./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R --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 a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d --- 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-38b53e6 [2022-11-25 15:25:51,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:25:51,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:25:51,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:25:51,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:25:51,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:25:51,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:25:51,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:25:51,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:25:51,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:25:51,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:25:51,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:25:51,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:25:51,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:25:51,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:25:51,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:25:51,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:25:51,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:25:51,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:25:51,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:25:51,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:25:51,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:25:52,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:25:52,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:25:52,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:25:52,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:25:52,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:25:52,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:25:52,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:25:52,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:25:52,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:25:52,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:25:52,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:25:52,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:25:52,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:25:52,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:25:52,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:25:52,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:25:52,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:25:52,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:25:52,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:25:52,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 15:25:52,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:25:52,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:25:52,071 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:25:52,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:25:52,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:25:52,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:25:52,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:25:52,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:25:52,074 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:25:52,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:25:52,076 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:25:52,076 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:25:52,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:25:52,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:25:52,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:25:52,077 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 15:25:52,078 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 15:25:52,078 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 15:25:52,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:25:52,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 15:25:52,079 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:25:52,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:25:52,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:25:52,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:25:52,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:25:52,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:25:52,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:25:52,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:25:52,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:25:52,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:25:52,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:25:52,082 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:25:52,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:25:52,083 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_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9552a698db9701543deeff63aa990ab8fc4764b65dba5035623425bdf77554d [2022-11-25 15:25:52,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:25:52,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:25:52,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:25:52,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:25:52,414 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:25:52,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-11-25 15:25:55,467 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:25:55,785 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:25:55,785 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i [2022-11-25 15:25:55,804 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/data/3571d1432/a0509f17e1244ee4a3287017a44c3737/FLAGc017636ec [2022-11-25 15:25:55,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/data/3571d1432/a0509f17e1244ee4a3287017a44c3737 [2022-11-25 15:25:55,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:25:55,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:25:55,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:25:55,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:25:55,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:25:55,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:25:55" (1/1) ... [2022-11-25 15:25:55,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2b33ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:55, skipping insertion in model container [2022-11-25 15:25:55,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:25:55" (1/1) ... [2022-11-25 15:25:55,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:25:55,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:25:56,753 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-11-25 15:25:56,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:25:56,827 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:25:56,923 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_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/sv-benchmarks/c/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2022-11-25 15:25:56,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:25:57,092 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:25:57,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57 WrapperNode [2022-11-25 15:25:57,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:25:57,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:25:57,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:25:57,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:25:57,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,166 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 201 [2022-11-25 15:25:57,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:25:57,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:25:57,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:25:57,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:25:57,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:25:57,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:25:57,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:25:57,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:25:57,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (1/1) ... [2022-11-25 15:25:57,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:25:57,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:25:57,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:25:57,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:25:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2022-11-25 15:25:57,310 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2022-11-25 15:25:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:25:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:25:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2022-11-25 15:25:57,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2022-11-25 15:25:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 15:25:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:25:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 15:25:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:25:57,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:25:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:25:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:25:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:25:57,317 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:25:57,674 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:25:57,679 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:25:58,070 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:25:58,080 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:25:58,080 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 15:25:58,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:25:58 BoogieIcfgContainer [2022-11-25 15:25:58,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:25:58,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:25:58,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:25:58,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:25:58,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:25:55" (1/3) ... [2022-11-25 15:25:58,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a9f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:25:58, skipping insertion in model container [2022-11-25 15:25:58,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:25:57" (2/3) ... [2022-11-25 15:25:58,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a9f528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:25:58, skipping insertion in model container [2022-11-25 15:25:58,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:25:58" (3/3) ... [2022-11-25 15:25:58,096 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2022-11-25 15:25:58,122 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:25:58,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2022-11-25 15:25:58,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:25:58,251 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-25 15:25:58,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 353 transitions, 736 flow [2022-11-25 15:25:58,441 INFO L130 PetriNetUnfolder]: 33/371 cut-off events. [2022-11-25 15:25:58,442 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:25:58,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 371 events. 33/371 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1012 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 243. Up to 11 conditions per place. [2022-11-25 15:25:58,451 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 353 transitions, 736 flow [2022-11-25 15:25:58,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 248 transitions, 513 flow [2022-11-25 15:25:58,462 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:25:58,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 248 transitions, 513 flow [2022-11-25 15:25:58,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 248 transitions, 513 flow [2022-11-25 15:25:58,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 248 transitions, 513 flow [2022-11-25 15:25:58,552 INFO L130 PetriNetUnfolder]: 33/371 cut-off events. [2022-11-25 15:25:58,553 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:25:58,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 371 events. 33/371 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1009 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 243. Up to 11 conditions per place. [2022-11-25 15:25:58,563 INFO L119 LiptonReduction]: Number of co-enabled transitions 12794 [2022-11-25 15:26:09,620 INFO L134 LiptonReduction]: Checked pairs total: 18116 [2022-11-25 15:26:09,620 INFO L136 LiptonReduction]: Total number of compositions: 308 [2022-11-25 15:26:09,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:26:09,644 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;@8f34b36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:26:09,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-25 15:26:09,646 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 15:26:09,646 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:26:09,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:09,647 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 15:26:09,648 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1079, now seen corresponding path program 1 times [2022-11-25 15:26:09,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:09,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316491299] [2022-11-25 15:26:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:09,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:09,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:09,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316491299] [2022-11-25 15:26:09,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316491299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:09,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:09,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 15:26:09,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340185800] [2022-11-25 15:26:09,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:09,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:26:09,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:09,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:26:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:26:09,930 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 661 [2022-11-25 15:26:09,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 127 flow. Second operand has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:09,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:09,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 661 [2022-11-25 15:26:09,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:10,268 INFO L130 PetriNetUnfolder]: 809/1314 cut-off events. [2022-11-25 15:26:10,269 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-25 15:26:10,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2568 conditions, 1314 events. 809/1314 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6546 event pairs, 523 based on Foata normal form. 0/658 useless extension candidates. Maximal degree in co-relation 2389. Up to 1208 conditions per place. [2022-11-25 15:26:10,282 INFO L137 encePairwiseOnDemand]: 654/661 looper letters, 35 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2022-11-25 15:26:10,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 183 flow [2022-11-25 15:26:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:26:10,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 15:26:10,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 688 transitions. [2022-11-25 15:26:10,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5204236006051437 [2022-11-25 15:26:10,311 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 688 transitions. [2022-11-25 15:26:10,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 688 transitions. [2022-11-25 15:26:10,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:10,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 688 transitions. [2022-11-25 15:26:10,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 344.0) internal successors, (688), 2 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:10,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:10,342 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:10,344 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 127 flow. Second operand 2 states and 688 transitions. [2022-11-25 15:26:10,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 183 flow [2022-11-25 15:26:10,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 179 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:10,354 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 109 flow [2022-11-25 15:26:10,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=109, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2022-11-25 15:26:10,360 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2022-11-25 15:26:10,360 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 109 flow [2022-11-25 15:26:10,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 323.5) internal successors, (647), 2 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:10,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:10,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:26:10,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:26:10,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1072355, now seen corresponding path program 1 times [2022-11-25 15:26:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:10,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073198949] [2022-11-25 15:26:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:10,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:10,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:10,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:10,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073198949] [2022-11-25 15:26:10,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073198949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:10,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:10,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:26:10,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586447723] [2022-11-25 15:26:10,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:10,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:10,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:10,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:10,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:10,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 661 [2022-11-25 15:26:10,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:10,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:10,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 661 [2022-11-25 15:26:10,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:11,100 INFO L130 PetriNetUnfolder]: 1935/3130 cut-off events. [2022-11-25 15:26:11,101 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-25 15:26:11,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6020 conditions, 3130 events. 1935/3130 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 16802 event pairs, 701 based on Foata normal form. 0/1525 useless extension candidates. Maximal degree in co-relation 6016. Up to 1657 conditions per place. [2022-11-25 15:26:11,156 INFO L137 encePairwiseOnDemand]: 652/661 looper letters, 58 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2022-11-25 15:26:11,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 308 flow [2022-11-25 15:26:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1006 transitions. [2022-11-25 15:26:11,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5073121533030761 [2022-11-25 15:26:11,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1006 transitions. [2022-11-25 15:26:11,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1006 transitions. [2022-11-25 15:26:11,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:11,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1006 transitions. [2022-11-25 15:26:11,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,175 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 109 flow. Second operand 3 states and 1006 transitions. [2022-11-25 15:26:11,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 308 flow [2022-11-25 15:26:11,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:26:11,182 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 167 flow [2022-11-25 15:26:11,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2022-11-25 15:26:11,183 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2022-11-25 15:26:11,183 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 167 flow [2022-11-25 15:26:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:11,184 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:26:11,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:26:11,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:11,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1074526, now seen corresponding path program 1 times [2022-11-25 15:26:11,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:11,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705974828] [2022-11-25 15:26:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:11,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:11,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705974828] [2022-11-25 15:26:11,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705974828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:11,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:11,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:11,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933599742] [2022-11-25 15:26:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:11,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:11,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 661 [2022-11-25 15:26:11,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:11,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 661 [2022-11-25 15:26:11,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:11,785 INFO L130 PetriNetUnfolder]: 1552/2460 cut-off events. [2022-11-25 15:26:11,785 INFO L131 PetriNetUnfolder]: For 592/661 co-relation queries the response was YES. [2022-11-25 15:26:11,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5486 conditions, 2460 events. 1552/2460 cut-off events. For 592/661 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12144 event pairs, 807 based on Foata normal form. 7/1416 useless extension candidates. Maximal degree in co-relation 5480. Up to 2270 conditions per place. [2022-11-25 15:26:11,801 INFO L137 encePairwiseOnDemand]: 658/661 looper letters, 39 selfloop transitions, 0 changer transitions 2/55 dead transitions. [2022-11-25 15:26:11,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 251 flow [2022-11-25 15:26:11,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 988 transitions. [2022-11-25 15:26:11,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4982349974785678 [2022-11-25 15:26:11,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 988 transitions. [2022-11-25 15:26:11,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 988 transitions. [2022-11-25 15:26:11,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:11,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 988 transitions. [2022-11-25 15:26:11,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.3333333333333) internal successors, (988), 3 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,814 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,814 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 167 flow. Second operand 3 states and 988 transitions. [2022-11-25 15:26:11,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 55 transitions, 251 flow [2022-11-25 15:26:11,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:11,818 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 151 flow [2022-11-25 15:26:11,819 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2022-11-25 15:26:11,819 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-11-25 15:26:11,820 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 151 flow [2022-11-25 15:26:11,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,820 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:11,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:26:11,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:26:11,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:11,822 INFO L85 PathProgramCache]: Analyzing trace with hash 33060855, now seen corresponding path program 1 times [2022-11-25 15:26:11,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:11,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646002928] [2022-11-25 15:26:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:11,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:11,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646002928] [2022-11-25 15:26:11,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646002928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:11,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:11,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258700034] [2022-11-25 15:26:11,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:11,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:11,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:11,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:11,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:11,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 661 [2022-11-25 15:26:11,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:11,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:11,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 661 [2022-11-25 15:26:11,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:12,324 INFO L130 PetriNetUnfolder]: 1607/2532 cut-off events. [2022-11-25 15:26:12,325 INFO L131 PetriNetUnfolder]: For 510/570 co-relation queries the response was YES. [2022-11-25 15:26:12,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5612 conditions, 2532 events. 1607/2532 cut-off events. For 510/570 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12579 event pairs, 651 based on Foata normal form. 15/1431 useless extension candidates. Maximal degree in co-relation 5605. Up to 1759 conditions per place. [2022-11-25 15:26:12,341 INFO L137 encePairwiseOnDemand]: 651/661 looper letters, 46 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2022-11-25 15:26:12,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 305 flow [2022-11-25 15:26:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2022-11-25 15:26:12,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4896621280887544 [2022-11-25 15:26:12,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2022-11-25 15:26:12,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2022-11-25 15:26:12,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:12,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2022-11-25 15:26:12,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,355 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 151 flow. Second operand 3 states and 971 transitions. [2022-11-25 15:26:12,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 305 flow [2022-11-25 15:26:12,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 297 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 15:26:12,359 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 211 flow [2022-11-25 15:26:12,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2022-11-25 15:26:12,360 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-11-25 15:26:12,360 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 211 flow [2022-11-25 15:26:12,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:12,361 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:26:12,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:26:12,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:12,362 INFO L85 PathProgramCache]: Analyzing trace with hash 33060890, now seen corresponding path program 1 times [2022-11-25 15:26:12,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:12,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762794786] [2022-11-25 15:26:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:12,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:12,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762794786] [2022-11-25 15:26:12,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762794786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:12,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:12,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:26:12,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441593706] [2022-11-25 15:26:12,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:12,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:12,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:12,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:12,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:12,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 661 [2022-11-25 15:26:12,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:12,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 661 [2022-11-25 15:26:12,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:12,917 INFO L130 PetriNetUnfolder]: 1481/2293 cut-off events. [2022-11-25 15:26:12,918 INFO L131 PetriNetUnfolder]: For 508/562 co-relation queries the response was YES. [2022-11-25 15:26:12,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5770 conditions, 2293 events. 