./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8 --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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- 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-e04fb08 [2022-11-16 11:45:12,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:45:12,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:45:12,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:45:12,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:45:12,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:45:12,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:45:12,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:45:12,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:45:12,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:45:12,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:45:12,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:45:12,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:45:12,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:45:12,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:45:12,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:45:12,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:45:12,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:45:12,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:45:12,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:45:12,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:45:12,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:45:12,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:45:12,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:45:12,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:45:12,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:45:12,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:45:12,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:45:12,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:45:12,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:45:12,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:45:12,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:45:12,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:45:12,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:45:12,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:45:12,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:45:12,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:45:12,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:45:12,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:45:12,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:45:12,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:45:12,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:45:12,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:45:12,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:45:12,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:45:12,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:45:12,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:45:12,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:45:12,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:45:12,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:45:12,995 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:45:12,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:45:12,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:45:12,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:45:12,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:45:12,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:45:12,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:45:12,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:45:12,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:45:12,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:45:12,998 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:45:12,998 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:45:12,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:45:12,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:45:12,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:45:12,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:45:12,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:45:13,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:45:13,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:13,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:45:13,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:45:13,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:45:13,002 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:45:13,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:45:13,003 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:45:13,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:45:13,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:45:13,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-16 11:45:13,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:45:13,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:45:13,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:45:13,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:45:13,335 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:45:13,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-16 11:45:13,428 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/data/4f13ce250/0e7efdfc15b54359a118117e73937af5/FLAGaaa3d1c4c [2022-11-16 11:45:13,891 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:45:13,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-16 11:45:13,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/data/4f13ce250/0e7efdfc15b54359a118117e73937af5/FLAGaaa3d1c4c [2022-11-16 11:45:14,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/data/4f13ce250/0e7efdfc15b54359a118117e73937af5 [2022-11-16 11:45:14,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:45:14,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:45:14,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:14,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:45:14,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:45:14,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b1891ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14, skipping insertion in model container [2022-11-16 11:45:14,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:45:14,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:45:14,552 WARN L229 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_ce397402-a4dd-4cab-9b6f-cfb202bebcea/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-16 11:45:14,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:14,562 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:45:14,598 WARN L229 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_ce397402-a4dd-4cab-9b6f-cfb202bebcea/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-16 11:45:14,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:14,615 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:45:14,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14 WrapperNode [2022-11-16 11:45:14,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:14,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:14,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:45:14,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:45:14,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,661 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2022-11-16 11:45:14,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:14,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:45:14,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:45:14,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:45:14,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,689 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:45:14,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:45:14,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:45:14,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:45:14,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (1/1) ... [2022-11-16 11:45:14,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:14,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:45:14,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce397402-a4dd-4cab-9b6f-cfb202bebcea/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:45:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:45:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:45:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:45:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:45:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:45:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:45:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:45:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:45:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:45:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:45:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:45:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:45:14,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:45:14,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:45:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:45:14,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:45:14,816 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:45:14,938 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:45:14,940 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:45:15,413 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:45:15,666 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:45:15,666 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:45:15,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:15 BoogieIcfgContainer [2022-11-16 11:45:15,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:45:15,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:45:15,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:45:15,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:45:15,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:45:14" (1/3) ... [2022-11-16 11:45:15,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ad9a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:15, skipping insertion in model container [2022-11-16 11:45:15,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:14" (2/3) ... [2022-11-16 11:45:15,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70ad9a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:15, skipping insertion in model container [2022-11-16 11:45:15,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:15" (3/3) ... [2022-11-16 11:45:15,681 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-16 11:45:15,696 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:45:15,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:45:15,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 11:45:15,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:45:15,794 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:45:15,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 163 transitions, 350 flow [2022-11-16 11:45:15,918 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-11-16 11:45:15,918 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:45:15,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 2/160 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-11-16 11:45:15,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 163 transitions, 350 flow [2022-11-16 11:45:15,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 139 transitions, 293 flow [2022-11-16 11:45:15,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:45:15,947 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;@2a71a5fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:45:15,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-16 11:45:15,968 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-16 11:45:15,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:45:15,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:15,969 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:15,970 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash -133424194, now seen corresponding path program 1 times [2022-11-16 11:45:15,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:15,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705192728] [2022-11-16 11:45:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:15,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:17,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705192728] [2022-11-16 11:45:17,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705192728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:17,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:17,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:45:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587930184] [2022-11-16 11:45:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:17,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:17,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:17,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:17,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:45:17,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:17,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:17,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:45:17,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:19,486 INFO L130 PetriNetUnfolder]: 5127/9650 cut-off events. [2022-11-16 11:45:19,486 INFO L131 PetriNetUnfolder]: For 780/780 co-relation queries the response was YES. [2022-11-16 11:45:19,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18230 conditions, 9650 events. 5127/9650 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 75889 event pairs, 2566 based on Foata normal form. 1/7797 useless extension candidates. Maximal degree in co-relation 16646. Up to 5207 conditions per place. [2022-11-16 11:45:19,590 INFO L137 encePairwiseOnDemand]: 143/163 looper letters, 94 selfloop transitions, 19 changer transitions 2/201 dead transitions. [2022-11-16 11:45:19,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 201 transitions, 668 flow [2022-11-16 11:45:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:45:19,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 839 transitions. [2022-11-16 11:45:19,620 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7353198948290973 [2022-11-16 11:45:19,621 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 839 transitions. [2022-11-16 11:45:19,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 839 transitions. [2022-11-16 11:45:19,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:19,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 839 transitions. [2022-11-16 11:45:19,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.85714285714286) internal successors, (839), 7 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,651 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 293 flow. Second operand 7 states and 839 transitions. [2022-11-16 11:45:19,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 201 transitions, 668 flow [2022-11-16 11:45:19,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:45:19,681 INFO L231 Difference]: Finished difference. Result has 153 places, 149 transitions, 412 flow [2022-11-16 11:45:19,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=153, PETRI_TRANSITIONS=149} [2022-11-16 11:45:19,690 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 5 predicate places. [2022-11-16 11:45:19,691 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 149 transitions, 412 flow [2022-11-16 11:45:19,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:19,693 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:19,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:45:19,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:19,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash 233557092, now seen corresponding path program 1 times [2022-11-16 11:45:19,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:19,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041516497] [2022-11-16 11:45:19,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:19,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:19,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:19,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041516497] [2022-11-16 11:45:19,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041516497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:19,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:19,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:45:19,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108599944] [2022-11-16 11:45:19,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:19,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:19,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:19,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:45:19,907 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-16 11:45:19,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 149 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:19,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:19,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-16 11:45:19,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:21,437 INFO L130 PetriNetUnfolder]: 4177/7873 cut-off events. [2022-11-16 11:45:21,437 INFO L131 PetriNetUnfolder]: For 3249/3249 co-relation queries the response was YES. [2022-11-16 11:45:21,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18398 conditions, 7873 events. 4177/7873 cut-off events. For 3249/3249 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 59940 event pairs, 2337 based on Foata normal form. 174/7157 useless extension candidates. Maximal degree in co-relation 6179. Up to 5983 conditions per place. [2022-11-16 11:45:21,513 INFO L137 encePairwiseOnDemand]: 154/163 looper letters, 80 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2022-11-16 11:45:21,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 689 flow [2022-11-16 11:45:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:45:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:45:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2022-11-16 11:45:21,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.754601226993865 [2022-11-16 11:45:21,517 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2022-11-16 11:45:21,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2022-11-16 11:45:21,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:21,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2022-11-16 11:45:21,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:21,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:21,523 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:21,523 INFO L175 Difference]: Start difference. First operand has 153 places, 149 transitions, 412 flow. Second operand 6 states and 738 transitions. [2022-11-16 11:45:21,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 689 flow [2022-11-16 11:45:21,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 176 transitions, 685 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:45:21,539 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 427 flow [2022-11-16 11:45:21,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-11-16 11:45:21,541 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 6 predicate places. [2022-11-16 11:45:21,541 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 427 flow [2022-11-16 11:45:21,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:21,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:21,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:21,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:45:21,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:21,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:21,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2099763897, now seen corresponding path program 1 times [2022-11-16 11:45:21,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:21,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091289680] [2022-11-16 11:45:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:21,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:21,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:21,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091289680] [2022-11-16 11:45:21,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091289680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:21,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:21,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:45:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604664744] [2022-11-16 11:45:21,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:21,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:21,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:21,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:21,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:45:21,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-16 11:45:21,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:21,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:21,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-16 11:45:21,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:23,070 INFO L130 PetriNetUnfolder]: 3241/7272 cut-off events. [2022-11-16 11:45:23,070 INFO L131 PetriNetUnfolder]: For 3818/4292 co-relation queries the response was YES. [2022-11-16 11:45:23,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16081 conditions, 7272 events. 3241/7272 cut-off events. For 3818/4292 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 63133 event pairs, 1350 based on Foata normal form. 210/6504 useless extension candidates. Maximal degree in co-relation 15459. Up to 2758 conditions per place. [2022-11-16 11:45:23,140 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 115 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2022-11-16 11:45:23,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 228 transitions, 929 flow [2022-11-16 11:45:23,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:45:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 880 transitions. [2022-11-16 11:45:23,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7712532865907099 [2022-11-16 11:45:23,144 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 880 transitions. [2022-11-16 11:45:23,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 880 transitions. [2022-11-16 11:45:23,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:23,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 880 transitions. [2022-11-16 11:45:23,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.71428571428571) internal successors, (880), 7 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:23,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:23,152 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:23,153 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 427 flow. Second operand 7 states and 880 transitions. [2022-11-16 11:45:23,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 228 transitions, 929 flow [2022-11-16 11:45:23,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 918 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:45:23,171 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 502 flow [2022-11-16 11:45:23,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2022-11-16 11:45:23,173 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 12 predicate places. [2022-11-16 11:45:23,173 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 502 flow [2022-11-16 11:45:23,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:23,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:23,174 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:23,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:45:23,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:23,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2099763898, now seen corresponding path program 1 times [2022-11-16 11:45:23,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:23,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470865384] [2022-11-16 11:45:23,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:23,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:23,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470865384] [2022-11-16 11:45:23,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470865384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:23,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:23,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:45:23,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376963097] [2022-11-16 11:45:23,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:23,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:23,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:23,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:45:23,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-16 11:45:23,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 502 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:23,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:23,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-16 11:45:23,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:24,452 INFO L130 PetriNetUnfolder]: 3002/6643 cut-off events. [2022-11-16 11:45:24,452 INFO L131 PetriNetUnfolder]: For 4592/5056 co-relation queries the response was YES. [2022-11-16 11:45:24,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16127 conditions, 6643 events. 3002/6643 cut-off events. For 4592/5056 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 55794 event pairs, 1699 based on Foata normal form. 355/6566 useless extension candidates. Maximal degree in co-relation 14829. Up to 3467 conditions per place. [2022-11-16 11:45:24,521 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 69 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2022-11-16 11:45:24,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 175 transitions, 713 flow [2022-11-16 11:45:24,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:45:24,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:45:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-11-16 11:45:24,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7627811860940695 [2022-11-16 11:45:24,526 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 746 transitions. [2022-11-16 11:45:24,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 746 transitions. [2022-11-16 11:45:24,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:24,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 746 transitions. [2022-11-16 11:45:24,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:24,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:24,538 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:24,539 INFO L175 Difference]: Start difference. First operand has 160 places, 156 transitions, 502 flow. Second operand 6 states and 746 transitions. [2022-11-16 11:45:24,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 175 transitions, 713 flow [2022-11-16 11:45:24,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 175 transitions, 692 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:45:24,572 INFO L231 Difference]: Finished difference. Result has 159 places, 154 transitions, 485 flow [2022-11-16 11:45:24,572 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=485, PETRI_PLACES=159, PETRI_TRANSITIONS=154} [2022-11-16 11:45:24,574 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 11 predicate places. [2022-11-16 11:45:24,574 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 154 transitions, 485 flow [2022-11-16 11:45:24,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:24,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:24,575 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:24,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:45:24,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1008298471, now seen corresponding path program 1 times [2022-11-16 11:45:24,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:24,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646855497] [2022-11-16 11:45:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:25,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646855497] [2022-11-16 11:45:25,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646855497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:25,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:25,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:45:25,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972828693] [2022-11-16 11:45:25,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:25,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:45:25,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:45:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:45:25,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:45:25,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 154 transitions, 485 flow. Second operand has 10 states, 10 states have (on average 103.8) internal successors, (1038), 10 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:25,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:25,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:45:25,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:27,575 INFO L130 PetriNetUnfolder]: 7897/15008 cut-off events. [2022-11-16 11:45:27,575 INFO L131 PetriNetUnfolder]: For 10396/10685 co-relation queries the response was YES. [2022-11-16 11:45:27,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37363 conditions, 15008 events. 7897/15008 cut-off events. For 10396/10685 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 127111 event pairs, 880 based on Foata normal form. 249/14828 useless extension candidates. Maximal degree in co-relation 28634. Up to 5149 conditions per place. [2022-11-16 11:45:27,724 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 146 selfloop transitions, 30 changer transitions 0/263 dead transitions. [2022-11-16 11:45:27,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 263 transitions, 1255 flow [2022-11-16 11:45:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:45:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-11-16 11:45:27,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7266530334014997 [2022-11-16 11:45:27,728 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-11-16 11:45:27,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-11-16 11:45:27,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:27,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-11-16 11:45:27,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,736 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,736 INFO L175 Difference]: Start difference. First operand has 159 places, 154 transitions, 485 flow. Second operand 9 states and 1066 transitions. [2022-11-16 11:45:27,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 263 transitions, 1255 flow [2022-11-16 11:45:27,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 263 transitions, 1241 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:45:27,761 INFO L231 Difference]: Finished difference. Result has 167 places, 176 transitions, 715 flow [2022-11-16 11:45:27,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=715, PETRI_PLACES=167, PETRI_TRANSITIONS=176} [2022-11-16 11:45:27,762 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 19 predicate places. [2022-11-16 11:45:27,762 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 176 transitions, 715 flow [2022-11-16 11:45:27,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.8) internal successors, (1038), 10 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:27,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:27,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:45:27,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1047882498, now seen corresponding path program 1 times [2022-11-16 11:45:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116161992] [2022-11-16 11:45:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:27,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:27,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:27,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116161992] [2022-11-16 11:45:27,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116161992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:27,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:27,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:45:27,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322063411] [2022-11-16 11:45:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:27,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:27,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:45:27,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-16 11:45:27,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 176 transitions, 715 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:27,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:27,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-16 11:45:27,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:30,254 INFO L130 PetriNetUnfolder]: 6581/13195 cut-off events. [2022-11-16 11:45:30,254 INFO L131 PetriNetUnfolder]: For 19155/19418 co-relation queries the response was YES. [2022-11-16 11:45:30,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37246 conditions, 13195 events. 6581/13195 cut-off events. For 19155/19418 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 116115 event pairs, 3419 based on Foata normal form. 668/13787 useless extension candidates. Maximal degree in co-relation 35154. Up to 9940 conditions per place. [2022-11-16 11:45:30,409 INFO L137 encePairwiseOnDemand]: 155/163 looper letters, 108 selfloop transitions, 8 changer transitions 0/207 dead transitions. [2022-11-16 11:45:30,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 207 transitions, 1134 flow [2022-11-16 11:45:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:45:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:45:30,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 731 transitions. [2022-11-16 11:45:30,413 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7474437627811861 [2022-11-16 11:45:30,413 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 731 transitions. [2022-11-16 11:45:30,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 731 transitions. [2022-11-16 11:45:30,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:30,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 731 transitions. [2022-11-16 11:45:30,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:30,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:30,419 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:30,420 INFO L175 Difference]: Start difference. First operand has 167 places, 176 transitions, 715 flow. Second operand 6 states and 731 transitions. [2022-11-16 11:45:30,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 207 transitions, 1134 flow [2022-11-16 11:45:30,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 207 transitions, 1108 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-16 11:45:30,488 INFO L231 Difference]: Finished difference. Result has 169 places, 177 transitions, 719 flow [2022-11-16 11:45:30,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=719, PETRI_PLACES=169, PETRI_TRANSITIONS=177} [2022-11-16 11:45:30,489 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 21 predicate places. [2022-11-16 11:45:30,490 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 177 transitions, 719 flow [2022-11-16 11:45:30,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:30,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:30,491 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:30,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:45:30,491 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash -713100683, now seen corresponding path program 1 times [2022-11-16 11:45:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:30,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029831322] [2022-11-16 11:45:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:30,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:31,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:31,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029831322] [2022-11-16 11:45:31,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029831322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:31,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:31,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806326206] [2022-11-16 11:45:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:31,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:45:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:45:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:45:31,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:45:31,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 177 transitions, 719 flow. Second operand has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:31,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:31,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:45:31,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:33,821 INFO L130 PetriNetUnfolder]: 10947/21160 cut-off events. [2022-11-16 11:45:33,821 INFO L131 PetriNetUnfolder]: For 29951/30277 co-relation queries the response was YES. [2022-11-16 11:45:33,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60634 conditions, 21160 events. 10947/21160 cut-off events. For 29951/30277 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 194136 event pairs, 1791 based on Foata normal form. 495/21583 useless extension candidates. Maximal degree in co-relation 51894. Up to 7894 conditions per place. [2022-11-16 11:45:34,030 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 164 selfloop transitions, 45 changer transitions 0/296 dead transitions. [2022-11-16 11:45:34,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 296 transitions, 1767 flow [2022-11-16 11:45:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:45:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 948 transitions. [2022-11-16 11:45:34,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7269938650306749 [2022-11-16 11:45:34,034 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 948 transitions. [2022-11-16 11:45:34,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 948 transitions. [2022-11-16 11:45:34,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:34,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 948 transitions. [2022-11-16 11:45:34,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,041 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,041 INFO L175 Difference]: Start difference. First operand has 169 places, 177 transitions, 719 flow. Second operand 8 states and 948 transitions. [2022-11-16 11:45:34,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 296 transitions, 1767 flow [2022-11-16 11:45:34,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 296 transitions, 1752 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:45:34,136 INFO L231 Difference]: Finished difference. Result has 176 places, 205 transitions, 1118 flow [2022-11-16 11:45:34,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1118, PETRI_PLACES=176, PETRI_TRANSITIONS=205} [2022-11-16 11:45:34,137 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 28 predicate places. [2022-11-16 11:45:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 205 transitions, 1118 flow [2022-11-16 11:45:34,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:34,139 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:34,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:45:34,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2035390406, now seen corresponding path program 1 times [2022-11-16 11:45:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:34,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074591143] [2022-11-16 11:45:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:34,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:34,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074591143] [2022-11-16 11:45:34,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074591143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:34,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:34,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:45:34,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349567679] [2022-11-16 11:45:34,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:34,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:45:34,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-16 11:45:34,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 205 transitions, 1118 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:34,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:34,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-16 11:45:34,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:37,001 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][186], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1), 272#true]) [2022-11-16 11:45:37,002 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,002 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,002 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,002 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,003 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][187], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1), 272#true]) [2022-11-16 11:45:37,003 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,003 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,003 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,003 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,005 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][217], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-16 11:45:37,005 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,005 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,005 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,005 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,006 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [120#L192-2true, Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-16 11:45:37,006 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,006 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,006 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,006 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,008 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][217], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-16 11:45:37,008 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,008 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,008 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,009 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,009 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 205#(<= ~i1~0 0), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-16 11:45:37,009 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,009 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,009 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,010 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:37,107 INFO L130 PetriNetUnfolder]: 10052/21651 cut-off events. [2022-11-16 11:45:37,107 INFO L131 PetriNetUnfolder]: For 59933/64679 co-relation queries the response was YES. [2022-11-16 11:45:37,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63446 conditions, 21651 events. 10052/21651 cut-off events. For 59933/64679 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 218329 event pairs, 3814 based on Foata normal form. 993/22042 useless extension candidates. Maximal degree in co-relation 61005. Up to 6392 conditions per place. [2022-11-16 11:45:37,696 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 157 selfloop transitions, 17 changer transitions 0/305 dead transitions. [2022-11-16 11:45:37,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 2099 flow [2022-11-16 11:45:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:45:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:45:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2022-11-16 11:45:37,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651183172655566 [2022-11-16 11:45:37,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2022-11-16 11:45:37,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2022-11-16 11:45:37,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:37,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2022-11-16 11:45:37,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,731 INFO L175 Difference]: Start difference. First operand has 176 places, 205 transitions, 1118 flow. Second operand 7 states and 873 transitions. [2022-11-16 11:45:37,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 2099 flow [2022-11-16 11:45:37,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 305 transitions, 2089 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-16 11:45:37,819 INFO L231 Difference]: Finished difference. Result has 183 places, 210 transitions, 1198 flow [2022-11-16 11:45:37,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1198, PETRI_PLACES=183, PETRI_TRANSITIONS=210} [2022-11-16 11:45:37,820 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 35 predicate places. [2022-11-16 11:45:37,821 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 210 transitions, 1198 flow [2022-11-16 11:45:37,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,821 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:37,821 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:37,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:45:37,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:37,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:37,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2035390407, now seen corresponding path program 1 times [2022-11-16 11:45:37,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:37,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685651459] [2022-11-16 11:45:37,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:37,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:37,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:37,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685651459] [2022-11-16 11:45:37,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685651459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:37,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:37,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:45:37,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613108716] [2022-11-16 11:45:37,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:37,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:45:37,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:37,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:45:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:45:37,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-16 11:45:37,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 210 transitions, 1198 flow. Second operand has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:37,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:37,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-16 11:45:37,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:41,076 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 277#(<= ~i2~0 0), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-16 11:45:41,076 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,077 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,077 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,077 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,077 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 277#(<= ~i2~0 0), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-16 11:45:41,077 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,077 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,077 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,077 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,079 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-16 11:45:41,079 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,079 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,079 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,079 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,080 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-16 11:45:41,080 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,080 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,080 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,080 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,081 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), 277#(<= ~i2~0 0), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 264#(<= ~n1~0 1), Black: 276#(<= ~i~0 0), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0)), 120#L192-2true, thread3Thread1of1ForFork2InUse, Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0))]) [2022-11-16 11:45:41,082 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,082 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,082 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,082 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,082 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), 277#(<= ~i2~0 0), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), 264#(<= ~n1~0 1), Black: 276#(<= ~i~0 0), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0)), 120#L192-2true, thread3Thread1of1ForFork2InUse, Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0))]) [2022-11-16 11:45:41,082 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,082 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,083 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,083 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-16 11:45:41,256 INFO L130 PetriNetUnfolder]: 8863/19351 cut-off events. [2022-11-16 11:45:41,256 INFO L131 PetriNetUnfolder]: For 57477/61649 co-relation queries the response was YES. [2022-11-16 11:45:41,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60451 conditions, 19351 events. 8863/19351 cut-off events. For 57477/61649 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 193503 event pairs, 4608 based on Foata normal form. 1616/20600 useless extension candidates. Maximal degree in co-relation 58132. Up to 9385 conditions per place. [2022-11-16 11:45:41,436 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 101 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-11-16 11:45:41,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 239 transitions, 1606 flow [2022-11-16 11:45:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:45:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:45:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2022-11-16 11:45:41,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7717791411042945 [2022-11-16 11:45:41,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2022-11-16 11:45:41,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2022-11-16 11:45:41,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:41,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2022-11-16 11:45:41,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:41,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:41,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:41,447 INFO L175 Difference]: Start difference. First operand has 183 places, 210 transitions, 1198 flow. Second operand 5 states and 629 transitions. [2022-11-16 11:45:41,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 239 transitions, 1606 flow [2022-11-16 11:45:41,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 239 transitions, 1583 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:45:41,630 INFO L231 Difference]: Finished difference. Result has 181 places, 208 transitions, 1179 flow [2022-11-16 11:45:41,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1179, PETRI_PLACES=181, PETRI_TRANSITIONS=208} [2022-11-16 11:45:41,631 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 33 predicate places. [2022-11-16 11:45:41,632 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 208 transitions, 1179 flow [2022-11-16 11:45:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:41,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:41,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:41,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:45:41,632 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:41,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 814500919, now seen corresponding path program 1 times [2022-11-16 11:45:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:41,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70587656] [2022-11-16 11:45:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:42,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70587656] [2022-11-16 11:45:42,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70587656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:42,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:42,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:45:42,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735135985] [2022-11-16 11:45:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:42,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:45:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:45:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:45:42,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:45:42,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 208 transitions, 1179 flow. Second operand has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:42,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:42,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:45:42,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:47,003 INFO L130 PetriNetUnfolder]: 15066/30063 cut-off events. [2022-11-16 11:45:47,003 INFO L131 PetriNetUnfolder]: For 83964/84390 co-relation queries the response was YES. [2022-11-16 11:45:47,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99191 conditions, 30063 events. 15066/30063 cut-off events. For 83964/84390 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 294274 event pairs, 4028 based on Foata normal form. 509/30418 useless extension candidates. Maximal degree in co-relation 96052. Up to 12591 conditions per place. [2022-11-16 11:45:47,278 INFO L137 encePairwiseOnDemand]: 147/163 looper letters, 214 selfloop transitions, 54 changer transitions 2/358 dead transitions. [2022-11-16 11:45:47,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 358 transitions, 2794 flow [2022-11-16 11:45:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:45:47,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1052 transitions. [2022-11-16 11:45:47,282 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7171097477845945 [2022-11-16 11:45:47,282 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1052 transitions. [2022-11-16 11:45:47,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1052 transitions. [2022-11-16 11:45:47,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:47,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1052 transitions. [2022-11-16 11:45:47,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.88888888888889) internal successors, (1052), 9 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:47,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:47,289 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:47,289 INFO L175 Difference]: Start difference. First operand has 181 places, 208 transitions, 1179 flow. Second operand 9 states and 1052 transitions. [2022-11-16 11:45:47,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 358 transitions, 2794 flow [2022-11-16 11:45:47,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 358 transitions, 2780 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:45:47,761 INFO L231 Difference]: Finished difference. Result has 191 places, 248 transitions, 1870 flow [2022-11-16 11:45:47,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1870, PETRI_PLACES=191, PETRI_TRANSITIONS=248} [2022-11-16 11:45:47,762 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 43 predicate places. [2022-11-16 11:45:47,762 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 248 transitions, 1870 flow [2022-11-16 11:45:47,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:47,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:47,763 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:47,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:45:47,764 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:47,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:47,764 INFO L85 PathProgramCache]: Analyzing trace with hash 955634871, now seen corresponding path program 1 times [2022-11-16 11:45:47,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:47,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093339183] [2022-11-16 11:45:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:47,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:48,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:48,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093339183] [2022-11-16 11:45:48,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093339183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:48,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:48,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:45:48,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188490842] [2022-11-16 11:45:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:45:48,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:45:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:45:48,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:45:48,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 248 transitions, 1870 flow. Second operand has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:48,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:48,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:45:48,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:45:54,240 INFO L130 PetriNetUnfolder]: 18585/37025 cut-off events. [2022-11-16 11:45:54,240 INFO L131 PetriNetUnfolder]: For 138893/139498 co-relation queries the response was YES. [2022-11-16 11:45:54,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128027 conditions, 37025 events. 18585/37025 cut-off events. For 138893/139498 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 375647 event pairs, 7873 based on Foata normal form. 749/37535 useless extension candidates. Maximal degree in co-relation 115381. Up to 19314 conditions per place. [2022-11-16 11:45:54,581 INFO L137 encePairwiseOnDemand]: 149/163 looper letters, 235 selfloop transitions, 51 changer transitions 0/374 dead transitions. [2022-11-16 11:45:54,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 374 transitions, 3447 flow [2022-11-16 11:45:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:54,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:45:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 941 transitions. [2022-11-16 11:45:54,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7216257668711656 [2022-11-16 11:45:54,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 941 transitions. [2022-11-16 11:45:54,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 941 transitions. [2022-11-16 11:45:54,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:45:54,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 941 transitions. [2022-11-16 11:45:54,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:54,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:54,592 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:54,592 INFO L175 Difference]: Start difference. First operand has 191 places, 248 transitions, 1870 flow. Second operand 8 states and 941 transitions. [2022-11-16 11:45:54,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 374 transitions, 3447 flow [2022-11-16 11:45:54,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 374 transitions, 3435 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-16 11:45:55,002 INFO L231 Difference]: Finished difference. Result has 199 places, 264 transitions, 2225 flow [2022-11-16 11:45:55,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2225, PETRI_PLACES=199, PETRI_TRANSITIONS=264} [2022-11-16 11:45:55,003 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 51 predicate places. [2022-11-16 11:45:55,003 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 264 transitions, 2225 flow [2022-11-16 11:45:55,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:55,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:45:55,004 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:55,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:45:55,004 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:45:55,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:55,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2079312951, now seen corresponding path program 2 times [2022-11-16 11:45:55,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:55,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690230369] [2022-11-16 11:45:55,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:55,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:45:55,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:55,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690230369] [2022-11-16 11:45:55,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690230369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:55,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:55,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:45:55,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141096566] [2022-11-16 11:45:55,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:55,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:45:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:55,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:45:55,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:45:55,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:45:55,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 264 transitions, 2225 flow. Second operand has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:55,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:45:55,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:45:55,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:03,003 INFO L130 PetriNetUnfolder]: 21184/42000 cut-off events. [2022-11-16 11:46:03,003 INFO L131 PetriNetUnfolder]: For 183517/184090 co-relation queries the response was YES. [2022-11-16 11:46:03,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151592 conditions, 42000 events. 21184/42000 cut-off events. For 183517/184090 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 433894 event pairs, 7575 based on Foata normal form. 681/42424 useless extension candidates. Maximal degree in co-relation 147678. Up to 19379 conditions per place. [2022-11-16 11:46:03,411 INFO L137 encePairwiseOnDemand]: 148/163 looper letters, 258 selfloop transitions, 77 changer transitions 0/423 dead transitions. [2022-11-16 11:46:03,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 423 transitions, 4417 flow [2022-11-16 11:46:03,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:46:03,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:46:03,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2022-11-16 11:46:03,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7123381049761418 [2022-11-16 11:46:03,416 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2022-11-16 11:46:03,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2022-11-16 11:46:03,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:03,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2022-11-16 11:46:03,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:03,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:03,424 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:03,425 INFO L175 Difference]: Start difference. First operand has 199 places, 264 transitions, 2225 flow. Second operand 9 states and 1045 transitions. [2022-11-16 11:46:03,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 423 transitions, 4417 flow [2022-11-16 11:46:04,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 423 transitions, 4398 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-16 11:46:04,618 INFO L231 Difference]: Finished difference. Result has 210 places, 316 transitions, 3197 flow [2022-11-16 11:46:04,619 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2208, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3197, PETRI_PLACES=210, PETRI_TRANSITIONS=316} [2022-11-16 11:46:04,619 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 62 predicate places. [2022-11-16 11:46:04,619 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 316 transitions, 3197 flow [2022-11-16 11:46:04,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:04,620 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:04,620 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:04,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:46:04,621 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:46:04,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:04,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1487030583, now seen corresponding path program 1 times [2022-11-16 11:46:04,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:04,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864737788] [2022-11-16 11:46:04,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:04,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:05,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:05,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864737788] [2022-11-16 11:46:05,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864737788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:05,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:05,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:46:05,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250146660] [2022-11-16 11:46:05,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:05,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:46:05,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:05,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:46:05,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:05,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:46:05,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 316 transitions, 3197 flow. Second operand has 8 states, 8 states have (on average 104.375) internal successors, (835), 8 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:05,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:05,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:46:05,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:46:14,794 INFO L130 PetriNetUnfolder]: 25841/51787 cut-off events. [2022-11-16 11:46:14,794 INFO L131 PetriNetUnfolder]: For 281764/282757 co-relation queries the response was YES. [2022-11-16 11:46:15,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193885 conditions, 51787 events. 25841/51787 cut-off events. For 281764/282757 co-relation queries the response was YES. Maximal size of possible extension queue 2050. Compared 554685 event pairs, 8803 based on Foata normal form. 1146/52678 useless extension candidates. Maximal degree in co-relation 189732. Up to 25776 conditions per place. [2022-11-16 11:46:15,420 INFO L137 encePairwiseOnDemand]: 148/163 looper letters, 308 selfloop transitions, 81 changer transitions 0/477 dead transitions. [2022-11-16 11:46:15,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 477 transitions, 5608 flow [2022-11-16 11:46:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:46:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:46:15,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 948 transitions. [2022-11-16 11:46:15,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7269938650306749 [2022-11-16 11:46:15,424 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 948 transitions. [2022-11-16 11:46:15,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 948 transitions. [2022-11-16 11:46:15,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:46:15,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 948 transitions. [2022-11-16 11:46:15,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:15,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:15,432 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:15,432 INFO L175 Difference]: Start difference. First operand has 210 places, 316 transitions, 3197 flow. Second operand 8 states and 948 transitions. [2022-11-16 11:46:15,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 477 transitions, 5608 flow [2022-11-16 11:46:17,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 477 transitions, 5572 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-11-16 11:46:17,258 INFO L231 Difference]: Finished difference. Result has 220 places, 354 transitions, 4083 flow [2022-11-16 11:46:17,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4083, PETRI_PLACES=220, PETRI_TRANSITIONS=354} [2022-11-16 11:46:17,259 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 72 predicate places. [2022-11-16 11:46:17,259 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 354 transitions, 4083 flow [2022-11-16 11:46:17,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.375) internal successors, (835), 8 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:17,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:46:17,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:17,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:46:17,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-16 11:46:17,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:17,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1447461047, now seen corresponding path program 2 times [2022-11-16 11:46:17,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:17,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861454488] [2022-11-16 11:46:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:17,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:46:17,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861454488] [2022-11-16 11:46:17,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861454488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:17,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:17,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:46:17,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539112541] [2022-11-16 11:46:17,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:17,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:46:17,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:17,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:46:17,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:46:17,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-16 11:46:17,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 354 transitions, 4083 flow. Second operand has 8 states, 8 states have (on average 104.375) internal successors, (835), 8 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:17,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:46:17,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-16 11:46:17,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand