./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/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_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/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_10863427-dcac-4053-b220-cb9ca9160622/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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- 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 15:59:46,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:59:46,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:59:46,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:59:46,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:59:46,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:59:46,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:59:46,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:59:46,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:59:46,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:59:46,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:59:46,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:59:46,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:59:46,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:59:46,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:59:46,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:59:46,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:59:46,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:59:46,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:59:46,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:59:46,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:59:46,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:59:46,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:59:46,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:59:46,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:59:46,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:59:46,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:59:46,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:59:46,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:59:46,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:59:46,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:59:46,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:59:46,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:59:46,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:59:46,628 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:59:46,628 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:59:46,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:59:46,629 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:59:46,629 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:59:46,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:59:46,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:59:46,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 15:59:46,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:59:46,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:59:46,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:59:46,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:59:46,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:59:46,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:59:46,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:59:46,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:59:46,663 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:59:46,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:59:46,663 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:59:46,663 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:59:46,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:59:46,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:59:46,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:59:46,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:59:46,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:59:46,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:59:46,664 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:59:46,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:59:46,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:59:46,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:59:46,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:59:46,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:59:46,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:59:46,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:59:46,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:59:46,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:59:46,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:59:46,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:59:46,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:59:46,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:59:46,666 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:59:46,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:59:46,667 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:59:46,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:59:46,667 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:59:46,667 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_10863427-dcac-4053-b220-cb9ca9160622/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-12-13 15:59:46,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:59:46,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:59:46,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:59:46,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:59:46,863 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:59:46,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-12-13 15:59:49,355 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:59:49,537 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:59:49,537 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-12-13 15:59:49,544 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/data/e8f90e8e3/0421e9cac8b94dce94a56768f088ee6e/FLAG32ef97d4f [2022-12-13 15:59:49,925 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/data/e8f90e8e3/0421e9cac8b94dce94a56768f088ee6e [2022-12-13 15:59:49,927 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:59:49,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:59:49,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:59:49,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:59:49,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:59:49,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:59:49" (1/1) ... [2022-12-13 15:59:49,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddcaf8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:49, skipping insertion in model container [2022-12-13 15:59:49,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:59:49" (1/1) ... [2022-12-13 15:59:49,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:59:49,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:59:50,092 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_10863427-dcac-4053-b220-cb9ca9160622/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-12-13 15:59:50,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:59:50,105 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:59:50,137 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_10863427-dcac-4053-b220-cb9ca9160622/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-12-13 15:59:50,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:59:50,150 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:59:50,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50 WrapperNode [2022-12-13 15:59:50,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:59:50,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:59:50,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:59:50,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:59:50,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,197 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 706 [2022-12-13 15:59:50,198 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:59:50,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:59:50,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:59:50,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:59:50,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:59:50,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:59:50,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:59:50,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:59:50,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (1/1) ... [2022-12-13 15:59:50,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:59:50,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:59:50,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:59:50,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:59:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:59:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:59:50,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:59:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:59:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 15:59:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 15:59:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 15:59:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 15:59:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 15:59:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 15:59:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:59:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 15:59:50,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:59:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:59:50,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:59:50,306 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 15:59:50,434 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:59:50,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:59:51,111 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:59:51,125 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:59:51,125 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 15:59:51,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:59:51 BoogieIcfgContainer [2022-12-13 15:59:51,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:59:51,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:59:51,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:59:51,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:59:51,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:59:49" (1/3) ... [2022-12-13 15:59:51,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74488657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:59:51, skipping insertion in model container [2022-12-13 15:59:51,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:59:50" (2/3) ... [2022-12-13 15:59:51,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74488657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:59:51, skipping insertion in model container [2022-12-13 15:59:51,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:59:51" (3/3) ... [2022-12-13 15:59:51,136 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-12-13 15:59:51,144 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:59:51,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:59:51,153 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 60 error locations. [2022-12-13 15:59:51,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:59:51,313 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 15:59:51,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 889 places, 970 transitions, 1964 flow [2022-12-13 15:59:51,751 INFO L130 PetriNetUnfolder]: 91/967 cut-off events. [2022-12-13 15:59:51,751 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 15:59:51,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 967 events. 91/967 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4086 event pairs, 0 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-12-13 15:59:51,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 889 places, 970 transitions, 1964 flow [2022-12-13 15:59:51,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 866 places, 946 transitions, 1907 flow [2022-12-13 15:59:51,815 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:59:51,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 866 places, 946 transitions, 1907 flow [2022-12-13 15:59:51,829 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 866 places, 946 transitions, 1907 flow [2022-12-13 15:59:51,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 866 places, 946 transitions, 1907 flow [2022-12-13 15:59:52,109 INFO L130 PetriNetUnfolder]: 90/946 cut-off events. [2022-12-13 15:59:52,109 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:59:52,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 946 events. 90/946 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4039 event pairs, 0 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 730. Up to 2 conditions per place. [2022-12-13 15:59:52,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 354078 [2022-12-13 16:00:38,413 INFO L134 LiptonReduction]: Checked pairs total: 353218 [2022-12-13 16:00:38,413 INFO L136 LiptonReduction]: Total number of compositions: 1272 [2022-12-13 16:00:38,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:00:38,428 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;@5cb8cedd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:00:38,428 INFO L358 AbstractCegarLoop]: Starting to check reachability of 117 error locations. [2022-12-13 16:00:38,429 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 16:00:38,429 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 16:00:38,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:00:38,430 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 16:00:38,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:00:38,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:38,434 INFO L85 PathProgramCache]: Analyzing trace with hash 137261, now seen corresponding path program 1 times [2022-12-13 16:00:38,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:38,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114015916] [2022-12-13 16:00:38,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:38,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:38,631 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 16:00:38,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:38,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114015916] [2022-12-13 16:00:38,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114015916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:38,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:38,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:00:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34356882] [2022-12-13 16:00:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:38,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:00:38,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:00:38,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:00:38,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 917 out of 2242 [2022-12-13 16:00:38,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 917.6666666666666) internal successors, (2753), 3 states have internal predecessors, (2753), 0 states have call successors, (0), 0 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 16:00:38,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:00:38,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 917 of 2242 [2022-12-13 16:00:38,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:00:55,947 INFO L130 PetriNetUnfolder]: 105643/144705 cut-off events. [2022-12-13 16:00:55,947 INFO L131 PetriNetUnfolder]: For 2974/2974 co-relation queries the response was YES. [2022-12-13 16:00:56,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292767 conditions, 144705 events. 105643/144705 cut-off events. For 2974/2974 co-relation queries the response was YES. Maximal size of possible extension queue 4165. Compared 947597 event pairs, 89754 based on Foata normal form. 0/57325 useless extension candidates. Maximal degree in co-relation 141224. Up to 72357 conditions per place. [2022-12-13 16:00:56,599 INFO L137 encePairwiseOnDemand]: 2215/2242 looper letters, 173 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2022-12-13 16:00:56,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 179 transitions, 746 flow [2022-12-13 16:00:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:00:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:00:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2966 transitions. [2022-12-13 16:00:56,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44097531965506986 [2022-12-13 16:00:56,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2966 transitions. [2022-12-13 16:00:56,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2966 transitions. [2022-12-13 16:00:56,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:00:56,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2966 transitions. [2022-12-13 16:00:56,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 988.6666666666666) internal successors, (2966), 3 states have internal predecessors, (2966), 0 states have call successors, (0), 0 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 16:00:56,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:00:56,657 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:00:56,658 INFO L175 Difference]: Start difference. First operand has 106 places, 108 transitions, 231 flow. Second operand 3 states and 2966 transitions. [2022-12-13 16:00:56,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 179 transitions, 746 flow [2022-12-13 16:00:56,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 179 transitions, 728 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 16:00:56,883 INFO L231 Difference]: Finished difference. Result has 90 places, 98 transitions, 248 flow [2022-12-13 16:00:56,885 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=90, PETRI_TRANSITIONS=98} [2022-12-13 16:00:56,888 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -16 predicate places. [2022-12-13 16:00:56,888 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 98 transitions, 248 flow [2022-12-13 16:00:56,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 917.6666666666666) internal successors, (2753), 3 states have internal predecessors, (2753), 0 states have call successors, (0), 0 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 16:00:56,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:00:56,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:00:56,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:00:56,891 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:00:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:00:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash 4262617, now seen corresponding path program 1 times [2022-12-13 16:00:56,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:00:56,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82955965] [2022-12-13 16:00:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:00:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:00:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:00:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:00:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:00:56,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82955965] [2022-12-13 16:00:56,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82955965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:00:56,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:00:56,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:00:56,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791415023] [2022-12-13 16:00:56,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:00:56,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:00:56,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:00:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:00:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:00:57,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 917 out of 2242 [2022-12-13 16:00:57,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 98 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 918.0) internal successors, (2754), 3 states have internal predecessors, (2754), 0 states have call successors, (0), 0 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 16:00:57,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:00:57,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 917 of 2242 [2022-12-13 16:00:57,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:01:11,818 INFO L130 PetriNetUnfolder]: 105643/144702 cut-off events. [2022-12-13 16:01:11,819 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2022-12-13 16:01:11,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291974 conditions, 144702 events. 105643/144702 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 4165. Compared 947219 event pairs, 89754 based on Foata normal form. 0/57331 useless extension candidates. Maximal degree in co-relation 145967. Up to 144702 conditions per place. [2022-12-13 16:01:12,330 INFO L137 encePairwiseOnDemand]: 2238/2242 looper letters, 94 selfloop transitions, 1 changer transitions 0/95 dead transitions. [2022-12-13 16:01:12,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 426 flow [2022-12-13 16:01:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:01:12,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:01:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2844 transitions. [2022-12-13 16:01:12,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42283675289919714 [2022-12-13 16:01:12,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2844 transitions. [2022-12-13 16:01:12,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2844 transitions. [2022-12-13 16:01:12,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:01:12,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2844 transitions. [2022-12-13 16:01:12,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 948.0) internal successors, (2844), 3 states have internal predecessors, (2844), 0 states have call successors, (0), 0 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 16:01:12,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:01:12,353 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:01:12,353 INFO L175 Difference]: Start difference. First operand has 90 places, 98 transitions, 248 flow. Second operand 3 states and 2844 transitions. [2022-12-13 16:01:12,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 426 flow [2022-12-13 16:01:12,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 95 transitions, 414 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:01:12,355 INFO L231 Difference]: Finished difference. Result has 87 places, 95 transitions, 226 flow [2022-12-13 16:01:12,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=87, PETRI_TRANSITIONS=95} [2022-12-13 16:01:12,356 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -19 predicate places. [2022-12-13 16:01:12,356 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 95 transitions, 226 flow [2022-12-13 16:01:12,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 918.0) internal successors, (2754), 3 states have internal predecessors, (2754), 0 states have call successors, (0), 0 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 16:01:12,358 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:01:12,358 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 16:01:12,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 16:01:12,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:01:12,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:12,358 INFO L85 PathProgramCache]: Analyzing trace with hash 4262618, now seen corresponding path program 1 times [2022-12-13 16:01:12,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:12,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716343120] [2022-12-13 16:01:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:12,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:12,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716343120] [2022-12-13 16:01:12,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716343120] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:01:12,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363916556] [2022-12-13 16:01:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:01:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:01:12,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:01:12,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:01:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:12,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:01:12,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:01:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:12,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:01:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:12,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363916556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:01:12,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:01:12,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 16:01:12,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345121152] [2022-12-13 16:01:12,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:01:12,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:01:12,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:01:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:01:12,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 917 out of 2242 [2022-12-13 16:01:12,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 95 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 918.1428571428571) internal successors, (6427), 7 states have internal predecessors, (6427), 0 states have call successors, (0), 0 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 16:01:12,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:01:12,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 917 of 2242 [2022-12-13 16:01:12,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:01:50,183 INFO L130 PetriNetUnfolder]: 264106/361749 cut-off events. [2022-12-13 16:01:50,183 INFO L131 PetriNetUnfolder]: For 1365/1365 co-relation queries the response was YES. [2022-12-13 16:01:50,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729897 conditions, 361749 events. 264106/361749 cut-off events. For 1365/1365 co-relation queries the response was YES. Maximal size of possible extension queue 9103. Compared 2600339 event pairs, 224385 based on Foata normal form. 0/143316 useless extension candidates. Maximal degree in co-relation 729889. Up to 72355 conditions per place. [2022-12-13 16:01:51,452 INFO L137 encePairwiseOnDemand]: 2233/2242 looper letters, 413 selfloop transitions, 21 changer transitions 0/434 dead transitions. [2022-12-13 16:01:51,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 434 transitions, 1826 flow [2022-12-13 16:01:51,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:01:51,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:01:51,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5945 transitions. [2022-12-13 16:01:51,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4419417187035385 [2022-12-13 16:01:51,469 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5945 transitions. [2022-12-13 16:01:51,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5945 transitions. [2022-12-13 16:01:51,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:01:51,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5945 transitions. [2022-12-13 16:01:51,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 990.8333333333334) internal successors, (5945), 6 states have internal predecessors, (5945), 0 states have call successors, (0), 0 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 16:01:51,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 2242.0) internal successors, (15694), 7 states have internal predecessors, (15694), 0 states have call successors, (0), 0 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 16:01:51,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 2242.0) internal successors, (15694), 7 states have internal predecessors, (15694), 0 states have call successors, (0), 0 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 16:01:51,516 INFO L175 Difference]: Start difference. First operand has 87 places, 95 transitions, 226 flow. Second operand 6 states and 5945 transitions. [2022-12-13 16:01:51,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 434 transitions, 1826 flow [2022-12-13 16:01:51,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 434 transitions, 1825 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:01:51,522 INFO L231 Difference]: Finished difference. Result has 94 places, 110 transitions, 375 flow [2022-12-13 16:01:51,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=94, PETRI_TRANSITIONS=110} [2022-12-13 16:01:51,524 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -12 predicate places. [2022-12-13 16:01:51,524 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 110 transitions, 375 flow [2022-12-13 16:01:51,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 918.1428571428571) internal successors, (6427), 7 states have internal predecessors, (6427), 0 states have call successors, (0), 0 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 16:01:51,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:01:51,527 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 16:01:51,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:01:51,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:01:51,729 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:01:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:01:51,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1853922514, now seen corresponding path program 2 times [2022-12-13 16:01:51,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:01:51,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766403051] [2022-12-13 16:01:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:01:51,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:01:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:01:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 16:01:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:01:51,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766403051] [2022-12-13 16:01:51,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766403051] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:01:51,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179433438] [2022-12-13 16:01:51,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:01:51,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:01:51,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:01:51,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:01:51,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:01:51,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:01:51,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:01:51,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:01:51,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:01:51,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:01:51,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:01:51,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179433438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:01:51,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:01:51,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 16:01:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489682404] [2022-12-13 16:01:51,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:01:51,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:01:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:01:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:01:51,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:01:51,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 920 out of 2242 [2022-12-13 16:01:51,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 110 transitions, 375 flow. Second operand has 3 states, 3 states have (on average 921.0) internal successors, (2763), 3 states have internal predecessors, (2763), 0 states have call successors, (0), 0 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 16:01:51,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:01:51,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 920 of 2242 [2022-12-13 16:01:51,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:02:29,997 INFO L130 PetriNetUnfolder]: 264106/361746 cut-off events. [2022-12-13 16:02:29,997 INFO L131 PetriNetUnfolder]: For 1370/1370 co-relation queries the response was YES. [2022-12-13 16:02:30,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729930 conditions, 361746 events. 264106/361746 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 9324. Compared 2608781 event pairs, 224385 based on Foata normal form. 3/143325 useless extension candidates. Maximal degree in co-relation 729918. Up to 361746 conditions per place. [2022-12-13 16:02:31,519 INFO L137 encePairwiseOnDemand]: 2238/2242 looper letters, 106 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2022-12-13 16:02:31,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 107 transitions, 559 flow [2022-12-13 16:02:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:02:31,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:02:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2850 transitions. [2022-12-13 16:02:31,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.423728813559322 [2022-12-13 16:02:31,526 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2850 transitions. [2022-12-13 16:02:31,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2850 transitions. [2022-12-13 16:02:31,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:02:31,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2850 transitions. [2022-12-13 16:02:31,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 950.0) internal successors, (2850), 3 states have internal predecessors, (2850), 0 states have call successors, (0), 0 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 16:02:31,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:02:31,542 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:02:31,542 INFO L175 Difference]: Start difference. First operand has 94 places, 110 transitions, 375 flow. Second operand 3 states and 2850 transitions. [2022-12-13 16:02:31,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 107 transitions, 559 flow [2022-12-13 16:02:31,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 487 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-12-13 16:02:31,546 INFO L231 Difference]: Finished difference. Result has 88 places, 107 transitions, 275 flow [2022-12-13 16:02:31,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=88, PETRI_TRANSITIONS=107} [2022-12-13 16:02:31,546 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -18 predicate places. [2022-12-13 16:02:31,547 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 107 transitions, 275 flow [2022-12-13 16:02:31,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 921.0) internal successors, (2763), 3 states have internal predecessors, (2763), 0 states have call successors, (0), 0 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 16:02:31,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:02:31,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 16:02:31,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:02:31,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:02:31,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:02:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:02:31,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1647752883, now seen corresponding path program 1 times [2022-12-13 16:02:31,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:02:31,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385956840] [2022-12-13 16:02:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:02:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:02:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:02:31,836 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 16:02:31,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:02:31,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385956840] [2022-12-13 16:02:31,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385956840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:02:31,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:02:31,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:02:31,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539274436] [2022-12-13 16:02:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:02:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:02:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:02:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:02:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:02:31,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 914 out of 2242 [2022-12-13 16:02:31,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 107 transitions, 275 flow. Second operand has 3 states, 3 states have (on average 916.0) internal successors, (2748), 3 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 16:02:31,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:02:31,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 914 of 2242 [2022-12-13 16:02:31,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:02,533 INFO L130 PetriNetUnfolder]: 211285/289400 cut-off events. [2022-12-13 16:03:02,533 INFO L131 PetriNetUnfolder]: For 1092/1092 co-relation queries the response was YES. [2022-12-13 16:03:02,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583922 conditions, 289400 events. 211285/289400 cut-off events. For 1092/1092 co-relation queries the response was YES. Maximal size of possible extension queue 7868. Compared 2045047 event pairs, 179508 based on Foata normal form. 1/114657 useless extension candidates. Maximal degree in co-relation 583913. Up to 289392 conditions per place. [2022-12-13 16:03:03,573 INFO L137 encePairwiseOnDemand]: 2235/2242 looper letters, 93 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2022-12-13 16:03:03,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 105 transitions, 477 flow [2022-12-13 16:03:03,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:03,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2835 transitions. [2022-12-13 16:03:03,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4214986619090098 [2022-12-13 16:03:03,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2835 transitions. [2022-12-13 16:03:03,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2835 transitions. [2022-12-13 16:03:03,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:03,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2835 transitions. [2022-12-13 16:03:03,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 945.0) internal successors, (2835), 3 states have internal predecessors, (2835), 0 states have call successors, (0), 0 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 16:03:03,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:03,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:03,592 INFO L175 Difference]: Start difference. First operand has 88 places, 107 transitions, 275 flow. Second operand 3 states and 2835 transitions. [2022-12-13 16:03:03,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 105 transitions, 477 flow [2022-12-13 16:03:03,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 105 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:03,594 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 304 flow [2022-12-13 16:03:03,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2022-12-13 16:03:03,594 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -16 predicate places. [2022-12-13 16:03:03,594 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 304 flow [2022-12-13 16:03:03,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 916.0) internal successors, (2748), 3 states have internal predecessors, (2748), 0 states have call successors, (0), 0 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 16:03:03,595 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:03,595 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:03,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 16:03:03,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1744096812, now seen corresponding path program 1 times [2022-12-13 16:03:03,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:03,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782190434] [2022-12-13 16:03:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:03,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:03:03,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:03,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782190434] [2022-12-13 16:03:03,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782190434] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:03,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499078609] [2022-12-13 16:03:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:03,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:03,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:03,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:03,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:03:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:03,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:03:03,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:03:03,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:03:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:03:03,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499078609] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:03:03,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:03:03,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-12-13 16:03:03,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449905478] [2022-12-13 16:03:03,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:03:03,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:03:03,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:03,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:03:03,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:03:03,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 908 out of 2242 [2022-12-13 16:03:03,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 909.875) internal successors, (7279), 8 states have internal predecessors, (7279), 0 states have call successors, (0), 0 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 16:03:03,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:03,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 908 of 2242 [2022-12-13 16:03:03,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:11,973 INFO L130 PetriNetUnfolder]: 52822/72362 cut-off events. [2022-12-13 16:03:11,973 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2022-12-13 16:03:12,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146032 conditions, 72362 events. 52822/72362 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 2127. Compared 435957 event pairs, 44877 based on Foata normal form. 9/28687 useless extension candidates. Maximal degree in co-relation 146021. Up to 72351 conditions per place. [2022-12-13 16:03:12,218 INFO L137 encePairwiseOnDemand]: 2235/2242 looper letters, 84 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2022-12-13 16:03:12,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 460 flow [2022-12-13 16:03:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:03:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:03:12,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5556 transitions. [2022-12-13 16:03:12,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4130240856378234 [2022-12-13 16:03:12,226 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5556 transitions. [2022-12-13 16:03:12,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5556 transitions. [2022-12-13 16:03:12,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:12,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5556 transitions. [2022-12-13 16:03:12,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 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 16:03:12,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 2242.0) internal successors, (15694), 7 states have internal predecessors, (15694), 0 states have call successors, (0), 0 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 16:03:12,246 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 2242.0) internal successors, (15694), 7 states have internal predecessors, (15694), 0 states have call successors, (0), 0 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 16:03:12,246 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 304 flow. Second operand 6 states and 5556 transitions. [2022-12-13 16:03:12,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 460 flow [2022-12-13 16:03:12,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:03:12,248 INFO L231 Difference]: Finished difference. Result has 96 places, 99 transitions, 304 flow [2022-12-13 16:03:12,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=96, PETRI_TRANSITIONS=99} [2022-12-13 16:03:12,248 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2022-12-13 16:03:12,248 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 99 transitions, 304 flow [2022-12-13 16:03:12,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 909.875) internal successors, (7279), 8 states have internal predecessors, (7279), 0 states have call successors, (0), 0 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 16:03:12,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:12,249 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:12,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:03:12,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:12,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1842096781, now seen corresponding path program 2 times [2022-12-13 16:03:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:12,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131516927] [2022-12-13 16:03:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:12,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:03:12,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:12,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131516927] [2022-12-13 16:03:12,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131516927] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:12,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955677259] [2022-12-13 16:03:12,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:03:12,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:12,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:12,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:12,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:03:12,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:03:12,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:03:12,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:03:12,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 16:03:12,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:03:12,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955677259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:12,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:03:12,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 16:03:12,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144074317] [2022-12-13 16:03:12,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:12,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:12,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:12,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:12,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:03:12,740 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:03:12,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 99 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:12,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:12,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:03:12,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:20,091 INFO L130 PetriNetUnfolder]: 47410/64918 cut-off events. [2022-12-13 16:03:20,091 INFO L131 PetriNetUnfolder]: For 263/263 co-relation queries the response was YES. [2022-12-13 16:03:20,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131115 conditions, 64918 events. 47410/64918 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 1917. Compared 384206 event pairs, 40037 based on Foata normal form. 0/26178 useless extension candidates. Maximal degree in co-relation 131101. Up to 64918 conditions per place. [2022-12-13 16:03:20,335 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 96 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2022-12-13 16:03:20,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 97 transitions, 494 flow [2022-12-13 16:03:20,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2859 transitions. [2022-12-13 16:03:20,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42506690454950935 [2022-12-13 16:03:20,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2859 transitions. [2022-12-13 16:03:20,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2859 transitions. [2022-12-13 16:03:20,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:20,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2859 transitions. [2022-12-13 16:03:20,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 953.0) internal successors, (2859), 3 states have internal predecessors, (2859), 0 states have call successors, (0), 0 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 16:03:20,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:20,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:20,374 INFO L175 Difference]: Start difference. First operand has 96 places, 99 transitions, 304 flow. Second operand 3 states and 2859 transitions. [2022-12-13 16:03:20,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 97 transitions, 494 flow [2022-12-13 16:03:20,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 97 transitions, 464 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 16:03:20,376 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 272 flow [2022-12-13 16:03:20,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2022-12-13 16:03:20,377 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -15 predicate places. [2022-12-13 16:03:20,377 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 272 flow [2022-12-13 16:03:20,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:20,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:20,377 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:20,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:03:20,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 16:03:20,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:20,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:20,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1842096706, now seen corresponding path program 1 times [2022-12-13 16:03:20,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:20,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183803918] [2022-12-13 16:03:20,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:20,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:03:20,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:20,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183803918] [2022-12-13 16:03:20,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183803918] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:03:20,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855657620] [2022-12-13 16:03:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:20,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:03:20,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:03:20,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:03:20,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:03:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:20,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:03:20,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:03:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:03:20,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:03:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 16:03:21,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855657620] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:03:21,002 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:03:21,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 16:03:21,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594022084] [2022-12-13 16:03:21,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:03:21,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 16:03:21,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:21,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 16:03:21,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:03:21,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 908 out of 2242 [2022-12-13 16:03:21,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 272 flow. Second operand has 17 states, 17 states have (on average 909.4117647058823) internal successors, (15460), 17 states have internal predecessors, (15460), 0 states have call successors, (0), 0 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 16:03:21,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:21,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 908 of 2242 [2022-12-13 16:03:21,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:28,697 INFO L130 PetriNetUnfolder]: 47410/64921 cut-off events. [2022-12-13 16:03:28,697 INFO L131 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2022-12-13 16:03:28,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131110 conditions, 64921 events. 47410/64921 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 1917. Compared 384206 event pairs, 40037 based on Foata normal form. 3/26184 useless extension candidates. Maximal degree in co-relation 131096. Up to 64907 conditions per place. [2022-12-13 16:03:28,964 INFO L137 encePairwiseOnDemand]: 2235/2242 looper letters, 82 selfloop transitions, 18 changer transitions 0/100 dead transitions. [2022-12-13 16:03:28,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 100 transitions, 484 flow [2022-12-13 16:03:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:03:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:03:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6459 transitions. [2022-12-13 16:03:28,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41155855741047537 [2022-12-13 16:03:28,973 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6459 transitions. [2022-12-13 16:03:28,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6459 transitions. [2022-12-13 16:03:28,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:28,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6459 transitions. [2022-12-13 16:03:28,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 922.7142857142857) internal successors, (6459), 7 states have internal predecessors, (6459), 0 states have call successors, (0), 0 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 16:03:28,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2242.0) internal successors, (17936), 8 states have internal predecessors, (17936), 0 states have call successors, (0), 0 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 16:03:28,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2242.0) internal successors, (17936), 8 states have internal predecessors, (17936), 0 states have call successors, (0), 0 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 16:03:28,994 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 272 flow. Second operand 7 states and 6459 transitions. [2022-12-13 16:03:28,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 100 transitions, 484 flow [2022-12-13 16:03:28,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 483 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:28,996 INFO L231 Difference]: Finished difference. Result has 97 places, 100 transitions, 333 flow [2022-12-13 16:03:28,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2022-12-13 16:03:28,996 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -9 predicate places. [2022-12-13 16:03:28,996 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 100 transitions, 333 flow [2022-12-13 16:03:28,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 909.4117647058823) internal successors, (15460), 17 states have internal predecessors, (15460), 0 states have call successors, (0), 0 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 16:03:28,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:28,998 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:29,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:03:29,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 16:03:29,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:29,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1819593633, now seen corresponding path program 2 times [2022-12-13 16:03:29,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:29,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264633045] [2022-12-13 16:03:29,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:29,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:03:29,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:29,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264633045] [2022-12-13 16:03:29,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264633045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:29,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:29,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:03:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855981281] [2022-12-13 16:03:29,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:29,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:29,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:29,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:29,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:29,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:03:29,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 100 transitions, 333 flow. Second operand has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:29,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:29,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:03:29,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:36,266 INFO L130 PetriNetUnfolder]: 43806/59945 cut-off events. [2022-12-13 16:03:36,266 INFO L131 PetriNetUnfolder]: For 259/259 co-relation queries the response was YES. [2022-12-13 16:03:36,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121087 conditions, 59945 events. 43806/59945 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 1788. Compared 350363 event pairs, 36825 based on Foata normal form. 0/24677 useless extension candidates. Maximal degree in co-relation 121071. Up to 59945 conditions per place. [2022-12-13 16:03:36,506 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 97 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2022-12-13 16:03:36,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 525 flow [2022-12-13 16:03:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2857 transitions. [2022-12-13 16:03:36,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4247695509961344 [2022-12-13 16:03:36,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2857 transitions. [2022-12-13 16:03:36,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2857 transitions. [2022-12-13 16:03:36,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:36,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2857 transitions. [2022-12-13 16:03:36,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 952.3333333333334) internal successors, (2857), 3 states have internal predecessors, (2857), 0 states have call successors, (0), 0 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 16:03:36,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:36,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:36,519 INFO L175 Difference]: Start difference. First operand has 97 places, 100 transitions, 333 flow. Second operand 3 states and 2857 transitions. [2022-12-13 16:03:36,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 525 flow [2022-12-13 16:03:36,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 495 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 16:03:36,522 INFO L231 Difference]: Finished difference. Result has 93 places, 98 transitions, 301 flow [2022-12-13 16:03:36,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=301, PETRI_PLACES=93, PETRI_TRANSITIONS=98} [2022-12-13 16:03:36,522 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -13 predicate places. [2022-12-13 16:03:36,522 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 98 transitions, 301 flow [2022-12-13 16:03:36,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:36,523 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:36,523 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:36,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 16:03:36,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:36,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:36,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1819593710, now seen corresponding path program 1 times [2022-12-13 16:03:36,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:36,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876605857] [2022-12-13 16:03:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:03:36,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:36,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876605857] [2022-12-13 16:03:36,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876605857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:36,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:36,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:03:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295831084] [2022-12-13 16:03:36,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:36,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:36,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:03:36,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 98 transitions, 301 flow. Second operand has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:36,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:36,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:03:36,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:42,978 INFO L130 PetriNetUnfolder]: 40344/55167 cut-off events. [2022-12-13 16:03:42,978 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2022-12-13 16:03:43,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111425 conditions, 55167 events. 40344/55167 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 1680. Compared 317592 event pairs, 33747 based on Foata normal form. 0/23211 useless extension candidates. Maximal degree in co-relation 111408. Up to 55167 conditions per place. [2022-12-13 16:03:43,267 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 95 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2022-12-13 16:03:43,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 96 transitions, 489 flow [2022-12-13 16:03:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:43,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2855 transitions. [2022-12-13 16:03:43,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42447219744275944 [2022-12-13 16:03:43,272 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2855 transitions. [2022-12-13 16:03:43,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2855 transitions. [2022-12-13 16:03:43,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:43,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2855 transitions. [2022-12-13 16:03:43,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 951.6666666666666) internal successors, (2855), 3 states have internal predecessors, (2855), 0 states have call successors, (0), 0 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 16:03:43,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:43,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:43,281 INFO L175 Difference]: Start difference. First operand has 93 places, 98 transitions, 301 flow. Second operand 3 states and 2855 transitions. [2022-12-13 16:03:43,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 96 transitions, 489 flow [2022-12-13 16:03:43,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:43,283 INFO L231 Difference]: Finished difference. Result has 92 places, 96 transitions, 298 flow [2022-12-13 16:03:43,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=298, PETRI_PLACES=92, PETRI_TRANSITIONS=96} [2022-12-13 16:03:43,283 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -14 predicate places. [2022-12-13 16:03:43,283 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 96 transitions, 298 flow [2022-12-13 16:03:43,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:43,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:43,284 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:43,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 16:03:43,284 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:43,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1819593709, now seen corresponding path program 1 times [2022-12-13 16:03:43,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:43,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121606907] [2022-12-13 16:03:43,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:03:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:43,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121606907] [2022-12-13 16:03:43,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121606907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:43,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:43,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:03:43,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064170277] [2022-12-13 16:03:43,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:43,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:43,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:03:43,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 96 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:43,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:43,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:03:43,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:49,317 INFO L130 PetriNetUnfolder]: 35834/48973 cut-off events. [2022-12-13 16:03:49,318 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-12-13 16:03:49,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98989 conditions, 48973 events. 35834/48973 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 1460. Compared 277202 event pairs, 29757 based on Foata normal form. 0/21021 useless extension candidates. Maximal degree in co-relation 98971. Up to 48973 conditions per place. [2022-12-13 16:03:49,529 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 93 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2022-12-13 16:03:49,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 482 flow [2022-12-13 16:03:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:49,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2853 transitions. [2022-12-13 16:03:49,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4241748438893845 [2022-12-13 16:03:49,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2853 transitions. [2022-12-13 16:03:49,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2853 transitions. [2022-12-13 16:03:49,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:49,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2853 transitions. [2022-12-13 16:03:49,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 951.0) internal successors, (2853), 3 states have internal predecessors, (2853), 0 states have call successors, (0), 0 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 16:03:49,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:49,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:49,540 INFO L175 Difference]: Start difference. First operand has 92 places, 96 transitions, 298 flow. Second operand 3 states and 2853 transitions. [2022-12-13 16:03:49,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 482 flow [2022-12-13 16:03:49,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:49,542 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 295 flow [2022-12-13 16:03:49,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=295, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2022-12-13 16:03:49,542 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -15 predicate places. [2022-12-13 16:03:49,542 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 295 flow [2022-12-13 16:03:49,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 927.0) internal successors, (2781), 3 states have internal predecessors, (2781), 0 states have call successors, (0), 0 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 16:03:49,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:49,543 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:49,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 16:03:49,543 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:49,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:49,543 INFO L85 PathProgramCache]: Analyzing trace with hash 572828361, now seen corresponding path program 1 times [2022-12-13 16:03:49,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:49,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572098231] [2022-12-13 16:03:49,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:49,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:03:49,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:49,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572098231] [2022-12-13 16:03:49,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572098231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:49,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:49,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:03:49,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499835415] [2022-12-13 16:03:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:49,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:49,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:49,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:49,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:49,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:03:49,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 921.3333333333334) internal successors, (2764), 3 states have internal predecessors, (2764), 0 states have call successors, (0), 0 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 16:03:49,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:49,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:03:49,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:03:58,326 INFO L130 PetriNetUnfolder]: 52734/72107 cut-off events. [2022-12-13 16:03:58,326 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-12-13 16:03:58,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145699 conditions, 72107 events. 52734/72107 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 424403 event pairs, 29757 based on Foata normal form. 0/33473 useless extension candidates. Maximal degree in co-relation 145680. Up to 48974 conditions per place. [2022-12-13 16:03:58,684 INFO L137 encePairwiseOnDemand]: 2230/2242 looper letters, 151 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2022-12-13 16:03:58,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 153 transitions, 724 flow [2022-12-13 16:03:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:03:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:03:58,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2902 transitions. [2022-12-13 16:03:58,689 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43146000594707107 [2022-12-13 16:03:58,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2902 transitions. [2022-12-13 16:03:58,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2902 transitions. [2022-12-13 16:03:58,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:03:58,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2902 transitions. [2022-12-13 16:03:58,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 967.3333333333334) internal successors, (2902), 3 states have internal predecessors, (2902), 0 states have call successors, (0), 0 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 16:03:58,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:58,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:03:58,699 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 295 flow. Second operand 3 states and 2902 transitions. [2022-12-13 16:03:58,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 153 transitions, 724 flow [2022-12-13 16:03:58,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 153 transitions, 723 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:03:58,701 INFO L231 Difference]: Finished difference. Result has 93 places, 95 transitions, 324 flow [2022-12-13 16:03:58,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=324, PETRI_PLACES=93, PETRI_TRANSITIONS=95} [2022-12-13 16:03:58,701 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -13 predicate places. [2022-12-13 16:03:58,702 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 95 transitions, 324 flow [2022-12-13 16:03:58,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 921.3333333333334) internal successors, (2764), 3 states have internal predecessors, (2764), 0 states have call successors, (0), 0 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 16:03:58,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:03:58,702 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:03:58,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 16:03:58,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:03:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:03:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 577602686, now seen corresponding path program 1 times [2022-12-13 16:03:58,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:03:58,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338607182] [2022-12-13 16:03:58,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:03:58,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:03:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:03:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:03:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:58,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338607182] [2022-12-13 16:03:58,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338607182] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:03:58,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:03:58,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:03:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662716388] [2022-12-13 16:03:58,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:03:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:03:58,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:58,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:03:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:03:58,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:03:58,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 927.6666666666666) internal successors, (2783), 3 states have internal predecessors, (2783), 0 states have call successors, (0), 0 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 16:03:58,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:03:58,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:03:58,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:06,764 INFO L130 PetriNetUnfolder]: 46795/63936 cut-off events. [2022-12-13 16:04:06,764 INFO L131 PetriNetUnfolder]: For 3006/3006 co-relation queries the response was YES. [2022-12-13 16:04:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137056 conditions, 63936 events. 46795/63936 cut-off events. For 3006/3006 co-relation queries the response was YES. Maximal size of possible extension queue 1274. Compared 364083 event pairs, 38756 based on Foata normal form. 0/32442 useless extension candidates. Maximal degree in co-relation 137036. Up to 63936 conditions per place. [2022-12-13 16:04:07,087 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 92 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 16:04:07,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 93 transitions, 506 flow [2022-12-13 16:04:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2851 transitions. [2022-12-13 16:04:07,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4238774903360095 [2022-12-13 16:04:07,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2851 transitions. [2022-12-13 16:04:07,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2851 transitions. [2022-12-13 16:04:07,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:07,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2851 transitions. [2022-12-13 16:04:07,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 950.3333333333334) internal successors, (2851), 3 states have internal predecessors, (2851), 0 states have call successors, (0), 0 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 16:04:07,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:07,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:07,099 INFO L175 Difference]: Start difference. First operand has 93 places, 95 transitions, 324 flow. Second operand 3 states and 2851 transitions. [2022-12-13 16:04:07,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 93 transitions, 506 flow [2022-12-13 16:04:07,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:07,111 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 320 flow [2022-12-13 16:04:07,111 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2022-12-13 16:04:07,112 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -14 predicate places. [2022-12-13 16:04:07,112 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 320 flow [2022-12-13 16:04:07,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 927.6666666666666) internal successors, (2783), 3 states have internal predecessors, (2783), 0 states have call successors, (0), 0 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 16:04:07,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:07,112 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:07,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 16:04:07,112 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:04:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash 577602747, now seen corresponding path program 1 times [2022-12-13 16:04:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:07,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162024129] [2022-12-13 16:04:07,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:07,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:07,168 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:04:07,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:07,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162024129] [2022-12-13 16:04:07,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162024129] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:07,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:07,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:04:07,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636080474] [2022-12-13 16:04:07,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:07,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:07,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:07,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:07,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:07,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:04:07,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 927.6666666666666) internal successors, (2783), 3 states have internal predecessors, (2783), 0 states have call successors, (0), 0 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 16:04:07,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:07,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:04:07,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:14,446 INFO L130 PetriNetUnfolder]: 41174/56207 cut-off events. [2022-12-13 16:04:14,446 INFO L131 PetriNetUnfolder]: For 2001/2001 co-relation queries the response was YES. [2022-12-13 16:04:14,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120103 conditions, 56207 events. 41174/56207 cut-off events. For 2001/2001 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 314372 event pairs, 33779 based on Foata normal form. 0/29057 useless extension candidates. Maximal degree in co-relation 120082. Up to 56207 conditions per place. [2022-12-13 16:04:14,720 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2022-12-13 16:04:14,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 91 transitions, 498 flow [2022-12-13 16:04:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:14,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2849 transitions. [2022-12-13 16:04:14,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42358013678263456 [2022-12-13 16:04:14,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2849 transitions. [2022-12-13 16:04:14,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2849 transitions. [2022-12-13 16:04:14,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:14,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2849 transitions. [2022-12-13 16:04:14,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 949.6666666666666) internal successors, (2849), 3 states have internal predecessors, (2849), 0 states have call successors, (0), 0 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 16:04:14,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:14,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:14,732 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 320 flow. Second operand 3 states and 2849 transitions. [2022-12-13 16:04:14,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 91 transitions, 498 flow [2022-12-13 16:04:14,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:14,736 INFO L231 Difference]: Finished difference. Result has 91 places, 91 transitions, 317 flow [2022-12-13 16:04:14,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=91, PETRI_TRANSITIONS=91} [2022-12-13 16:04:14,737 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -15 predicate places. [2022-12-13 16:04:14,737 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 91 transitions, 317 flow [2022-12-13 16:04:14,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 927.6666666666666) internal successors, (2783), 3 states have internal predecessors, (2783), 0 states have call successors, (0), 0 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 16:04:14,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:14,737 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 16:04:14,738 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:04:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash 725813787, now seen corresponding path program 1 times [2022-12-13 16:04:14,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:14,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418199246] [2022-12-13 16:04:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:14,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:04:14,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:14,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418199246] [2022-12-13 16:04:14,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418199246] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:14,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:14,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:04:14,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668440761] [2022-12-13 16:04:14,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:14,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:14,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:14,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:04:14,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 91 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 922.0) internal successors, (2766), 3 states have internal predecessors, (2766), 0 states have call successors, (0), 0 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 16:04:14,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:14,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:04:14,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:25,941 INFO L130 PetriNetUnfolder]: 62088/84619 cut-off events. [2022-12-13 16:04:25,941 INFO L131 PetriNetUnfolder]: For 4677/4677 co-relation queries the response was YES. [2022-12-13 16:04:26,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180712 conditions, 84619 events. 62088/84619 cut-off events. For 4677/4677 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 487310 event pairs, 33779 based on Foata normal form. 0/46599 useless extension candidates. Maximal degree in co-relation 180690. Up to 56208 conditions per place. [2022-12-13 16:04:26,361 INFO L137 encePairwiseOnDemand]: 2230/2242 looper letters, 143 selfloop transitions, 2 changer transitions 0/145 dead transitions. [2022-12-13 16:04:26,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 145 transitions, 745 flow [2022-12-13 16:04:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2892 transitions. [2022-12-13 16:04:26,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4299732381801962 [2022-12-13 16:04:26,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2892 transitions. [2022-12-13 16:04:26,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2892 transitions. [2022-12-13 16:04:26,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:26,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2892 transitions. [2022-12-13 16:04:26,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 964.0) internal successors, (2892), 3 states have internal predecessors, (2892), 0 states have call successors, (0), 0 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 16:04:26,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:26,374 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:26,374 INFO L175 Difference]: Start difference. First operand has 91 places, 91 transitions, 317 flow. Second operand 3 states and 2892 transitions. [2022-12-13 16:04:26,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 145 transitions, 745 flow [2022-12-13 16:04:26,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 145 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:26,376 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 346 flow [2022-12-13 16:04:26,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2022-12-13 16:04:26,377 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -13 predicate places. [2022-12-13 16:04:26,377 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 346 flow [2022-12-13 16:04:26,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 922.0) internal successors, (2766), 3 states have internal predecessors, (2766), 0 states have call successors, (0), 0 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 16:04:26,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:26,377 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:26,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 16:04:26,378 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:04:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1717928517, now seen corresponding path program 1 times [2022-12-13 16:04:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:26,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137331285] [2022-12-13 16:04:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:04:26,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:26,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137331285] [2022-12-13 16:04:26,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137331285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:26,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:26,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:04:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925858371] [2022-12-13 16:04:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:26,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:26,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:26,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:26,458 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:04:26,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 922.6666666666666) internal successors, (2768), 3 states have internal predecessors, (2768), 0 states have call successors, (0), 0 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 16:04:26,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:26,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:04:26,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:40,648 INFO L130 PetriNetUnfolder]: 73218/99857 cut-off events. [2022-12-13 16:04:40,648 INFO L131 PetriNetUnfolder]: For 8741/8741 co-relation queries the response was YES. [2022-12-13 16:04:40,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224133 conditions, 99857 events. 73218/99857 cut-off events. For 8741/8741 co-relation queries the response was YES. Maximal size of possible extension queue 1563. Compared 592209 event pairs, 50997 based on Foata normal form. 0/59431 useless extension candidates. Maximal degree in co-relation 224110. Up to 84620 conditions per place. [2022-12-13 16:04:41,223 INFO L137 encePairwiseOnDemand]: 2233/2242 looper letters, 146 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2022-12-13 16:04:41,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 148 transitions, 810 flow [2022-12-13 16:04:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:04:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:04:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2890 transitions. [2022-12-13 16:04:41,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42967588462682127 [2022-12-13 16:04:41,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2890 transitions. [2022-12-13 16:04:41,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2890 transitions. [2022-12-13 16:04:41,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:41,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2890 transitions. [2022-12-13 16:04:41,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 963.3333333333334) internal successors, (2890), 3 states have internal predecessors, (2890), 0 states have call successors, (0), 0 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 16:04:41,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:41,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:04:41,237 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 346 flow. Second operand 3 states and 2890 transitions. [2022-12-13 16:04:41,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 148 transitions, 810 flow [2022-12-13 16:04:41,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 148 transitions, 806 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:41,243 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 368 flow [2022-12-13 16:04:41,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2022-12-13 16:04:41,243 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -11 predicate places. [2022-12-13 16:04:41,243 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 368 flow [2022-12-13 16:04:41,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 922.6666666666666) internal successors, (2768), 3 states have internal predecessors, (2768), 0 states have call successors, (0), 0 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 16:04:41,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:41,244 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 16:04:41,244 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:04:41,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1716180782, now seen corresponding path program 1 times [2022-12-13 16:04:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:41,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621248873] [2022-12-13 16:04:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:04:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621248873] [2022-12-13 16:04:41,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621248873] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:04:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485888152] [2022-12-13 16:04:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:41,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:41,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:04:41,332 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:04:41,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:04:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:41,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:04:41,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:04:41,518 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:04:41,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:04:41,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485888152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:41,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:04:41,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 16:04:41,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572037062] [2022-12-13 16:04:41,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:41,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:04:41,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:41,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:04:41,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:04:41,546 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:04:41,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 921.75) internal successors, (3687), 4 states have internal predecessors, (3687), 0 states have call successors, (0), 0 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 16:04:41,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:41,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:04:41,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:04:53,457 INFO L130 PetriNetUnfolder]: 60034/82565 cut-off events. [2022-12-13 16:04:53,457 INFO L131 PetriNetUnfolder]: For 14184/14184 co-relation queries the response was YES. [2022-12-13 16:04:53,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201852 conditions, 82565 events. 60034/82565 cut-off events. For 14184/14184 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 500868 event pairs, 11565 based on Foata normal form. 0/57527 useless extension candidates. Maximal degree in co-relation 201828. Up to 47768 conditions per place. [2022-12-13 16:04:53,890 INFO L137 encePairwiseOnDemand]: 2237/2242 looper letters, 197 selfloop transitions, 2 changer transitions 0/199 dead transitions. [2022-12-13 16:04:53,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 199 transitions, 1080 flow [2022-12-13 16:04:53,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:04:53,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:04:53,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3853 transitions. [2022-12-13 16:04:53,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4296387154326494 [2022-12-13 16:04:53,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3853 transitions. [2022-12-13 16:04:53,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3853 transitions. [2022-12-13 16:04:53,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:04:53,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3853 transitions. [2022-12-13 16:04:53,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 963.25) internal successors, (3853), 4 states have internal predecessors, (3853), 0 states have call successors, (0), 0 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 16:04:53,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2242.0) internal successors, (11210), 5 states have internal predecessors, (11210), 0 states have call successors, (0), 0 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 16:04:53,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2242.0) internal successors, (11210), 5 states have internal predecessors, (11210), 0 states have call successors, (0), 0 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 16:04:53,905 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 368 flow. Second operand 4 states and 3853 transitions. [2022-12-13 16:04:53,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 199 transitions, 1080 flow [2022-12-13 16:04:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 199 transitions, 1078 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:04:53,948 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 358 flow [2022-12-13 16:04:53,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=358, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2022-12-13 16:04:53,948 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -12 predicate places. [2022-12-13 16:04:53,949 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 358 flow [2022-12-13 16:04:53,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 921.75) internal successors, (3687), 4 states have internal predecessors, (3687), 0 states have call successors, (0), 0 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 16:04:53,949 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:04:53,949 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:04:53,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 16:04:54,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:04:54,151 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:04:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:04:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1716180716, now seen corresponding path program 1 times [2022-12-13 16:04:54,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:04:54,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302978740] [2022-12-13 16:04:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:04:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:04:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:04:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 16:04:54,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:04:54,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302978740] [2022-12-13 16:04:54,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302978740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:04:54,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:04:54,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:04:54,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662490498] [2022-12-13 16:04:54,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:04:54,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:04:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:04:54,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:04:54,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:04:54,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:04:54,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:04:54,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:04:54,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:04:54,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:05:04,964 INFO L130 PetriNetUnfolder]: 52916/72777 cut-off events. [2022-12-13 16:05:04,964 INFO L131 PetriNetUnfolder]: For 18160/18160 co-relation queries the response was YES. [2022-12-13 16:05:05,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179182 conditions, 72777 events. 52916/72777 cut-off events. For 18160/18160 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 416119 event pairs, 44657 based on Foata normal form. 0/52347 useless extension candidates. Maximal degree in co-relation 179158. Up to 72777 conditions per place. [2022-12-13 16:05:05,347 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 87 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2022-12-13 16:05:05,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 526 flow [2022-12-13 16:05:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:05:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:05:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2844 transitions. [2022-12-13 16:05:05,352 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42283675289919714 [2022-12-13 16:05:05,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2844 transitions. [2022-12-13 16:05:05,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2844 transitions. [2022-12-13 16:05:05,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:05:05,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2844 transitions. [2022-12-13 16:05:05,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 948.0) internal successors, (2844), 3 states have internal predecessors, (2844), 0 states have call successors, (0), 0 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 16:05:05,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:05:05,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:05:05,360 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 358 flow. Second operand 3 states and 2844 transitions. [2022-12-13 16:05:05,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 526 flow [2022-12-13 16:05:05,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:05:05,403 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 349 flow [2022-12-13 16:05:05,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2022-12-13 16:05:05,403 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -14 predicate places. [2022-12-13 16:05:05,403 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 349 flow [2022-12-13 16:05:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:05:05,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:05:05,404 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:05,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 16:05:05,404 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:05:05,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:05,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1716180832, now seen corresponding path program 1 times [2022-12-13 16:05:05,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:05,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117465224] [2022-12-13 16:05:05,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:05,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:05,520 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:05:05,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:05,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117465224] [2022-12-13 16:05:05,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117465224] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:05:05,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259112491] [2022-12-13 16:05:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:05,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:05:05,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:05:05,522 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:05:05,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:05:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:05,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:05:05,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:05:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:05:05,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:05:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:05:05,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259112491] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:05:05,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:05:05,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:05:05,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495624694] [2022-12-13 16:05:05,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:05:05,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:05:05,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:05:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:05:05,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:05:05,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 920.8571428571429) internal successors, (6446), 7 states have internal predecessors, (6446), 0 states have call successors, (0), 0 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 16:05:05,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:05:05,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:05:05,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:05:25,392 INFO L130 PetriNetUnfolder]: 85352/117165 cut-off events. [2022-12-13 16:05:25,392 INFO L131 PetriNetUnfolder]: For 14764/14764 co-relation queries the response was YES. [2022-12-13 16:05:25,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281399 conditions, 117165 events. 85352/117165 cut-off events. For 14764/14764 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 728741 event pairs, 35101 based on Foata normal form. 0/88047 useless extension candidates. Maximal degree in co-relation 281374. Up to 57982 conditions per place. [2022-12-13 16:05:26,044 INFO L137 encePairwiseOnDemand]: 2237/2242 looper letters, 302 selfloop transitions, 5 changer transitions 0/307 dead transitions. [2022-12-13 16:05:26,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 307 transitions, 1615 flow [2022-12-13 16:05:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:05:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:05:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5799 transitions. [2022-12-13 16:05:26,051 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43108831400535236 [2022-12-13 16:05:26,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5799 transitions. [2022-12-13 16:05:26,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5799 transitions. [2022-12-13 16:05:26,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:05:26,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5799 transitions. [2022-12-13 16:05:26,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 966.5) internal successors, (5799), 6 states have internal predecessors, (5799), 0 states have call successors, (0), 0 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 16:05:26,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 2242.0) internal successors, (15694), 7 states have internal predecessors, (15694), 0 states have call successors, (0), 0 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 16:05:26,066 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 2242.0) internal successors, (15694), 7 states have internal predecessors, (15694), 0 states have call successors, (0), 0 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 16:05:26,066 INFO L175 Difference]: Start difference. First operand has 92 places, 88 transitions, 349 flow. Second operand 6 states and 5799 transitions. [2022-12-13 16:05:26,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 307 transitions, 1615 flow [2022-12-13 16:05:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 307 transitions, 1614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:05:26,091 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 396 flow [2022-12-13 16:05:26,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=396, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2022-12-13 16:05:26,091 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -7 predicate places. [2022-12-13 16:05:26,091 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 396 flow [2022-12-13 16:05:26,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 920.8571428571429) internal successors, (6446), 7 states have internal predecessors, (6446), 0 states have call successors, (0), 0 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 16:05:26,092 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:05:26,092 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:26,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 16:05:26,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:05:26,294 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:05:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2137676516, now seen corresponding path program 1 times [2022-12-13 16:05:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:26,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713341197] [2022-12-13 16:05:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:26,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 16:05:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:26,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713341197] [2022-12-13 16:05:26,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713341197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:26,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:05:26,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 16:05:26,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633962460] [2022-12-13 16:05:26,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:26,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:26,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:26,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:26,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 16:05:26,403 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:05:26,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 929.6666666666666) internal successors, (2789), 3 states have internal predecessors, (2789), 0 states have call successors, (0), 0 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 16:05:26,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:05:26,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:05:26,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:05:45,055 INFO L130 PetriNetUnfolder]: 80234/110065 cut-off events. [2022-12-13 16:05:45,055 INFO L131 PetriNetUnfolder]: For 66150/66150 co-relation queries the response was YES. [2022-12-13 16:05:45,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296715 conditions, 110065 events. 80234/110065 cut-off events. For 66150/66150 co-relation queries the response was YES. Maximal size of possible extension queue 1623. Compared 659949 event pairs, 68651 based on Foata normal form. 0/85873 useless extension candidates. Maximal degree in co-relation 296687. Up to 110065 conditions per place. [2022-12-13 16:05:45,758 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2022-12-13 16:05:45,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 89 transitions, 566 flow [2022-12-13 16:05:45,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:05:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:05:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2842 transitions. [2022-12-13 16:05:45,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4225393993458222 [2022-12-13 16:05:45,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2842 transitions. [2022-12-13 16:05:45,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2842 transitions. [2022-12-13 16:05:45,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:05:45,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2842 transitions. [2022-12-13 16:05:45,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 947.3333333333334) internal successors, (2842), 3 states have internal predecessors, (2842), 0 states have call successors, (0), 0 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 16:05:45,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:05:45,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:05:45,772 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 396 flow. Second operand 3 states and 2842 transitions. [2022-12-13 16:05:45,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 89 transitions, 566 flow [2022-12-13 16:05:45,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 89 transitions, 558 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 16:05:45,997 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 382 flow [2022-12-13 16:05:45,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2022-12-13 16:05:45,998 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2022-12-13 16:05:45,998 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 382 flow [2022-12-13 16:05:45,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 929.6666666666666) internal successors, (2789), 3 states have internal predecessors, (2789), 0 states have call successors, (0), 0 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 16:05:45,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:05:45,998 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:05:45,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 16:05:45,998 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:05:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:05:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2137676600, now seen corresponding path program 1 times [2022-12-13 16:05:45,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:05:45,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779170862] [2022-12-13 16:05:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:05:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:05:46,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:05:46,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779170862] [2022-12-13 16:05:46,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779170862] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:05:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382879938] [2022-12-13 16:05:46,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:05:46,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:05:46,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:05:46,096 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:05:46,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:05:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:05:46,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:05:46,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:05:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 16:05:46,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:05:46,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382879938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:05:46,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:05:46,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 16:05:46,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167567688] [2022-12-13 16:05:46,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:05:46,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:05:46,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:05:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:05:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:05:46,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:05:46,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 929.6666666666666) internal successors, (2789), 3 states have internal predecessors, (2789), 0 states have call successors, (0), 0 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 16:05:46,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:05:46,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:05:46,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:06:03,530 INFO L130 PetriNetUnfolder]: 75274/103187 cut-off events. [2022-12-13 16:06:03,531 INFO L131 PetriNetUnfolder]: For 45906/45906 co-relation queries the response was YES. [2022-12-13 16:06:03,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269870 conditions, 103187 events. 75274/103187 cut-off events. For 45906/45906 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 611314 event pairs, 64131 based on Foata normal form. 0/81793 useless extension candidates. Maximal degree in co-relation 269840. Up to 103187 conditions per place. [2022-12-13 16:06:04,247 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 86 selfloop transitions, 1 changer transitions 0/87 dead transitions. [2022-12-13 16:06:04,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 548 flow [2022-12-13 16:06:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:06:04,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:06:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2840 transitions. [2022-12-13 16:06:04,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42224204579244723 [2022-12-13 16:06:04,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2840 transitions. [2022-12-13 16:06:04,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2840 transitions. [2022-12-13 16:06:04,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:06:04,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2840 transitions. [2022-12-13 16:06:04,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 946.6666666666666) internal successors, (2840), 3 states have internal predecessors, (2840), 0 states have call successors, (0), 0 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 16:06:04,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:06:04,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:06:04,259 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 382 flow. Second operand 3 states and 2840 transitions. [2022-12-13 16:06:04,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 548 flow [2022-12-13 16:06:04,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 87 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:06:04,456 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 375 flow [2022-12-13 16:06:04,456 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2022-12-13 16:06:04,456 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -9 predicate places. [2022-12-13 16:06:04,456 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 375 flow [2022-12-13 16:06:04,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 929.6666666666666) internal successors, (2789), 3 states have internal predecessors, (2789), 0 states have call successors, (0), 0 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 16:06:04,456 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:06:04,457 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:06:04,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 16:06:04,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 16:06:04,658 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:06:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:06:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2137676603, now seen corresponding path program 1 times [2022-12-13 16:06:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:06:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321900595] [2022-12-13 16:06:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:04,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:06:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:04,755 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:06:04,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:06:04,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321900595] [2022-12-13 16:06:04,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321900595] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:06:04,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841753737] [2022-12-13 16:06:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:04,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:06:04,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:06:04,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:06:04,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 16:06:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:04,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:06:04,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:06:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:06:04,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:06:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:06:04,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841753737] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:06:04,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:06:04,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:06:04,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584053115] [2022-12-13 16:06:04,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:06:04,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:06:04,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:06:04,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:06:04,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:06:05,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:06:05,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 375 flow. Second operand has 7 states, 7 states have (on average 922.8571428571429) internal successors, (6460), 7 states have internal predecessors, (6460), 0 states have call successors, (0), 0 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 16:06:05,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:06:05,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:06:05,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:06:35,641 INFO L130 PetriNetUnfolder]: 132044/179191 cut-off events. [2022-12-13 16:06:35,641 INFO L131 PetriNetUnfolder]: For 86570/86570 co-relation queries the response was YES. [2022-12-13 16:06:36,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463154 conditions, 179191 events. 132044/179191 cut-off events. For 86570/86570 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 1077315 event pairs, 12205 based on Foata normal form. 2886/148071 useless extension candidates. Maximal degree in co-relation 463123. Up to 36340 conditions per place. [2022-12-13 16:06:36,800 INFO L137 encePairwiseOnDemand]: 2231/2242 looper letters, 317 selfloop transitions, 15 changer transitions 0/332 dead transitions. [2022-12-13 16:06:36,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 332 transitions, 1897 flow [2022-12-13 16:06:36,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:06:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:06:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6728 transitions. [2022-12-13 16:06:36,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4286988658085893 [2022-12-13 16:06:36,807 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6728 transitions. [2022-12-13 16:06:36,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6728 transitions. [2022-12-13 16:06:36,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:06:36,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6728 transitions. [2022-12-13 16:06:36,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 961.1428571428571) internal successors, (6728), 7 states have internal predecessors, (6728), 0 states have call successors, (0), 0 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 16:06:36,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2242.0) internal successors, (17936), 8 states have internal predecessors, (17936), 0 states have call successors, (0), 0 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 16:06:36,828 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2242.0) internal successors, (17936), 8 states have internal predecessors, (17936), 0 states have call successors, (0), 0 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 16:06:36,828 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 375 flow. Second operand 7 states and 6728 transitions. [2022-12-13 16:06:36,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 332 transitions, 1897 flow [2022-12-13 16:06:36,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 332 transitions, 1896 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:06:36,988 INFO L231 Difference]: Finished difference. Result has 103 places, 93 transitions, 459 flow [2022-12-13 16:06:36,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=459, PETRI_PLACES=103, PETRI_TRANSITIONS=93} [2022-12-13 16:06:36,988 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -3 predicate places. [2022-12-13 16:06:36,988 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 93 transitions, 459 flow [2022-12-13 16:06:36,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 922.8571428571429) internal successors, (6460), 7 states have internal predecessors, (6460), 0 states have call successors, (0), 0 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 16:06:36,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:06:36,989 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:06:36,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 16:06:37,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:06:37,190 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:06:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:06:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash -542921924, now seen corresponding path program 2 times [2022-12-13 16:06:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:06:37,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737941303] [2022-12-13 16:06:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:06:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:06:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:06:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:06:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:06:37,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737941303] [2022-12-13 16:06:37,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737941303] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:06:37,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969188806] [2022-12-13 16:06:37,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:06:37,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:06:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:06:37,463 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:06:37,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 16:06:37,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:06:37,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:06:37,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:06:37,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:06:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 16:06:37,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:06:37,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969188806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:06:37,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:06:37,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 16:06:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357078300] [2022-12-13 16:06:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:06:37,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:06:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:06:37,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:06:37,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:06:37,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:06:37,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 93 transitions, 459 flow. Second operand has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:06:37,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:06:37,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:06:37,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:07:08,674 INFO L130 PetriNetUnfolder]: 121302/164587 cut-off events. [2022-12-13 16:07:08,674 INFO L131 PetriNetUnfolder]: For 109017/109017 co-relation queries the response was YES. [2022-12-13 16:07:09,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450178 conditions, 164587 events. 121302/164587 cut-off events. For 109017/109017 co-relation queries the response was YES. Maximal size of possible extension queue 1594. Compared 993430 event pairs, 98995 based on Foata normal form. 0/143779 useless extension candidates. Maximal degree in co-relation 450144. Up to 164587 conditions per place. [2022-12-13 16:07:10,038 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 90 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2022-12-13 16:07:10,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 91 transitions, 621 flow [2022-12-13 16:07:10,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:07:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:07:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2835 transitions. [2022-12-13 16:07:10,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4214986619090098 [2022-12-13 16:07:10,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2835 transitions. [2022-12-13 16:07:10,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2835 transitions. [2022-12-13 16:07:10,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:07:10,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2835 transitions. [2022-12-13 16:07:10,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 945.0) internal successors, (2835), 3 states have internal predecessors, (2835), 0 states have call successors, (0), 0 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 16:07:10,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:07:10,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:07:10,049 INFO L175 Difference]: Start difference. First operand has 103 places, 93 transitions, 459 flow. Second operand 3 states and 2835 transitions. [2022-12-13 16:07:10,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 91 transitions, 621 flow [2022-12-13 16:07:10,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 91 transitions, 595 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 16:07:10,525 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 415 flow [2022-12-13 16:07:10,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=415, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2022-12-13 16:07:10,526 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2022-12-13 16:07:10,526 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 415 flow [2022-12-13 16:07:10,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:07:10,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:07:10,526 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:10,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 16:07:10,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 16:07:10,728 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:07:10,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash -542921925, now seen corresponding path program 1 times [2022-12-13 16:07:10,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:10,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615428810] [2022-12-13 16:07:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:10,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:07:10,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:10,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615428810] [2022-12-13 16:07:10,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615428810] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:07:10,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282918681] [2022-12-13 16:07:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:10,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:07:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:07:10,922 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:07:10,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 16:07:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:11,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:07:11,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:07:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 16:07:11,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:07:11,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282918681] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:11,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:07:11,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 16:07:11,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800665657] [2022-12-13 16:07:11,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:11,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:07:11,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:11,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:07:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:07:11,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:07:11,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:07:11,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:07:11,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:07:11,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:07:39,892 INFO L130 PetriNetUnfolder]: 110880/150423 cut-off events. [2022-12-13 16:07:39,892 INFO L131 PetriNetUnfolder]: For 87875/87875 co-relation queries the response was YES. [2022-12-13 16:07:40,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390617 conditions, 150423 events. 110880/150423 cut-off events. For 87875/87875 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 899869 event pairs, 90097 based on Foata normal form. 842/134837 useless extension candidates. Maximal degree in co-relation 390581. Up to 150423 conditions per place. [2022-12-13 16:07:40,948 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 88 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2022-12-13 16:07:40,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 89 transitions, 573 flow [2022-12-13 16:07:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:07:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:07:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2833 transitions. [2022-12-13 16:07:40,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42120130835563485 [2022-12-13 16:07:40,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2833 transitions. [2022-12-13 16:07:40,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2833 transitions. [2022-12-13 16:07:40,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:07:40,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2833 transitions. [2022-12-13 16:07:40,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 944.3333333333334) internal successors, (2833), 3 states have internal predecessors, (2833), 0 states have call successors, (0), 0 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 16:07:40,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:07:40,964 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:07:40,964 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 415 flow. Second operand 3 states and 2833 transitions. [2022-12-13 16:07:40,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 89 transitions, 573 flow [2022-12-13 16:07:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 89 transitions, 554 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 16:07:41,460 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 378 flow [2022-12-13 16:07:41,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=97, PETRI_TRANSITIONS=89} [2022-12-13 16:07:41,460 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -9 predicate places. [2022-12-13 16:07:41,460 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 378 flow [2022-12-13 16:07:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:07:41,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:07:41,461 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:07:41,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 16:07:41,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 16:07:41,662 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:07:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:07:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash -542921928, now seen corresponding path program 1 times [2022-12-13 16:07:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:07:41,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758477863] [2022-12-13 16:07:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:41,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:07:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:07:41,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:07:41,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758477863] [2022-12-13 16:07:41,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758477863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:07:41,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078668504] [2022-12-13 16:07:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:07:41,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:07:41,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:07:41,801 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:07:41,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 16:07:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:07:42,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:07:42,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:07:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 16:07:42,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:07:42,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078668504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:07:42,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:07:42,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-12-13 16:07:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779164268] [2022-12-13 16:07:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:07:42,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 16:07:42,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:07:42,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 16:07:42,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:07:42,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 924 out of 2242 [2022-12-13 16:07:42,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 378 flow. Second operand has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:07:42,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:07:42,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 924 of 2242 [2022-12-13 16:07:42,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:07,157 INFO L130 PetriNetUnfolder]: 99616/135107 cut-off events. [2022-12-13 16:08:07,158 INFO L131 PetriNetUnfolder]: For 75188/75188 co-relation queries the response was YES. [2022-12-13 16:08:07,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332506 conditions, 135107 events. 99616/135107 cut-off events. For 75188/75188 co-relation queries the response was YES. Maximal size of possible extension queue 1352. Compared 795609 event pairs, 80523 based on Foata normal form. 3958/122409 useless extension candidates. Maximal degree in co-relation 332473. Up to 135107 conditions per place. [2022-12-13 16:08:08,409 INFO L137 encePairwiseOnDemand]: 2239/2242 looper letters, 84 selfloop transitions, 1 changer transitions 2/87 dead transitions. [2022-12-13 16:08:08,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 87 transitions, 538 flow [2022-12-13 16:08:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 16:08:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 16:08:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2831 transitions. [2022-12-13 16:08:08,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4209039548022599 [2022-12-13 16:08:08,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2831 transitions. [2022-12-13 16:08:08,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2831 transitions. [2022-12-13 16:08:08,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:08,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2831 transitions. [2022-12-13 16:08:08,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 943.6666666666666) internal successors, (2831), 3 states have internal predecessors, (2831), 0 states have call successors, (0), 0 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 16:08:08,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:08:08,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 2242.0) internal successors, (8968), 4 states have internal predecessors, (8968), 0 states have call successors, (0), 0 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 16:08:08,420 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 378 flow. Second operand 3 states and 2831 transitions. [2022-12-13 16:08:08,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 87 transitions, 538 flow [2022-12-13 16:08:08,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 527 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 16:08:08,755 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 350 flow [2022-12-13 16:08:08,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2022-12-13 16:08:08,755 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -14 predicate places. [2022-12-13 16:08:08,755 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 350 flow [2022-12-13 16:08:08,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 929.0) internal successors, (2787), 3 states have internal predecessors, (2787), 0 states have call successors, (0), 0 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 16:08:08,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:08,756 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:08,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 16:08:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 16:08:08,957 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:08:08,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:08,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1163905320, now seen corresponding path program 1 times [2022-12-13 16:08:08,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:08,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775772159] [2022-12-13 16:08:08,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:08,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:08:09,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:09,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775772159] [2022-12-13 16:08:09,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775772159] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:09,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036738678] [2022-12-13 16:08:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:09,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:09,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:09,021 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:09,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 16:08:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:09,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:08:09,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:09,248 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:08:09,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:08:09,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036738678] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:09,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:08:09,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 16:08:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779887308] [2022-12-13 16:08:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:09,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:09,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:08:09,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:08:09,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 923.25) internal successors, (3693), 4 states have internal predecessors, (3693), 0 states have call successors, (0), 0 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 16:08:09,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:09,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:08:09,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:34,270 INFO L130 PetriNetUnfolder]: 91620/126055 cut-off events. [2022-12-13 16:08:34,270 INFO L131 PetriNetUnfolder]: For 23234/23234 co-relation queries the response was YES. [2022-12-13 16:08:34,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292949 conditions, 126055 events. 91620/126055 cut-off events. For 23234/23234 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 747140 event pairs, 4103 based on Foata normal form. 5292/116483 useless extension candidates. Maximal degree in co-relation 292919. Up to 91432 conditions per place. [2022-12-13 16:08:35,051 INFO L137 encePairwiseOnDemand]: 2237/2242 looper letters, 151 selfloop transitions, 2 changer transitions 6/159 dead transitions. [2022-12-13 16:08:35,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 870 flow [2022-12-13 16:08:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:08:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:08:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3801 transitions. [2022-12-13 16:08:35,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4238403211418377 [2022-12-13 16:08:35,054 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3801 transitions. [2022-12-13 16:08:35,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3801 transitions. [2022-12-13 16:08:35,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:35,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3801 transitions. [2022-12-13 16:08:35,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 950.25) internal successors, (3801), 4 states have internal predecessors, (3801), 0 states have call successors, (0), 0 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 16:08:35,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2242.0) internal successors, (11210), 5 states have internal predecessors, (11210), 0 states have call successors, (0), 0 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 16:08:35,063 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2242.0) internal successors, (11210), 5 states have internal predecessors, (11210), 0 states have call successors, (0), 0 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 16:08:35,063 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 350 flow. Second operand 4 states and 3801 transitions. [2022-12-13 16:08:35,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 870 flow [2022-12-13 16:08:35,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 159 transitions, 869 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 16:08:35,078 INFO L231 Difference]: Finished difference. Result has 88 places, 74 transitions, 313 flow [2022-12-13 16:08:35,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=88, PETRI_TRANSITIONS=74} [2022-12-13 16:08:35,079 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -18 predicate places. [2022-12-13 16:08:35,079 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 74 transitions, 313 flow [2022-12-13 16:08:35,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 923.25) internal successors, (3693), 4 states have internal predecessors, (3693), 0 states have call successors, (0), 0 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 16:08:35,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:35,080 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:35,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 16:08:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:35,281 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:08:35,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash 117825134, now seen corresponding path program 1 times [2022-12-13 16:08:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:35,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511533319] [2022-12-13 16:08:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:35,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:08:35,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:35,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511533319] [2022-12-13 16:08:35,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511533319] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:35,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506791866] [2022-12-13 16:08:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:35,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:35,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:35,348 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:35,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 16:08:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:35,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:08:35,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:35,549 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:08:35,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:08:35,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506791866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:08:35,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:08:35,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 16:08:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004240807] [2022-12-13 16:08:35,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:08:35,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:08:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:35,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:08:35,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:08:35,589 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 918 out of 2242 [2022-12-13 16:08:35,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 74 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 924.0) internal successors, (3696), 4 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 16:08:35,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:35,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 918 of 2242 [2022-12-13 16:08:35,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:08:53,923 INFO L130 PetriNetUnfolder]: 75676/104191 cut-off events. [2022-12-13 16:08:53,923 INFO L131 PetriNetUnfolder]: For 25737/25737 co-relation queries the response was YES. [2022-12-13 16:08:54,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241741 conditions, 104191 events. 75676/104191 cut-off events. For 25737/25737 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 600739 event pairs, 1625 based on Foata normal form. 0/95767 useless extension candidates. Maximal degree in co-relation 241711. Up to 57320 conditions per place. [2022-12-13 16:08:54,611 INFO L137 encePairwiseOnDemand]: 2237/2242 looper letters, 138 selfloop transitions, 2 changer transitions 0/140 dead transitions. [2022-12-13 16:08:54,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 140 transitions, 793 flow [2022-12-13 16:08:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 16:08:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 16:08:54,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3776 transitions. [2022-12-13 16:08:54,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2022-12-13 16:08:54,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3776 transitions. [2022-12-13 16:08:54,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3776 transitions. [2022-12-13 16:08:54,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:08:54,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3776 transitions. [2022-12-13 16:08:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 944.0) internal successors, (3776), 4 states have internal predecessors, (3776), 0 states have call successors, (0), 0 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 16:08:54,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 2242.0) internal successors, (11210), 5 states have internal predecessors, (11210), 0 states have call successors, (0), 0 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 16:08:54,624 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 2242.0) internal successors, (11210), 5 states have internal predecessors, (11210), 0 states have call successors, (0), 0 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 16:08:54,624 INFO L175 Difference]: Start difference. First operand has 88 places, 74 transitions, 313 flow. Second operand 4 states and 3776 transitions. [2022-12-13 16:08:54,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 140 transitions, 793 flow [2022-12-13 16:08:54,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 140 transitions, 784 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:08:54,635 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 302 flow [2022-12-13 16:08:54,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2022-12-13 16:08:54,636 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -21 predicate places. [2022-12-13 16:08:54,636 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 302 flow [2022-12-13 16:08:54,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 924.0) internal successors, (3696), 4 states have internal predecessors, (3696), 0 states have call successors, (0), 0 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 16:08:54,636 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:08:54,636 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:54,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 16:08:54,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 16:08:54,838 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:08:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash 117825566, now seen corresponding path program 1 times [2022-12-13 16:08:54,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:54,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891614535] [2022-12-13 16:08:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:54,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:08:54,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891614535] [2022-12-13 16:08:54,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891614535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:08:54,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868402640] [2022-12-13 16:08:54,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:54,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:54,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:54,904 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:54,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 16:08:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:08:55,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 16:08:55,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:08:55,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:08:55,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868402640] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:55,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:08:55,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 16:08:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785428999] [2022-12-13 16:08:55,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:55,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:08:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:08:55,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 16:08:55,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 916 out of 2242 [2022-12-13 16:08:55,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 922.7142857142857) internal successors, (6459), 7 states have internal predecessors, (6459), 0 states have call successors, (0), 0 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 16:08:55,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:08:55,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 916 of 2242 [2022-12-13 16:08:55,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:09:21,344 INFO L130 PetriNetUnfolder]: 104612/143783 cut-off events. [2022-12-13 16:09:21,344 INFO L131 PetriNetUnfolder]: For 34275/34275 co-relation queries the response was YES. [2022-12-13 16:09:21,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332225 conditions, 143783 events. 104612/143783 cut-off events. For 34275/34275 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 848683 event pairs, 34385 based on Foata normal form. 3552/135607 useless extension candidates. Maximal degree in co-relation 332195. Up to 56327 conditions per place. [2022-12-13 16:09:22,269 INFO L137 encePairwiseOnDemand]: 2236/2242 looper letters, 147 selfloop transitions, 4 changer transitions 0/151 dead transitions. [2022-12-13 16:09:22,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 151 transitions, 832 flow [2022-12-13 16:09:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:09:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:09:22,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4696 transitions. [2022-12-13 16:09:22,274 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4189116859946476 [2022-12-13 16:09:22,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 4696 transitions. [2022-12-13 16:09:22,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 4696 transitions. [2022-12-13 16:09:22,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:09:22,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 4696 transitions. [2022-12-13 16:09:22,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 939.2) internal successors, (4696), 5 states have internal predecessors, (4696), 0 states have call successors, (0), 0 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 16:09:22,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 2242.0) internal successors, (13452), 6 states have internal predecessors, (13452), 0 states have call successors, (0), 0 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 16:09:22,285 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 2242.0) internal successors, (13452), 6 states have internal predecessors, (13452), 0 states have call successors, (0), 0 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 16:09:22,285 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 302 flow. Second operand 5 states and 4696 transitions. [2022-12-13 16:09:22,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 151 transitions, 832 flow [2022-12-13 16:09:22,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 151 transitions, 829 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:09:22,316 INFO L231 Difference]: Finished difference. Result has 87 places, 71 transitions, 315 flow [2022-12-13 16:09:22,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=315, PETRI_PLACES=87, PETRI_TRANSITIONS=71} [2022-12-13 16:09:22,317 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -19 predicate places. [2022-12-13 16:09:22,317 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 71 transitions, 315 flow [2022-12-13 16:09:22,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 922.7142857142857) internal successors, (6459), 7 states have internal predecessors, (6459), 0 states have call successors, (0), 0 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 16:09:22,318 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:09:22,318 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:09:22,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 16:09:22,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 16:09:22,519 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 114 more)] === [2022-12-13 16:09:22,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:09:22,520 INFO L85 PathProgramCache]: Analyzing trace with hash -155467711, now seen corresponding path program 1 times [2022-12-13 16:09:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:09:22,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269234524] [2022-12-13 16:09:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:22,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:09:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:09:22,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:09:22,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269234524] [2022-12-13 16:09:22,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269234524] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:09:22,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234552939] [2022-12-13 16:09:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:09:22,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:09:22,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:09:22,651 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:09:22,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 16:09:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:09:22,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 16:09:22,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:09:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:09:22,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:09:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 16:09:22,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234552939] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:09:22,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:09:22,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-13 16:09:22,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144887776] [2022-12-13 16:09:22,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:09:22,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:09:22,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:09:22,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:09:22,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:09:23,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 917 out of 2242 [2022-12-13 16:09:23,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 315 flow. Second operand has 9 states, 9 states have (on average 924.2222222222222) internal successors, (8318), 9 states have internal predecessors, (8318), 0 states have call successors, (0), 0 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 16:09:23,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:09:23,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 917 of 2242 [2022-12-13 16:09:23,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:10:01,057 INFO L130 PetriNetUnfolder]: 133548/183375 cut-off events. [2022-12-13 16:10:01,057 INFO L131 PetriNetUnfolder]: For 51939/51939 co-relation queries the response was YES. [2022-12-13 16:10:01,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425705 conditions, 183375 events. 133548/183375 cut-off events. For 51939/51939 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 1086716 event pairs, 1625 based on Foata normal form. 2368/171895 useless extension candidates. Maximal degree in co-relation 425673. Up to 44912 conditions per place. [2022-12-13 16:10:01,942 INFO L137 encePairwiseOnDemand]: 2237/2242 looper letters, 0 selfloop transitions, 0 changer transitions 249/249 dead transitions. [2022-12-13 16:10:01,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 249 transitions, 1335 flow [2022-12-13 16:10:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:10:01,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:10:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6609 transitions. [2022-12-13 16:10:01,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42111635019752774 [2022-12-13 16:10:01,948 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 6609 transitions. [2022-12-13 16:10:01,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 6609 transitions. [2022-12-13 16:10:01,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:10:01,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 6609 transitions. [2022-12-13 16:10:01,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 944.1428571428571) internal successors, (6609), 7 states have internal predecessors, (6609), 0 states have call successors, (0), 0 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 16:10:01,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 2242.0) internal successors, (17936), 8 states have internal predecessors, (17936), 0 states have call successors, (0), 0 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 16:10:01,965 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 2242.0) internal successors, (17936), 8 states have internal predecessors, (17936), 0 states have call successors, (0), 0 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 16:10:01,965 INFO L175 Difference]: Start difference. First operand has 87 places, 71 transitions, 315 flow. Second operand 7 states and 6609 transitions. [2022-12-13 16:10:01,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 249 transitions, 1335 flow [2022-12-13 16:10:02,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 249 transitions, 1327 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 16:10:02,279 INFO L231 Difference]: Finished difference. Result has 88 places, 0 transitions, 0 flow [2022-12-13 16:10:02,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=2242, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=88, PETRI_TRANSITIONS=0} [2022-12-13 16:10:02,280 INFO L288 CegarLoopForPetriNet]: 106 programPoint places, -18 predicate places. [2022-12-13 16:10:02,280 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 0 transitions, 0 flow [2022-12-13 16:10:02,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 924.2222222222222) internal successors, (8318), 9 states have internal predecessors, (8318), 0 states have call successors, (0), 0 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 16:10:02,282 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (116 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (115 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (114 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (113 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (112 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (111 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (110 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (109 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (108 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (107 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (106 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (105 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (104 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (103 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (102 of 117 remaining) [2022-12-13 16:10:02,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (101 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (100 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (99 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (98 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (97 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (96 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (95 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (94 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (93 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (92 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (91 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (90 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (89 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (88 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (87 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (86 of 117 remaining) [2022-12-13 16:10:02,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (85 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (84 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (83 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (82 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (81 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (80 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 117 remaining) [2022-12-13 16:10:02,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (56 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (55 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 117 remaining) [2022-12-13 16:10:02,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 117 remaining) [2022-12-13 16:10:02,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 117 remaining) [2022-12-13 16:10:02,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 117 remaining) [2022-12-13 16:10:02,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 117 remaining) [2022-12-13 16:10:02,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 16:10:02,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 16:10:02,491 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:10:02,506 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 16:10:02,506 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:10:02,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:10:02 BasicIcfg [2022-12-13 16:10:02,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:10:02,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:10:02,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:10:02,517 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:10:02,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:59:51" (3/4) ... [2022-12-13 16:10:02,524 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:10:02,534 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 16:10:02,534 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 16:10:02,534 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 16:10:02,540 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2022-12-13 16:10:02,540 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 16:10:02,541 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 16:10:02,541 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:10:02,571 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:10:02,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:10:02,571 INFO L158 Benchmark]: Toolchain (without parser) took 612643.07ms. Allocated memory was 117.4MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 82.4MB in the beginning and 1.7GB in the end (delta: -1.7GB). Peak memory consumption was 7.8GB. Max. memory is 16.1GB. [2022-12-13 16:10:02,572 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:10:02,572 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.88ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 67.4MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 16:10:02,572 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.98ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 62.9MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 16:10:02,572 INFO L158 Benchmark]: Boogie Preprocessor took 33.60ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 59.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 16:10:02,572 INFO L158 Benchmark]: RCFGBuilder took 895.90ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 59.5MB in the beginning and 67.8MB in the end (delta: -8.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-12-13 16:10:02,572 INFO L158 Benchmark]: TraceAbstraction took 611385.67ms. Allocated memory was 142.6MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 66.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 9.3GB. Max. memory is 16.1GB. [2022-12-13 16:10:02,573 INFO L158 Benchmark]: Witness Printer took 54.38ms. Allocated memory is still 9.6GB. Free memory was 1.8GB in the beginning and 1.7GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 16:10:02,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.88ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 67.4MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.98ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 62.9MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.60ms. Allocated memory is still 117.4MB. Free memory was 62.9MB in the beginning and 59.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 895.90ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 59.5MB in the beginning and 67.8MB in the end (delta: -8.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * TraceAbstraction took 611385.67ms. Allocated memory was 142.6MB in the beginning and 9.6GB in the end (delta: 9.5GB). Free memory was 66.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 9.3GB. Max. memory is 16.1GB. * Witness Printer took 54.38ms. Allocated memory is still 9.6GB. Free memory was 1.8GB in the beginning and 1.7GB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 46.6s, 866 PlacesBefore, 106 PlacesAfterwards, 946 TransitionsBefore, 108 TransitionsAfterwards, 354078 CoEnabledTransitionPairs, 9 FixpointIterations, 206 TrivialSequentialCompositions, 747 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 213 ConcurrentYvCompositions, 78 ChoiceCompositions, 1272 TotalNumberOfCompositions, 353218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 337570, independent: 337228, independent conditional: 0, independent unconditional: 337228, dependent: 342, dependent conditional: 0, dependent unconditional: 342, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 211507, independent: 211444, independent conditional: 0, independent unconditional: 211444, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 337570, independent: 125784, independent conditional: 0, independent unconditional: 125784, dependent: 279, dependent conditional: 0, dependent unconditional: 279, unknown: 211507, unknown conditional: 0, unknown unconditional: 211507] , Statistics on independence cache: Total cache size (in pairs): 1278, Positive cache size: 1250, Positive conditional cache size: 0, Positive unconditional cache size: 1250, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 181]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 182]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 183]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 116]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 174]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 1519 locations, 117 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 611.2s, OverallIterations: 29, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 554.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 47.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4645 SdHoareTripleChecker+Valid, 7.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3955 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 341 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7146 IncrementalHoareTripleChecker+Invalid, 7487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 341 mSolverCounterUnsat, 60 mSDtfsCounter, 7146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 633 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=22, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1060 NumberOfCodeBlocks, 1025 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1175 ConstructedInterpolants, 0 QuantifiedInterpolants, 2657 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5234 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 52 InterpolantComputations, 22 PerfectInterpolantSequences, 1791/1970 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 60 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 16:10:02,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10863427-dcac-4053-b220-cb9ca9160622/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE