./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- 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-6b4ec56 [2022-11-20 11:32:22,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:32:22,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:32:22,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:32:22,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:32:22,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:32:22,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:32:22,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:32:22,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:32:22,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:32:22,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:32:22,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:32:22,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:32:22,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:32:22,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:32:22,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:32:22,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:32:22,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:32:22,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:32:22,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:32:22,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:32:22,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:32:22,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:32:22,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:32:23,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:32:23,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:32:23,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:32:23,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:32:23,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:32:23,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:32:23,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:32:23,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:32:23,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:32:23,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:32:23,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:32:23,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:32:23,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:32:23,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:32:23,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:32:23,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:32:23,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:32:23,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:32:23,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:32:23,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:32:23,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:32:23,071 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:32:23,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:32:23,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:32:23,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:32:23,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:32:23,073 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:32:23,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:32:23,075 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:32:23,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:32:23,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:32:23,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:32:23,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:32:23,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:32:23,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:32:23,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:32:23,077 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:32:23,077 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:32:23,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:32:23,077 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:32:23,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:32:23,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:32:23,078 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:32:23,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:32:23,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:32:23,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:32:23,079 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:32:23,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:32:23,080 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:32:23,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:32:23,080 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:32:23,081 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:32:23,081 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:32:23,081 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2022-11-20 11:32:23,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:32:23,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:32:23,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:32:23,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:32:23,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:32:23,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue.i [2022-11-20 11:32:26,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:32:27,043 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:32:27,044 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/sv-benchmarks/c/pthread/queue.i [2022-11-20 11:32:27,060 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/data/0d53d5c4b/1bb134b58a544584b83055e0c6997fb5/FLAG9e56685c5 [2022-11-20 11:32:27,078 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/data/0d53d5c4b/1bb134b58a544584b83055e0c6997fb5 [2022-11-20 11:32:27,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:32:27,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:32:27,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:32:27,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:32:27,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:32:27,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:27,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7067ddc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27, skipping insertion in model container [2022-11-20 11:32:27,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:27,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:32:27,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:32:27,770 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-20 11:32:27,775 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-20 11:32:27,783 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-20 11:32:27,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:32:27,811 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:32:27,885 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-20 11:32:27,892 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-20 11:32:27,895 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_f2948fdc-4ce3-47a7-b185-8062917d4d89/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-20 11:32:27,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:32:27,956 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:32:27,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27 WrapperNode [2022-11-20 11:32:27,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:32:27,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:32:27,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:32:27,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:32:27,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:27,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,020 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 268 [2022-11-20 11:32:28,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:32:28,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:32:28,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:32:28,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:32:28,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:32:28,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:32:28,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:32:28,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:32:28,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (1/1) ... [2022-11-20 11:32:28,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:32:28,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:32:28,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:32:28,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:32:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 11:32:28,226 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 11:32:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 11:32:28,226 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 11:32:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:32:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:32:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:32:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:32:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:32:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:32:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:32:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:32:28,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:32:28,230 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:32:28,469 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:32:28,471 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:32:29,003 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:32:29,014 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:32:29,027 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:32:29,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:29 BoogieIcfgContainer [2022-11-20 11:32:29,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:32:29,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:32:29,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:32:29,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:32:29,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:27" (1/3) ... [2022-11-20 11:32:29,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4574cd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:29, skipping insertion in model container [2022-11-20 11:32:29,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:27" (2/3) ... [2022-11-20 11:32:29,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4574cd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:29, skipping insertion in model container [2022-11-20 11:32:29,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:29" (3/3) ... [2022-11-20 11:32:29,054 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-11-20 11:32:29,064 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:32:29,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:32:29,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 11:32:29,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:32:29,225 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:32:29,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 313 transitions, 642 flow [2022-11-20 11:32:29,519 INFO L130 PetriNetUnfolder]: 15/311 cut-off events. [2022-11-20 11:32:29,519 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:32:29,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 311 events. 15/311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 460 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 226. Up to 2 conditions per place. [2022-11-20 11:32:29,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 313 transitions, 642 flow [2022-11-20 11:32:29,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 297 transitions, 603 flow [2022-11-20 11:32:29,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:32:29,570 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@243e29e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:32:29,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 11:32:29,593 INFO L130 PetriNetUnfolder]: 2/114 cut-off events. [2022-11-20 11:32:29,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:32:29,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:29,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:29,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:32:29,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1915910819, now seen corresponding path program 1 times [2022-11-20 11:32:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:29,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918790043] [2022-11-20 11:32:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:31,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:31,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918790043] [2022-11-20 11:32:31,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918790043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:31,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:31,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:32:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931477595] [2022-11-20 11:32:31,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:31,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:32:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:32:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:32:31,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 313 [2022-11-20 11:32:31,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 297 transitions, 603 flow. Second operand has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:31,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:31,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 313 [2022-11-20 11:32:31,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:33,260 INFO L130 PetriNetUnfolder]: 1003/4833 cut-off events. [2022-11-20 11:32:33,260 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-20 11:32:33,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6365 conditions, 4833 events. 1003/4833 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 42124 event pairs, 789 based on Foata normal form. 202/4364 useless extension candidates. Maximal degree in co-relation 6146. Up to 1435 conditions per place. [2022-11-20 11:32:33,390 INFO L137 encePairwiseOnDemand]: 296/313 looper letters, 60 selfloop transitions, 12 changer transitions 0/287 dead transitions. [2022-11-20 11:32:33,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 287 transitions, 727 flow [2022-11-20 11:32:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:32:33,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:32:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3041 transitions. [2022-11-20 11:32:33,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7473580732366675 [2022-11-20 11:32:33,421 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3041 transitions. [2022-11-20 11:32:33,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3041 transitions. [2022-11-20 11:32:33,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:33,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3041 transitions. [2022-11-20 11:32:33,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.92307692307693) internal successors, (3041), 13 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,458 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 313.0) internal successors, (4382), 14 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,461 INFO L175 Difference]: Start difference. First operand has 290 places, 297 transitions, 603 flow. Second operand 13 states and 3041 transitions. [2022-11-20 11:32:33,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 287 transitions, 727 flow [2022-11-20 11:32:33,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 287 transitions, 722 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:32:33,475 INFO L231 Difference]: Finished difference. Result has 294 places, 287 transitions, 602 flow [2022-11-20 11:32:33,478 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=602, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-11-20 11:32:33,483 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 4 predicate places. [2022-11-20 11:32:33,483 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 602 flow [2022-11-20 11:32:33,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:33,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:33,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:32:33,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:32:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 960072722, now seen corresponding path program 1 times [2022-11-20 11:32:33,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:33,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042339826] [2022-11-20 11:32:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:33,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:33,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042339826] [2022-11-20 11:32:33,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042339826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:33,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:33,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:32:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245485970] [2022-11-20 11:32:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:33,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:32:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:33,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:32:33,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:32:33,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 313 [2022-11-20 11:32:33,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:33,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 313 [2022-11-20 11:32:33,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:33,748 INFO L130 PetriNetUnfolder]: 34/489 cut-off events. [2022-11-20 11:32:33,749 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-11-20 11:32:33,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 489 events. 34/489 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1760 event pairs, 11 based on Foata normal form. 0/421 useless extension candidates. Maximal degree in co-relation 483. Up to 39 conditions per place. [2022-11-20 11:32:33,755 INFO L137 encePairwiseOnDemand]: 306/313 looper letters, 21 selfloop transitions, 4 changer transitions 0/297 dead transitions. [2022-11-20 11:32:33,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 297 transitions, 675 flow [2022-11-20 11:32:33,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:32:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:32:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1468 transitions. [2022-11-20 11:32:33,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9380191693290735 [2022-11-20 11:32:33,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1468 transitions. [2022-11-20 11:32:33,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1468 transitions. [2022-11-20 11:32:33,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:33,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1468 transitions. [2022-11-20 11:32:33,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 293.6) internal successors, (1468), 5 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,770 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,770 INFO L175 Difference]: Start difference. First operand has 294 places, 287 transitions, 602 flow. Second operand 5 states and 1468 transitions. [2022-11-20 11:32:33,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 297 transitions, 675 flow [2022-11-20 11:32:33,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 297 transitions, 652 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 11:32:33,777 INFO L231 Difference]: Finished difference. Result has 290 places, 290 transitions, 611 flow [2022-11-20 11:32:33,778 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=611, PETRI_PLACES=290, PETRI_TRANSITIONS=290} [2022-11-20 11:32:33,779 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 0 predicate places. [2022-11-20 11:32:33,779 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 290 transitions, 611 flow [2022-11-20 11:32:33,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:33,780 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:33,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:33,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:32:33,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:32:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:33,782 INFO L85 PathProgramCache]: Analyzing trace with hash 139313720, now seen corresponding path program 1 times [2022-11-20 11:32:33,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:33,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533833775] [2022-11-20 11:32:33,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:33,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:38,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:38,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533833775] [2022-11-20 11:32:38,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533833775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:38,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:38,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:32:38,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481096098] [2022-11-20 11:32:38,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:32:38,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:38,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:32:38,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:32:38,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 313 [2022-11-20 11:32:38,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 290 transitions, 611 flow. Second operand has 19 states, 19 states have (on average 204.57894736842104) internal successors, (3887), 19 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:38,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:38,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 313 [2022-11-20 11:32:38,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:43,464 INFO L130 PetriNetUnfolder]: 3593/11369 cut-off events. [2022-11-20 11:32:43,465 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-20 11:32:43,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17255 conditions, 11369 events. 3593/11369 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 111967 event pairs, 2967 based on Foata normal form. 0/9994 useless extension candidates. Maximal degree in co-relation 17141. Up to 4855 conditions per place. [2022-11-20 11:32:43,669 INFO L137 encePairwiseOnDemand]: 291/313 looper letters, 133 selfloop transitions, 28 changer transitions 0/353 dead transitions. [2022-11-20 11:32:43,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 353 transitions, 1065 flow [2022-11-20 11:32:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:32:43,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:32:43,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4205 transitions. [2022-11-20 11:32:43,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6717252396166135 [2022-11-20 11:32:43,681 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4205 transitions. [2022-11-20 11:32:43,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4205 transitions. [2022-11-20 11:32:43,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:43,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4205 transitions. [2022-11-20 11:32:43,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 210.25) internal successors, (4205), 20 states have internal predecessors, (4205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:43,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 313.0) internal successors, (6573), 21 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:43,713 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 313.0) internal successors, (6573), 21 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:43,713 INFO L175 Difference]: Start difference. First operand has 290 places, 290 transitions, 611 flow. Second operand 20 states and 4205 transitions. [2022-11-20 11:32:43,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 353 transitions, 1065 flow [2022-11-20 11:32:43,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 353 transitions, 1063 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:32:43,725 INFO L231 Difference]: Finished difference. Result has 317 places, 311 transitions, 770 flow [2022-11-20 11:32:43,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=770, PETRI_PLACES=317, PETRI_TRANSITIONS=311} [2022-11-20 11:32:43,728 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 27 predicate places. [2022-11-20 11:32:43,729 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 311 transitions, 770 flow [2022-11-20 11:32:43,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 204.57894736842104) internal successors, (3887), 19 states have internal predecessors, (3887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:43,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:43,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:43,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:32:43,733 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:32:43,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:43,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1001243848, now seen corresponding path program 1 times [2022-11-20 11:32:43,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:43,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528983561] [2022-11-20 11:32:43,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:43,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:48,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:48,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528983561] [2022-11-20 11:32:48,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528983561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:48,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:48,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:32:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290074304] [2022-11-20 11:32:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:32:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:32:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:32:48,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 313 [2022-11-20 11:32:48,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 311 transitions, 770 flow. Second operand has 22 states, 22 states have (on average 203.27272727272728) internal successors, (4472), 22 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:48,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:48,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 313 [2022-11-20 11:32:48,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:32:54,875 INFO L130 PetriNetUnfolder]: 4352/14468 cut-off events. [2022-11-20 11:32:54,875 INFO L131 PetriNetUnfolder]: For 1154/1157 co-relation queries the response was YES. [2022-11-20 11:32:54,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23205 conditions, 14468 events. 4352/14468 cut-off events. For 1154/1157 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 148123 event pairs, 1128 based on Foata normal form. 102/12976 useless extension candidates. Maximal degree in co-relation 23072. Up to 4850 conditions per place. [2022-11-20 11:32:54,984 INFO L137 encePairwiseOnDemand]: 290/313 looper letters, 185 selfloop transitions, 47 changer transitions 0/424 dead transitions. [2022-11-20 11:32:54,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 424 transitions, 1512 flow [2022-11-20 11:32:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:32:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:32:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4446 transitions. [2022-11-20 11:32:54,999 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6764034687357371 [2022-11-20 11:32:55,002 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4446 transitions. [2022-11-20 11:32:55,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4446 transitions. [2022-11-20 11:32:55,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:32:55,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4446 transitions. [2022-11-20 11:32:55,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 211.71428571428572) internal successors, (4446), 21 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:55,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:55,044 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:55,053 INFO L175 Difference]: Start difference. First operand has 317 places, 311 transitions, 770 flow. Second operand 21 states and 4446 transitions. [2022-11-20 11:32:55,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 424 transitions, 1512 flow [2022-11-20 11:32:55,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 424 transitions, 1499 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-20 11:32:55,097 INFO L231 Difference]: Finished difference. Result has 338 places, 334 transitions, 1007 flow [2022-11-20 11:32:55,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1007, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2022-11-20 11:32:55,100 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 48 predicate places. [2022-11-20 11:32:55,100 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 1007 flow [2022-11-20 11:32:55,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 203.27272727272728) internal successors, (4472), 22 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:55,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:32:55,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:32:55,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:32:55,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:32:55,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:32:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash 276929790, now seen corresponding path program 2 times [2022-11-20 11:32:55,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:32:55,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729895134] [2022-11-20 11:32:55,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:32:55,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:32:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:32:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:32:59,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:32:59,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729895134] [2022-11-20 11:32:59,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729895134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:32:59,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:32:59,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:32:59,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390408724] [2022-11-20 11:32:59,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:32:59,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:32:59,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:32:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:32:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:32:59,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 313 [2022-11-20 11:32:59,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 1007 flow. Second operand has 22 states, 22 states have (on average 203.27272727272728) internal successors, (4472), 22 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:32:59,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:32:59,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 313 [2022-11-20 11:32:59,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:06,731 INFO L130 PetriNetUnfolder]: 4945/16216 cut-off events. [2022-11-20 11:33:06,731 INFO L131 PetriNetUnfolder]: For 4906/4933 co-relation queries the response was YES. [2022-11-20 11:33:06,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28379 conditions, 16216 events. 4945/16216 cut-off events. For 4906/4933 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 169776 event pairs, 1223 based on Foata normal form. 118/14616 useless extension candidates. Maximal degree in co-relation 28235. Up to 4909 conditions per place. [2022-11-20 11:33:06,868 INFO L137 encePairwiseOnDemand]: 290/313 looper letters, 187 selfloop transitions, 63 changer transitions 0/442 dead transitions. [2022-11-20 11:33:06,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 442 transitions, 1817 flow [2022-11-20 11:33:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:33:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:33:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4444 transitions. [2022-11-20 11:33:06,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6760991936710786 [2022-11-20 11:33:06,884 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4444 transitions. [2022-11-20 11:33:06,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4444 transitions. [2022-11-20 11:33:06,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:06,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4444 transitions. [2022-11-20 11:33:06,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 211.61904761904762) internal successors, (4444), 21 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:06,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:06,918 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:06,919 INFO L175 Difference]: Start difference. First operand has 338 places, 334 transitions, 1007 flow. Second operand 21 states and 4444 transitions. [2022-11-20 11:33:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 442 transitions, 1817 flow [2022-11-20 11:33:07,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 442 transitions, 1756 flow, removed 23 selfloop flow, removed 8 redundant places. [2022-11-20 11:33:07,024 INFO L231 Difference]: Finished difference. Result has 358 places, 351 transitions, 1273 flow [2022-11-20 11:33:07,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1273, PETRI_PLACES=358, PETRI_TRANSITIONS=351} [2022-11-20 11:33:07,028 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 68 predicate places. [2022-11-20 11:33:07,029 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 351 transitions, 1273 flow [2022-11-20 11:33:07,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 203.27272727272728) internal successors, (4472), 22 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:07,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:07,031 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:07,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:33:07,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash -822059908, now seen corresponding path program 3 times [2022-11-20 11:33:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:07,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415729917] [2022-11-20 11:33:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:11,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415729917] [2022-11-20 11:33:11,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415729917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:11,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:11,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:33:11,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593333124] [2022-11-20 11:33:11,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:11,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:33:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:33:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:33:11,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 313 [2022-11-20 11:33:11,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 351 transitions, 1273 flow. Second operand has 21 states, 21 states have (on average 203.38095238095238) internal successors, (4271), 21 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:11,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:11,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 313 [2022-11-20 11:33:11,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:16,891 INFO L130 PetriNetUnfolder]: 5469/18224 cut-off events. [2022-11-20 11:33:16,892 INFO L131 PetriNetUnfolder]: For 11503/11550 co-relation queries the response was YES. [2022-11-20 11:33:16,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33953 conditions, 18224 events. 5469/18224 cut-off events. For 11503/11550 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 196479 event pairs, 1363 based on Foata normal form. 146/16465 useless extension candidates. Maximal degree in co-relation 33799. Up to 4931 conditions per place. [2022-11-20 11:33:17,017 INFO L137 encePairwiseOnDemand]: 289/313 looper letters, 187 selfloop transitions, 76 changer transitions 0/455 dead transitions. [2022-11-20 11:33:17,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 455 transitions, 2151 flow [2022-11-20 11:33:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:33:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:33:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4442 transitions. [2022-11-20 11:33:17,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6757949186064202 [2022-11-20 11:33:17,029 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4442 transitions. [2022-11-20 11:33:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4442 transitions. [2022-11-20 11:33:17,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:17,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4442 transitions. [2022-11-20 11:33:17,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 211.52380952380952) internal successors, (4442), 21 states have internal predecessors, (4442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:17,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:17,054 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:17,054 INFO L175 Difference]: Start difference. First operand has 358 places, 351 transitions, 1273 flow. Second operand 21 states and 4442 transitions. [2022-11-20 11:33:17,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 455 transitions, 2151 flow [2022-11-20 11:33:17,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 455 transitions, 2100 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-11-20 11:33:17,160 INFO L231 Difference]: Finished difference. Result has 377 places, 365 transitions, 1604 flow [2022-11-20 11:33:17,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1604, PETRI_PLACES=377, PETRI_TRANSITIONS=365} [2022-11-20 11:33:17,164 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 87 predicate places. [2022-11-20 11:33:17,164 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 365 transitions, 1604 flow [2022-11-20 11:33:17,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 203.38095238095238) internal successors, (4271), 21 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:17,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:17,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:17,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:33:17,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:17,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1440614586, now seen corresponding path program 4 times [2022-11-20 11:33:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:17,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337586631] [2022-11-20 11:33:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:18,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337586631] [2022-11-20 11:33:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337586631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:18,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:18,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 11:33:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989849718] [2022-11-20 11:33:18,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:18,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:33:18,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:33:18,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:33:18,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 313 [2022-11-20 11:33:18,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 365 transitions, 1604 flow. Second operand has 20 states, 20 states have (on average 203.5) internal successors, (4070), 20 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:18,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:18,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 313 [2022-11-20 11:33:18,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:23,720 INFO L130 PetriNetUnfolder]: 6087/21042 cut-off events. [2022-11-20 11:33:23,720 INFO L131 PetriNetUnfolder]: For 27673/28028 co-relation queries the response was YES. [2022-11-20 11:33:23,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41470 conditions, 21042 events. 6087/21042 cut-off events. For 27673/28028 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 237320 event pairs, 1085 based on Foata normal form. 218/19121 useless extension candidates. Maximal degree in co-relation 41306. Up to 4592 conditions per place. [2022-11-20 11:33:23,855 INFO L137 encePairwiseOnDemand]: 288/313 looper letters, 200 selfloop transitions, 100 changer transitions 0/492 dead transitions. [2022-11-20 11:33:23,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 492 transitions, 2808 flow [2022-11-20 11:33:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:33:23,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-20 11:33:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4652 transitions. [2022-11-20 11:33:23,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6755736276503049 [2022-11-20 11:33:23,870 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4652 transitions. [2022-11-20 11:33:23,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4652 transitions. [2022-11-20 11:33:23,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:23,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4652 transitions. [2022-11-20 11:33:23,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 211.45454545454547) internal successors, (4652), 22 states have internal predecessors, (4652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:23,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 313.0) internal successors, (7199), 23 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:23,896 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 313.0) internal successors, (7199), 23 states have internal predecessors, (7199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:23,896 INFO L175 Difference]: Start difference. First operand has 377 places, 365 transitions, 1604 flow. Second operand 22 states and 4652 transitions. [2022-11-20 11:33:23,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 492 transitions, 2808 flow [2022-11-20 11:33:24,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 492 transitions, 2745 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-11-20 11:33:24,082 INFO L231 Difference]: Finished difference. Result has 397 places, 399 transitions, 2284 flow [2022-11-20 11:33:24,083 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1553, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2284, PETRI_PLACES=397, PETRI_TRANSITIONS=399} [2022-11-20 11:33:24,083 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 107 predicate places. [2022-11-20 11:33:24,084 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 399 transitions, 2284 flow [2022-11-20 11:33:24,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 203.5) internal successors, (4070), 20 states have internal predecessors, (4070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:24,086 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:24,086 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:24,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:33:24,087 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:24,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:24,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1677190407, now seen corresponding path program 1 times [2022-11-20 11:33:24,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:24,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176424095] [2022-11-20 11:33:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:24,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:33:24,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:24,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176424095] [2022-11-20 11:33:24,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176424095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:24,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:24,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:24,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104496024] [2022-11-20 11:33:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:24,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:33:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:33:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:33:24,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 313 [2022-11-20 11:33:24,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 399 transitions, 2284 flow. Second operand has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:24,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:24,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 313 [2022-11-20 11:33:24,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:25,188 INFO L130 PetriNetUnfolder]: 289/3946 cut-off events. [2022-11-20 11:33:25,189 INFO L131 PetriNetUnfolder]: For 7460/8314 co-relation queries the response was YES. [2022-11-20 11:33:25,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 3946 events. 289/3946 cut-off events. For 7460/8314 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 40195 event pairs, 32 based on Foata normal form. 94/3623 useless extension candidates. Maximal degree in co-relation 6381. Up to 266 conditions per place. [2022-11-20 11:33:25,233 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 13 selfloop transitions, 8 changer transitions 0/402 dead transitions. [2022-11-20 11:33:25,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 402 transitions, 2333 flow [2022-11-20 11:33:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:33:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:33:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-11-20 11:33:25,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9322683706070287 [2022-11-20 11:33:25,237 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-11-20 11:33:25,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-11-20 11:33:25,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:25,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-11-20 11:33:25,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:25,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:25,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:25,246 INFO L175 Difference]: Start difference. First operand has 397 places, 399 transitions, 2284 flow. Second operand 5 states and 1459 transitions. [2022-11-20 11:33:25,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 402 transitions, 2333 flow [2022-11-20 11:33:25,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 402 transitions, 2127 flow, removed 89 selfloop flow, removed 10 redundant places. [2022-11-20 11:33:25,280 INFO L231 Difference]: Finished difference. Result has 391 places, 399 transitions, 2098 flow [2022-11-20 11:33:25,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2098, PETRI_PLACES=391, PETRI_TRANSITIONS=399} [2022-11-20 11:33:25,281 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 101 predicate places. [2022-11-20 11:33:25,282 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 399 transitions, 2098 flow [2022-11-20 11:33:25,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:25,282 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:25,283 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:25,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:33:25,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:25,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:25,284 INFO L85 PathProgramCache]: Analyzing trace with hash 453295947, now seen corresponding path program 1 times [2022-11-20 11:33:25,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:25,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105132583] [2022-11-20 11:33:25,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:25,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105132583] [2022-11-20 11:33:25,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105132583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:33:25,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330005510] [2022-11-20 11:33:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:25,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:33:25,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:33:25,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:33:25,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:33:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:25,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:33:25,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:33:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:25,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:33:25,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330005510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:25,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:33:25,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:33:25,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094167951] [2022-11-20 11:33:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:25,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:33:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:33:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:33:25,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 313 [2022-11-20 11:33:25,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 399 transitions, 2098 flow. Second operand has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:25,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:25,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 313 [2022-11-20 11:33:25,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:26,723 INFO L130 PetriNetUnfolder]: 287/3906 cut-off events. [2022-11-20 11:33:26,723 INFO L131 PetriNetUnfolder]: For 2294/2567 co-relation queries the response was YES. [2022-11-20 11:33:26,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 3906 events. 287/3906 cut-off events. For 2294/2567 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 39719 event pairs, 3 based on Foata normal form. 94/3586 useless extension candidates. Maximal degree in co-relation 6193. Up to 180 conditions per place. [2022-11-20 11:33:26,768 INFO L137 encePairwiseOnDemand]: 308/313 looper letters, 19 selfloop transitions, 6 changer transitions 0/406 dead transitions. [2022-11-20 11:33:26,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 406 transitions, 2165 flow [2022-11-20 11:33:26,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:33:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:33:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2042 transitions. [2022-11-20 11:33:26,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9319945230488361 [2022-11-20 11:33:26,772 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2042 transitions. [2022-11-20 11:33:26,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2042 transitions. [2022-11-20 11:33:26,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:26,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2042 transitions. [2022-11-20 11:33:26,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 291.7142857142857) internal successors, (2042), 7 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:26,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:26,781 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:26,781 INFO L175 Difference]: Start difference. First operand has 391 places, 399 transitions, 2098 flow. Second operand 7 states and 2042 transitions. [2022-11-20 11:33:26,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 406 transitions, 2165 flow [2022-11-20 11:33:26,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 406 transitions, 2153 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:33:26,807 INFO L231 Difference]: Finished difference. Result has 393 places, 398 transitions, 2094 flow [2022-11-20 11:33:26,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2094, PETRI_PLACES=393, PETRI_TRANSITIONS=398} [2022-11-20 11:33:26,809 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 103 predicate places. [2022-11-20 11:33:26,809 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 398 transitions, 2094 flow [2022-11-20 11:33:26,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:26,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:26,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:26,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:33:27,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:33:27,011 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:27,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:27,011 INFO L85 PathProgramCache]: Analyzing trace with hash -134940954, now seen corresponding path program 1 times [2022-11-20 11:33:27,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:27,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980414782] [2022-11-20 11:33:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:27,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:27,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:27,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980414782] [2022-11-20 11:33:27,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980414782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:27,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:27,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:33:27,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759861400] [2022-11-20 11:33:27,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:27,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:33:27,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:27,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:33:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:33:27,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 313 [2022-11-20 11:33:27,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 398 transitions, 2094 flow. Second operand has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:27,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:27,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 313 [2022-11-20 11:33:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:27,458 INFO L130 PetriNetUnfolder]: 75/1321 cut-off events. [2022-11-20 11:33:27,458 INFO L131 PetriNetUnfolder]: For 659/660 co-relation queries the response was YES. [2022-11-20 11:33:27,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 1321 events. 75/1321 cut-off events. For 659/660 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 6174 event pairs, 5 based on Foata normal form. 0/1172 useless extension candidates. Maximal degree in co-relation 1995. Up to 38 conditions per place. [2022-11-20 11:33:27,465 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 10 selfloop transitions, 3 changer transitions 0/335 dead transitions. [2022-11-20 11:33:27,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 335 transitions, 1444 flow [2022-11-20 11:33:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:33:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:33:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2022-11-20 11:33:27,467 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9542066027689031 [2022-11-20 11:33:27,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2022-11-20 11:33:27,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2022-11-20 11:33:27,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:27,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2022-11-20 11:33:27,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:27,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:27,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 313.0) internal successors, (1252), 4 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:27,472 INFO L175 Difference]: Start difference. First operand has 393 places, 398 transitions, 2094 flow. Second operand 3 states and 896 transitions. [2022-11-20 11:33:27,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 335 transitions, 1444 flow [2022-11-20 11:33:27,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 335 transitions, 1202 flow, removed 6 selfloop flow, removed 32 redundant places. [2022-11-20 11:33:27,485 INFO L231 Difference]: Finished difference. Result has 359 places, 332 transitions, 1180 flow [2022-11-20 11:33:27,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1180, PETRI_PLACES=359, PETRI_TRANSITIONS=332} [2022-11-20 11:33:27,486 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 69 predicate places. [2022-11-20 11:33:27,487 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 332 transitions, 1180 flow [2022-11-20 11:33:27,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.6666666666667) internal successors, (887), 3 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:27,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:27,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:27,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:33:27,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:27,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:27,489 INFO L85 PathProgramCache]: Analyzing trace with hash -504967327, now seen corresponding path program 1 times [2022-11-20 11:33:27,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:27,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450400425] [2022-11-20 11:33:27,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:27,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:30,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:30,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:30,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450400425] [2022-11-20 11:33:30,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450400425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:30,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:30,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:33:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720483980] [2022-11-20 11:33:30,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:30,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:30,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:30,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:30,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 313 [2022-11-20 11:33:30,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 332 transitions, 1180 flow. Second operand has 19 states, 19 states have (on average 204.73684210526315) internal successors, (3890), 19 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:30,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:30,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 313 [2022-11-20 11:33:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:35,339 INFO L130 PetriNetUnfolder]: 1739/7847 cut-off events. [2022-11-20 11:33:35,340 INFO L131 PetriNetUnfolder]: For 909/912 co-relation queries the response was YES. [2022-11-20 11:33:35,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12279 conditions, 7847 events. 1739/7847 cut-off events. For 909/912 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 72765 event pairs, 1428 based on Foata normal form. 2/7055 useless extension candidates. Maximal degree in co-relation 12244. Up to 2713 conditions per place. [2022-11-20 11:33:35,439 INFO L137 encePairwiseOnDemand]: 290/313 looper letters, 120 selfloop transitions, 34 changer transitions 0/357 dead transitions. [2022-11-20 11:33:35,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 357 transitions, 1554 flow [2022-11-20 11:33:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:33:35,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:33:35,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4382 transitions. [2022-11-20 11:33:35,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-11-20 11:33:35,447 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4382 transitions. [2022-11-20 11:33:35,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4382 transitions. [2022-11-20 11:33:35,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:35,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4382 transitions. [2022-11-20 11:33:35,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 208.66666666666666) internal successors, (4382), 21 states have internal predecessors, (4382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:35,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:35,468 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:35,468 INFO L175 Difference]: Start difference. First operand has 359 places, 332 transitions, 1180 flow. Second operand 21 states and 4382 transitions. [2022-11-20 11:33:35,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 357 transitions, 1554 flow [2022-11-20 11:33:35,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 357 transitions, 1549 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-20 11:33:35,487 INFO L231 Difference]: Finished difference. Result has 383 places, 342 transitions, 1313 flow [2022-11-20 11:33:35,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1313, PETRI_PLACES=383, PETRI_TRANSITIONS=342} [2022-11-20 11:33:35,488 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 93 predicate places. [2022-11-20 11:33:35,488 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 342 transitions, 1313 flow [2022-11-20 11:33:35,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 204.73684210526315) internal successors, (3890), 19 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:35,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:35,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:35,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:33:35,490 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:35,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash -2123888543, now seen corresponding path program 1 times [2022-11-20 11:33:35,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:35,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47386173] [2022-11-20 11:33:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:35,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:39,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:39,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47386173] [2022-11-20 11:33:39,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47386173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:39,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:39,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:33:39,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211395823] [2022-11-20 11:33:39,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:39,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:39,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:39,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:39,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:39,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 313 [2022-11-20 11:33:39,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 342 transitions, 1313 flow. Second operand has 19 states, 19 states have (on average 204.73684210526315) internal successors, (3890), 19 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:39,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:39,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 313 [2022-11-20 11:33:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:42,855 INFO L130 PetriNetUnfolder]: 1752/7790 cut-off events. [2022-11-20 11:33:42,855 INFO L131 PetriNetUnfolder]: For 1298/1301 co-relation queries the response was YES. [2022-11-20 11:33:42,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12454 conditions, 7790 events. 1752/7790 cut-off events. For 1298/1301 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 72206 event pairs, 859 based on Foata normal form. 6/7006 useless extension candidates. Maximal degree in co-relation 12414. Up to 2646 conditions per place. [2022-11-20 11:33:42,935 INFO L137 encePairwiseOnDemand]: 291/313 looper letters, 130 selfloop transitions, 45 changer transitions 0/379 dead transitions. [2022-11-20 11:33:42,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 379 transitions, 1789 flow [2022-11-20 11:33:42,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:33:42,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:33:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4191 transitions. [2022-11-20 11:33:42,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6694888178913738 [2022-11-20 11:33:42,943 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4191 transitions. [2022-11-20 11:33:42,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4191 transitions. [2022-11-20 11:33:42,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:42,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4191 transitions. [2022-11-20 11:33:42,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 209.55) internal successors, (4191), 20 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:42,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 313.0) internal successors, (6573), 21 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:42,965 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 313.0) internal successors, (6573), 21 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:42,965 INFO L175 Difference]: Start difference. First operand has 383 places, 342 transitions, 1313 flow. Second operand 20 states and 4191 transitions. [2022-11-20 11:33:42,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 379 transitions, 1789 flow [2022-11-20 11:33:42,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 379 transitions, 1753 flow, removed 3 selfloop flow, removed 12 redundant places. [2022-11-20 11:33:42,984 INFO L231 Difference]: Finished difference. Result has 395 places, 348 transitions, 1439 flow [2022-11-20 11:33:42,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1439, PETRI_PLACES=395, PETRI_TRANSITIONS=348} [2022-11-20 11:33:42,986 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 105 predicate places. [2022-11-20 11:33:42,986 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 348 transitions, 1439 flow [2022-11-20 11:33:42,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 204.73684210526315) internal successors, (3890), 19 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:42,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:42,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:33:42,988 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:42,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1869900455, now seen corresponding path program 2 times [2022-11-20 11:33:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:42,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79691247] [2022-11-20 11:33:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:46,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79691247] [2022-11-20 11:33:46,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79691247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:46,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:46,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:33:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515760558] [2022-11-20 11:33:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:46,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:33:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:33:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:33:46,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 313 [2022-11-20 11:33:46,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 348 transitions, 1439 flow. Second operand has 21 states, 21 states have (on average 203.52380952380952) internal successors, (4274), 21 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:46,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:46,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 313 [2022-11-20 11:33:46,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:33:51,215 INFO L130 PetriNetUnfolder]: 1770/7871 cut-off events. [2022-11-20 11:33:51,216 INFO L131 PetriNetUnfolder]: For 1546/1549 co-relation queries the response was YES. [2022-11-20 11:33:51,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12781 conditions, 7871 events. 1770/7871 cut-off events. For 1546/1549 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 72856 event pairs, 853 based on Foata normal form. 6/7085 useless extension candidates. Maximal degree in co-relation 12736. Up to 2632 conditions per place. [2022-11-20 11:33:51,301 INFO L137 encePairwiseOnDemand]: 290/313 looper letters, 127 selfloop transitions, 54 changer transitions 0/384 dead transitions. [2022-11-20 11:33:51,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 384 transitions, 1939 flow [2022-11-20 11:33:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:33:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:33:51,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4371 transitions. [2022-11-20 11:33:51,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6649931538110452 [2022-11-20 11:33:51,309 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4371 transitions. [2022-11-20 11:33:51,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4371 transitions. [2022-11-20 11:33:51,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:33:51,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4371 transitions. [2022-11-20 11:33:51,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 208.14285714285714) internal successors, (4371), 21 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:51,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:51,330 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:51,330 INFO L175 Difference]: Start difference. First operand has 395 places, 348 transitions, 1439 flow. Second operand 21 states and 4371 transitions. [2022-11-20 11:33:51,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 384 transitions, 1939 flow [2022-11-20 11:33:51,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 384 transitions, 1877 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-11-20 11:33:51,351 INFO L231 Difference]: Finished difference. Result has 406 places, 354 transitions, 1580 flow [2022-11-20 11:33:51,352 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1580, PETRI_PLACES=406, PETRI_TRANSITIONS=354} [2022-11-20 11:33:51,353 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 116 predicate places. [2022-11-20 11:33:51,353 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 354 transitions, 1580 flow [2022-11-20 11:33:51,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 203.52380952380952) internal successors, (4274), 21 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:51,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:33:51,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:33:51,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:33:51,355 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:33:51,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:33:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1142800039, now seen corresponding path program 3 times [2022-11-20 11:33:51,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:33:51,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108263117] [2022-11-20 11:33:51,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:33:51,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:33:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:33:56,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:33:56,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:33:56,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108263117] [2022-11-20 11:33:56,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108263117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:33:56,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:33:56,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 11:33:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851272284] [2022-11-20 11:33:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:33:56,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:33:56,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:33:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:33:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:33:56,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 313 [2022-11-20 11:33:56,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 354 transitions, 1580 flow. Second operand has 19 states, 19 states have (on average 204.73684210526315) internal successors, (3890), 19 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:33:56,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:33:56,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 313 [2022-11-20 11:33:56,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:01,174 INFO L130 PetriNetUnfolder]: 1766/7809 cut-off events. [2022-11-20 11:34:01,175 INFO L131 PetriNetUnfolder]: For 1910/1913 co-relation queries the response was YES. [2022-11-20 11:34:01,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12820 conditions, 7809 events. 1766/7809 cut-off events. For 1910/1913 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 72289 event pairs, 845 based on Foata normal form. 6/7024 useless extension candidates. Maximal degree in co-relation 12770. Up to 2535 conditions per place. [2022-11-20 11:34:01,283 INFO L137 encePairwiseOnDemand]: 291/313 looper letters, 116 selfloop transitions, 56 changer transitions 0/376 dead transitions. [2022-11-20 11:34:01,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 376 transitions, 1990 flow [2022-11-20 11:34:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:34:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 11:34:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4170 transitions. [2022-11-20 11:34:01,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6661341853035144 [2022-11-20 11:34:01,293 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4170 transitions. [2022-11-20 11:34:01,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4170 transitions. [2022-11-20 11:34:01,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:01,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4170 transitions. [2022-11-20 11:34:01,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 208.5) internal successors, (4170), 20 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 313.0) internal successors, (6573), 21 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,315 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 313.0) internal successors, (6573), 21 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,315 INFO L175 Difference]: Start difference. First operand has 406 places, 354 transitions, 1580 flow. Second operand 20 states and 4170 transitions. [2022-11-20 11:34:01,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 376 transitions, 1990 flow [2022-11-20 11:34:01,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 376 transitions, 1909 flow, removed 8 selfloop flow, removed 15 redundant places. [2022-11-20 11:34:01,345 INFO L231 Difference]: Finished difference. Result has 408 places, 352 transitions, 1591 flow [2022-11-20 11:34:01,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1591, PETRI_PLACES=408, PETRI_TRANSITIONS=352} [2022-11-20 11:34:01,347 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 118 predicate places. [2022-11-20 11:34:01,347 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 352 transitions, 1591 flow [2022-11-20 11:34:01,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 204.73684210526315) internal successors, (3890), 19 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:01,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:01,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:34:01,349 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:01,350 INFO L85 PathProgramCache]: Analyzing trace with hash 721914843, now seen corresponding path program 1 times [2022-11-20 11:34:01,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:01,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188157340] [2022-11-20 11:34:01,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:01,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:01,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:01,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188157340] [2022-11-20 11:34:01,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188157340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:01,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:01,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:34:01,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386099257] [2022-11-20 11:34:01,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:01,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:34:01,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:01,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:34:01,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:34:01,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 313 [2022-11-20 11:34:01,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 352 transitions, 1591 flow. Second operand has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:01,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:01,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 313 [2022-11-20 11:34:01,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:02,013 INFO L130 PetriNetUnfolder]: 115/1602 cut-off events. [2022-11-20 11:34:02,013 INFO L131 PetriNetUnfolder]: For 690/690 co-relation queries the response was YES. [2022-11-20 11:34:02,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 1602 events. 115/1602 cut-off events. For 690/690 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7454 event pairs, 31 based on Foata normal form. 0/1444 useless extension candidates. Maximal degree in co-relation 2666. Up to 192 conditions per place. [2022-11-20 11:34:02,035 INFO L137 encePairwiseOnDemand]: 304/313 looper letters, 27 selfloop transitions, 4 changer transitions 0/364 dead transitions. [2022-11-20 11:34:02,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 364 transitions, 1683 flow [2022-11-20 11:34:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:34:02,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:34:02,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1456 transitions. [2022-11-20 11:34:02,038 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9303514376996805 [2022-11-20 11:34:02,038 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1456 transitions. [2022-11-20 11:34:02,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1456 transitions. [2022-11-20 11:34:02,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:02,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1456 transitions. [2022-11-20 11:34:02,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.2) internal successors, (1456), 5 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,044 INFO L175 Difference]: Start difference. First operand has 408 places, 352 transitions, 1591 flow. Second operand 5 states and 1456 transitions. [2022-11-20 11:34:02,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 364 transitions, 1683 flow [2022-11-20 11:34:02,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 364 transitions, 1571 flow, removed 0 selfloop flow, removed 19 redundant places. [2022-11-20 11:34:02,061 INFO L231 Difference]: Finished difference. Result has 396 places, 355 transitions, 1515 flow [2022-11-20 11:34:02,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1515, PETRI_PLACES=396, PETRI_TRANSITIONS=355} [2022-11-20 11:34:02,064 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 106 predicate places. [2022-11-20 11:34:02,064 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 355 transitions, 1515 flow [2022-11-20 11:34:02,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:02,065 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:34:02,066 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:02,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1020287248, now seen corresponding path program 1 times [2022-11-20 11:34:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:02,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595808659] [2022-11-20 11:34:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:34:02,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:02,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595808659] [2022-11-20 11:34:02,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595808659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:02,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:02,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:34:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326707094] [2022-11-20 11:34:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:02,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:34:02,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:34:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:34:02,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 313 [2022-11-20 11:34:02,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 355 transitions, 1515 flow. Second operand has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:02,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 313 [2022-11-20 11:34:02,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:02,606 INFO L130 PetriNetUnfolder]: 112/1606 cut-off events. [2022-11-20 11:34:02,606 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2022-11-20 11:34:02,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2739 conditions, 1606 events. 112/1606 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7546 event pairs, 10 based on Foata normal form. 20/1518 useless extension candidates. Maximal degree in co-relation 2686. Up to 80 conditions per place. [2022-11-20 11:34:02,629 INFO L137 encePairwiseOnDemand]: 306/313 looper letters, 16 selfloop transitions, 8 changer transitions 0/357 dead transitions. [2022-11-20 11:34:02,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 357 transitions, 1569 flow [2022-11-20 11:34:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:34:02,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:34:02,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1443 transitions. [2022-11-20 11:34:02,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9220447284345048 [2022-11-20 11:34:02,632 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1443 transitions. [2022-11-20 11:34:02,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1443 transitions. [2022-11-20 11:34:02,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:02,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1443 transitions. [2022-11-20 11:34:02,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 288.6) internal successors, (1443), 5 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,638 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 313.0) internal successors, (1878), 6 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,639 INFO L175 Difference]: Start difference. First operand has 396 places, 355 transitions, 1515 flow. Second operand 5 states and 1443 transitions. [2022-11-20 11:34:02,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 357 transitions, 1569 flow [2022-11-20 11:34:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 357 transitions, 1567 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:34:02,655 INFO L231 Difference]: Finished difference. Result has 398 places, 354 transitions, 1529 flow [2022-11-20 11:34:02,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1529, PETRI_PLACES=398, PETRI_TRANSITIONS=354} [2022-11-20 11:34:02,656 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 108 predicate places. [2022-11-20 11:34:02,657 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 354 transitions, 1529 flow [2022-11-20 11:34:02,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:02,658 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:02,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:34:02,658 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1564132802, now seen corresponding path program 1 times [2022-11-20 11:34:02,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:02,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153573977] [2022-11-20 11:34:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:02,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:02,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:02,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153573977] [2022-11-20 11:34:02,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153573977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:34:02,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549722795] [2022-11-20 11:34:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:02,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:34:02,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:34:02,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:34:02,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:34:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:02,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:34:02,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:34:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:02,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:34:02,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549722795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:02,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:34:02,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:34:02,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700302800] [2022-11-20 11:34:02,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:02,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:34:02,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:34:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:34:02,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 313 [2022-11-20 11:34:02,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 354 transitions, 1529 flow. Second operand has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:02,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:02,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 313 [2022-11-20 11:34:02,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:03,586 INFO L130 PetriNetUnfolder]: 108/1582 cut-off events. [2022-11-20 11:34:03,587 INFO L131 PetriNetUnfolder]: For 663/663 co-relation queries the response was YES. [2022-11-20 11:34:03,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1582 events. 108/1582 cut-off events. For 663/663 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7377 event pairs, 3 based on Foata normal form. 20/1494 useless extension candidates. Maximal degree in co-relation 2681. Up to 84 conditions per place. [2022-11-20 11:34:03,611 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 23 selfloop transitions, 6 changer transitions 0/362 dead transitions. [2022-11-20 11:34:03,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 362 transitions, 1609 flow [2022-11-20 11:34:03,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:34:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:34:03,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2022-11-20 11:34:03,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9214970333181196 [2022-11-20 11:34:03,617 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2022-11-20 11:34:03,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2022-11-20 11:34:03,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:03,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2022-11-20 11:34:03,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:03,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:03,627 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:03,627 INFO L175 Difference]: Start difference. First operand has 398 places, 354 transitions, 1529 flow. Second operand 7 states and 2019 transitions. [2022-11-20 11:34:03,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 362 transitions, 1609 flow [2022-11-20 11:34:03,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 362 transitions, 1597 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:34:03,649 INFO L231 Difference]: Finished difference. Result has 399 places, 352 transitions, 1521 flow [2022-11-20 11:34:03,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1521, PETRI_PLACES=399, PETRI_TRANSITIONS=352} [2022-11-20 11:34:03,650 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 109 predicate places. [2022-11-20 11:34:03,651 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 352 transitions, 1521 flow [2022-11-20 11:34:03,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:03,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:03,652 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:03,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:34:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2948fdc-4ce3-47a7-b185-8062917d4d89/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:34:03,858 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:03,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2060660868, now seen corresponding path program 1 times [2022-11-20 11:34:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:03,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950066647] [2022-11-20 11:34:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:04,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:04,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950066647] [2022-11-20 11:34:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950066647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:04,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 11:34:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282850318] [2022-11-20 11:34:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:34:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:34:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:34:04,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 313 [2022-11-20 11:34:04,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 352 transitions, 1521 flow. Second operand has 17 states, 17 states have (on average 211.7058823529412) internal successors, (3599), 17 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:04,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:04,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 313 [2022-11-20 11:34:04,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:07,446 INFO L130 PetriNetUnfolder]: 1657/7867 cut-off events. [2022-11-20 11:34:07,446 INFO L131 PetriNetUnfolder]: For 1820/1823 co-relation queries the response was YES. [2022-11-20 11:34:07,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12930 conditions, 7867 events. 1657/7867 cut-off events. For 1820/1823 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 71890 event pairs, 1380 based on Foata normal form. 2/7177 useless extension candidates. Maximal degree in co-relation 12876. Up to 2670 conditions per place. [2022-11-20 11:34:07,593 INFO L137 encePairwiseOnDemand]: 296/313 looper letters, 113 selfloop transitions, 30 changer transitions 0/360 dead transitions. [2022-11-20 11:34:07,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 360 transitions, 1827 flow [2022-11-20 11:34:07,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:34:07,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:34:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3444 transitions. [2022-11-20 11:34:07,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6876996805111821 [2022-11-20 11:34:07,601 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3444 transitions. [2022-11-20 11:34:07,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3444 transitions. [2022-11-20 11:34:07,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:07,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3444 transitions. [2022-11-20 11:34:07,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 215.25) internal successors, (3444), 16 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:07,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 313.0) internal successors, (5321), 17 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:07,615 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 313.0) internal successors, (5321), 17 states have internal predecessors, (5321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:07,615 INFO L175 Difference]: Start difference. First operand has 399 places, 352 transitions, 1521 flow. Second operand 16 states and 3444 transitions. [2022-11-20 11:34:07,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 360 transitions, 1827 flow [2022-11-20 11:34:07,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 360 transitions, 1810 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-20 11:34:07,639 INFO L231 Difference]: Finished difference. Result has 412 places, 355 transitions, 1600 flow [2022-11-20 11:34:07,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1600, PETRI_PLACES=412, PETRI_TRANSITIONS=355} [2022-11-20 11:34:07,640 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 122 predicate places. [2022-11-20 11:34:07,640 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 355 transitions, 1600 flow [2022-11-20 11:34:07,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 211.7058823529412) internal successors, (3599), 17 states have internal predecessors, (3599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:07,641 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:07,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:07,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:34:07,642 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:07,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:07,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1162008188, now seen corresponding path program 1 times [2022-11-20 11:34:07,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:07,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021267068] [2022-11-20 11:34:07,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:07,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:11,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:11,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021267068] [2022-11-20 11:34:11,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021267068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:11,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:11,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:34:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131566036] [2022-11-20 11:34:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:11,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:34:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:34:11,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:34:11,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 313 [2022-11-20 11:34:11,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 355 transitions, 1600 flow. Second operand has 21 states, 21 states have (on average 210.04761904761904) internal successors, (4411), 21 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:11,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:11,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 313 [2022-11-20 11:34:11,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:16,711 INFO L130 PetriNetUnfolder]: 1649/7880 cut-off events. [2022-11-20 11:34:16,711 INFO L131 PetriNetUnfolder]: For 1851/1854 co-relation queries the response was YES. [2022-11-20 11:34:16,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12973 conditions, 7880 events. 1649/7880 cut-off events. For 1851/1854 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 72015 event pairs, 774 based on Foata normal form. 3/7203 useless extension candidates. Maximal degree in co-relation 12917. Up to 2549 conditions per place. [2022-11-20 11:34:16,824 INFO L137 encePairwiseOnDemand]: 292/313 looper letters, 117 selfloop transitions, 45 changer transitions 0/379 dead transitions. [2022-11-20 11:34:16,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 379 transitions, 1992 flow [2022-11-20 11:34:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:34:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:34:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4485 transitions. [2022-11-20 11:34:16,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.682336832496577 [2022-11-20 11:34:16,834 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4485 transitions. [2022-11-20 11:34:16,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4485 transitions. [2022-11-20 11:34:16,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:16,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4485 transitions. [2022-11-20 11:34:16,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 213.57142857142858) internal successors, (4485), 21 states have internal predecessors, (4485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:16,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:16,853 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:16,853 INFO L175 Difference]: Start difference. First operand has 412 places, 355 transitions, 1600 flow. Second operand 21 states and 4485 transitions. [2022-11-20 11:34:16,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 379 transitions, 1992 flow [2022-11-20 11:34:16,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 379 transitions, 1963 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-20 11:34:16,880 INFO L231 Difference]: Finished difference. Result has 423 places, 356 transitions, 1687 flow [2022-11-20 11:34:16,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1687, PETRI_PLACES=423, PETRI_TRANSITIONS=356} [2022-11-20 11:34:16,882 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 133 predicate places. [2022-11-20 11:34:16,882 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 356 transitions, 1687 flow [2022-11-20 11:34:16,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 210.04761904761904) internal successors, (4411), 21 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:16,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:16,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:16,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:34:16,884 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1667129290, now seen corresponding path program 2 times [2022-11-20 11:34:16,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:16,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853471277] [2022-11-20 11:34:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:16,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:22,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:22,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853471277] [2022-11-20 11:34:22,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853471277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:22,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:22,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:34:22,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982009255] [2022-11-20 11:34:22,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:22,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:34:22,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:22,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:34:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:34:22,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 313 [2022-11-20 11:34:22,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 356 transitions, 1687 flow. Second operand has 20 states, 20 states have (on average 210.2) internal successors, (4204), 20 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:22,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:22,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 313 [2022-11-20 11:34:22,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:27,020 INFO L130 PetriNetUnfolder]: 1641/7839 cut-off events. [2022-11-20 11:34:27,021 INFO L131 PetriNetUnfolder]: For 2105/2108 co-relation queries the response was YES. [2022-11-20 11:34:27,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12985 conditions, 7839 events. 1641/7839 cut-off events. For 2105/2108 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 71646 event pairs, 775 based on Foata normal form. 3/7162 useless extension candidates. Maximal degree in co-relation 12927. Up to 2496 conditions per place. [2022-11-20 11:34:27,119 INFO L137 encePairwiseOnDemand]: 291/313 looper letters, 110 selfloop transitions, 52 changer transitions 0/379 dead transitions. [2022-11-20 11:34:27,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 379 transitions, 2083 flow [2022-11-20 11:34:27,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:34:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:34:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4483 transitions. [2022-11-20 11:34:27,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6820325574319185 [2022-11-20 11:34:27,126 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4483 transitions. [2022-11-20 11:34:27,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4483 transitions. [2022-11-20 11:34:27,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:27,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4483 transitions. [2022-11-20 11:34:27,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 213.47619047619048) internal successors, (4483), 21 states have internal predecessors, (4483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:27,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:27,143 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 313.0) internal successors, (6886), 22 states have internal predecessors, (6886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:27,143 INFO L175 Difference]: Start difference. First operand has 423 places, 356 transitions, 1687 flow. Second operand 21 states and 4483 transitions. [2022-11-20 11:34:27,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 379 transitions, 2083 flow [2022-11-20 11:34:27,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 379 transitions, 1998 flow, removed 3 selfloop flow, removed 19 redundant places. [2022-11-20 11:34:27,170 INFO L231 Difference]: Finished difference. Result has 426 places, 357 transitions, 1744 flow [2022-11-20 11:34:27,170 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1744, PETRI_PLACES=426, PETRI_TRANSITIONS=357} [2022-11-20 11:34:27,171 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 136 predicate places. [2022-11-20 11:34:27,171 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 357 transitions, 1744 flow [2022-11-20 11:34:27,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 210.2) internal successors, (4204), 20 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:27,172 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:27,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:27,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:34:27,173 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2144577610, now seen corresponding path program 3 times [2022-11-20 11:34:27,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:27,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495895279] [2022-11-20 11:34:27,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:27,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:31,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:31,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495895279] [2022-11-20 11:34:31,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495895279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:31,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:31,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:34:31,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130164465] [2022-11-20 11:34:31,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:31,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:34:31,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:31,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:34:31,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:34:31,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 313 [2022-11-20 11:34:31,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 357 transitions, 1744 flow. Second operand has 21 states, 21 states have (on average 210.04761904761904) internal successors, (4411), 21 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:31,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:31,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 313 [2022-11-20 11:34:31,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:36,611 INFO L130 PetriNetUnfolder]: 1634/7724 cut-off events. [2022-11-20 11:34:36,611 INFO L131 PetriNetUnfolder]: For 2418/2421 co-relation queries the response was YES. [2022-11-20 11:34:36,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12880 conditions, 7724 events. 1634/7724 cut-off events. For 2418/2421 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 70861 event pairs, 770 based on Foata normal form. 3/7048 useless extension candidates. Maximal degree in co-relation 12822. Up to 2418 conditions per place. [2022-11-20 11:34:36,700 INFO L137 encePairwiseOnDemand]: 293/313 looper letters, 107 selfloop transitions, 46 changer transitions 0/370 dead transitions. [2022-11-20 11:34:36,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 370 transitions, 2086 flow [2022-11-20 11:34:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:34:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 11:34:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4047 transitions. [2022-11-20 11:34:36,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6805111821086262 [2022-11-20 11:34:36,706 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4047 transitions. [2022-11-20 11:34:36,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4047 transitions. [2022-11-20 11:34:36,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:36,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4047 transitions. [2022-11-20 11:34:36,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 213.0) internal successors, (4047), 19 states have internal predecessors, (4047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:36,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 313.0) internal successors, (6260), 20 states have internal predecessors, (6260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:36,728 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 313.0) internal successors, (6260), 20 states have internal predecessors, (6260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:36,728 INFO L175 Difference]: Start difference. First operand has 426 places, 357 transitions, 1744 flow. Second operand 19 states and 4047 transitions. [2022-11-20 11:34:36,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 370 transitions, 2086 flow [2022-11-20 11:34:36,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 370 transitions, 2000 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-11-20 11:34:36,761 INFO L231 Difference]: Finished difference. Result has 423 places, 354 transitions, 1738 flow [2022-11-20 11:34:36,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1738, PETRI_PLACES=423, PETRI_TRANSITIONS=354} [2022-11-20 11:34:36,762 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 133 predicate places. [2022-11-20 11:34:36,762 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 354 transitions, 1738 flow [2022-11-20 11:34:36,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 210.04761904761904) internal successors, (4411), 21 states have internal predecessors, (4411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:36,764 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:36,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:36,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:34:36,764 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:36,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1730598637, now seen corresponding path program 1 times [2022-11-20 11:34:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:36,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738202238] [2022-11-20 11:34:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:36,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:39,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738202238] [2022-11-20 11:34:39,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738202238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:39,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:39,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 11:34:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820869190] [2022-11-20 11:34:39,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:34:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:39,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:34:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:34:39,932 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 313 [2022-11-20 11:34:39,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 354 transitions, 1738 flow. Second operand has 32 states, 32 states have (on average 187.40625) internal successors, (5997), 32 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:39,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:39,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 313 [2022-11-20 11:34:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:45,801 INFO L130 PetriNetUnfolder]: 2485/10623 cut-off events. [2022-11-20 11:34:45,801 INFO L131 PetriNetUnfolder]: For 2983/2986 co-relation queries the response was YES. [2022-11-20 11:34:45,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17950 conditions, 10623 events. 2485/10623 cut-off events. For 2983/2986 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 104204 event pairs, 1984 based on Foata normal form. 2/9607 useless extension candidates. Maximal degree in co-relation 17893. Up to 3830 conditions per place. [2022-11-20 11:34:45,936 INFO L137 encePairwiseOnDemand]: 274/313 looper letters, 177 selfloop transitions, 68 changer transitions 0/422 dead transitions. [2022-11-20 11:34:45,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 422 transitions, 2540 flow [2022-11-20 11:34:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 11:34:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-20 11:34:45,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 7236 transitions. [2022-11-20 11:34:45,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6083739700689423 [2022-11-20 11:34:45,949 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 7236 transitions. [2022-11-20 11:34:45,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 7236 transitions. [2022-11-20 11:34:45,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:45,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 7236 transitions. [2022-11-20 11:34:45,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 190.42105263157896) internal successors, (7236), 38 states have internal predecessors, (7236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:45,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 313.0) internal successors, (12207), 39 states have internal predecessors, (12207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:45,976 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 313.0) internal successors, (12207), 39 states have internal predecessors, (12207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:45,976 INFO L175 Difference]: Start difference. First operand has 423 places, 354 transitions, 1738 flow. Second operand 38 states and 7236 transitions. [2022-11-20 11:34:45,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 422 transitions, 2540 flow [2022-11-20 11:34:46,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 422 transitions, 2446 flow, removed 0 selfloop flow, removed 18 redundant places. [2022-11-20 11:34:46,008 INFO L231 Difference]: Finished difference. Result has 457 places, 388 transitions, 2133 flow [2022-11-20 11:34:46,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1646, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2133, PETRI_PLACES=457, PETRI_TRANSITIONS=388} [2022-11-20 11:34:46,009 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 167 predicate places. [2022-11-20 11:34:46,010 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 388 transitions, 2133 flow [2022-11-20 11:34:46,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 187.40625) internal successors, (5997), 32 states have internal predecessors, (5997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:46,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:46,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:46,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:34:46,012 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:46,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:46,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2108951025, now seen corresponding path program 1 times [2022-11-20 11:34:46,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:46,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230833082] [2022-11-20 11:34:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:46,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:34:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:34:49,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:34:49,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230833082] [2022-11-20 11:34:49,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230833082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:34:49,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:34:49,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 11:34:49,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762732117] [2022-11-20 11:34:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:34:49,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:34:49,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:34:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:34:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:34:49,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 313 [2022-11-20 11:34:49,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 388 transitions, 2133 flow. Second operand has 32 states, 32 states have (on average 187.4375) internal successors, (5998), 32 states have internal predecessors, (5998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:49,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:34:49,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 313 [2022-11-20 11:34:49,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:34:55,839 INFO L130 PetriNetUnfolder]: 2484/10711 cut-off events. [2022-11-20 11:34:55,839 INFO L131 PetriNetUnfolder]: For 4221/4224 co-relation queries the response was YES. [2022-11-20 11:34:55,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19006 conditions, 10711 events. 2484/10711 cut-off events. For 4221/4224 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 105075 event pairs, 1996 based on Foata normal form. 10/9817 useless extension candidates. Maximal degree in co-relation 18934. Up to 3843 conditions per place. [2022-11-20 11:34:55,979 INFO L137 encePairwiseOnDemand]: 273/313 looper letters, 186 selfloop transitions, 73 changer transitions 0/436 dead transitions. [2022-11-20 11:34:55,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 436 transitions, 2801 flow [2022-11-20 11:34:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:34:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:34:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 7614 transitions. [2022-11-20 11:34:55,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.60814696485623 [2022-11-20 11:34:55,990 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 7614 transitions. [2022-11-20 11:34:55,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 7614 transitions. [2022-11-20 11:34:55,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:34:55,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 7614 transitions. [2022-11-20 11:34:56,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 190.35) internal successors, (7614), 40 states have internal predecessors, (7614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:56,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 313.0) internal successors, (12833), 41 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:56,017 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 313.0) internal successors, (12833), 41 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:56,017 INFO L175 Difference]: Start difference. First operand has 457 places, 388 transitions, 2133 flow. Second operand 40 states and 7614 transitions. [2022-11-20 11:34:56,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 436 transitions, 2801 flow [2022-11-20 11:34:56,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 436 transitions, 2586 flow, removed 68 selfloop flow, removed 20 redundant places. [2022-11-20 11:34:56,057 INFO L231 Difference]: Finished difference. Result has 479 places, 395 transitions, 2139 flow [2022-11-20 11:34:56,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2139, PETRI_PLACES=479, PETRI_TRANSITIONS=395} [2022-11-20 11:34:56,058 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 189 predicate places. [2022-11-20 11:34:56,059 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 395 transitions, 2139 flow [2022-11-20 11:34:56,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 187.4375) internal successors, (5998), 32 states have internal predecessors, (5998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:34:56,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:34:56,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:34:56,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:34:56,060 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:34:56,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:34:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash 980294655, now seen corresponding path program 1 times [2022-11-20 11:34:56,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:34:56,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034106230] [2022-11-20 11:34:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:34:56,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:34:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:02,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:02,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034106230] [2022-11-20 11:35:02,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034106230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:02,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:02,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2022-11-20 11:35:02,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769658180] [2022-11-20 11:35:02,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:02,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:35:02,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:35:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1100, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:35:02,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 313 [2022-11-20 11:35:02,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 395 transitions, 2139 flow. Second operand has 36 states, 36 states have (on average 186.16666666666666) internal successors, (6702), 36 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:02,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:02,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 313 [2022-11-20 11:35:02,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:13,400 INFO L130 PetriNetUnfolder]: 2581/11189 cut-off events. [2022-11-20 11:35:13,400 INFO L131 PetriNetUnfolder]: For 4356/4359 co-relation queries the response was YES. [2022-11-20 11:35:13,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20182 conditions, 11189 events. 2581/11189 cut-off events. For 4356/4359 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 109400 event pairs, 1197 based on Foata normal form. 6/10280 useless extension candidates. Maximal degree in co-relation 20109. Up to 3541 conditions per place. [2022-11-20 11:35:13,545 INFO L137 encePairwiseOnDemand]: 271/313 looper letters, 193 selfloop transitions, 128 changer transitions 0/498 dead transitions. [2022-11-20 11:35:13,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 498 transitions, 3132 flow [2022-11-20 11:35:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:35:13,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-20 11:35:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 7787 transitions. [2022-11-20 11:35:13,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6067949816878361 [2022-11-20 11:35:13,556 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 7787 transitions. [2022-11-20 11:35:13,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 7787 transitions. [2022-11-20 11:35:13,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:13,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 7787 transitions. [2022-11-20 11:35:13,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 189.9268292682927) internal successors, (7787), 41 states have internal predecessors, (7787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:13,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 313.0) internal successors, (13146), 42 states have internal predecessors, (13146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:13,588 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 313.0) internal successors, (13146), 42 states have internal predecessors, (13146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:13,589 INFO L175 Difference]: Start difference. First operand has 479 places, 395 transitions, 2139 flow. Second operand 41 states and 7787 transitions. [2022-11-20 11:35:13,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 498 transitions, 3132 flow [2022-11-20 11:35:13,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 498 transitions, 3020 flow, removed 10 selfloop flow, removed 32 redundant places. [2022-11-20 11:35:13,629 INFO L231 Difference]: Finished difference. Result has 506 places, 416 transitions, 2591 flow [2022-11-20 11:35:13,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2591, PETRI_PLACES=506, PETRI_TRANSITIONS=416} [2022-11-20 11:35:13,631 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 216 predicate places. [2022-11-20 11:35:13,631 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 416 transitions, 2591 flow [2022-11-20 11:35:13,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 186.16666666666666) internal successors, (6702), 36 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:13,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:13,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:35:13,633 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:35:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1916370339, now seen corresponding path program 2 times [2022-11-20 11:35:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681074095] [2022-11-20 11:35:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:16,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:16,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681074095] [2022-11-20 11:35:16,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681074095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:16,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:16,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-20 11:35:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564143851] [2022-11-20 11:35:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:16,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 11:35:16,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:16,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 11:35:16,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:35:16,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 313 [2022-11-20 11:35:16,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 416 transitions, 2591 flow. Second operand has 33 states, 33 states have (on average 186.36363636363637) internal successors, (6150), 33 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:16,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:16,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 313 [2022-11-20 11:35:16,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:24,105 INFO L130 PetriNetUnfolder]: 2511/8118 cut-off events. [2022-11-20 11:35:24,106 INFO L131 PetriNetUnfolder]: For 5789/5798 co-relation queries the response was YES. [2022-11-20 11:35:24,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18128 conditions, 8118 events. 2511/8118 cut-off events. For 5789/5798 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 67888 event pairs, 1082 based on Foata normal form. 10/7588 useless extension candidates. Maximal degree in co-relation 18036. Up to 3371 conditions per place. [2022-11-20 11:35:24,242 INFO L137 encePairwiseOnDemand]: 271/313 looper letters, 202 selfloop transitions, 144 changer transitions 0/523 dead transitions. [2022-11-20 11:35:24,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 523 transitions, 3639 flow [2022-11-20 11:35:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-20 11:35:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-11-20 11:35:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9085 transitions. [2022-11-20 11:35:24,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.604699148029819 [2022-11-20 11:35:24,253 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9085 transitions. [2022-11-20 11:35:24,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9085 transitions. [2022-11-20 11:35:24,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:24,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9085 transitions. [2022-11-20 11:35:24,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 189.27083333333334) internal successors, (9085), 48 states have internal predecessors, (9085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:24,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 313.0) internal successors, (15337), 49 states have internal predecessors, (15337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:24,284 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 313.0) internal successors, (15337), 49 states have internal predecessors, (15337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:24,284 INFO L175 Difference]: Start difference. First operand has 506 places, 416 transitions, 2591 flow. Second operand 48 states and 9085 transitions. [2022-11-20 11:35:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 523 transitions, 3639 flow [2022-11-20 11:35:24,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 523 transitions, 3490 flow, removed 25 selfloop flow, removed 20 redundant places. [2022-11-20 11:35:24,358 INFO L231 Difference]: Finished difference. Result has 544 places, 429 transitions, 2924 flow [2022-11-20 11:35:24,359 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=2924, PETRI_PLACES=544, PETRI_TRANSITIONS=429} [2022-11-20 11:35:24,359 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 254 predicate places. [2022-11-20 11:35:24,359 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 429 transitions, 2924 flow [2022-11-20 11:35:24,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 186.36363636363637) internal successors, (6150), 33 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:24,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:24,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:24,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:35:24,362 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:35:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1761781143, now seen corresponding path program 3 times [2022-11-20 11:35:24,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:24,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483707210] [2022-11-20 11:35:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:24,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:27,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:27,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483707210] [2022-11-20 11:35:27,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483707210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:27,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:27,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-20 11:35:27,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874891802] [2022-11-20 11:35:27,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:27,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:35:27,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:27,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:35:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:35:27,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 313 [2022-11-20 11:35:27,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 429 transitions, 2924 flow. Second operand has 34 states, 34 states have (on average 186.2941176470588) internal successors, (6334), 34 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:27,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:27,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 313 [2022-11-20 11:35:27,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:34,069 INFO L130 PetriNetUnfolder]: 2558/8258 cut-off events. [2022-11-20 11:35:34,069 INFO L131 PetriNetUnfolder]: For 7755/7764 co-relation queries the response was YES. [2022-11-20 11:35:34,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19297 conditions, 8258 events. 2558/8258 cut-off events. For 7755/7764 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 69260 event pairs, 1085 based on Foata normal form. 10/7729 useless extension candidates. Maximal degree in co-relation 19194. Up to 3379 conditions per place. [2022-11-20 11:35:34,213 INFO L137 encePairwiseOnDemand]: 271/313 looper letters, 192 selfloop transitions, 145 changer transitions 0/514 dead transitions. [2022-11-20 11:35:34,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 514 transitions, 3888 flow [2022-11-20 11:35:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:35:34,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:35:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 7586 transitions. [2022-11-20 11:35:34,224 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6059105431309905 [2022-11-20 11:35:34,225 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 7586 transitions. [2022-11-20 11:35:34,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 7586 transitions. [2022-11-20 11:35:34,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:34,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 7586 transitions. [2022-11-20 11:35:34,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 189.65) internal successors, (7586), 40 states have internal predecessors, (7586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:34,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 313.0) internal successors, (12833), 41 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:34,252 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 313.0) internal successors, (12833), 41 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:34,252 INFO L175 Difference]: Start difference. First operand has 544 places, 429 transitions, 2924 flow. Second operand 40 states and 7586 transitions. [2022-11-20 11:35:34,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 514 transitions, 3888 flow [2022-11-20 11:35:34,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 514 transitions, 3554 flow, removed 30 selfloop flow, removed 39 redundant places. [2022-11-20 11:35:34,345 INFO L231 Difference]: Finished difference. Result has 553 places, 439 transitions, 3067 flow [2022-11-20 11:35:34,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=3067, PETRI_PLACES=553, PETRI_TRANSITIONS=439} [2022-11-20 11:35:34,346 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 263 predicate places. [2022-11-20 11:35:34,346 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 439 transitions, 3067 flow [2022-11-20 11:35:34,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.2941176470588) internal successors, (6334), 34 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:34,347 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:34,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:34,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:35:34,348 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:35:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash -498046329, now seen corresponding path program 4 times [2022-11-20 11:35:34,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:34,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664846484] [2022-11-20 11:35:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:34,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:37,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:37,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664846484] [2022-11-20 11:35:37,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664846484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:37,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:37,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-11-20 11:35:37,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660143900] [2022-11-20 11:35:37,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:37,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:35:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:35:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:35:37,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 313 [2022-11-20 11:35:37,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 439 transitions, 3067 flow. Second operand has 34 states, 34 states have (on average 186.2941176470588) internal successors, (6334), 34 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:37,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:37,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 313 [2022-11-20 11:35:37,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:45,761 INFO L130 PetriNetUnfolder]: 2592/8292 cut-off events. [2022-11-20 11:35:45,761 INFO L131 PetriNetUnfolder]: For 9680/9689 co-relation queries the response was YES. [2022-11-20 11:35:45,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19954 conditions, 8292 events. 2592/8292 cut-off events. For 9680/9689 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 69558 event pairs, 1105 based on Foata normal form. 7/7760 useless extension candidates. Maximal degree in co-relation 19849. Up to 3379 conditions per place. [2022-11-20 11:35:45,837 INFO L137 encePairwiseOnDemand]: 271/313 looper letters, 193 selfloop transitions, 149 changer transitions 0/519 dead transitions. [2022-11-20 11:35:45,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 519 transitions, 4023 flow [2022-11-20 11:35:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:35:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 11:35:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 7397 transitions. [2022-11-20 11:35:45,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6059637912673056 [2022-11-20 11:35:45,845 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 7397 transitions. [2022-11-20 11:35:45,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 7397 transitions. [2022-11-20 11:35:45,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:45,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 7397 transitions. [2022-11-20 11:35:45,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 189.66666666666666) internal successors, (7397), 39 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:45,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 313.0) internal successors, (12520), 40 states have internal predecessors, (12520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:45,868 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 313.0) internal successors, (12520), 40 states have internal predecessors, (12520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:45,868 INFO L175 Difference]: Start difference. First operand has 553 places, 439 transitions, 3067 flow. Second operand 39 states and 7397 transitions. [2022-11-20 11:35:45,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 519 transitions, 4023 flow [2022-11-20 11:35:45,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 519 transitions, 3794 flow, removed 17 selfloop flow, removed 29 redundant places. [2022-11-20 11:35:45,976 INFO L231 Difference]: Finished difference. Result has 570 places, 447 transitions, 3315 flow [2022-11-20 11:35:45,977 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=2852, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3315, PETRI_PLACES=570, PETRI_TRANSITIONS=447} [2022-11-20 11:35:45,978 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 280 predicate places. [2022-11-20 11:35:45,978 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 447 transitions, 3315 flow [2022-11-20 11:35:45,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 186.2941176470588) internal successors, (6334), 34 states have internal predecessors, (6334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:45,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:45,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:45,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 11:35:45,979 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:35:45,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash 782470397, now seen corresponding path program 5 times [2022-11-20 11:35:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:45,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742300570] [2022-11-20 11:35:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:45,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:49,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:49,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742300570] [2022-11-20 11:35:49,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742300570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:49,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:49,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-20 11:35:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376232435] [2022-11-20 11:35:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:49,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 11:35:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 11:35:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:35:49,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 313 [2022-11-20 11:35:49,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 447 transitions, 3315 flow. Second operand has 33 states, 33 states have (on average 186.36363636363637) internal successors, (6150), 33 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:49,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:49,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 313 [2022-11-20 11:35:49,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:35:56,702 INFO L130 PetriNetUnfolder]: 2585/8252 cut-off events. [2022-11-20 11:35:56,703 INFO L131 PetriNetUnfolder]: For 12155/12164 co-relation queries the response was YES. [2022-11-20 11:35:56,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20417 conditions, 8252 events. 2585/8252 cut-off events. For 12155/12164 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 68928 event pairs, 1081 based on Foata normal form. 7/7723 useless extension candidates. Maximal degree in co-relation 20306. Up to 3291 conditions per place. [2022-11-20 11:35:56,865 INFO L137 encePairwiseOnDemand]: 273/313 looper letters, 194 selfloop transitions, 148 changer transitions 0/519 dead transitions. [2022-11-20 11:35:56,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 519 transitions, 4249 flow [2022-11-20 11:35:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 11:35:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-20 11:35:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 7020 transitions. [2022-11-20 11:35:56,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6061652707020119 [2022-11-20 11:35:56,874 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 7020 transitions. [2022-11-20 11:35:56,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 7020 transitions. [2022-11-20 11:35:56,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:35:56,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 7020 transitions. [2022-11-20 11:35:56,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 189.72972972972974) internal successors, (7020), 37 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:56,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 313.0) internal successors, (11894), 38 states have internal predecessors, (11894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:56,898 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 313.0) internal successors, (11894), 38 states have internal predecessors, (11894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:56,899 INFO L175 Difference]: Start difference. First operand has 570 places, 447 transitions, 3315 flow. Second operand 37 states and 7020 transitions. [2022-11-20 11:35:56,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 519 transitions, 4249 flow [2022-11-20 11:35:56,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 519 transitions, 4034 flow, removed 12 selfloop flow, removed 28 redundant places. [2022-11-20 11:35:57,003 INFO L231 Difference]: Finished difference. Result has 585 places, 454 transitions, 3568 flow [2022-11-20 11:35:57,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=3110, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3568, PETRI_PLACES=585, PETRI_TRANSITIONS=454} [2022-11-20 11:35:57,005 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 295 predicate places. [2022-11-20 11:35:57,005 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 454 transitions, 3568 flow [2022-11-20 11:35:57,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 186.36363636363637) internal successors, (6150), 33 states have internal predecessors, (6150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:57,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:35:57,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 11:35:57,007 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:35:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash 324364063, now seen corresponding path program 1 times [2022-11-20 11:35:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:57,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951320256] [2022-11-20 11:35:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:57,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:58,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:58,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951320256] [2022-11-20 11:35:58,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951320256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:58,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:58,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-20 11:35:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068663676] [2022-11-20 11:35:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:58,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:35:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:35:58,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:35:58,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 313 [2022-11-20 11:35:58,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 454 transitions, 3568 flow. Second operand has 23 states, 23 states have (on average 209.04347826086956) internal successors, (4808), 23 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:58,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:35:58,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 313 [2022-11-20 11:35:58,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:36:11,586 INFO L130 PetriNetUnfolder]: 6343/20933 cut-off events. [2022-11-20 11:36:11,586 INFO L131 PetriNetUnfolder]: For 29783/29799 co-relation queries the response was YES. [2022-11-20 11:36:11,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44984 conditions, 20933 events. 6343/20933 cut-off events. For 29783/29799 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 210471 event pairs, 1181 based on Foata normal form. 124/19662 useless extension candidates. Maximal degree in co-relation 44866. Up to 3337 conditions per place. [2022-11-20 11:36:11,900 INFO L137 encePairwiseOnDemand]: 282/313 looper letters, 465 selfloop transitions, 166 changer transitions 0/839 dead transitions. [2022-11-20 11:36:11,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 839 transitions, 6069 flow [2022-11-20 11:36:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 11:36:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-20 11:36:11,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 8734 transitions. [2022-11-20 11:36:11,908 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6976038338658147 [2022-11-20 11:36:11,908 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 8734 transitions. [2022-11-20 11:36:11,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 8734 transitions. [2022-11-20 11:36:11,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:36:11,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 8734 transitions. [2022-11-20 11:36:11,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 218.35) internal successors, (8734), 40 states have internal predecessors, (8734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:11,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 313.0) internal successors, (12833), 41 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:11,936 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 313.0) internal successors, (12833), 41 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:11,936 INFO L175 Difference]: Start difference. First operand has 585 places, 454 transitions, 3568 flow. Second operand 40 states and 8734 transitions. [2022-11-20 11:36:11,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 839 transitions, 6069 flow [2022-11-20 11:36:12,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 839 transitions, 5789 flow, removed 18 selfloop flow, removed 31 redundant places. [2022-11-20 11:36:12,139 INFO L231 Difference]: Finished difference. Result has 601 places, 549 transitions, 4308 flow [2022-11-20 11:36:12,140 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=3305, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4308, PETRI_PLACES=601, PETRI_TRANSITIONS=549} [2022-11-20 11:36:12,141 INFO L288 CegarLoopForPetriNet]: 290 programPoint places, 311 predicate places. [2022-11-20 11:36:12,141 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 549 transitions, 4308 flow [2022-11-20 11:36:12,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 209.04347826086956) internal successors, (4808), 23 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:12,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:36:12,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:36:12,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 11:36:12,143 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-11-20 11:36:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:36:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1325370207, now seen corresponding path program 2 times [2022-11-20 11:36:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:36:12,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898702001] [2022-11-20 11:36:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:36:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:36:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:36:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:36:14,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:36:14,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898702001] [2022-11-20 11:36:14,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898702001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:36:14,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:36:14,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-20 11:36:14,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351594838] [2022-11-20 11:36:14,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:36:14,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 11:36:14,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:36:14,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 11:36:14,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 11:36:14,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 313 [2022-11-20 11:36:14,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 549 transitions, 4308 flow. Second operand has 33 states, 33 states have (on average 186.3939393939394) internal successors, (6151), 33 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:14,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:36:14,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 313 [2022-11-20 11:36:14,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:36:31,872 INFO L130 PetriNetUnfolder]: 7231/26423 cut-off events. [2022-11-20 11:36:31,872 INFO L131 PetriNetUnfolder]: For 29156/29485 co-relation queries the response was YES. [2022-11-20 11:36:32,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55881 conditions, 26423 events. 7231/26423 cut-off events. For 29156/29485 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 287583 event pairs, 3097 based on Foata normal form. 58/23988 useless extension candidates. Maximal degree in co-relation 55757. Up to 9039 conditions per place. [2022-11-20 11:36:32,417 INFO L137 encePairwiseOnDemand]: 271/313 looper letters, 295 selfloop transitions, 160 changer transitions 0/644 dead transitions. [2022-11-20 11:36:32,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 644 transitions, 5521 flow [2022-11-20 11:36:32,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 11:36:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-20 11:36:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 8899 transitions. [2022-11-20 11:36:32,429 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6049214873224118 [2022-11-20 11:36:32,430 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 8899 transitions. [2022-11-20 11:36:32,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 8899 transitions. [2022-11-20 11:36:32,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:36:32,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 8899 transitions. [2022-11-20 11:36:32,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 189.3404255319149) internal successors, (8899), 47 states have internal predecessors, (8899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:32,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 313.0) internal successors, (15024), 48 states have internal predecessors, (15024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:32,457 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 313.0) internal successors, (15024), 48 states have internal predecessors, (15024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:36:32,457 INFO L175 Difference]: Start difference. First operand has 601 places, 549 transitions, 4308 flow. Second operand 47 states and 8899 transitions. [2022-11-20 11:36:32,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 644 transitions, 5521 flow