1481/2293 cut-off events. For 508/562 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10773 event pairs, 735 based on Foata normal form. 48/1500 useless extension candidates. Maximal degree in co-relation 5762. Up to 2148 conditions per place. [2022-11-25 15:26:12,934 INFO L137 encePairwiseOnDemand]: 658/661 looper letters, 41 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2022-11-25 15:26:12,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 283 flow [2022-11-25 15:26:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2022-11-25 15:26:12,938 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4987392839132627 [2022-11-25 15:26:12,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2022-11-25 15:26:12,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2022-11-25 15:26:12,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:12,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2022-11-25 15:26:12,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,948 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 211 flow. Second operand 3 states and 989 transitions. [2022-11-25 15:26:12,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 283 flow [2022-11-25 15:26:12,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:12,952 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 185 flow [2022-11-25 15:26:12,952 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2022-11-25 15:26:12,953 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2022-11-25 15:26:12,953 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 185 flow [2022-11-25 15:26:12,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:12,954 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:12,954 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-11-25 15:26:12,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:26:12,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:12,955 INFO L85 PathProgramCache]: Analyzing trace with hash 33060891, now seen corresponding path program 1 times [2022-11-25 15:26:12,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:12,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555015898] [2022-11-25 15:26:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:12,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:13,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555015898] [2022-11-25 15:26:13,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555015898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:13,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:13,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:26:13,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867345146] [2022-11-25 15:26:13,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:13,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:13,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:13,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:13,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:13,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 661 [2022-11-25 15:26:13,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:13,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:13,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 661 [2022-11-25 15:26:13,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:13,600 INFO L130 PetriNetUnfolder]: 1714/2760 cut-off events. [2022-11-25 15:26:13,601 INFO L131 PetriNetUnfolder]: For 416/571 co-relation queries the response was YES. [2022-11-25 15:26:13,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 2760 events. 1714/2760 cut-off events. For 416/571 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14399 event pairs, 734 based on Foata normal form. 57/1863 useless extension candidates. Maximal degree in co-relation 6465. Up to 1566 conditions per place. [2022-11-25 15:26:13,625 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 72 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2022-11-25 15:26:13,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 451 flow [2022-11-25 15:26:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1011 transitions. [2022-11-25 15:26:13,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5098335854765507 [2022-11-25 15:26:13,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1011 transitions. [2022-11-25 15:26:13,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1011 transitions. [2022-11-25 15:26:13,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:13,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1011 transitions. [2022-11-25 15:26:13,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:13,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:13,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:13,638 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 185 flow. Second operand 3 states and 1011 transitions. [2022-11-25 15:26:13,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 89 transitions, 451 flow [2022-11-25 15:26:13,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 89 transitions, 450 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:26:13,641 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 224 flow [2022-11-25 15:26:13,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2022-11-25 15:26:13,642 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-11-25 15:26:13,642 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 224 flow [2022-11-25 15:26:13,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:13,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:13,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:26:13,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:26:13,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1024940263, now seen corresponding path program 1 times [2022-11-25 15:26:13,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:13,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151877740] [2022-11-25 15:26:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:13,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:13,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:13,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151877740] [2022-11-25 15:26:13,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151877740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:13,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:13,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:13,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410780915] [2022-11-25 15:26:13,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:13,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:26:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:26:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:26:13,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 661 [2022-11-25 15:26:13,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 224 flow. Second operand has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:13,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:13,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 661 [2022-11-25 15:26:13,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:14,551 INFO L130 PetriNetUnfolder]: 2297/3660 cut-off events. [2022-11-25 15:26:14,551 INFO L131 PetriNetUnfolder]: For 703/858 co-relation queries the response was YES. [2022-11-25 15:26:14,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8684 conditions, 3660 events. 2297/3660 cut-off events. For 703/858 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 20152 event pairs, 966 based on Foata normal form. 57/2543 useless extension candidates. Maximal degree in co-relation 8675. Up to 1965 conditions per place. [2022-11-25 15:26:14,573 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 102 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2022-11-25 15:26:14,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 120 transitions, 654 flow [2022-11-25 15:26:14,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:26:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:26:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1351 transitions. [2022-11-25 15:26:14,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5109682299546142 [2022-11-25 15:26:14,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1351 transitions. [2022-11-25 15:26:14,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1351 transitions. [2022-11-25 15:26:14,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:14,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1351 transitions. [2022-11-25 15:26:14,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 337.75) internal successors, (1351), 4 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:14,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:14,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:14,589 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 224 flow. Second operand 4 states and 1351 transitions. [2022-11-25 15:26:14,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 120 transitions, 654 flow [2022-11-25 15:26:14,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 120 transitions, 650 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:26:14,593 INFO L231 Difference]: Finished difference. Result has 57 places, 61 transitions, 270 flow [2022-11-25 15:26:14,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=57, PETRI_TRANSITIONS=61} [2022-11-25 15:26:14,594 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-11-25 15:26:14,594 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 61 transitions, 270 flow [2022-11-25 15:26:14,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:14,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:14,595 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:26:14,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:26:14,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1024940264, now seen corresponding path program 1 times [2022-11-25 15:26:14,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725395714] [2022-11-25 15:26:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:14,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:14,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:14,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725395714] [2022-11-25 15:26:14,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725395714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:14,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:14,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:14,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372783262] [2022-11-25 15:26:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:26:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:14,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:26:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:26:14,915 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 661 [2022-11-25 15:26:14,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 61 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:14,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:14,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 661 [2022-11-25 15:26:14,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:15,458 INFO L130 PetriNetUnfolder]: 1999/3228 cut-off events. [2022-11-25 15:26:15,459 INFO L131 PetriNetUnfolder]: For 795/950 co-relation queries the response was YES. [2022-11-25 15:26:15,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7831 conditions, 3228 events. 1999/3228 cut-off events. For 795/950 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17616 event pairs, 891 based on Foata normal form. 180/2424 useless extension candidates. Maximal degree in co-relation 7820. Up to 2003 conditions per place. [2022-11-25 15:26:15,481 INFO L137 encePairwiseOnDemand]: 657/661 looper letters, 75 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2022-11-25 15:26:15,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 526 flow [2022-11-25 15:26:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:26:15,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:26:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1324 transitions. [2022-11-25 15:26:15,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5007564296520424 [2022-11-25 15:26:15,486 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1324 transitions. [2022-11-25 15:26:15,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1324 transitions. [2022-11-25 15:26:15,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:15,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1324 transitions. [2022-11-25 15:26:15,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.0) internal successors, (1324), 4 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:15,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:15,497 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:15,497 INFO L175 Difference]: Start difference. First operand has 57 places, 61 transitions, 270 flow. Second operand 4 states and 1324 transitions. [2022-11-25 15:26:15,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 526 flow [2022-11-25 15:26:15,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:26:15,505 INFO L231 Difference]: Finished difference. Result has 58 places, 60 transitions, 272 flow [2022-11-25 15:26:15,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=58, PETRI_TRANSITIONS=60} [2022-11-25 15:26:15,509 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2022-11-25 15:26:15,510 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 60 transitions, 272 flow [2022-11-25 15:26:15,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 316.25) internal successors, (1265), 4 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:15,511 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:15,511 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:26:15,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:26:15,512 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1706738947, now seen corresponding path program 1 times [2022-11-25 15:26:15,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009263310] [2022-11-25 15:26:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:15,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:15,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:15,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009263310] [2022-11-25 15:26:15,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009263310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:15,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:15,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:26:15,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143410755] [2022-11-25 15:26:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:15,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:26:15,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:26:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:26:15,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 661 [2022-11-25 15:26:15,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 60 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:15,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:15,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 661 [2022-11-25 15:26:15,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:16,219 INFO L130 PetriNetUnfolder]: 2115/3456 cut-off events. [2022-11-25 15:26:16,219 INFO L131 PetriNetUnfolder]: For 840/1038 co-relation queries the response was YES. [2022-11-25 15:26:16,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 3456 events. 2115/3456 cut-off events. For 840/1038 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 19177 event pairs, 579 based on Foata normal form. 71/2552 useless extension candidates. Maximal degree in co-relation 8260. Up to 1708 conditions per place. [2022-11-25 15:26:16,241 INFO L137 encePairwiseOnDemand]: 651/661 looper letters, 82 selfloop transitions, 19 changer transitions 0/114 dead transitions. [2022-11-25 15:26:16,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 114 transitions, 651 flow [2022-11-25 15:26:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:26:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:26:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1640 transitions. [2022-11-25 15:26:16,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4962178517397882 [2022-11-25 15:26:16,290 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1640 transitions. [2022-11-25 15:26:16,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1640 transitions. [2022-11-25 15:26:16,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:16,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1640 transitions. [2022-11-25 15:26:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:16,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:16,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:16,301 INFO L175 Difference]: Start difference. First operand has 58 places, 60 transitions, 272 flow. Second operand 5 states and 1640 transitions. [2022-11-25 15:26:16,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 114 transitions, 651 flow [2022-11-25 15:26:16,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 114 transitions, 645 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:16,308 INFO L231 Difference]: Finished difference. Result has 64 places, 74 transitions, 417 flow [2022-11-25 15:26:16,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=64, PETRI_TRANSITIONS=74} [2022-11-25 15:26:16,310 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2022-11-25 15:26:16,311 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 74 transitions, 417 flow [2022-11-25 15:26:16,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.5) internal successors, (1254), 4 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:16,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:16,312 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:16,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:26:16,315 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:16,315 INFO L85 PathProgramCache]: Analyzing trace with hash -470829829, now seen corresponding path program 1 times [2022-11-25 15:26:16,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:16,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170114217] [2022-11-25 15:26:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:16,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:16,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:16,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170114217] [2022-11-25 15:26:16,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170114217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:16,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:16,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:16,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075456433] [2022-11-25 15:26:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:16,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:16,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:16,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:16,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:16,462 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 661 [2022-11-25 15:26:16,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 74 transitions, 417 flow. Second operand has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:16,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:16,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 661 [2022-11-25 15:26:16,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:16,982 INFO L130 PetriNetUnfolder]: 1822/2959 cut-off events. [2022-11-25 15:26:16,982 INFO L131 PetriNetUnfolder]: For 2098/2274 co-relation queries the response was YES. [2022-11-25 15:26:16,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9301 conditions, 2959 events. 1822/2959 cut-off events. For 2098/2274 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 15508 event pairs, 636 based on Foata normal form. 226/2680 useless extension candidates. Maximal degree in co-relation 9286. Up to 2195 conditions per place. [2022-11-25 15:26:16,999 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 81 selfloop transitions, 11 changer transitions 0/105 dead transitions. [2022-11-25 15:26:17,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 764 flow [2022-11-25 15:26:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 997 transitions. [2022-11-25 15:26:17,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.502773575390822 [2022-11-25 15:26:17,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 997 transitions. [2022-11-25 15:26:17,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 997 transitions. [2022-11-25 15:26:17,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:17,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 997 transitions. [2022-11-25 15:26:17,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 332.3333333333333) internal successors, (997), 3 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,012 INFO L175 Difference]: Start difference. First operand has 64 places, 74 transitions, 417 flow. Second operand 3 states and 997 transitions. [2022-11-25 15:26:17,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 764 flow [2022-11-25 15:26:17,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 764 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:26:17,022 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 528 flow [2022-11-25 15:26:17,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=528, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2022-11-25 15:26:17,024 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2022-11-25 15:26:17,024 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 528 flow [2022-11-25 15:26:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.3333333333333) internal successors, (949), 3 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:17,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:26:17,025 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash 115639474, now seen corresponding path program 1 times [2022-11-25 15:26:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:17,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183229635] [2022-11-25 15:26:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:17,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:17,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:17,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183229635] [2022-11-25 15:26:17,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183229635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:17,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:17,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:26:17,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552264134] [2022-11-25 15:26:17,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:17,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:17,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 661 [2022-11-25 15:26:17,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 528 flow. Second operand has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:17,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 661 [2022-11-25 15:26:17,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:17,449 INFO L130 PetriNetUnfolder]: 958/1596 cut-off events. [2022-11-25 15:26:17,449 INFO L131 PetriNetUnfolder]: For 2781/2785 co-relation queries the response was YES. [2022-11-25 15:26:17,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5358 conditions, 1596 events. 958/1596 cut-off events. For 2781/2785 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7784 event pairs, 216 based on Foata normal form. 133/1639 useless extension candidates. Maximal degree in co-relation 5341. Up to 1072 conditions per place. [2022-11-25 15:26:17,460 INFO L137 encePairwiseOnDemand]: 658/661 looper letters, 104 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2022-11-25 15:26:17,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 119 transitions, 978 flow [2022-11-25 15:26:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1007 transitions. [2022-11-25 15:26:17,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.507816439737771 [2022-11-25 15:26:17,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1007 transitions. [2022-11-25 15:26:17,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1007 transitions. [2022-11-25 15:26:17,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:17,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1007 transitions. [2022-11-25 15:26:17,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,471 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 528 flow. Second operand 3 states and 1007 transitions. [2022-11-25 15:26:17,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 119 transitions, 978 flow [2022-11-25 15:26:17,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 119 transitions, 956 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-25 15:26:17,486 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 477 flow [2022-11-25 15:26:17,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2022-11-25 15:26:17,486 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 17 predicate places. [2022-11-25 15:26:17,487 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 477 flow [2022-11-25 15:26:17,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.6666666666667) internal successors, (959), 3 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:17,487 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:17,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:26:17,488 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:17,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1698480784, now seen corresponding path program 1 times [2022-11-25 15:26:17,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:17,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686513956] [2022-11-25 15:26:17,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:17,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:17,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:17,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686513956] [2022-11-25 15:26:17,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686513956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:17,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:17,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:26:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914990023] [2022-11-25 15:26:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:17,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:17,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 661 [2022-11-25 15:26:17,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:17,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 661 [2022-11-25 15:26:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:17,955 INFO L130 PetriNetUnfolder]: 779/1376 cut-off events. [2022-11-25 15:26:17,956 INFO L131 PetriNetUnfolder]: For 2043/2043 co-relation queries the response was YES. [2022-11-25 15:26:17,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4720 conditions, 1376 events. 779/1376 cut-off events. For 2043/2043 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6579 event pairs, 255 based on Foata normal form. 90/1407 useless extension candidates. Maximal degree in co-relation 4703. Up to 964 conditions per place. [2022-11-25 15:26:17,967 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 60 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-11-25 15:26:17,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 581 flow [2022-11-25 15:26:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:17,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 969 transitions. [2022-11-25 15:26:17,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4886535552193646 [2022-11-25 15:26:17,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 969 transitions. [2022-11-25 15:26:17,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 969 transitions. [2022-11-25 15:26:17,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:17,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 969 transitions. [2022-11-25 15:26:17,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,981 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 477 flow. Second operand 3 states and 969 transitions. [2022-11-25 15:26:17,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 581 flow [2022-11-25 15:26:17,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 563 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 15:26:17,989 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 415 flow [2022-11-25 15:26:17,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2022-11-25 15:26:17,991 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2022-11-25 15:26:17,991 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 415 flow [2022-11-25 15:26:17,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:17,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:17,992 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:17,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:26:17,992 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:17,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:17,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1495825924, now seen corresponding path program 1 times [2022-11-25 15:26:17,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:17,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938408391] [2022-11-25 15:26:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:18,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938408391] [2022-11-25 15:26:18,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938408391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:18,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:18,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:26:18,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989810791] [2022-11-25 15:26:18,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:18,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:18,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:18,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 320 out of 661 [2022-11-25 15:26:18,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 68 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:18,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 320 of 661 [2022-11-25 15:26:18,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:18,308 INFO L130 PetriNetUnfolder]: 328/633 cut-off events. [2022-11-25 15:26:18,308 INFO L131 PetriNetUnfolder]: For 947/947 co-relation queries the response was YES. [2022-11-25 15:26:18,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 633 events. 328/633 cut-off events. For 947/947 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2631 event pairs, 81 based on Foata normal form. 28/634 useless extension candidates. Maximal degree in co-relation 1956. Up to 433 conditions per place. [2022-11-25 15:26:18,312 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 50 selfloop transitions, 5 changer transitions 3/68 dead transitions. [2022-11-25 15:26:18,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 470 flow [2022-11-25 15:26:18,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2022-11-25 15:26:18,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5083207261724659 [2022-11-25 15:26:18,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2022-11-25 15:26:18,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2022-11-25 15:26:18,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:18,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2022-11-25 15:26:18,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,323 INFO L175 Difference]: Start difference. First operand has 65 places, 68 transitions, 415 flow. Second operand 3 states and 1008 transitions. [2022-11-25 15:26:18,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 470 flow [2022-11-25 15:26:18,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 68 transitions, 413 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-25 15:26:18,328 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 268 flow [2022-11-25 15:26:18,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2022-11-25 15:26:18,330 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2022-11-25 15:26:18,330 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 268 flow [2022-11-25 15:26:18,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:18,331 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:26:18,331 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:18,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash -54310246, now seen corresponding path program 1 times [2022-11-25 15:26:18,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:18,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034045124] [2022-11-25 15:26:18,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:18,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:18,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034045124] [2022-11-25 15:26:18,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034045124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:18,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:18,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:18,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568896378] [2022-11-25 15:26:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:18,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:18,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:18,507 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 661 [2022-11-25 15:26:18,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:18,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 661 [2022-11-25 15:26:18,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:18,702 INFO L130 PetriNetUnfolder]: 370/788 cut-off events. [2022-11-25 15:26:18,702 INFO L131 PetriNetUnfolder]: For 534/534 co-relation queries the response was YES. [2022-11-25 15:26:18,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 788 events. 370/788 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4127 event pairs, 119 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 2183. Up to 447 conditions per place. [2022-11-25 15:26:18,706 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 66 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2022-11-25 15:26:18,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 605 flow [2022-11-25 15:26:18,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:18,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1000 transitions. [2022-11-25 15:26:18,710 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5042864346949067 [2022-11-25 15:26:18,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1000 transitions. [2022-11-25 15:26:18,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1000 transitions. [2022-11-25 15:26:18,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:18,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1000 transitions. [2022-11-25 15:26:18,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.3333333333333) internal successors, (1000), 3 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,718 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 268 flow. Second operand 3 states and 1000 transitions. [2022-11-25 15:26:18,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 605 flow [2022-11-25 15:26:18,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 573 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 15:26:18,723 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 343 flow [2022-11-25 15:26:18,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2022-11-25 15:26:18,724 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2022-11-25 15:26:18,725 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 343 flow [2022-11-25 15:26:18,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.3333333333333) internal successors, (955), 3 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:18,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:18,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:26:18,726 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 202611931, now seen corresponding path program 1 times [2022-11-25 15:26:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:18,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139315752] [2022-11-25 15:26:18,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:18,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:18,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:18,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139315752] [2022-11-25 15:26:18,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139315752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:18,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:18,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685464303] [2022-11-25 15:26:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:18,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:18,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 661 [2022-11-25 15:26:18,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:18,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:18,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 661 [2022-11-25 15:26:18,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:19,121 INFO L130 PetriNetUnfolder]: 370/781 cut-off events. [2022-11-25 15:26:19,121 INFO L131 PetriNetUnfolder]: For 802/802 co-relation queries the response was YES. [2022-11-25 15:26:19,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2283 conditions, 781 events. 370/781 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4033 event pairs, 119 based on Foata normal form. 7/687 useless extension candidates. Maximal degree in co-relation 2267. Up to 337 conditions per place. [2022-11-25 15:26:19,126 INFO L137 encePairwiseOnDemand]: 658/661 looper letters, 67 selfloop transitions, 6 changer transitions 0/82 dead transitions. [2022-11-25 15:26:19,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 622 flow [2022-11-25 15:26:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1008 transitions. [2022-11-25 15:26:19,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5083207261724659 [2022-11-25 15:26:19,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1008 transitions. [2022-11-25 15:26:19,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1008 transitions. [2022-11-25 15:26:19,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:19,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1008 transitions. [2022-11-25 15:26:19,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,138 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 343 flow. Second operand 3 states and 1008 transitions. [2022-11-25 15:26:19,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 622 flow [2022-11-25 15:26:19,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 82 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:19,144 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 337 flow [2022-11-25 15:26:19,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=337, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2022-11-25 15:26:19,145 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2022-11-25 15:26:19,145 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 337 flow [2022-11-25 15:26:19,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:19,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:19,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:26:19,147 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:19,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:19,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1986018013, now seen corresponding path program 1 times [2022-11-25 15:26:19,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:19,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483679551] [2022-11-25 15:26:19,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:19,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:19,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:19,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483679551] [2022-11-25 15:26:19,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483679551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:19,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:19,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956782020] [2022-11-25 15:26:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:19,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:19,299 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 661 [2022-11-25 15:26:19,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:19,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 661 [2022-11-25 15:26:19,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:19,531 INFO L130 PetriNetUnfolder]: 364/704 cut-off events. [2022-11-25 15:26:19,531 INFO L131 PetriNetUnfolder]: For 727/727 co-relation queries the response was YES. [2022-11-25 15:26:19,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 704 events. 364/704 cut-off events. For 727/727 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3197 event pairs, 189 based on Foata normal form. 5/602 useless extension candidates. Maximal degree in co-relation 2077. Up to 614 conditions per place. [2022-11-25 15:26:19,535 INFO L137 encePairwiseOnDemand]: 658/661 looper letters, 39 selfloop transitions, 4 changer transitions 2/54 dead transitions. [2022-11-25 15:26:19,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 425 flow [2022-11-25 15:26:19,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:19,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 971 transitions. [2022-11-25 15:26:19,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4896621280887544 [2022-11-25 15:26:19,538 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 971 transitions. [2022-11-25 15:26:19,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 971 transitions. [2022-11-25 15:26:19,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:19,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 971 transitions. [2022-11-25 15:26:19,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 323.6666666666667) internal successors, (971), 3 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,546 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 337 flow. Second operand 3 states and 971 transitions. [2022-11-25 15:26:19,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 425 flow [2022-11-25 15:26:19,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:19,550 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 321 flow [2022-11-25 15:26:19,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=321, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2022-11-25 15:26:19,551 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2022-11-25 15:26:19,551 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 321 flow [2022-11-25 15:26:19,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,552 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:19,552 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:19,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:26:19,552 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:19,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1683600077, now seen corresponding path program 1 times [2022-11-25 15:26:19,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:19,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797888361] [2022-11-25 15:26:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:19,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:19,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797888361] [2022-11-25 15:26:19,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797888361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:19,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:19,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:19,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709596007] [2022-11-25 15:26:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:26:19,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:26:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:26:19,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 661 [2022-11-25 15:26:19,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:19,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:19,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 661 [2022-11-25 15:26:19,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:20,036 INFO L130 PetriNetUnfolder]: 364/716 cut-off events. [2022-11-25 15:26:20,037 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2022-11-25 15:26:20,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 716 events. 364/716 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3297 event pairs, 116 based on Foata normal form. 1/621 useless extension candidates. Maximal degree in co-relation 2030. Up to 470 conditions per place. [2022-11-25 15:26:20,041 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 51 selfloop transitions, 4 changer transitions 16/79 dead transitions. [2022-11-25 15:26:20,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 570 flow [2022-11-25 15:26:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:26:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:26:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1306 transitions. [2022-11-25 15:26:20,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4939485627836611 [2022-11-25 15:26:20,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1306 transitions. [2022-11-25 15:26:20,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1306 transitions. [2022-11-25 15:26:20,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:20,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1306 transitions. [2022-11-25 15:26:20,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 326.5) internal successors, (1306), 4 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,056 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,056 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 321 flow. Second operand 4 states and 1306 transitions. [2022-11-25 15:26:20,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 570 flow [2022-11-25 15:26:20,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:26:20,061 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 302 flow [2022-11-25 15:26:20,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2022-11-25 15:26:20,062 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2022-11-25 15:26:20,062 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 302 flow [2022-11-25 15:26:20,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 313.75) internal successors, (1255), 4 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,063 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:20,063 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:20,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:26:20,064 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:20,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1526195202, now seen corresponding path program 1 times [2022-11-25 15:26:20,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:20,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569500474] [2022-11-25 15:26:20,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:20,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:20,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:20,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569500474] [2022-11-25 15:26:20,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569500474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:20,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:20,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491218809] [2022-11-25 15:26:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:20,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:20,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 661 [2022-11-25 15:26:20,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:20,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 661 [2022-11-25 15:26:20,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:20,441 INFO L130 PetriNetUnfolder]: 346/697 cut-off events. [2022-11-25 15:26:20,442 INFO L131 PetriNetUnfolder]: For 690/691 co-relation queries the response was YES. [2022-11-25 15:26:20,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 697 events. 346/697 cut-off events. For 690/691 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3437 event pairs, 112 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 2058. Up to 387 conditions per place. [2022-11-25 15:26:20,446 INFO L137 encePairwiseOnDemand]: 657/661 looper letters, 34 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2022-11-25 15:26:20,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 404 flow [2022-11-25 15:26:20,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:20,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 990 transitions. [2022-11-25 15:26:20,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49924357034795763 [2022-11-25 15:26:20,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 990 transitions. [2022-11-25 15:26:20,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 990 transitions. [2022-11-25 15:26:20,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:20,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 990 transitions. [2022-11-25 15:26:20,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 330.0) internal successors, (990), 3 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,458 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 302 flow. Second operand 3 states and 990 transitions. [2022-11-25 15:26:20,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 404 flow [2022-11-25 15:26:20,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 381 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-11-25 15:26:20,464 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 297 flow [2022-11-25 15:26:20,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2022-11-25 15:26:20,464 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2022-11-25 15:26:20,465 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 297 flow [2022-11-25 15:26:20,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.6666666666667) internal successors, (968), 3 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:20,466 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:20,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 15:26:20,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:20,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:20,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1526195201, now seen corresponding path program 1 times [2022-11-25 15:26:20,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:20,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941338113] [2022-11-25 15:26:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:20,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941338113] [2022-11-25 15:26:20,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941338113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:20,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:20,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:26:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877487367] [2022-11-25 15:26:20,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:26:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:20,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:26:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:26:20,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 661 [2022-11-25 15:26:20,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:20,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 661 [2022-11-25 15:26:20,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:20,778 INFO L130 PetriNetUnfolder]: 346/690 cut-off events. [2022-11-25 15:26:20,778 INFO L131 PetriNetUnfolder]: For 782/783 co-relation queries the response was YES. [2022-11-25 15:26:20,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 690 events. 346/690 cut-off events. For 782/783 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3381 event pairs, 112 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 2067. Up to 387 conditions per place. [2022-11-25 15:26:20,782 INFO L137 encePairwiseOnDemand]: 657/661 looper letters, 34 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2022-11-25 15:26:20,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 399 flow [2022-11-25 15:26:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:26:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:26:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 978 transitions. [2022-11-25 15:26:20,786 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49319213313161875 [2022-11-25 15:26:20,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 978 transitions. [2022-11-25 15:26:20,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 978 transitions. [2022-11-25 15:26:20,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:20,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 978 transitions. [2022-11-25 15:26:20,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 661.0) internal successors, (2644), 4 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,793 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 297 flow. Second operand 3 states and 978 transitions. [2022-11-25 15:26:20,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 399 flow [2022-11-25 15:26:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 51 transitions, 379 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:20,797 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 295 flow [2022-11-25 15:26:20,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2022-11-25 15:26:20,798 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2022-11-25 15:26:20,798 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 295 flow [2022-11-25 15:26:20,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:20,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:20,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 15:26:20,799 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2089933521, now seen corresponding path program 1 times [2022-11-25 15:26:20,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:20,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902977706] [2022-11-25 15:26:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:20,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:20,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902977706] [2022-11-25 15:26:20,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902977706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:20,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:20,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:26:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615736725] [2022-11-25 15:26:20,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:20,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:26:20,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:26:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:26:21,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 661 [2022-11-25 15:26:21,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 295 flow. Second operand has 5 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:21,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:21,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 661 [2022-11-25 15:26:21,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:21,338 INFO L130 PetriNetUnfolder]: 370/685 cut-off events. [2022-11-25 15:26:21,338 INFO L131 PetriNetUnfolder]: For 797/797 co-relation queries the response was YES. [2022-11-25 15:26:21,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 685 events. 370/685 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3114 event pairs, 115 based on Foata normal form. 30/614 useless extension candidates. Maximal degree in co-relation 1984. Up to 373 conditions per place. [2022-11-25 15:26:21,343 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 30 selfloop transitions, 13 changer transitions 0/49 dead transitions. [2022-11-25 15:26:21,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 379 flow [2022-11-25 15:26:21,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:26:21,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:26:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1261 transitions. [2022-11-25 15:26:21,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.476928895612708 [2022-11-25 15:26:21,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1261 transitions. [2022-11-25 15:26:21,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1261 transitions. [2022-11-25 15:26:21,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:21,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1261 transitions. [2022-11-25 15:26:21,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 315.25) internal successors, (1261), 4 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:21,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:21,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:21,357 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 295 flow. Second operand 4 states and 1261 transitions. [2022-11-25 15:26:21,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 379 flow [2022-11-25 15:26:21,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 357 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 15:26:21,362 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 281 flow [2022-11-25 15:26:21,363 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2022-11-25 15:26:21,363 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2022-11-25 15:26:21,363 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 281 flow [2022-11-25 15:26:21,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:21,364 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:21,364 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:21,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 15:26:21,365 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:21,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:21,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1422174675, now seen corresponding path program 1 times [2022-11-25 15:26:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:21,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698307100] [2022-11-25 15:26:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:21,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:21,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698307100] [2022-11-25 15:26:21,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698307100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:21,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:21,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:26:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337467851] [2022-11-25 15:26:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:26:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:26:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:26:21,881 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 661 [2022-11-25 15:26:21,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 281 flow. Second operand has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:21,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:21,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 661 [2022-11-25 15:26:21,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:22,059 INFO L130 PetriNetUnfolder]: 461/804 cut-off events. [2022-11-25 15:26:22,059 INFO L131 PetriNetUnfolder]: For 997/997 co-relation queries the response was YES. [2022-11-25 15:26:22,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 804 events. 461/804 cut-off events. For 997/997 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3490 event pairs, 184 based on Foata normal form. 57/746 useless extension candidates. Maximal degree in co-relation 2395. Up to 548 conditions per place. [2022-11-25 15:26:22,063 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 30 selfloop transitions, 13 changer transitions 3/50 dead transitions. [2022-11-25 15:26:22,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 395 flow [2022-11-25 15:26:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:26:22,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:26:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1278 transitions. [2022-11-25 15:26:22,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4833585476550681 [2022-11-25 15:26:22,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1278 transitions. [2022-11-25 15:26:22,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1278 transitions. [2022-11-25 15:26:22,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:22,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1278 transitions. [2022-11-25 15:26:22,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,077 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 281 flow. Second operand 4 states and 1278 transitions. [2022-11-25 15:26:22,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 395 flow [2022-11-25 15:26:22,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 366 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 15:26:22,082 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 264 flow [2022-11-25 15:26:22,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2022-11-25 15:26:22,082 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2022-11-25 15:26:22,083 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 264 flow [2022-11-25 15:26:22,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:22,084 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:22,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 15:26:22,084 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:22,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1669232170, now seen corresponding path program 1 times [2022-11-25 15:26:22,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:22,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66050471] [2022-11-25 15:26:22,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:22,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:22,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66050471] [2022-11-25 15:26:22,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66050471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:22,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:22,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:26:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382426150] [2022-11-25 15:26:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:26:22,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:22,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:26:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:26:22,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 661 [2022-11-25 15:26:22,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:22,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 661 [2022-11-25 15:26:22,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:22,685 INFO L130 PetriNetUnfolder]: 271/582 cut-off events. [2022-11-25 15:26:22,685 INFO L131 PetriNetUnfolder]: For 673/673 co-relation queries the response was YES. [2022-11-25 15:26:22,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 582 events. 271/582 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2789 event pairs, 73 based on Foata normal form. 4/484 useless extension candidates. Maximal degree in co-relation 1676. Up to 286 conditions per place. [2022-11-25 15:26:22,689 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 52 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2022-11-25 15:26:22,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 578 flow [2022-11-25 15:26:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:26:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:26:22,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1296 transitions. [2022-11-25 15:26:22,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49016641452344933 [2022-11-25 15:26:22,693 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1296 transitions. [2022-11-25 15:26:22,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1296 transitions. [2022-11-25 15:26:22,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:22,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1296 transitions. [2022-11-25 15:26:22,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 324.0) internal successors, (1296), 4 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,701 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 661.0) internal successors, (3305), 5 states have internal predecessors, (3305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,702 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 264 flow. Second operand 4 states and 1296 transitions. [2022-11-25 15:26:22,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 578 flow [2022-11-25 15:26:22,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 72 transitions, 532 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-25 15:26:22,706 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 386 flow [2022-11-25 15:26:22,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2022-11-25 15:26:22,707 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2022-11-25 15:26:22,707 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 386 flow [2022-11-25 15:26:22,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.75) internal successors, (1263), 4 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:22,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:22,708 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:22,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 15:26:22,709 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:22,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:22,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1322323220, now seen corresponding path program 2 times [2022-11-25 15:26:22,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:22,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434141280] [2022-11-25 15:26:22,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:22,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:22,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:22,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434141280] [2022-11-25 15:26:22,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434141280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:26:22,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:26:22,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:26:22,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467856750] [2022-11-25 15:26:22,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:26:22,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:26:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:26:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:26:23,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 661 [2022-11-25 15:26:23,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 386 flow. Second operand has 5 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:23,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:23,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 661 [2022-11-25 15:26:23,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:23,278 INFO L130 PetriNetUnfolder]: 271/578 cut-off events. [2022-11-25 15:26:23,278 INFO L131 PetriNetUnfolder]: For 942/942 co-relation queries the response was YES. [2022-11-25 15:26:23,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 578 events. 271/578 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2731 event pairs, 51 based on Foata normal form. 4/482 useless extension candidates. Maximal degree in co-relation 1715. Up to 220 conditions per place. [2022-11-25 15:26:23,284 INFO L137 encePairwiseOnDemand]: 656/661 looper letters, 43 selfloop transitions, 25 changer transitions 0/73 dead transitions. [2022-11-25 15:26:23,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 620 flow [2022-11-25 15:26:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:26:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:26:23,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1599 transitions. [2022-11-25 15:26:23,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4838124054462935 [2022-11-25 15:26:23,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1599 transitions. [2022-11-25 15:26:23,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1599 transitions. [2022-11-25 15:26:23,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:23,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1599 transitions. [2022-11-25 15:26:23,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 319.8) internal successors, (1599), 5 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:23,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:23,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:23,303 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 386 flow. Second operand 5 states and 1599 transitions. [2022-11-25 15:26:23,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 620 flow [2022-11-25 15:26:23,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 589 flow, removed 11 selfloop flow, removed 1 redundant places. [2022-11-25 15:26:23,311 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 432 flow [2022-11-25 15:26:23,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2022-11-25 15:26:23,312 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2022-11-25 15:26:23,312 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 432 flow [2022-11-25 15:26:23,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:23,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:23,313 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:23,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 15:26:23,313 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:23,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 425586401, now seen corresponding path program 1 times [2022-11-25 15:26:23,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:23,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330340442] [2022-11-25 15:26:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:23,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:23,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:23,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330340442] [2022-11-25 15:26:23,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330340442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:26:23,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524229514] [2022-11-25 15:26:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:23,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:26:23,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:26:23,814 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:26:23,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:26:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:24,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 15:26:24,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:26:24,137 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 15:26:24,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 32 [2022-11-25 15:26:24,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2022-11-25 15:26:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:24,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:26:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:26:25,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524229514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:26:25,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:26:25,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 15:26:25,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142169019] [2022-11-25 15:26:25,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:26:25,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:26:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:25,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:26:25,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:26:26,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 661 [2022-11-25 15:26:26,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 432 flow. Second operand has 12 states, 12 states have (on average 309.75) internal successors, (3717), 12 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:26,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:26,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 661 [2022-11-25 15:26:26,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:27,454 INFO L130 PetriNetUnfolder]: 306/653 cut-off events. [2022-11-25 15:26:27,454 INFO L131 PetriNetUnfolder]: For 1112/1113 co-relation queries the response was YES. [2022-11-25 15:26:27,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 653 events. 306/653 cut-off events. For 1112/1113 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2818 event pairs, 79 based on Foata normal form. 2/539 useless extension candidates. Maximal degree in co-relation 2007. Up to 393 conditions per place. [2022-11-25 15:26:27,458 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 49 selfloop transitions, 2 changer transitions 34/89 dead transitions. [2022-11-25 15:26:27,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 778 flow [2022-11-25 15:26:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:26:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 15:26:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2201 transitions. [2022-11-25 15:26:27,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4756861897557813 [2022-11-25 15:26:27,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2201 transitions. [2022-11-25 15:26:27,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2201 transitions. [2022-11-25 15:26:27,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:27,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2201 transitions. [2022-11-25 15:26:27,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.42857142857144) internal successors, (2201), 7 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:27,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 661.0) internal successors, (5288), 8 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:27,478 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 661.0) internal successors, (5288), 8 states have internal predecessors, (5288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:27,479 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 432 flow. Second operand 7 states and 2201 transitions. [2022-11-25 15:26:27,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 778 flow [2022-11-25 15:26:27,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 756 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-11-25 15:26:27,485 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 384 flow [2022-11-25 15:26:27,485 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2022-11-25 15:26:27,486 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2022-11-25 15:26:27,486 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 384 flow [2022-11-25 15:26:27,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 309.75) internal successors, (3717), 12 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:27,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:26:27,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:27,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:26:27,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 15:26:27,695 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-25 15:26:27,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:26:27,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1999683105, now seen corresponding path program 2 times [2022-11-25 15:26:27,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:26:27,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254498333] [2022-11-25 15:26:27,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:26:27,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:26:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:26:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:28,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:26:28,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254498333] [2022-11-25 15:26:28,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254498333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:26:28,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165482646] [2022-11-25 15:26:28,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:26:28,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:26:28,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:26:28,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:26:28,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:26:28,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:26:28,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:26:28,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:26:28,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:26:28,365 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 15:26:28,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 32 [2022-11-25 15:26:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:28,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:26:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:26:28,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165482646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:26:28,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:26:28,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 15:26:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780911301] [2022-11-25 15:26:28,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:26:28,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 15:26:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:26:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:26:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:26:31,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 661 [2022-11-25 15:26:31,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 310.0769230769231) internal successors, (4031), 13 states have internal predecessors, (4031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:31,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:26:31,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 661 [2022-11-25 15:26:31,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:26:31,723 INFO L130 PetriNetUnfolder]: 238/506 cut-off events. [2022-11-25 15:26:31,723 INFO L131 PetriNetUnfolder]: For 763/763 co-relation queries the response was YES. [2022-11-25 15:26:31,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 506 events. 238/506 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1975 event pairs, 34 based on Foata normal form. 4/422 useless extension candidates. Maximal degree in co-relation 1524. Up to 115 conditions per place. [2022-11-25 15:26:31,726 INFO L137 encePairwiseOnDemand]: 655/661 looper letters, 0 selfloop transitions, 0 changer transitions 92/92 dead transitions. [2022-11-25 15:26:31,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 700 flow [2022-11-25 15:26:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 15:26:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-25 15:26:31,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3139 transitions. [2022-11-25 15:26:31,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4748865355521936 [2022-11-25 15:26:31,740 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3139 transitions. [2022-11-25 15:26:31,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3139 transitions. [2022-11-25 15:26:31,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:26:31,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3139 transitions. [2022-11-25 15:26:31,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 313.9) internal successors, (3139), 10 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:31,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 661.0) internal successors, (7271), 11 states have internal predecessors, (7271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:31,760 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 661.0) internal successors, (7271), 11 states have internal predecessors, (7271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:31,761 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 384 flow. Second operand 10 states and 3139 transitions. [2022-11-25 15:26:31,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 700 flow [2022-11-25 15:26:31,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 92 transitions, 680 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-25 15:26:31,765 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2022-11-25 15:26:31,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=661, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2022-11-25 15:26:31,766 INFO L288 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2022-11-25 15:26:31,766 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2022-11-25 15:26:31,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 310.0769230769231) internal successors, (4031), 13 states have internal predecessors, (4031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:26:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 31 remaining) [2022-11-25 15:26:31,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 31 remaining) [2022-11-25 15:26:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-11-25 15:26:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-11-25 15:26:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (26 of 31 remaining) [2022-11-25 15:26:31,771 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (25 of 31 remaining) [2022-11-25 15:26:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-11-25 15:26:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-11-25 15:26:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-11-25 15:26:31,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-11-25 15:26:31,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (20 of 31 remaining) [2022-11-25 15:26:31,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 31 remaining) [2022-11-25 15:26:31,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (18 of 31 remaining) [2022-11-25 15:26:31,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-11-25 15:26:31,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-11-25 15:26:31,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-11-25 15:26:31,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-11-25 15:26:31,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-11-25 15:26:31,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-11-25 15:26:31,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (11 of 31 remaining) [2022-11-25 15:26:31,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 31 remaining) [2022-11-25 15:26:31,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONMEMORY_LEAK (9 of 31 remaining) [2022-11-25 15:26:31,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONMEMORY_LEAK (8 of 31 remaining) [2022-11-25 15:26:31,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-11-25 15:26:31,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-11-25 15:26:31,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-11-25 15:26:31,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-11-25 15:26:31,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-11-25 15:26:31,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-11-25 15:26:31,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 31 remaining) [2022-11-25 15:26:31,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 31 remaining) [2022-11-25 15:26:31,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:26:31,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 15:26:31,990 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:26:31,996 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:26:31,996 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:26:31,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:26:31 BasicIcfg [2022-11-25 15:26:31,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:26:32,000 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:26:32,000 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:26:32,000 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:26:32,001 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:25:58" (3/4) ... [2022-11-25 15:26:32,003 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:26:32,009 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_ath9k [2022-11-25 15:26:32,010 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread_usb [2022-11-25 15:26:32,014 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-25 15:26:32,015 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-25 15:26:32,015 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-25 15:26:32,015 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:26:32,060 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:26:32,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:26:32,061 INFO L158 Benchmark]: Toolchain (without parser) took 36231.40ms. Allocated memory was 190.8MB in the beginning and 666.9MB in the end (delta: 476.1MB). Free memory was 141.2MB in the beginning and 247.5MB in the end (delta: -106.3MB). Peak memory consumption was 371.5MB. Max. memory is 16.1GB. [2022-11-25 15:26:32,061 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:26:32,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1258.84ms. Allocated memory is still 190.8MB. Free memory was 141.2MB in the beginning and 83.8MB in the end (delta: 57.4MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2022-11-25 15:26:32,062 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.71ms. Allocated memory is still 190.8MB. Free memory was 83.8MB in the beginning and 80.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 15:26:32,062 INFO L158 Benchmark]: Boogie Preprocessor took 47.22ms. Allocated memory is still 190.8MB. Free memory was 80.3MB in the beginning and 77.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:26:32,063 INFO L158 Benchmark]: RCFGBuilder took 871.70ms. Allocated memory is still 190.8MB. Free memory was 77.5MB in the beginning and 137.8MB in the end (delta: -60.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2022-11-25 15:26:32,063 INFO L158 Benchmark]: TraceAbstraction took 33909.76ms. Allocated memory was 190.8MB in the beginning and 666.9MB in the end (delta: 476.1MB). Free memory was 137.8MB in the beginning and 250.6MB in the end (delta: -112.8MB). Peak memory consumption was 361.1MB. Max. memory is 16.1GB. [2022-11-25 15:26:32,063 INFO L158 Benchmark]: Witness Printer took 60.96ms. Allocated memory is still 666.9MB. Free memory was 250.6MB in the beginning and 247.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 15:26:32,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1258.84ms. Allocated memory is still 190.8MB. Free memory was 141.2MB in the beginning and 83.8MB in the end (delta: 57.4MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.71ms. Allocated memory is still 190.8MB. Free memory was 83.8MB in the beginning and 80.3MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.22ms. Allocated memory is still 190.8MB. Free memory was 80.3MB in the beginning and 77.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 871.70ms. Allocated memory is still 190.8MB. Free memory was 77.5MB in the beginning and 137.8MB in the end (delta: -60.3MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 33909.76ms. Allocated memory was 190.8MB in the beginning and 666.9MB in the end (delta: 476.1MB). Free memory was 137.8MB in the beginning and 250.6MB in the end (delta: -112.8MB). Peak memory consumption was 361.1MB. Max. memory is 16.1GB. * Witness Printer took 60.96ms. Allocated memory is still 666.9MB. Free memory was 250.6MB in the beginning and 247.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.1s, 231 PlacesBefore, 51 PlacesAfterwards, 248 TransitionsBefore, 55 TransitionsAfterwards, 12794 CoEnabledTransitionPairs, 7 FixpointIterations, 80 TrivialSequentialCompositions, 166 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 44 ConcurrentYvCompositions, 13 ChoiceCompositions, 308 TotalNumberOfCompositions, 18116 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 13403, independent: 13211, independent conditional: 0, independent unconditional: 13211, dependent: 192, dependent conditional: 0, dependent unconditional: 192, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9273, independent: 9196, independent conditional: 0, independent unconditional: 9196, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 9273, independent: 9155, independent conditional: 0, independent unconditional: 9155, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 118, independent: 41, independent conditional: 0, independent unconditional: 41, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 394, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 304, dependent conditional: 0, dependent unconditional: 304, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13403, independent: 4015, independent conditional: 0, independent unconditional: 4015, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 9273, unknown conditional: 0, unknown unconditional: 9273] , Statistics on independence cache: Total cache size (in pairs): 299, Positive cache size: 276, Positive conditional cache size: 0, Positive unconditional cache size: 276, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1795]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 350 locations, 31 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: 33.7s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3014 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1851 mSDsluCounter, 330 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152 mSDsCounter, 243 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6273 IncrementalHoareTripleChecker+Invalid, 6516 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 243 mSolverCounterUnsat, 178 mSDtfsCounter, 6273 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=528occurred in iteration=10, InterpolantAutomatonStates: 95, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 311 NumberOfCodeBlocks, 311 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 328 ConstructedInterpolants, 37 QuantifiedInterpolants, 3462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 610 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 29 InterpolantComputations, 23 PerfectInterpolantSequences, 20/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 15:26:32,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_712c0e2f-4c19-4cdd-85d7-ef764fc85a18/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE