.0) internal successors, (20160), 126 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:11:52,653 INFO L175 Difference]: Start difference. First operand has 683 places, 1023 transitions, 27416 flow. Second operand 125 states and 8802 transitions. [2022-11-23 03:11:52,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 1621 transitions, 60389 flow [2022-11-23 03:12:21,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 765 places, 1621 transitions, 51917 flow, removed 4066 selfloop flow, removed 33 redundant places. [2022-11-23 03:12:21,511 INFO L231 Difference]: Finished difference. Result has 804 places, 1244 transitions, 37303 flow [2022-11-23 03:12:21,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=17852, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=713, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=125, PETRI_FLOW=37303, PETRI_PLACES=804, PETRI_TRANSITIONS=1244} [2022-11-23 03:12:21,512 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 780 predicate places. [2022-11-23 03:12:21,513 INFO L495 AbstractCegarLoop]: Abstraction has has 804 places, 1244 transitions, 37303 flow [2022-11-23 03:12:21,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:21,514 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:12:21,514 INFO L209 CegarLoopForPetriNet]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:21,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (29)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:21,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:12:21,720 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:12:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1988186115, now seen corresponding path program 21 times [2022-11-23 03:12:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:12:21,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847725761] [2022-11-23 03:12:21,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 03:12:21,721 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 [2022-11-23 03:12:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:12:21,722 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:12:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (30)] Waiting until timeout for monitored process [2022-11-23 03:12:21,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-11-23 03:12:21,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:12:21,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 03:12:21,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:12:22,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:12:26,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:12:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847725761] [2022-11-23 03:12:26,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847725761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:26,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:12:26,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56 [2022-11-23 03:12:26,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769844781] [2022-11-23 03:12:26,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:26,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-23 03:12:26,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:12:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-23 03:12:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2919, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 03:12:27,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:12:27,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 804 places, 1244 transitions, 37303 flow. Second operand has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:12:27,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:12:27,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:12:27,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:13:48,589 INFO L130 PetriNetUnfolder]: 5108/9595 cut-off events. [2022-11-23 03:13:48,589 INFO L131 PetriNetUnfolder]: For 11229432/11229432 co-relation queries the response was YES. [2022-11-23 03:13:48,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240812 conditions, 9595 events. 5108/9595 cut-off events. For 11229432/11229432 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 64366 event pairs, 65 based on Foata normal form. 96/9691 useless extension candidates. Maximal degree in co-relation 240529. Up to 3472 conditions per place. [2022-11-23 03:13:48,818 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 393 selfloop transitions, 1244 changer transitions 151/1788 dead transitions. [2022-11-23 03:13:48,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 1788 transitions, 68103 flow [2022-11-23 03:13:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-23 03:13:48,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2022-11-23 03:13:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 9042 transitions. [2022-11-23 03:13:48,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44150390625 [2022-11-23 03:13:48,830 INFO L72 ComplementDD]: Start complementDD. Operand 128 states and 9042 transitions. [2022-11-23 03:13:48,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 9042 transitions. [2022-11-23 03:13:48,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:13:48,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 128 states and 9042 transitions. [2022-11-23 03:13:48,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 129 states, 128 states have (on average 70.640625) internal successors, (9042), 128 states have internal predecessors, (9042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:48,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 129 states, 129 states have (on average 160.0) internal successors, (20640), 129 states have internal predecessors, (20640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:48,862 INFO L81 ComplementDD]: Finished complementDD. Result has 129 states, 129 states have (on average 160.0) internal successors, (20640), 129 states have internal predecessors, (20640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:13:48,862 INFO L175 Difference]: Start difference. First operand has 804 places, 1244 transitions, 37303 flow. Second operand 128 states and 9042 transitions. [2022-11-23 03:13:48,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 1788 transitions, 68103 flow [2022-11-23 03:14:27,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 1788 transitions, 58087 flow, removed 4853 selfloop flow, removed 40 redundant places. [2022-11-23 03:14:28,000 INFO L231 Difference]: Finished difference. Result has 895 places, 1404 transitions, 41680 flow [2022-11-23 03:14:28,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=22237, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1053, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=128, PETRI_FLOW=41680, PETRI_PLACES=895, PETRI_TRANSITIONS=1404} [2022-11-23 03:14:28,003 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 871 predicate places. [2022-11-23 03:14:28,003 INFO L495 AbstractCegarLoop]: Abstraction has has 895 places, 1404 transitions, 41680 flow [2022-11-23 03:14:28,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 67.20689655172414) internal successors, (3898), 58 states have internal predecessors, (3898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:28,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:14:28,004 INFO L209 CegarLoopForPetriNet]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:14:28,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (30)] Forceful destruction successful, exit code 0 [2022-11-23 03:14:28,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:14:28,206 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:14:28,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:14:28,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1416311400, now seen corresponding path program 22 times [2022-11-23 03:14:28,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:14:28,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582711881] [2022-11-23 03:14:28,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 03:14:28,207 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 [2022-11-23 03:14:28,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:14:28,208 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:14:28,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (31)] Waiting until timeout for monitored process [2022-11-23 03:14:28,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 03:14:28,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:14:28,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 03:14:28,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:14:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:14:29,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:14:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 03:14:32,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:14:32,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582711881] [2022-11-23 03:14:32,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582711881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:14:32,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:14:32,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58 [2022-11-23 03:14:32,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718732684] [2022-11-23 03:14:32,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:14:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-23 03:14:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:14:32,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-23 03:14:32,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=3083, Unknown=0, NotChecked=0, Total=3540 [2022-11-23 03:14:34,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:14:34,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 895 places, 1404 transitions, 41680 flow. Second operand has 60 states, 60 states have (on average 67.2) internal successors, (4032), 60 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:14:34,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:14:34,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:14:34,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:15:40,772 INFO L130 PetriNetUnfolder]: 5052/9483 cut-off events. [2022-11-23 03:15:40,772 INFO L131 PetriNetUnfolder]: For 12802292/12802292 co-relation queries the response was YES. [2022-11-23 03:15:40,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238289 conditions, 9483 events. 5052/9483 cut-off events. For 12802292/12802292 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 63931 event pairs, 35 based on Foata normal form. 56/9539 useless extension candidates. Maximal degree in co-relation 237991. Up to 3224 conditions per place. [2022-11-23 03:15:41,038 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 290 selfloop transitions, 1239 changer transitions 214/1743 dead transitions. [2022-11-23 03:15:41,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 998 places, 1743 transitions, 60215 flow [2022-11-23 03:15:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-11-23 03:15:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2022-11-23 03:15:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 7780 transitions. [2022-11-23 03:15:41,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4420454545454545 [2022-11-23 03:15:41,047 INFO L72 ComplementDD]: Start complementDD. Operand 110 states and 7780 transitions. [2022-11-23 03:15:41,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 7780 transitions. [2022-11-23 03:15:41,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:15:41,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 110 states and 7780 transitions. [2022-11-23 03:15:41,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 111 states, 110 states have (on average 70.72727272727273) internal successors, (7780), 110 states have internal predecessors, (7780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:41,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 111 states, 111 states have (on average 160.0) internal successors, (17760), 111 states have internal predecessors, (17760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:41,079 INFO L81 ComplementDD]: Finished complementDD. Result has 111 states, 111 states have (on average 160.0) internal successors, (17760), 111 states have internal predecessors, (17760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:41,079 INFO L175 Difference]: Start difference. First operand has 895 places, 1404 transitions, 41680 flow. Second operand 110 states and 7780 transitions. [2022-11-23 03:15:41,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 998 places, 1743 transitions, 60215 flow [2022-11-23 03:16:47,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 1743 transitions, 47773 flow, removed 5538 selfloop flow, removed 71 redundant places. [2022-11-23 03:16:47,135 INFO L231 Difference]: Finished difference. Result has 934 places, 1401 transitions, 30205 flow [2022-11-23 03:16:47,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=25550, PETRI_DIFFERENCE_MINUEND_PLACES=818, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=110, PETRI_FLOW=30205, PETRI_PLACES=934, PETRI_TRANSITIONS=1401} [2022-11-23 03:16:47,137 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 910 predicate places. [2022-11-23 03:16:47,137 INFO L495 AbstractCegarLoop]: Abstraction has has 934 places, 1401 transitions, 30205 flow [2022-11-23 03:16:47,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 67.2) internal successors, (4032), 60 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:47,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:16:47,138 INFO L209 CegarLoopForPetriNet]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:16:47,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (31)] Forceful destruction successful, exit code 0 [2022-11-23 03:16:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:16:47,352 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:16:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:16:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash -936950844, now seen corresponding path program 23 times [2022-11-23 03:16:47,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:16:47,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051332061] [2022-11-23 03:16:47,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 03:16:47,353 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 [2022-11-23 03:16:47,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:16:47,354 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:16:47,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (32)] Waiting until timeout for monitored process [2022-11-23 03:16:47,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2022-11-23 03:16:47,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 03:16:47,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-23 03:16:47,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:16:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:16:48,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:16:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:16:52,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 03:16:52,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051332061] [2022-11-23 03:16:52,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051332061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:16:52,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:16:52,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60 [2022-11-23 03:16:52,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74207494] [2022-11-23 03:16:52,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:16:52,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-23 03:16:52,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 03:16:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-23 03:16:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=3284, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 03:16:54,035 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2022-11-23 03:16:54,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 934 places, 1401 transitions, 30205 flow. Second operand has 62 states, 62 states have (on average 67.16129032258064) internal successors, (4164), 62 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:54,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:16:54,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2022-11-23 03:16:54,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:17:27,413 INFO L130 PetriNetUnfolder]: 5256/9823 cut-off events. [2022-11-23 03:17:27,413 INFO L131 PetriNetUnfolder]: For 12079840/12079840 co-relation queries the response was YES. [2022-11-23 03:17:27,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230227 conditions, 9823 events. 5256/9823 cut-off events. For 12079840/12079840 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 65485 event pairs, 20 based on Foata normal form. 64/9887 useless extension candidates. Maximal degree in co-relation 229944. Up to 3128 conditions per place. [2022-11-23 03:17:27,679 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 276 selfloop transitions, 1300 changer transitions 170/1746 dead transitions. [2022-11-23 03:17:27,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1021 places, 1746 transitions, 54049 flow [2022-11-23 03:17:27,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-23 03:17:27,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-23 03:17:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6231 transitions. [2022-11-23 03:17:27,688 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44254261363636366 [2022-11-23 03:17:27,688 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6231 transitions. [2022-11-23 03:17:27,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6231 transitions. [2022-11-23 03:17:27,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:17:27,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6231 transitions. [2022-11-23 03:17:27,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 70.80681818181819) internal successors, (6231), 88 states have internal predecessors, (6231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:17:27,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 160.0) internal successors, (14240), 89 states have internal predecessors, (14240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:17:27,714 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 160.0) internal successors, (14240), 89 states have internal predecessors, (14240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:17:27,714 INFO L175 Difference]: Start difference. First operand has 934 places, 1401 transitions, 30205 flow. Second operand 88 states and 6231 transitions. [2022-11-23 03:17:27,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1021 places, 1746 transitions, 54049 flow [2022-11-23 03:18:32,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 926 places, 1746 transitions, 49302 flow, removed 1326 selfloop flow, removed 95 redundant places. [2022-11-23 03:18:32,803 INFO L231 Difference]: Finished difference. Result has 958 places, 1452 transitions, 35247 flow [2022-11-23 03:18:32,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=26314, PETRI_DIFFERENCE_MINUEND_PLACES=839, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=35247, PETRI_PLACES=958, PETRI_TRANSITIONS=1452} [2022-11-23 03:18:32,806 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 934 predicate places. [2022-11-23 03:18:32,806 INFO L495 AbstractCegarLoop]: Abstraction has has 958 places, 1452 transitions, 35247 flow [2022-11-23 03:18:32,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 67.16129032258064) internal successors, (4164), 62 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:18:32,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:18:32,807 INFO L209 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:32,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (32)] Forceful destruction successful, exit code 0 [2022-11-23 03:18:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:18:33,023 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-11-23 03:18:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:18:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 570219886, now seen corresponding path program 24 times [2022-11-23 03:18:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 03:18:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240484268] [2022-11-23 03:18:33,024 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 03:18:33,024 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 [2022-11-23 03:18:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 03:18:33,025 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 03:18:33,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (33)] Waiting until timeout for monitored process [2022-11-23 03:18:33,323 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2022-11-23 03:18:33,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-23 03:18:33,323 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 03:18:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 03:18:33,565 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-23 03:18:33,565 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 03:18:33,566 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2022-11-23 03:18:33,583 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-11-23 03:18:33,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-11-23 03:18:33,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-11-23 03:18:33,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-11-23 03:18:33,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-11-23 03:18:33,584 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-23 03:18:33,585 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-23 03:18:33,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 (33)] Forceful destruction successful, exit code 0 [2022-11-23 03:18:33,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 03:18:33,802 INFO L444 BasicCegarLoop]: Path program histogram: [24, 2, 1, 1, 1, 1, 1, 1] [2022-11-23 03:18:33,807 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 03:18:33,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:18:33,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:18:33 BasicIcfg [2022-11-23 03:18:33,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:18:33,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:18:33,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:18:33,932 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:18:33,932 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:06:57" (3/4) ... [2022-11-23 03:18:33,936 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 03:18:33,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:18:33,937 INFO L158 Benchmark]: Toolchain (without parser) took 698126.73ms. Allocated memory was 69.2MB in the beginning and 5.3GB in the end (delta: 5.3GB). Free memory was 46.3MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2022-11-23 03:18:33,937 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:18:33,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 659.66ms. Allocated memory was 69.2MB in the beginning and 94.4MB in the end (delta: 25.2MB). Free memory was 46.3MB in the beginning and 73.2MB in the end (delta: -27.0MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-11-23 03:18:33,938 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.15ms. Allocated memory is still 94.4MB. Free memory was 73.2MB in the beginning and 71.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:18:33,938 INFO L158 Benchmark]: Boogie Preprocessor took 68.98ms. Allocated memory is still 94.4MB. Free memory was 71.1MB in the beginning and 69.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:18:33,938 INFO L158 Benchmark]: RCFGBuilder took 580.26ms. Allocated memory is still 94.4MB. Free memory was 69.0MB in the beginning and 54.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 03:18:33,939 INFO L158 Benchmark]: TraceAbstraction took 696720.84ms. Allocated memory was 94.4MB in the beginning and 5.3GB in the end (delta: 5.2GB). Free memory was 53.8MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. [2022-11-23 03:18:33,939 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 5.3GB. Free memory is still 2.0GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:18:33,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 69.2MB. Free memory is still 47.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 659.66ms. Allocated memory was 69.2MB in the beginning and 94.4MB in the end (delta: 25.2MB). Free memory was 46.3MB in the beginning and 73.2MB in the end (delta: -27.0MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.15ms. Allocated memory is still 94.4MB. Free memory was 73.2MB in the beginning and 71.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.98ms. Allocated memory is still 94.4MB. Free memory was 71.1MB in the beginning and 69.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 580.26ms. Allocated memory is still 94.4MB. Free memory was 69.0MB in the beginning and 54.3MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 696720.84ms. Allocated memory was 94.4MB in the beginning and 5.3GB in the end (delta: 5.2GB). Free memory was 53.8MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 3.3GB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 5.3GB. Free memory is still 2.0GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7s, 79 PlacesBefore, 24 PlacesAfterwards, 77 TransitionsBefore, 20 TransitionsAfterwards, 1298 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 1189 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1012, independent: 982, independent conditional: 0, independent unconditional: 982, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 829, independent: 815, independent conditional: 0, independent unconditional: 815, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 829, independent: 815, independent conditional: 0, independent unconditional: 815, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 80, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1012, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 829, unknown conditional: 0, unknown unconditional: 829] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, 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: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [#in~arg={0:0}, #in~argv={50:49}, argc=47, argv={50:49}, i=3, id1={3:0}, id2={7:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=0, unknown-#in~argc-unknown=47] [L696] 1 int k = 0; VAL [#in~arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={50:49}, arg={0:0}, argc=47, argv={50:49}, i=3, id1={3:0}, id2={7:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=1, unknown-#in~argc-unknown=47] [L704] 2 int k = 0; VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L716] 0 int condI = i >= (2*20 +6); VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={50:49}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, condI=0, i=7, id1={3:0}, id2={7:0}, j=6, k=1, k=0, unknown-#in~argc-unknown=47] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=2, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=6, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=7, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=10] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=11, k=10] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=14, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=16, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=17, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=19, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=20, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [#in~arg={0:0}, #in~arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [#in~arg={0:0}, #in~arg={0:0}, #in~argv={50:49}, arg={0:0}, arg={0:0}, argc=47, argv={50:49}, condI=0, condJ=1, i=45, id1={3:0}, id2={7:0}, j=46, k=20, k=20, unknown-#in~argc-unknown=47] - 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: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: 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. - UnprovableResult [Line: 713]: 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 5 procedures, 97 locations, 8 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: 696.4s, OverallIterations: 32, TraceHistogramMax: 20, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 639.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.8s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 19711 SdHoareTripleChecker+Valid, 67.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19457 mSDsluCounter, 7983 SdHoareTripleChecker+Invalid, 59.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7929 mSDsCounter, 1636 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60437 IncrementalHoareTripleChecker+Invalid, 62082 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1636 mSolverCounterUnsat, 54 mSDtfsCounter, 60437 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1876 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 1627 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47717 ImplicationChecksByTransitivity, 288.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41680occurred in iteration=29, InterpolantAutomatonStates: 1122, 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: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 553 NumberOfCodeBlocks, 553 NumberOfCodeBlocksAsserted, 111 NumberOfCheckSat, 876 ConstructedInterpolants, 6 QuantifiedInterpolants, 6971 SizeOfPredicates, 275 NumberOfNonLiveVariables, 2801 ConjunctsInSsa, 400 ConjunctsInUnsatCore, 50 InterpolantComputations, 12 PerfectInterpolantSequences, 18/2520 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 [2022-11-23 03:18:33,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb866d99-5e2d-4197-8c3f-9f10d2dede40/bin/uautomizer-QkZJyEgLgS/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