./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8 --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 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:19:39,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:19:39,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:19:39,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:19:39,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:19:39,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:19:39,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:19:39,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:19:39,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:19:39,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:19:39,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:19:39,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:19:39,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:19:39,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:19:39,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:19:39,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:19:39,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:19:39,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:19:39,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:19:39,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:19:39,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:19:39,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:19:39,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:19:39,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:19:39,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:19:39,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:19:39,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:19:39,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:19:39,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:19:39,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:19:39,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:19:39,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:19:39,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:19:39,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:19:39,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:19:39,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:19:39,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:19:39,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:19:39,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:19:39,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:19:39,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:19:39,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:19:39,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:19:39,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:19:39,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:19:39,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:19:39,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:19:39,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:19:39,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:19:39,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:19:39,963 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:19:39,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:19:39,972 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:19:39,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:19:39,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:19:39,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:19:39,974 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:19:39,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:19:39,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:19:39,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:19:39,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:19:39,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:19:39,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:19:39,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:19:39,975 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:19:39,976 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2022-12-13 19:19:40,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:19:40,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:19:40,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:19:40,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:19:40,175 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:19:40,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-12-13 19:19:42,759 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:19:42,945 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:19:42,945 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-12-13 19:19:42,962 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/data/636c62657/e8ceee9976394cb09d261a5c1538ab96/FLAG03c0b33a4 [2022-12-13 19:19:43,332 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/data/636c62657/e8ceee9976394cb09d261a5c1538ab96 [2022-12-13 19:19:43,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:19:43,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:19:43,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:19:43,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:19:43,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:19:43,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56653ffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43, skipping insertion in model container [2022-12-13 19:19:43,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:19:43,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:19:43,562 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_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-12-13 19:19:43,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:19:43,574 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:19:43,598 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_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-12-13 19:19:43,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:19:43,620 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:19:43,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43 WrapperNode [2022-12-13 19:19:43,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:19:43,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:19:43,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:19:43,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:19:43,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,651 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 133 [2022-12-13 19:19:43,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:19:43,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:19:43,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:19:43,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:19:43,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:19:43,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:19:43,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:19:43,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:19:43,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (1/1) ... [2022-12-13 19:19:43,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:19:43,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:19:43,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:19:43,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abfbc84-eaae-4efc-8ba8-c12fcfee7f5f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:19:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 19:19:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 19:19:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:19:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:19:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:19:43,726 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:19:43,823 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:19:43,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:19:44,045 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:19:44,127 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:19:44,127 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 19:19:44,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:19:44 BoogieIcfgContainer [2022-12-13 19:19:44,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:19:44,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:19:44,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:19:44,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:19:44,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:19:43" (1/3) ... [2022-12-13 19:19:44,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2dc2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:19:44, skipping insertion in model container [2022-12-13 19:19:44,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:19:43" (2/3) ... [2022-12-13 19:19:44,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2dc2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:19:44, skipping insertion in model container [2022-12-13 19:19:44,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:19:44" (3/3) ... [2022-12-13 19:19:44,136 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2022-12-13 19:19:44,152 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:19:44,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:19:44,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 19:19:44,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:19:44,208 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:19:44,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 95 transitions, 200 flow [2022-12-13 19:19:44,278 INFO L130 PetriNetUnfolder]: 6/105 cut-off events. [2022-12-13 19:19:44,278 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:19:44,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 105 events. 6/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-12-13 19:19:44,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 95 transitions, 200 flow [2022-12-13 19:19:44,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 94 transitions, 196 flow [2022-12-13 19:19:44,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:19:44,300 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 94 transitions, 196 flow [2022-12-13 19:19:44,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 94 transitions, 196 flow [2022-12-13 19:19:44,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 94 transitions, 196 flow [2022-12-13 19:19:44,328 INFO L130 PetriNetUnfolder]: 6/105 cut-off events. [2022-12-13 19:19:44,328 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:19:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 105 events. 6/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-12-13 19:19:44,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 2644 [2022-12-13 19:19:46,329 INFO L134 LiptonReduction]: Checked pairs total: 4735 [2022-12-13 19:19:46,329 INFO L136 LiptonReduction]: Total number of compositions: 88 [2022-12-13 19:19:46,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:19:46,348 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;@4efd4d88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:19:46,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 19:19:46,353 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2022-12-13 19:19:46,353 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:19:46,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:46,353 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:19:46,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 19:19:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash 545795172, now seen corresponding path program 1 times [2022-12-13 19:19:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:46,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342190941] [2022-12-13 19:19:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:46,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:46,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342190941] [2022-12-13 19:19:46,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342190941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:46,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:46,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:19:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715547139] [2022-12-13 19:19:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:46,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:46,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:46,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:46,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2022-12-13 19:19:46,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:46,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:46,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2022-12-13 19:19:46,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:46,665 INFO L130 PetriNetUnfolder]: 195/325 cut-off events. [2022-12-13 19:19:46,665 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:19:46,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 325 events. 195/325 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1225 event pairs, 33 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 650. Up to 241 conditions per place. [2022-12-13 19:19:46,668 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 22 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2022-12-13 19:19:46,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 110 flow [2022-12-13 19:19:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2022-12-13 19:19:46,677 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47358834244080145 [2022-12-13 19:19:46,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2022-12-13 19:19:46,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2022-12-13 19:19:46,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:46,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2022-12-13 19:19:46,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:46,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:46,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:46,686 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 72 flow. Second operand 3 states and 260 transitions. [2022-12-13 19:19:46,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 110 flow [2022-12-13 19:19:46,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:46,689 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 57 flow [2022-12-13 19:19:46,691 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2022-12-13 19:19:46,693 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2022-12-13 19:19:46,694 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 57 flow [2022-12-13 19:19:46,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:46,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:46,694 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:46,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:19:46,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 19:19:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash 523094086, now seen corresponding path program 1 times [2022-12-13 19:19:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:46,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358003308] [2022-12-13 19:19:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:46,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:19:46,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:19:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:19:46,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:19:46,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:19:46,732 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 19:19:46,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 19:19:46,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 19:19:46,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 19:19:46,733 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-12-13 19:19:46,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 19:19:46,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 19:19:46,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 19:19:46,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 19:19:46,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 19:19:46,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 19:19:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:19:46,735 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 19:19:46,737 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:19:46,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 19:19:46,760 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:19:46,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 152 transitions, 328 flow [2022-12-13 19:19:46,780 INFO L130 PetriNetUnfolder]: 8/162 cut-off events. [2022-12-13 19:19:46,780 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:19:46,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 162 events. 8/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 319 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 171. Up to 6 conditions per place. [2022-12-13 19:19:46,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 152 transitions, 328 flow [2022-12-13 19:19:46,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 138 transitions, 291 flow [2022-12-13 19:19:46,782 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:19:46,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 138 transitions, 291 flow [2022-12-13 19:19:46,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 138 transitions, 291 flow [2022-12-13 19:19:46,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 138 transitions, 291 flow [2022-12-13 19:19:46,798 INFO L130 PetriNetUnfolder]: 8/162 cut-off events. [2022-12-13 19:19:46,799 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:19:46,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 162 events. 8/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 319 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 147. Up to 6 conditions per place. [2022-12-13 19:19:46,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 8688 [2022-12-13 19:19:48,845 INFO L134 LiptonReduction]: Checked pairs total: 27016 [2022-12-13 19:19:48,845 INFO L136 LiptonReduction]: Total number of compositions: 108 [2022-12-13 19:19:48,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:19:48,848 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;@4efd4d88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:19:48,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 19:19:48,851 INFO L130 PetriNetUnfolder]: 2/17 cut-off events. [2022-12-13 19:19:48,851 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:19:48,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:48,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:48,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 19:19:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2107287140, now seen corresponding path program 1 times [2022-12-13 19:19:48,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:48,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524746965] [2022-12-13 19:19:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:48,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:48,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524746965] [2022-12-13 19:19:48,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524746965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:48,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:48,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:19:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17907139] [2022-12-13 19:19:48,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:48,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:48,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:48,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:48,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 260 [2022-12-13 19:19:48,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:48,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:48,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 260 [2022-12-13 19:19:48,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:50,066 INFO L130 PetriNetUnfolder]: 9770/14322 cut-off events. [2022-12-13 19:19:50,066 INFO L131 PetriNetUnfolder]: For 261/261 co-relation queries the response was YES. [2022-12-13 19:19:50,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28861 conditions, 14322 events. 9770/14322 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 97256 event pairs, 3751 based on Foata normal form. 1423/12573 useless extension candidates. Maximal degree in co-relation 28850. Up to 10207 conditions per place. [2022-12-13 19:19:50,135 INFO L137 encePairwiseOnDemand]: 231/260 looper letters, 72 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2022-12-13 19:19:50,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 386 flow [2022-12-13 19:19:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2022-12-13 19:19:50,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5756410256410256 [2022-12-13 19:19:50,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2022-12-13 19:19:50,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2022-12-13 19:19:50,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:50,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2022-12-13 19:19:50,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:50,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:50,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:50,148 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 133 flow. Second operand 3 states and 449 transitions. [2022-12-13 19:19:50,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 386 flow [2022-12-13 19:19:50,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 383 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:50,150 INFO L231 Difference]: Finished difference. Result has 64 places, 72 transitions, 274 flow [2022-12-13 19:19:50,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=64, PETRI_TRANSITIONS=72} [2022-12-13 19:19:50,150 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2022-12-13 19:19:50,150 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 72 transitions, 274 flow [2022-12-13 19:19:50,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:50,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:50,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:50,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:19:50,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 19:19:50,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash 2107287218, now seen corresponding path program 1 times [2022-12-13 19:19:50,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:50,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928791724] [2022-12-13 19:19:50,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:50,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:50,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928791724] [2022-12-13 19:19:50,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928791724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:50,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:50,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:19:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461730985] [2022-12-13 19:19:50,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:50,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:50,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:50,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:50,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 260 [2022-12-13 19:19:50,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 72 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:50,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:50,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 260 [2022-12-13 19:19:50,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:51,536 INFO L130 PetriNetUnfolder]: 11137/16563 cut-off events. [2022-12-13 19:19:51,536 INFO L131 PetriNetUnfolder]: For 2982/2982 co-relation queries the response was YES. [2022-12-13 19:19:51,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40539 conditions, 16563 events. 11137/16563 cut-off events. For 2982/2982 co-relation queries the response was YES. Maximal size of possible extension queue 935. Compared 118363 event pairs, 2832 based on Foata normal form. 540/16692 useless extension candidates. Maximal degree in co-relation 40525. Up to 10845 conditions per place. [2022-12-13 19:19:51,623 INFO L137 encePairwiseOnDemand]: 234/260 looper letters, 88 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2022-12-13 19:19:51,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 113 transitions, 619 flow [2022-12-13 19:19:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:19:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:19:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2022-12-13 19:19:51,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5679487179487179 [2022-12-13 19:19:51,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2022-12-13 19:19:51,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2022-12-13 19:19:51,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:51,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2022-12-13 19:19:51,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:51,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:51,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 260.0) internal successors, (1040), 4 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:51,630 INFO L175 Difference]: Start difference. First operand has 64 places, 72 transitions, 274 flow. Second operand 3 states and 443 transitions. [2022-12-13 19:19:51,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 113 transitions, 619 flow [2022-12-13 19:19:51,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 113 transitions, 581 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:19:51,669 INFO L231 Difference]: Finished difference. Result has 66 places, 91 transitions, 454 flow [2022-12-13 19:19:51,670 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=454, PETRI_PLACES=66, PETRI_TRANSITIONS=91} [2022-12-13 19:19:51,670 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2022-12-13 19:19:51,670 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 91 transitions, 454 flow [2022-12-13 19:19:51,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:51,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:51,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:51,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:19:51,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 19:19:51,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash -2121596040, now seen corresponding path program 1 times [2022-12-13 19:19:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:51,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628129729] [2022-12-13 19:19:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:51,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:51,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:51,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628129729] [2022-12-13 19:19:51,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628129729] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:51,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:51,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:19:51,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717923434] [2022-12-13 19:19:51,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:51,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:19:51,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:51,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:19:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:19:51,765 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2022-12-13 19:19:51,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 91 transitions, 454 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:51,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:51,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2022-12-13 19:19:51,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:53,310 INFO L130 PetriNetUnfolder]: 12256/17964 cut-off events. [2022-12-13 19:19:53,310 INFO L131 PetriNetUnfolder]: For 10319/10319 co-relation queries the response was YES. [2022-12-13 19:19:53,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51094 conditions, 17964 events. 12256/17964 cut-off events. For 10319/10319 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 127424 event pairs, 1496 based on Foata normal form. 290/17914 useless extension candidates. Maximal degree in co-relation 51078. Up to 12319 conditions per place. [2022-12-13 19:19:53,404 INFO L137 encePairwiseOnDemand]: 235/260 looper letters, 151 selfloop transitions, 47 changer transitions 0/203 dead transitions. [2022-12-13 19:19:53,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 203 transitions, 1296 flow [2022-12-13 19:19:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:19:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:19:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2022-12-13 19:19:53,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148351648351648 [2022-12-13 19:19:53,407 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2022-12-13 19:19:53,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2022-12-13 19:19:53,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:53,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2022-12-13 19:19:53,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:53,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:53,412 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:53,412 INFO L175 Difference]: Start difference. First operand has 66 places, 91 transitions, 454 flow. Second operand 7 states and 937 transitions. [2022-12-13 19:19:53,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 203 transitions, 1296 flow [2022-12-13 19:19:53,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 203 transitions, 1236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:19:53,473 INFO L231 Difference]: Finished difference. Result has 74 places, 123 transitions, 834 flow [2022-12-13 19:19:53,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=834, PETRI_PLACES=74, PETRI_TRANSITIONS=123} [2022-12-13 19:19:53,474 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2022-12-13 19:19:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 123 transitions, 834 flow [2022-12-13 19:19:53,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:53,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:53,474 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:53,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:19:53,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 19:19:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2121596042, now seen corresponding path program 1 times [2022-12-13 19:19:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:53,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310003472] [2022-12-13 19:19:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:53,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:53,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310003472] [2022-12-13 19:19:53,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310003472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:53,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:53,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:19:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115812545] [2022-12-13 19:19:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:53,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:19:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:19:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:19:53,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 260 [2022-12-13 19:19:53,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 123 transitions, 834 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:53,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:53,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 260 [2022-12-13 19:19:53,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:19:55,169 INFO L130 PetriNetUnfolder]: 12337/18227 cut-off events. [2022-12-13 19:19:55,169 INFO L131 PetriNetUnfolder]: For 21148/21148 co-relation queries the response was YES. [2022-12-13 19:19:55,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59047 conditions, 18227 events. 12337/18227 cut-off events. For 21148/21148 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 131646 event pairs, 2402 based on Foata normal form. 270/18133 useless extension candidates. Maximal degree in co-relation 59027. Up to 10510 conditions per place. [2022-12-13 19:19:55,249 INFO L137 encePairwiseOnDemand]: 235/260 looper letters, 156 selfloop transitions, 77 changer transitions 0/238 dead transitions. [2022-12-13 19:19:55,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 238 transitions, 1852 flow [2022-12-13 19:19:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:19:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:19:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 961 transitions. [2022-12-13 19:19:55,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.528021978021978 [2022-12-13 19:19:55,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 961 transitions. [2022-12-13 19:19:55,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 961 transitions. [2022-12-13 19:19:55,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:19:55,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 961 transitions. [2022-12-13 19:19:55,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.28571428571428) internal successors, (961), 7 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:55,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:55,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 260.0) internal successors, (2080), 8 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:55,255 INFO L175 Difference]: Start difference. First operand has 74 places, 123 transitions, 834 flow. Second operand 7 states and 961 transitions. [2022-12-13 19:19:55,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 238 transitions, 1852 flow [2022-12-13 19:19:55,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 238 transitions, 1820 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:19:55,303 INFO L231 Difference]: Finished difference. Result has 84 places, 159 transitions, 1431 flow [2022-12-13 19:19:55,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=260, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1431, PETRI_PLACES=84, PETRI_TRANSITIONS=159} [2022-12-13 19:19:55,304 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2022-12-13 19:19:55,304 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 159 transitions, 1431 flow [2022-12-13 19:19:55,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:55,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:55,304 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:55,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:19:55,305 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 19:19:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1010885641, now seen corresponding path program 1 times [2022-12-13 19:19:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:55,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621727964] [2022-12-13 19:19:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:19:55,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:19:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:19:55,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:19:55,322 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 26 remaining) [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 26 remaining) [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 26 remaining) [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 26 remaining) [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 26 remaining) [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 26 remaining) [2022-12-13 19:19:55,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 26 remaining) [2022-12-13 19:19:55,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 26 remaining) [2022-12-13 19:19:55,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 26 remaining) [2022-12-13 19:19:55,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 26 remaining) [2022-12-13 19:19:55,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 26 remaining) [2022-12-13 19:19:55,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 26 remaining) [2022-12-13 19:19:55,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 26 remaining) [2022-12-13 19:19:55,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 26 remaining) [2022-12-13 19:19:55,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:19:55,324 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 19:19:55,325 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:19:55,325 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 19:19:55,357 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:19:55,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 209 transitions, 460 flow [2022-12-13 19:19:55,376 INFO L130 PetriNetUnfolder]: 10/219 cut-off events. [2022-12-13 19:19:55,377 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 19:19:55,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 219 events. 10/219 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 571 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2022-12-13 19:19:55,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 209 transitions, 460 flow [2022-12-13 19:19:55,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 182 transitions, 388 flow [2022-12-13 19:19:55,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:19:55,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 182 transitions, 388 flow [2022-12-13 19:19:55,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 182 transitions, 388 flow [2022-12-13 19:19:55,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 182 transitions, 388 flow [2022-12-13 19:19:55,396 INFO L130 PetriNetUnfolder]: 10/219 cut-off events. [2022-12-13 19:19:55,396 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-13 19:19:55,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 219 events. 10/219 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 568 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 209. Up to 8 conditions per place. [2022-12-13 19:19:55,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 18516 [2022-12-13 19:19:58,399 INFO L134 LiptonReduction]: Checked pairs total: 51717 [2022-12-13 19:19:58,399 INFO L136 LiptonReduction]: Total number of compositions: 149 [2022-12-13 19:19:58,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:19:58,402 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;@4efd4d88, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:19:58,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-12-13 19:19:58,405 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2022-12-13 19:19:58,405 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:19:58,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:19:58,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:19:58,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-13 19:19:58,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:19:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash -801894874, now seen corresponding path program 1 times [2022-12-13 19:19:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:19:58,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672877776] [2022-12-13 19:19:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:19:58,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:19:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:19:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:19:58,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:19:58,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672877776] [2022-12-13 19:19:58,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672877776] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:19:58,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:19:58,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:19:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726445064] [2022-12-13 19:19:58,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:19:58,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:19:58,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:19:58,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:19:58,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:19:58,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 358 [2022-12-13 19:19:58,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:19:58,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:19:58,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 358 [2022-12-13 19:19:58,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:15,029 INFO L130 PetriNetUnfolder]: 200709/258804 cut-off events. [2022-12-13 19:20:15,030 INFO L131 PetriNetUnfolder]: For 8061/8061 co-relation queries the response was YES. [2022-12-13 19:20:15,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522956 conditions, 258804 events. 200709/258804 cut-off events. For 8061/8061 co-relation queries the response was YES. Maximal size of possible extension queue 8177. Compared 1754273 event pairs, 79242 based on Foata normal form. 19307/205424 useless extension candidates. Maximal degree in co-relation 522944. Up to 256771 conditions per place. [2022-12-13 19:20:16,311 INFO L137 encePairwiseOnDemand]: 345/358 looper letters, 85 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2022-12-13 19:20:16,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 402 flow [2022-12-13 19:20:16,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:20:16,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:20:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2022-12-13 19:20:16,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.527001862197393 [2022-12-13 19:20:16,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2022-12-13 19:20:16,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2022-12-13 19:20:16,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:16,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2022-12-13 19:20:16,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,317 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 184 flow. Second operand 3 states and 566 transitions. [2022-12-13 19:20:16,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 402 flow [2022-12-13 19:20:16,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 94 transitions, 393 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 19:20:16,325 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 207 flow [2022-12-13 19:20:16,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2022-12-13 19:20:16,326 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places. [2022-12-13 19:20:16,326 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 207 flow [2022-12-13 19:20:16,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:16,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:16,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:20:16,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-13 19:20:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1821789236, now seen corresponding path program 1 times [2022-12-13 19:20:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424412134] [2022-12-13 19:20:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:16,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424412134] [2022-12-13 19:20:16,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424412134] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:16,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:20:16,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:20:16,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102026893] [2022-12-13 19:20:16,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:16,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:20:16,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:16,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:20:16,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:20:16,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2022-12-13 19:20:16,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:16,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:16,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2022-12-13 19:20:16,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:42,292 INFO L130 PetriNetUnfolder]: 292116/383133 cut-off events. [2022-12-13 19:20:42,292 INFO L131 PetriNetUnfolder]: For 25710/25710 co-relation queries the response was YES. [2022-12-13 19:20:43,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802501 conditions, 383133 events. 292116/383133 cut-off events. For 25710/25710 co-relation queries the response was YES. Maximal size of possible extension queue 13512. Compared 2892022 event pairs, 50130 based on Foata normal form. 0/296787 useless extension candidates. Maximal degree in co-relation 802487. Up to 231199 conditions per place. [2022-12-13 19:20:44,339 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 197 selfloop transitions, 53 changer transitions 0/255 dead transitions. [2022-12-13 19:20:44,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 255 transitions, 1144 flow [2022-12-13 19:20:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:20:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:20:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1321 transitions. [2022-12-13 19:20:44,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5271348762968875 [2022-12-13 19:20:44,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1321 transitions. [2022-12-13 19:20:44,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1321 transitions. [2022-12-13 19:20:44,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:44,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1321 transitions. [2022-12-13 19:20:44,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.71428571428572) internal successors, (1321), 7 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:44,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:44,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:44,356 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 207 flow. Second operand 7 states and 1321 transitions. [2022-12-13 19:20:44,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 255 transitions, 1144 flow [2022-12-13 19:20:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 255 transitions, 1138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:20:44,375 INFO L231 Difference]: Finished difference. Result has 95 places, 129 transitions, 667 flow [2022-12-13 19:20:44,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=667, PETRI_PLACES=95, PETRI_TRANSITIONS=129} [2022-12-13 19:20:44,376 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 10 predicate places. [2022-12-13 19:20:44,376 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 129 transitions, 667 flow [2022-12-13 19:20:44,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:44,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:44,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:20:44,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:20:44,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-13 19:20:44,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1821789235, now seen corresponding path program 1 times [2022-12-13 19:20:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:44,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280531876] [2022-12-13 19:20:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:44,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:44,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280531876] [2022-12-13 19:20:44,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280531876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:44,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:20:44,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:20:44,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976143453] [2022-12-13 19:20:44,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:44,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:20:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:44,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:20:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:20:44,486 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2022-12-13 19:20:44,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 129 transitions, 667 flow. Second operand has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:44,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:44,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2022-12-13 19:20:44,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:19,614 INFO L130 PetriNetUnfolder]: 338025/449454 cut-off events. [2022-12-13 19:21:19,614 INFO L131 PetriNetUnfolder]: For 247251/247251 co-relation queries the response was YES. [2022-12-13 19:21:20,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242496 conditions, 449454 events. 338025/449454 cut-off events. For 247251/247251 co-relation queries the response was YES. Maximal size of possible extension queue 16892. Compared 3579646 event pairs, 41460 based on Foata normal form. 13812/448152 useless extension candidates. Maximal degree in co-relation 1242476. Up to 299134 conditions per place. [2022-12-13 19:21:22,516 INFO L137 encePairwiseOnDemand]: 319/358 looper letters, 237 selfloop transitions, 74 changer transitions 0/316 dead transitions. [2022-12-13 19:21:22,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 316 transitions, 2092 flow [2022-12-13 19:21:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:21:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:21:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1321 transitions. [2022-12-13 19:21:22,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5271348762968875 [2022-12-13 19:21:22,521 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1321 transitions. [2022-12-13 19:21:22,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1321 transitions. [2022-12-13 19:21:22,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:22,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1321 transitions. [2022-12-13 19:21:22,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.71428571428572) internal successors, (1321), 7 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:22,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:22,531 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:22,531 INFO L175 Difference]: Start difference. First operand has 95 places, 129 transitions, 667 flow. Second operand 7 states and 1321 transitions. [2022-12-13 19:21:22,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 316 transitions, 2092 flow [2022-12-13 19:21:24,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 316 transitions, 2086 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:21:24,457 INFO L231 Difference]: Finished difference. Result has 104 places, 191 transitions, 1531 flow [2022-12-13 19:21:24,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1531, PETRI_PLACES=104, PETRI_TRANSITIONS=191} [2022-12-13 19:21:24,457 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 19 predicate places. [2022-12-13 19:21:24,458 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 191 transitions, 1531 flow [2022-12-13 19:21:24,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.8) internal successors, (759), 5 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:24,458 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:24,458 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:24,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:21:24,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-13 19:21:24,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:24,459 INFO L85 PathProgramCache]: Analyzing trace with hash 518735479, now seen corresponding path program 1 times [2022-12-13 19:21:24,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:24,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863998214] [2022-12-13 19:21:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:21:24,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:24,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863998214] [2022-12-13 19:21:24,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863998214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:24,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:24,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:21:24,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997366547] [2022-12-13 19:21:24,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:24,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:21:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:24,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:21:24,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:21:24,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2022-12-13 19:21:24,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 191 transitions, 1531 flow. Second operand has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:24,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:24,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2022-12-13 19:21:24,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:22:07,876 INFO L130 PetriNetUnfolder]: 366783/486324 cut-off events. [2022-12-13 19:22:07,877 INFO L131 PetriNetUnfolder]: For 755454/755454 co-relation queries the response was YES. [2022-12-13 19:22:09,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625460 conditions, 486324 events. 366783/486324 cut-off events. For 755454/755454 co-relation queries the response was YES. Maximal size of possible extension queue 18609. Compared 3869662 event pairs, 47410 based on Foata normal form. 5004/477756 useless extension candidates. Maximal degree in co-relation 1625435. Up to 337270 conditions per place. [2022-12-13 19:22:11,396 INFO L137 encePairwiseOnDemand]: 323/358 looper letters, 313 selfloop transitions, 90 changer transitions 0/408 dead transitions. [2022-12-13 19:22:11,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 408 transitions, 3683 flow [2022-12-13 19:22:11,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:22:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:22:11,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1302 transitions. [2022-12-13 19:22:11,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5195530726256983 [2022-12-13 19:22:11,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1302 transitions. [2022-12-13 19:22:11,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1302 transitions. [2022-12-13 19:22:11,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:22:11,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1302 transitions. [2022-12-13 19:22:11,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:11,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:11,405 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:11,405 INFO L175 Difference]: Start difference. First operand has 104 places, 191 transitions, 1531 flow. Second operand 7 states and 1302 transitions. [2022-12-13 19:22:11,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 408 transitions, 3683 flow [2022-12-13 19:22:27,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 408 transitions, 3670 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:22:27,040 INFO L231 Difference]: Finished difference. Result has 112 places, 248 transitions, 2449 flow [2022-12-13 19:22:27,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2449, PETRI_PLACES=112, PETRI_TRANSITIONS=248} [2022-12-13 19:22:27,041 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 27 predicate places. [2022-12-13 19:22:27,041 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 248 transitions, 2449 flow [2022-12-13 19:22:27,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:27,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:22:27,041 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:22:27,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:22:27,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-13 19:22:27,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:22:27,042 INFO L85 PathProgramCache]: Analyzing trace with hash 518735446, now seen corresponding path program 1 times [2022-12-13 19:22:27,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:22:27,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514652283] [2022-12-13 19:22:27,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:22:27,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:22:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:22:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:22:27,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:22:27,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514652283] [2022-12-13 19:22:27,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514652283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:22:27,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:22:27,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:22:27,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134343762] [2022-12-13 19:22:27,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:22:27,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:22:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:22:27,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:22:27,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:22:27,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 358 [2022-12-13 19:22:27,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 248 transitions, 2449 flow. Second operand has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:27,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:22:27,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 358 [2022-12-13 19:22:27,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:23:16,715 INFO L130 PetriNetUnfolder]: 358773/477228 cut-off events. [2022-12-13 19:23:16,715 INFO L131 PetriNetUnfolder]: For 1165377/1165377 co-relation queries the response was YES. [2022-12-13 19:23:18,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750634 conditions, 477228 events. 358773/477228 cut-off events. For 1165377/1165377 co-relation queries the response was YES. Maximal size of possible extension queue 18605. Compared 3827696 event pairs, 46774 based on Foata normal form. 5004/468852 useless extension candidates. Maximal degree in co-relation 1750604. Up to 334288 conditions per place. [2022-12-13 19:23:20,447 INFO L137 encePairwiseOnDemand]: 323/358 looper letters, 298 selfloop transitions, 90 changer transitions 0/393 dead transitions. [2022-12-13 19:23:20,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 393 transitions, 3949 flow [2022-12-13 19:23:20,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:23:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:23:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1302 transitions. [2022-12-13 19:23:20,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5195530726256983 [2022-12-13 19:23:20,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1302 transitions. [2022-12-13 19:23:20,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1302 transitions. [2022-12-13 19:23:20,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:23:20,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1302 transitions. [2022-12-13 19:23:20,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:20,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:20,459 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 358.0) internal successors, (2864), 8 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:20,459 INFO L175 Difference]: Start difference. First operand has 112 places, 248 transitions, 2449 flow. Second operand 7 states and 1302 transitions. [2022-12-13 19:23:20,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 393 transitions, 3949 flow [2022-12-13 19:23:38,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 393 transitions, 3893 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:23:38,248 INFO L231 Difference]: Finished difference. Result has 117 places, 254 transitions, 2647 flow [2022-12-13 19:23:38,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2647, PETRI_PLACES=117, PETRI_TRANSITIONS=254} [2022-12-13 19:23:38,248 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 32 predicate places. [2022-12-13 19:23:38,249 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 254 transitions, 2647 flow [2022-12-13 19:23:38,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:38,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:23:38,249 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:23:38,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:23:38,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-13 19:23:38,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:23:38,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1702601178, now seen corresponding path program 1 times [2022-12-13 19:23:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:23:38,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972290934] [2022-12-13 19:23:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:23:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:23:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:23:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:23:38,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:23:38,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972290934] [2022-12-13 19:23:38,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972290934] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:23:38,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:23:38,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:23:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351503015] [2022-12-13 19:23:38,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:23:38,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:23:38,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:23:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:23:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:23:38,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 358 [2022-12-13 19:23:38,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 254 transitions, 2647 flow. Second operand has 7 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:38,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:23:38,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 358 [2022-12-13 19:23:38,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:24:39,053 INFO L130 PetriNetUnfolder]: 416790/552933 cut-off events. [2022-12-13 19:24:39,053 INFO L131 PetriNetUnfolder]: For 1504395/1504395 co-relation queries the response was YES. [2022-12-13 19:24:40,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036625 conditions, 552933 events. 416790/552933 cut-off events. For 1504395/1504395 co-relation queries the response was YES. Maximal size of possible extension queue 21744. Compared 4487773 event pairs, 36204 based on Foata normal form. 6906/545493 useless extension candidates. Maximal degree in co-relation 2036594. Up to 314800 conditions per place. [2022-12-13 19:24:43,587 INFO L137 encePairwiseOnDemand]: 320/358 looper letters, 416 selfloop transitions, 183 changer transitions 0/604 dead transitions. [2022-12-13 19:24:43,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 604 transitions, 6257 flow [2022-12-13 19:24:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:24:43,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:24:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2045 transitions. [2022-12-13 19:24:43,591 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5192991366175723 [2022-12-13 19:24:43,591 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2045 transitions. [2022-12-13 19:24:43,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2045 transitions. [2022-12-13 19:24:43,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:24:43,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2045 transitions. [2022-12-13 19:24:43,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:43,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:43,600 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:43,600 INFO L175 Difference]: Start difference. First operand has 117 places, 254 transitions, 2647 flow. Second operand 11 states and 2045 transitions. [2022-12-13 19:24:43,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 604 transitions, 6257 flow [2022-12-13 19:25:13,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 604 transitions, 6238 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 19:25:13,932 INFO L231 Difference]: Finished difference. Result has 129 places, 333 transitions, 4235 flow [2022-12-13 19:25:13,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4235, PETRI_PLACES=129, PETRI_TRANSITIONS=333} [2022-12-13 19:25:13,932 INFO L288 CegarLoopForPetriNet]: 85 programPoint places, 44 predicate places. [2022-12-13 19:25:13,932 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 333 transitions, 4235 flow [2022-12-13 19:25:13,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:13,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:25:13,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:25:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:25:13,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 31 more)] === [2022-12-13 19:25:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:25:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1702601151, now seen corresponding path program 1 times [2022-12-13 19:25:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:25:13,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980562547] [2022-12-13 19:25:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:25:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:14,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:25:14,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980562547] [2022-12-13 19:25:14,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980562547] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:25:14,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:25:14,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:25:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794379163] [2022-12-13 19:25:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:25:14,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:25:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:25:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:25:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:25:14,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 358 [2022-12-13 19:25:14,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 333 transitions, 4235 flow. Second operand has 7 states, 7 states have (on average 147.85714285714286) internal successors, (1035), 7 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:14,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:25:14,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 358 [2022-12-13 19:25:14,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:26:25,511 INFO L130 PetriNetUnfolder]: 436611/583128 cut-off events. [2022-12-13 19:26:25,512 INFO L131 PetriNetUnfolder]: For 2538513/2538513 co-relation queries the response was YES. [2022-12-13 19:26:27,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2350460 conditions, 583128 events. 436611/583128 cut-off events. For 2538513/2538513 co-relation queries the response was YES. Maximal size of possible extension queue 23732. Compared 4843614 event pairs, 41526 based on Foata normal form. 8496/577110 useless extension candidates. Maximal degree in co-relation 2350424. Up to 334504 conditions per place. [2022-12-13 19:26:31,086 INFO L137 encePairwiseOnDemand]: 320/358 looper letters, 521 selfloop transitions, 184 changer transitions 0/710 dead transitions. [2022-12-13 19:26:31,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 710 transitions, 8762 flow [2022-12-13 19:26:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:26:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:26:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2025 transitions. [2022-12-13 19:26:31,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5142204164550533 [2022-12-13 19:26:31,091 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2025 transitions. [2022-12-13 19:26:31,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2025 transitions. [2022-12-13 19:26:31,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:26:31,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2025 transitions. [2022-12-13 19:26:31,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 184.0909090909091) internal successors, (2025), 11 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:31,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:31,105 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 358.0) internal successors, (4296), 12 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:26:31,106 INFO L175 Difference]: Start difference. First operand has 129 places, 333 transitions, 4235 flow. Second operand 11 states and 2025 transitions. [2022-12-13 19:26:31,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 710 transitions, 8762 flow