./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_5.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_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/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_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/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_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/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 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 --- 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 15:29:06,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:29:06,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:29:06,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:29:06,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:29:06,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:29:06,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:29:06,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:29:06,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:29:06,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:29:06,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:29:06,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:29:06,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:29:06,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:29:06,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:29:06,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:29:06,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:29:06,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:29:06,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:29:06,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:29:06,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:29:06,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:29:06,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:29:06,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:29:06,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:29:06,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:29:06,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:29:06,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:29:06,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:29:06,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:29:06,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:29:06,916 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:29:06,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:29:06,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:29:06,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:29:06,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:29:06,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:29:06,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:29:06,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:29:06,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:29:06,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:29:06,922 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 15:29:06,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:29:06,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:29:06,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:29:06,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:29:06,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:29:06,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:29:06,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:29:06,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:29:06,942 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:29:06,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:29:06,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:29:06,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:29:06,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:29:06,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:29:06,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:29:06,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:29:06,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:29:06,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:29:06,944 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:29:06,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:29:06,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:29:06,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:29:06,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:29:06,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:29:06,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:29:06,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:29:06,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:29:06,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:29:06,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:29:06,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:29:06,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:29:06,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:29:06,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:29:06,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:29:06,946 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:29:06,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:29:06,946 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:29:06,946 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_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 898f8e4708144102795278f9f1417651c36b4d3f17c0ba18e240a325ff6101b3 [2022-12-13 15:29:07,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:29:07,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:29:07,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:29:07,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:29:07,187 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:29:07,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/reorder_5.i [2022-12-13 15:29:09,812 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:29:09,987 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:29:09,987 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/sv-benchmarks/c/pthread/reorder_5.i [2022-12-13 15:29:09,998 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/data/c63f03ad9/2a1a5a0f060d4276adb1a0e5a8cab54b/FLAG6a5b92880 [2022-12-13 15:29:10,008 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/data/c63f03ad9/2a1a5a0f060d4276adb1a0e5a8cab54b [2022-12-13 15:29:10,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:29:10,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:29:10,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:29:10,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:29:10,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:29:10,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e96a235 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10, skipping insertion in model container [2022-12-13 15:29:10,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:29:10,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:29:10,438 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,444 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,447 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,448 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,450 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,452 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,452 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_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-13 15:29:10,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:29:10,460 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:29:10,488 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,490 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,491 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,492 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,493 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,495 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 15:29:10,496 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_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/sv-benchmarks/c/pthread/reorder_5.i[59395,59408] [2022-12-13 15:29:10,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:29:10,569 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:29:10,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10 WrapperNode [2022-12-13 15:29:10,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:29:10,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:29:10,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:29:10,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:29:10,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,620 INFO L138 Inliner]: procedures = 369, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 157 [2022-12-13 15:29:10,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:29:10,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:29:10,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:29:10,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:29:10,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,639 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:29:10,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:29:10,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:29:10,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:29:10,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (1/1) ... [2022-12-13 15:29:10,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:29:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:29:10,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:29:10,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:29:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:29:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:29:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:29:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-13 15:29:10,705 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-13 15:29:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:29:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:29:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-13 15:29:10,705 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-13 15:29:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:29:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:29:10,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:29:10,707 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 15:29:10,826 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:29:10,828 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:29:11,037 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:29:11,047 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:29:11,047 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 15:29:11,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:29:11 BoogieIcfgContainer [2022-12-13 15:29:11,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:29:11,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:29:11,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:29:11,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:29:11,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:29:10" (1/3) ... [2022-12-13 15:29:11,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65698570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:29:11, skipping insertion in model container [2022-12-13 15:29:11,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:29:10" (2/3) ... [2022-12-13 15:29:11,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65698570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:29:11, skipping insertion in model container [2022-12-13 15:29:11,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:29:11" (3/3) ... [2022-12-13 15:29:11,055 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_5.i [2022-12-13 15:29:11,061 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:29:11,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:29:11,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 15:29:11,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:29:11,111 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 15:29:11,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 398 flow [2022-12-13 15:29:11,209 INFO L130 PetriNetUnfolder]: 37/383 cut-off events. [2022-12-13 15:29:11,209 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 15:29:11,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 383 events. 37/383 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1274 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 201. Up to 8 conditions per place. [2022-12-13 15:29:11,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 188 transitions, 398 flow [2022-12-13 15:29:11,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 188 transitions, 398 flow [2022-12-13 15:29:11,221 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:29:11,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 188 transitions, 398 flow [2022-12-13 15:29:11,230 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 188 transitions, 398 flow [2022-12-13 15:29:11,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 188 transitions, 398 flow [2022-12-13 15:29:11,271 INFO L130 PetriNetUnfolder]: 37/383 cut-off events. [2022-12-13 15:29:11,271 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 15:29:11,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 383 events. 37/383 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1274 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 201. Up to 8 conditions per place. [2022-12-13 15:29:11,276 INFO L119 LiptonReduction]: Number of co-enabled transitions 2440 [2022-12-13 15:29:21,447 INFO L134 LiptonReduction]: Checked pairs total: 4038 [2022-12-13 15:29:21,447 INFO L136 LiptonReduction]: Total number of compositions: 198 [2022-12-13 15:29:21,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:29:21,466 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;@287fe479, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:29:21,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 15:29:21,469 INFO L130 PetriNetUnfolder]: 0/10 cut-off events. [2022-12-13 15:29:21,469 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:29:21,469 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:21,470 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:29:21,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash 21091345, now seen corresponding path program 1 times [2022-12-13 15:29:21,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:21,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401275403] [2022-12-13 15:29:21,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:21,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:21,755 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 15:29:21,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:21,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401275403] [2022-12-13 15:29:21,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401275403] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:29:21,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:29:21,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:29:21,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041403105] [2022-12-13 15:29:21,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:29:21,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:29:21,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:29:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:29:21,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 386 [2022-12-13 15:29:21,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 15:29:21,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:21,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 386 [2022-12-13 15:29:21,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:29:21,941 INFO L130 PetriNetUnfolder]: 129/326 cut-off events. [2022-12-13 15:29:21,941 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 15:29:21,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 326 events. 129/326 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1388 event pairs, 80 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 458. Up to 206 conditions per place. [2022-12-13 15:29:21,944 INFO L137 encePairwiseOnDemand]: 372/386 looper letters, 33 selfloop transitions, 10 changer transitions 4/51 dead transitions. [2022-12-13 15:29:21,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 230 flow [2022-12-13 15:29:21,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:29:21,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:29:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2022-12-13 15:29:21,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4585492227979275 [2022-12-13 15:29:21,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2022-12-13 15:29:21,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2022-12-13 15:29:21,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:21,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2022-12-13 15:29:21,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 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 15:29:21,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:29:21,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:29:21,968 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 90 flow. Second operand 3 states and 531 transitions. [2022-12-13 15:29:21,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 230 flow [2022-12-13 15:29:21,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:29:21,972 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 148 flow [2022-12-13 15:29:21,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2022-12-13 15:29:21,976 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2022-12-13 15:29:21,976 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 148 flow [2022-12-13 15:29:21,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 15:29:21,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:21,977 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 15:29:21,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:29:21,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:21,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash 21091344, now seen corresponding path program 1 times [2022-12-13 15:29:21,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:21,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975799949] [2022-12-13 15:29:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:22,040 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 15:29:22,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:22,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975799949] [2022-12-13 15:29:22,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975799949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:29:22,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:29:22,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:29:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964131495] [2022-12-13 15:29:22,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:29:22,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:29:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:29:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:29:22,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 386 [2022-12-13 15:29:22,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 15:29:22,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:22,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 386 [2022-12-13 15:29:22,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:29:22,137 INFO L130 PetriNetUnfolder]: 96/251 cut-off events. [2022-12-13 15:29:22,137 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-13 15:29:22,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 251 events. 96/251 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1046 event pairs, 88 based on Foata normal form. 25/276 useless extension candidates. Maximal degree in co-relation 422. Up to 227 conditions per place. [2022-12-13 15:29:22,139 INFO L137 encePairwiseOnDemand]: 381/386 looper letters, 23 selfloop transitions, 1 changer transitions 2/30 dead transitions. [2022-12-13 15:29:22,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 176 flow [2022-12-13 15:29:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:29:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:29:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions. [2022-12-13 15:29:22,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4378238341968912 [2022-12-13 15:29:22,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions. [2022-12-13 15:29:22,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions. [2022-12-13 15:29:22,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:22,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions. [2022-12-13 15:29:22,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 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 15:29:22,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:29:22,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 386.0) internal successors, (1544), 4 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:29:22,146 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 148 flow. Second operand 3 states and 507 transitions. [2022-12-13 15:29:22,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 176 flow [2022-12-13 15:29:22,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:29:22,147 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 102 flow [2022-12-13 15:29:22,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=386, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2022-12-13 15:29:22,148 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2022-12-13 15:29:22,148 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 102 flow [2022-12-13 15:29:22,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 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 15:29:22,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:22,148 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 15:29:22,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:29:22,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:22,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:22,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1206033798, now seen corresponding path program 1 times [2022-12-13 15:29:22,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:22,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762212880] [2022-12-13 15:29:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:22,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:29:22,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:29:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:29:22,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:29:22,212 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:29:22,213 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 15:29:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-12-13 15:29:22,214 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-12-13 15:29:22,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-12-13 15:29:22,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-12-13 15:29:22,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-12-13 15:29:22,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-12-13 15:29:22,215 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-12-13 15:29:22,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-12-13 15:29:22,216 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-12-13 15:29:22,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:29:22,216 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 15:29:22,218 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:29:22,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 15:29:22,236 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 15:29:22,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 207 transitions, 462 flow [2022-12-13 15:29:22,365 INFO L130 PetriNetUnfolder]: 149/1234 cut-off events. [2022-12-13 15:29:22,366 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 15:29:22,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 1234 events. 149/1234 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6580 event pairs, 1 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 712. Up to 32 conditions per place. [2022-12-13 15:29:22,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 207 transitions, 462 flow [2022-12-13 15:29:22,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 207 transitions, 462 flow [2022-12-13 15:29:22,371 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:29:22,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 207 transitions, 462 flow [2022-12-13 15:29:22,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 207 transitions, 462 flow [2022-12-13 15:29:22,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 207 transitions, 462 flow [2022-12-13 15:29:22,473 INFO L130 PetriNetUnfolder]: 149/1234 cut-off events. [2022-12-13 15:29:22,473 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 15:29:22,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 1234 events. 149/1234 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6580 event pairs, 1 based on Foata normal form. 0/1022 useless extension candidates. Maximal degree in co-relation 712. Up to 32 conditions per place. [2022-12-13 15:29:22,483 INFO L119 LiptonReduction]: Number of co-enabled transitions 5472 [2022-12-13 15:29:31,016 INFO L134 LiptonReduction]: Checked pairs total: 10815 [2022-12-13 15:29:31,016 INFO L136 LiptonReduction]: Total number of compositions: 215 [2022-12-13 15:29:31,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:29:31,019 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;@287fe479, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:29:31,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 15:29:31,022 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-13 15:29:31,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:29:31,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:31,022 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:29:31,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1072860737, now seen corresponding path program 1 times [2022-12-13 15:29:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:31,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424201380] [2022-12-13 15:29:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:31,107 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 15:29:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:31,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424201380] [2022-12-13 15:29:31,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424201380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:29:31,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:29:31,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:29:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170124870] [2022-12-13 15:29:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:29:31,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:29:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:29:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:29:31,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 422 [2022-12-13 15:29:31,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 15:29:31,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:31,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 422 [2022-12-13 15:29:31,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:29:31,667 INFO L130 PetriNetUnfolder]: 3478/5896 cut-off events. [2022-12-13 15:29:31,668 INFO L131 PetriNetUnfolder]: For 760/760 co-relation queries the response was YES. [2022-12-13 15:29:31,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12099 conditions, 5896 events. 3478/5896 cut-off events. For 760/760 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 35359 event pairs, 1550 based on Foata normal form. 0/5018 useless extension candidates. Maximal degree in co-relation 8257. Up to 3136 conditions per place. [2022-12-13 15:29:31,695 INFO L137 encePairwiseOnDemand]: 406/422 looper letters, 55 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2022-12-13 15:29:31,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 344 flow [2022-12-13 15:29:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:29:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:29:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2022-12-13 15:29:31,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4628751974723539 [2022-12-13 15:29:31,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2022-12-13 15:29:31,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2022-12-13 15:29:31,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:31,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2022-12-13 15:29:31,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 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 15:29:31,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 15:29:31,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 15:29:31,704 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 138 flow. Second operand 3 states and 586 transitions. [2022-12-13 15:29:31,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 344 flow [2022-12-13 15:29:31,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 344 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:29:31,708 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 212 flow [2022-12-13 15:29:31,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2022-12-13 15:29:31,709 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-12-13 15:29:31,710 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 212 flow [2022-12-13 15:29:31,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 15:29:31,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:31,710 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:29:31,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:29:31,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:31,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:31,711 INFO L85 PathProgramCache]: Analyzing trace with hash -845885986, now seen corresponding path program 1 times [2022-12-13 15:29:31,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:31,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743520872] [2022-12-13 15:29:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:31,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:31,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:31,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:31,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743520872] [2022-12-13 15:29:31,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743520872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:29:31,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:29:31,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:29:31,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426154803] [2022-12-13 15:29:31,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:29:31,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:29:31,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:31,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:29:31,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:29:31,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 422 [2022-12-13 15:29:31,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 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 15:29:31,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:31,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 422 [2022-12-13 15:29:31,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:29:32,247 INFO L130 PetriNetUnfolder]: 2862/4873 cut-off events. [2022-12-13 15:29:32,247 INFO L131 PetriNetUnfolder]: For 1919/1919 co-relation queries the response was YES. [2022-12-13 15:29:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11348 conditions, 4873 events. 2862/4873 cut-off events. For 1919/1919 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 28038 event pairs, 2621 based on Foata normal form. 0/4709 useless extension candidates. Maximal degree in co-relation 3413. Up to 4525 conditions per place. [2022-12-13 15:29:32,282 INFO L137 encePairwiseOnDemand]: 417/422 looper letters, 40 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2022-12-13 15:29:32,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 278 flow [2022-12-13 15:29:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:29:32,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:29:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2022-12-13 15:29:32,285 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4352290679304897 [2022-12-13 15:29:32,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2022-12-13 15:29:32,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2022-12-13 15:29:32,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:32,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2022-12-13 15:29:32,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 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 15:29:32,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 15:29:32,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 422.0) internal successors, (1688), 4 states have internal predecessors, (1688), 0 states have call successors, (0), 0 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 15:29:32,295 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 212 flow. Second operand 3 states and 551 transitions. [2022-12-13 15:29:32,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 278 flow [2022-12-13 15:29:32,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:29:32,302 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 182 flow [2022-12-13 15:29:32,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2022-12-13 15:29:32,303 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2022-12-13 15:29:32,303 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 182 flow [2022-12-13 15:29:32,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 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 15:29:32,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:32,304 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:29:32,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:29:32,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:32,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:32,304 INFO L85 PathProgramCache]: Analyzing trace with hash -845885985, now seen corresponding path program 1 times [2022-12-13 15:29:32,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:32,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759378980] [2022-12-13 15:29:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:32,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:32,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:32,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759378980] [2022-12-13 15:29:32,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759378980] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:29:32,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148879359] [2022-12-13 15:29:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:32,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:29:32,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:29:32,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:29:32,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:29:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:32,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:29:32,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:29:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:32,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:29:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:32,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148879359] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:29:32,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:29:32,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2022-12-13 15:29:32,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123631149] [2022-12-13 15:29:32,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:29:32,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:29:32,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:32,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:29:32,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:29:33,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 422 [2022-12-13 15:29:33,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 182 flow. Second operand has 9 states, 9 states have (on average 167.33333333333334) internal successors, (1506), 9 states have internal predecessors, (1506), 0 states have call successors, (0), 0 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 15:29:33,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:33,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 422 [2022-12-13 15:29:33,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:29:33,538 INFO L130 PetriNetUnfolder]: 2875/5047 cut-off events. [2022-12-13 15:29:33,538 INFO L131 PetriNetUnfolder]: For 1429/1429 co-relation queries the response was YES. [2022-12-13 15:29:33,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11273 conditions, 5047 events. 2875/5047 cut-off events. For 1429/1429 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 29397 event pairs, 1014 based on Foata normal form. 0/5038 useless extension candidates. Maximal degree in co-relation 11261. Up to 2085 conditions per place. [2022-12-13 15:29:33,552 INFO L137 encePairwiseOnDemand]: 410/422 looper letters, 28 selfloop transitions, 7 changer transitions 67/106 dead transitions. [2022-12-13 15:29:33,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 106 transitions, 582 flow [2022-12-13 15:29:33,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:29:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:29:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1263 transitions. [2022-12-13 15:29:33,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42755585646580907 [2022-12-13 15:29:33,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1263 transitions. [2022-12-13 15:29:33,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1263 transitions. [2022-12-13 15:29:33,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:33,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1263 transitions. [2022-12-13 15:29:33,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:29:33,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 422.0) internal successors, (3376), 8 states have internal predecessors, (3376), 0 states have call successors, (0), 0 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 15:29:33,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 422.0) internal successors, (3376), 8 states have internal predecessors, (3376), 0 states have call successors, (0), 0 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 15:29:33,561 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 182 flow. Second operand 7 states and 1263 transitions. [2022-12-13 15:29:33,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 106 transitions, 582 flow [2022-12-13 15:29:33,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 106 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:29:33,564 INFO L231 Difference]: Finished difference. Result has 46 places, 24 transitions, 103 flow [2022-12-13 15:29:33,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=422, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=24} [2022-12-13 15:29:33,565 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2022-12-13 15:29:33,565 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 103 flow [2022-12-13 15:29:33,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.33333333333334) internal successors, (1506), 9 states have internal predecessors, (1506), 0 states have call successors, (0), 0 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 15:29:33,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:33,566 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 15:29:33,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:29:33,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:29:33,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:33,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1147578355, now seen corresponding path program 1 times [2022-12-13 15:29:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:33,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766131720] [2022-12-13 15:29:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:29:33,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:29:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:29:33,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:29:33,903 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:29:33,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 15:29:33,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-12-13 15:29:33,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-12-13 15:29:33,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-12-13 15:29:33,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-12-13 15:29:33,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-12-13 15:29:33,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-12-13 15:29:33,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-12-13 15:29:33,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-12-13 15:29:33,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-12-13 15:29:33,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:29:33,906 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 15:29:33,907 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:29:33,907 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 15:29:33,940 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-12-13 15:29:33,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 226 transitions, 530 flow [2022-12-13 15:29:34,399 INFO L130 PetriNetUnfolder]: 641/4255 cut-off events. [2022-12-13 15:29:34,399 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 15:29:34,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 4255 events. 641/4255 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 31875 event pairs, 32 based on Foata normal form. 0/3520 useless extension candidates. Maximal degree in co-relation 2451. Up to 192 conditions per place. [2022-12-13 15:29:34,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 226 transitions, 530 flow [2022-12-13 15:29:34,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 226 transitions, 530 flow [2022-12-13 15:29:34,420 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:29:34,420 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 226 transitions, 530 flow [2022-12-13 15:29:34,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 226 transitions, 530 flow [2022-12-13 15:29:34,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 226 transitions, 530 flow [2022-12-13 15:29:34,775 INFO L130 PetriNetUnfolder]: 641/4255 cut-off events. [2022-12-13 15:29:34,775 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 15:29:34,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 4255 events. 641/4255 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 31875 event pairs, 32 based on Foata normal form. 0/3520 useless extension candidates. Maximal degree in co-relation 2451. Up to 192 conditions per place. [2022-12-13 15:29:34,822 INFO L119 LiptonReduction]: Number of co-enabled transitions 9096 [2022-12-13 15:29:42,580 INFO L134 LiptonReduction]: Checked pairs total: 19416 [2022-12-13 15:29:42,580 INFO L136 LiptonReduction]: Total number of compositions: 221 [2022-12-13 15:29:42,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:29:42,581 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;@287fe479, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:29:42,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 15:29:42,583 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 15:29:42,583 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:29:42,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:42,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:29:42,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1515675748, now seen corresponding path program 1 times [2022-12-13 15:29:42,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:42,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766518324] [2022-12-13 15:29:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:42,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:42,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766518324] [2022-12-13 15:29:42,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766518324] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:29:42,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:29:42,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:29:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822008640] [2022-12-13 15:29:42,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:29:42,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:29:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:29:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:29:42,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 447 [2022-12-13 15:29:42,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 15:29:42,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:42,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 447 [2022-12-13 15:29:42,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:29:48,397 INFO L130 PetriNetUnfolder]: 66871/97059 cut-off events. [2022-12-13 15:29:48,397 INFO L131 PetriNetUnfolder]: For 13535/13535 co-relation queries the response was YES. [2022-12-13 15:29:48,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199824 conditions, 97059 events. 66871/97059 cut-off events. For 13535/13535 co-relation queries the response was YES. Maximal size of possible extension queue 1964. Compared 670018 event pairs, 32549 based on Foata normal form. 0/86133 useless extension candidates. Maximal degree in co-relation 64509. Up to 58096 conditions per place. [2022-12-13 15:29:48,774 INFO L137 encePairwiseOnDemand]: 431/447 looper letters, 71 selfloop transitions, 8 changer transitions 2/87 dead transitions. [2022-12-13 15:29:48,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 450 flow [2022-12-13 15:29:48,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:29:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:29:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 635 transitions. [2022-12-13 15:29:48,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4735272184936615 [2022-12-13 15:29:48,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 635 transitions. [2022-12-13 15:29:48,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 635 transitions. [2022-12-13 15:29:48,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:48,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 635 transitions. [2022-12-13 15:29:48,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 15:29:48,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 15:29:48,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 15:29:48,780 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 186 flow. Second operand 3 states and 635 transitions. [2022-12-13 15:29:48,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 450 flow [2022-12-13 15:29:48,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:29:48,802 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 260 flow [2022-12-13 15:29:48,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2022-12-13 15:29:48,802 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2022-12-13 15:29:48,802 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 260 flow [2022-12-13 15:29:48,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 15:29:48,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:48,803 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:29:48,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:29:48,803 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1478637487, now seen corresponding path program 1 times [2022-12-13 15:29:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858234920] [2022-12-13 15:29:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:48,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:48,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858234920] [2022-12-13 15:29:48,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858234920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:29:48,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:29:48,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:29:48,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728552187] [2022-12-13 15:29:48,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:29:48,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:29:48,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:29:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:29:48,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 447 [2022-12-13 15:29:48,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 15:29:48,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:48,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 447 [2022-12-13 15:29:48,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:29:54,217 INFO L130 PetriNetUnfolder]: 53505/77396 cut-off events. [2022-12-13 15:29:54,217 INFO L131 PetriNetUnfolder]: For 27573/27573 co-relation queries the response was YES. [2022-12-13 15:29:54,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176270 conditions, 77396 events. 53505/77396 cut-off events. For 27573/27573 co-relation queries the response was YES. Maximal size of possible extension queue 1676. Compared 515427 event pairs, 49075 based on Foata normal form. 0/74908 useless extension candidates. Maximal degree in co-relation 47716. Up to 73103 conditions per place. [2022-12-13 15:29:54,554 INFO L137 encePairwiseOnDemand]: 442/447 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-12-13 15:29:54,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 344 flow [2022-12-13 15:29:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:29:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:29:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2022-12-13 15:29:54,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44220730797912006 [2022-12-13 15:29:54,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2022-12-13 15:29:54,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2022-12-13 15:29:54,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:29:54,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2022-12-13 15:29:54,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 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 15:29:54,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 15:29:54,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 447.0) internal successors, (1788), 4 states have internal predecessors, (1788), 0 states have call successors, (0), 0 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 15:29:54,561 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 260 flow. Second operand 3 states and 593 transitions. [2022-12-13 15:29:54,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 344 flow [2022-12-13 15:29:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:29:54,601 INFO L231 Difference]: Finished difference. Result has 54 places, 56 transitions, 230 flow [2022-12-13 15:29:54,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=54, PETRI_TRANSITIONS=56} [2022-12-13 15:29:54,602 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2022-12-13 15:29:54,602 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 56 transitions, 230 flow [2022-12-13 15:29:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 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 15:29:54,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:29:54,603 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 15:29:54,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:29:54,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:29:54,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:29:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1478637486, now seen corresponding path program 1 times [2022-12-13 15:29:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:29:54,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531442766] [2022-12-13 15:29:54,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:29:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:54,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:29:54,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531442766] [2022-12-13 15:29:54,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531442766] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:29:54,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425504005] [2022-12-13 15:29:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:29:54,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:29:54,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:29:54,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:29:54,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:29:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:29:54,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:29:54,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:29:54,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:54,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:29:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:29:54,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425504005] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:29:54,822 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:29:54,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-13 15:29:54,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765826] [2022-12-13 15:29:54,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:29:54,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:29:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:29:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:29:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:29:54,896 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 447 [2022-12-13 15:29:54,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 56 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 184.33333333333334) internal successors, (1106), 6 states have internal predecessors, (1106), 0 states have call successors, (0), 0 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 15:29:54,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:29:54,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 447 [2022-12-13 15:29:54,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:30:01,766 INFO L130 PetriNetUnfolder]: 60242/89508 cut-off events. [2022-12-13 15:30:01,766 INFO L131 PetriNetUnfolder]: For 22829/22829 co-relation queries the response was YES. [2022-12-13 15:30:01,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197200 conditions, 89508 events. 60242/89508 cut-off events. For 22829/22829 co-relation queries the response was YES. Maximal size of possible extension queue 1706. Compared 627990 event pairs, 15473 based on Foata normal form. 0/89462 useless extension candidates. Maximal degree in co-relation 197186. Up to 29024 conditions per place. [2022-12-13 15:30:02,108 INFO L137 encePairwiseOnDemand]: 435/447 looper letters, 135 selfloop transitions, 21 changer transitions 5/167 dead transitions. [2022-12-13 15:30:02,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 167 transitions, 944 flow [2022-12-13 15:30:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:30:02,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:30:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1263 transitions. [2022-12-13 15:30:02,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.470917225950783 [2022-12-13 15:30:02,112 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1263 transitions. [2022-12-13 15:30:02,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1263 transitions. [2022-12-13 15:30:02,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:30:02,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1263 transitions. [2022-12-13 15:30:02,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.5) internal successors, (1263), 6 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:30:02,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 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 15:30:02,118 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 447.0) internal successors, (3129), 7 states have internal predecessors, (3129), 0 states have call successors, (0), 0 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 15:30:02,118 INFO L175 Difference]: Start difference. First operand has 54 places, 56 transitions, 230 flow. Second operand 6 states and 1263 transitions. [2022-12-13 15:30:02,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 167 transitions, 944 flow [2022-12-13 15:30:02,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 167 transitions, 943 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:30:02,144 INFO L231 Difference]: Finished difference. Result has 59 places, 64 transitions, 347 flow [2022-12-13 15:30:02,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=447, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=59, PETRI_TRANSITIONS=64} [2022-12-13 15:30:02,145 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2022-12-13 15:30:02,145 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 64 transitions, 347 flow [2022-12-13 15:30:02,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 184.33333333333334) internal successors, (1106), 6 states have internal predecessors, (1106), 0 states have call successors, (0), 0 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 15:30:02,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:30:02,145 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 15:30:02,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:30:02,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f16d05f-0775-4d73-aaf0-ffe3b38927e9/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:30:02,347 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:30:02,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:30:02,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1402849854, now seen corresponding path program 1 times [2022-12-13 15:30:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:30:02,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37550474] [2022-12-13 15:30:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:30:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:30:02,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 15:30:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 15:30:02,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 15:30:02,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-12-13 15:30:02,431 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-12-13 15:30:02,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-12-13 15:30:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:30:02,432 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 15:30:02,432 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 15:30:02,432 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 15:30:02,457 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-12-13 15:30:02,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 245 transitions, 602 flow [2022-12-13 15:30:04,446 INFO L130 PetriNetUnfolder]: 2917/16034 cut-off events. [2022-12-13 15:30:04,446 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-12-13 15:30:04,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18199 conditions, 16034 events. 2917/16034 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 159063 event pairs, 313 based on Foata normal form. 0/13324 useless extension candidates. Maximal degree in co-relation 9147. Up to 1024 conditions per place. [2022-12-13 15:30:04,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 245 transitions, 602 flow [2022-12-13 15:30:04,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 245 transitions, 602 flow [2022-12-13 15:30:04,544 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:30:04,544 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 245 transitions, 602 flow [2022-12-13 15:30:04,544 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 245 transitions, 602 flow [2022-12-13 15:30:04,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 245 transitions, 602 flow [2022-12-13 15:30:06,331 INFO L130 PetriNetUnfolder]: 2917/16034 cut-off events. [2022-12-13 15:30:06,331 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-12-13 15:30:06,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18199 conditions, 16034 events. 2917/16034 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 159063 event pairs, 313 based on Foata normal form. 0/13324 useless extension candidates. Maximal degree in co-relation 9147. Up to 1024 conditions per place. [2022-12-13 15:30:06,556 INFO L119 LiptonReduction]: Number of co-enabled transitions 13312 [2022-12-13 15:30:14,549 INFO L134 LiptonReduction]: Checked pairs total: 31909 [2022-12-13 15:30:14,550 INFO L136 LiptonReduction]: Total number of compositions: 236 [2022-12-13 15:30:14,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:30:14,551 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;@287fe479, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:30:14,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 15:30:14,553 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-13 15:30:14,553 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:30:14,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:30:14,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:30:14,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:30:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:30:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1990600492, now seen corresponding path program 1 times [2022-12-13 15:30:14,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:30:14,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006940874] [2022-12-13 15:30:14,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:30:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:30:14,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:30:14,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006940874] [2022-12-13 15:30:14,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006940874] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:30:14,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:30:14,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:30:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124505967] [2022-12-13 15:30:14,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:30:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:30:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:30:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:30:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:30:14,631 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 481 [2022-12-13 15:30:14,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 15:30:14,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:30:14,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 481 [2022-12-13 15:30:14,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:32:05,545 INFO L130 PetriNetUnfolder]: 1160050/1535627 cut-off events. [2022-12-13 15:32:05,545 INFO L131 PetriNetUnfolder]: For 237721/237721 co-relation queries the response was YES. [2022-12-13 15:32:09,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3167762 conditions, 1535627 events. 1160050/1535627 cut-off events. For 237721/237721 co-relation queries the response was YES. Maximal size of possible extension queue 22607. Compared 11340181 event pairs, 538223 based on Foata normal form. 0/1371360 useless extension candidates. Maximal degree in co-relation 908952. Up to 803188 conditions per place. [2022-12-13 15:32:12,989 INFO L137 encePairwiseOnDemand]: 465/481 looper letters, 87 selfloop transitions, 12 changer transitions 2/107 dead transitions. [2022-12-13 15:32:12,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 576 flow [2022-12-13 15:32:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:32:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:32:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-13 15:32:12,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47401247401247404 [2022-12-13 15:32:12,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2022-12-13 15:32:12,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2022-12-13 15:32:12,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:32:12,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2022-12-13 15:32:12,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 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 15:32:12,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 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 15:32:12,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 481.0) internal successors, (1924), 4 states have internal predecessors, (1924), 0 states have call successors, (0), 0 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 15:32:12,995 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 238 flow. Second operand 3 states and 684 transitions. [2022-12-13 15:32:12,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 576 flow [2022-12-13 15:32:13,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 107 transitions, 576 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:32:13,650 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 336 flow [2022-12-13 15:32:13,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=481, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2022-12-13 15:32:13,650 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2022-12-13 15:32:13,650 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 336 flow [2022-12-13 15:32:13,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 15:32:13,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:32:13,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:32:13,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:32:13,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 15:32:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:32:13,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1990600491, now seen corresponding path program 1 times [2022-12-13 15:32:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:32:13,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040835889] [2022-12-13 15:32:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:32:13,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:32:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:32:13,680 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 15:32:13,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:32:13,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040835889] [2022-12-13 15:32:13,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040835889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:32:13,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:32:13,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:32:13,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259705947] [2022-12-13 15:32:13,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:32:13,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:32:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:32:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:32:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:32:13,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 481 [2022-12-13 15:32:13,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 15:32:13,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:32:13,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 481 [2022-12-13 15:32:13,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand