./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 8393723b 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_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 19:42:07,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:42:07,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:42:07,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:42:07,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:42:07,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:42:07,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:42:07,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:42:07,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:42:07,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:42:07,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:42:07,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:42:07,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:42:07,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:42:07,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:42:07,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:42:07,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:42:07,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:42:07,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:42:07,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:42:07,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:42:07,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:42:07,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:42:07,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:42:07,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:42:07,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:42:07,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:42:07,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:42:07,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:42:07,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:42:07,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:42:07,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:42:07,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:42:07,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:42:07,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:42:07,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:42:07,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:42:07,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:42:07,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:42:07,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:42:07,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:42:07,867 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:42:07,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:42:07,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:42:07,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:42:07,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:42:07,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:42:07,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:42:07,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:42:07,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:42:07,899 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:42:07,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:42:07,900 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:42:07,900 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:42:07,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:42:07,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:42:07,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:42:07,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:42:07,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:42:07,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:42:07,902 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:42:07,902 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:42:07,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:42:07,903 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:42:07,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:42:07,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:42:07,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:42:07,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:42:07,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:42:07,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:42:07,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:42:07,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:42:07,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:42:07,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:42:07,906 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:42:07,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:42:07,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:42:07,907 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_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-18 19:42:08,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:42:08,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:42:08,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:42:08,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:42:08,337 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:42:08,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-18 19:42:08,418 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/data/50ca7db79/686f4b6ed43d4e378e39e9b03d61e945/FLAG1b307146b [2022-11-18 19:42:09,117 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:42:09,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-18 19:42:09,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/data/50ca7db79/686f4b6ed43d4e378e39e9b03d61e945/FLAG1b307146b [2022-11-18 19:42:09,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/data/50ca7db79/686f4b6ed43d4e378e39e9b03d61e945 [2022-11-18 19:42:09,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:42:09,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:42:09,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:09,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:42:09,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:42:09,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecfc993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09, skipping insertion in model container [2022-11-18 19:42:09,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:42:09,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:42:09,770 WARN L234 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_1849ee81-0d6a-4ab9-9922-88de2d7fc327/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-18 19:42:09,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:09,781 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:42:09,823 WARN L234 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_1849ee81-0d6a-4ab9-9922-88de2d7fc327/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-18 19:42:09,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:42:09,842 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:42:09,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09 WrapperNode [2022-11-18 19:42:09,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:42:09,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:09,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:42:09,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:42:09,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,900 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2022-11-18 19:42:09,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:42:09,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:42:09,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:42:09,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:42:09,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,933 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:42:09,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:42:09,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:42:09,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:42:09,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (1/1) ... [2022-11-18 19:42:09,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:42:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:42:09,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:42:10,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1849ee81-0d6a-4ab9-9922-88de2d7fc327/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:42:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:42:10,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:42:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:42:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:42:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:42:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:42:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:42:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:42:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:42:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:42:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 19:42:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 19:42:10,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:42:10,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:42:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:42:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:42:10,067 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:42:10,252 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:42:10,255 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:42:10,943 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:42:11,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:42:11,222 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:42:11,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:11 BoogieIcfgContainer [2022-11-18 19:42:11,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:42:11,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:42:11,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:42:11,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:42:11,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:42:09" (1/3) ... [2022-11-18 19:42:11,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b273c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:42:11, skipping insertion in model container [2022-11-18 19:42:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:42:09" (2/3) ... [2022-11-18 19:42:11,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b273c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:42:11, skipping insertion in model container [2022-11-18 19:42:11,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:42:11" (3/3) ... [2022-11-18 19:42:11,245 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-18 19:42:11,256 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:42:11,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:42:11,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-18 19:42:11,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:42:11,414 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:42:11,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 163 transitions, 350 flow [2022-11-18 19:42:11,649 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-11-18 19:42:11,652 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:42:11,659 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. [2022-11-18 19:42:11,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 163 transitions, 350 flow [2022-11-18 19:42:11,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 139 transitions, 293 flow [2022-11-18 19:42:11,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:42:11,716 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;@50c5210, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:42:11,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-18 19:42:11,752 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-18 19:42:11,752 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:42:11,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:11,754 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] [2022-11-18 19:42:11,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:11,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash -133424194, now seen corresponding path program 1 times [2022-11-18 19:42:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:11,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992388519] [2022-11-18 19:42:11,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:11,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992388519] [2022-11-18 19:42:12,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992388519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:12,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:12,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:42:12,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730355535] [2022-11-18 19:42:12,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:12,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:42:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:42:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:42:13,041 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-18 19:42:13,052 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) [2022-11-18 19:42:13,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:13,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-18 19:42:13,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:15,632 INFO L130 PetriNetUnfolder]: 5127/9650 cut-off events. [2022-11-18 19:42:15,633 INFO L131 PetriNetUnfolder]: For 780/780 co-relation queries the response was YES. [2022-11-18 19:42:15,667 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. [2022-11-18 19:42:15,740 INFO L137 encePairwiseOnDemand]: 143/163 looper letters, 94 selfloop transitions, 19 changer transitions 2/201 dead transitions. [2022-11-18 19:42:15,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 201 transitions, 668 flow [2022-11-18 19:42:15,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:42:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:42:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 839 transitions. [2022-11-18 19:42:15,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7353198948290973 [2022-11-18 19:42:15,762 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 839 transitions. [2022-11-18 19:42:15,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 839 transitions. [2022-11-18 19:42:15,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:15,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 839 transitions. [2022-11-18 19:42:15,777 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) [2022-11-18 19:42:15,786 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) [2022-11-18 19:42:15,788 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) [2022-11-18 19:42:15,790 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 293 flow. Second operand 7 states and 839 transitions. [2022-11-18 19:42:15,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 201 transitions, 668 flow [2022-11-18 19:42:15,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:42:15,826 INFO L231 Difference]: Finished difference. Result has 153 places, 149 transitions, 412 flow [2022-11-18 19:42:15,828 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} [2022-11-18 19:42:15,869 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 5 predicate places. [2022-11-18 19:42:15,869 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 149 transitions, 412 flow [2022-11-18 19:42:15,870 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) [2022-11-18 19:42:15,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:15,870 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] [2022-11-18 19:42:15,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:42:15,871 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:15,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:15,872 INFO L85 PathProgramCache]: Analyzing trace with hash 233557092, now seen corresponding path program 1 times [2022-11-18 19:42:15,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:15,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332980821] [2022-11-18 19:42:15,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:16,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332980821] [2022-11-18 19:42:16,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332980821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:16,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:16,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:16,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204850465] [2022-11-18 19:42:16,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:16,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:16,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-18 19:42:16,139 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) [2022-11-18 19:42:16,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:16,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-18 19:42:16,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:18,027 INFO L130 PetriNetUnfolder]: 4177/7873 cut-off events. [2022-11-18 19:42:18,028 INFO L131 PetriNetUnfolder]: For 3249/3249 co-relation queries the response was YES. [2022-11-18 19:42:18,058 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. [2022-11-18 19:42:18,189 INFO L137 encePairwiseOnDemand]: 154/163 looper letters, 80 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2022-11-18 19:42:18,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 689 flow [2022-11-18 19:42:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:18,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:42:18,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2022-11-18 19:42:18,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.754601226993865 [2022-11-18 19:42:18,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2022-11-18 19:42:18,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2022-11-18 19:42:18,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:18,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2022-11-18 19:42:18,199 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) [2022-11-18 19:42:18,203 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) [2022-11-18 19:42:18,204 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) [2022-11-18 19:42:18,204 INFO L175 Difference]: Start difference. First operand has 153 places, 149 transitions, 412 flow. Second operand 6 states and 738 transitions. [2022-11-18 19:42:18,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 689 flow [2022-11-18 19:42:18,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 176 transitions, 685 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:42:18,216 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 427 flow [2022-11-18 19:42:18,216 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} [2022-11-18 19:42:18,218 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 6 predicate places. [2022-11-18 19:42:18,218 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 427 flow [2022-11-18 19:42:18,219 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) [2022-11-18 19:42:18,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:18,219 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] [2022-11-18 19:42:18,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:42:18,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2099763897, now seen corresponding path program 1 times [2022-11-18 19:42:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:18,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545436940] [2022-11-18 19:42:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:18,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:18,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:18,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545436940] [2022-11-18 19:42:18,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545436940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:18,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:18,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:42:18,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50231124] [2022-11-18 19:42:18,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:18,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:42:18,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:18,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:42:18,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:18,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-18 19:42:18,532 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) [2022-11-18 19:42:18,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:18,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-18 19:42:18,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:20,231 INFO L130 PetriNetUnfolder]: 3241/7272 cut-off events. [2022-11-18 19:42:20,231 INFO L131 PetriNetUnfolder]: For 3818/4292 co-relation queries the response was YES. [2022-11-18 19:42:20,266 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. [2022-11-18 19:42:20,395 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 115 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2022-11-18 19:42:20,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 228 transitions, 929 flow [2022-11-18 19:42:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:42:20,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:42:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 880 transitions. [2022-11-18 19:42:20,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7712532865907099 [2022-11-18 19:42:20,400 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 880 transitions. [2022-11-18 19:42:20,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 880 transitions. [2022-11-18 19:42:20,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:20,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 880 transitions. [2022-11-18 19:42:20,404 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) [2022-11-18 19:42:20,408 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) [2022-11-18 19:42:20,410 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) [2022-11-18 19:42:20,410 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 427 flow. Second operand 7 states and 880 transitions. [2022-11-18 19:42:20,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 228 transitions, 929 flow [2022-11-18 19:42:20,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 918 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:42:20,425 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 502 flow [2022-11-18 19:42:20,426 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} [2022-11-18 19:42:20,427 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 12 predicate places. [2022-11-18 19:42:20,427 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 502 flow [2022-11-18 19:42:20,428 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) [2022-11-18 19:42:20,428 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:20,429 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] [2022-11-18 19:42:20,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:42:20,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2099763898, now seen corresponding path program 1 times [2022-11-18 19:42:20,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:20,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994230835] [2022-11-18 19:42:20,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:20,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994230835] [2022-11-18 19:42:20,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994230835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:20,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:20,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:20,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163341005] [2022-11-18 19:42:20,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:20,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:20,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:20,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:20,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:20,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-18 19:42:20,589 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) [2022-11-18 19:42:20,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:20,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-18 19:42:20,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:22,168 INFO L130 PetriNetUnfolder]: 3002/6643 cut-off events. [2022-11-18 19:42:22,168 INFO L131 PetriNetUnfolder]: For 4592/5056 co-relation queries the response was YES. [2022-11-18 19:42:22,205 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. [2022-11-18 19:42:22,252 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 69 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2022-11-18 19:42:22,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 175 transitions, 713 flow [2022-11-18 19:42:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:42:22,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 746 transitions. [2022-11-18 19:42:22,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7627811860940695 [2022-11-18 19:42:22,258 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 746 transitions. [2022-11-18 19:42:22,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 746 transitions. [2022-11-18 19:42:22,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:22,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 746 transitions. [2022-11-18 19:42:22,265 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) [2022-11-18 19:42:22,269 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) [2022-11-18 19:42:22,272 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) [2022-11-18 19:42:22,273 INFO L175 Difference]: Start difference. First operand has 160 places, 156 transitions, 502 flow. Second operand 6 states and 746 transitions. [2022-11-18 19:42:22,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 175 transitions, 713 flow [2022-11-18 19:42:22,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 175 transitions, 692 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:42:22,303 INFO L231 Difference]: Finished difference. Result has 159 places, 154 transitions, 485 flow [2022-11-18 19:42:22,303 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} [2022-11-18 19:42:22,305 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 11 predicate places. [2022-11-18 19:42:22,306 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 154 transitions, 485 flow [2022-11-18 19:42:22,306 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) [2022-11-18 19:42:22,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:22,307 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] [2022-11-18 19:42:22,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:42:22,307 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:22,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:22,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1008298471, now seen corresponding path program 1 times [2022-11-18 19:42:22,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:22,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579449894] [2022-11-18 19:42:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:22,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:23,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:23,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579449894] [2022-11-18 19:42:23,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579449894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:23,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:23,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:42:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985029873] [2022-11-18 19:42:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:23,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:42:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:42:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:42:23,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-18 19:42:23,230 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) [2022-11-18 19:42:23,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:23,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-18 19:42:23,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:26,020 INFO L130 PetriNetUnfolder]: 7897/15008 cut-off events. [2022-11-18 19:42:26,021 INFO L131 PetriNetUnfolder]: For 10396/10685 co-relation queries the response was YES. [2022-11-18 19:42:26,093 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. [2022-11-18 19:42:26,205 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 146 selfloop transitions, 30 changer transitions 0/263 dead transitions. [2022-11-18 19:42:26,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 263 transitions, 1255 flow [2022-11-18 19:42:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:42:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-11-18 19:42:26,211 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7266530334014997 [2022-11-18 19:42:26,211 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-11-18 19:42:26,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-11-18 19:42:26,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:26,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-11-18 19:42:26,217 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) [2022-11-18 19:42:26,222 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) [2022-11-18 19:42:26,223 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) [2022-11-18 19:42:26,224 INFO L175 Difference]: Start difference. First operand has 159 places, 154 transitions, 485 flow. Second operand 9 states and 1066 transitions. [2022-11-18 19:42:26,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 263 transitions, 1255 flow [2022-11-18 19:42:26,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 263 transitions, 1241 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:42:26,252 INFO L231 Difference]: Finished difference. Result has 167 places, 176 transitions, 715 flow [2022-11-18 19:42:26,253 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} [2022-11-18 19:42:26,257 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 19 predicate places. [2022-11-18 19:42:26,258 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 176 transitions, 715 flow [2022-11-18 19:42:26,259 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) [2022-11-18 19:42:26,259 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:26,259 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] [2022-11-18 19:42:26,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:42:26,260 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:26,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:26,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1047882498, now seen corresponding path program 1 times [2022-11-18 19:42:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:26,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90741908] [2022-11-18 19:42:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:26,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:26,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90741908] [2022-11-18 19:42:26,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90741908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:26,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:26,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075520733] [2022-11-18 19:42:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:26,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:26,518 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-18 19:42:26,519 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) [2022-11-18 19:42:26,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:26,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-18 19:42:26,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:29,631 INFO L130 PetriNetUnfolder]: 6581/13195 cut-off events. [2022-11-18 19:42:29,631 INFO L131 PetriNetUnfolder]: For 19155/19418 co-relation queries the response was YES. [2022-11-18 19:42:29,698 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. [2022-11-18 19:42:29,796 INFO L137 encePairwiseOnDemand]: 155/163 looper letters, 108 selfloop transitions, 8 changer transitions 0/207 dead transitions. [2022-11-18 19:42:29,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 207 transitions, 1134 flow [2022-11-18 19:42:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:42:29,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:42:29,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 731 transitions. [2022-11-18 19:42:29,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7474437627811861 [2022-11-18 19:42:29,801 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 731 transitions. [2022-11-18 19:42:29,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 731 transitions. [2022-11-18 19:42:29,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:29,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 731 transitions. [2022-11-18 19:42:29,806 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) [2022-11-18 19:42:29,809 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) [2022-11-18 19:42:29,809 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) [2022-11-18 19:42:29,810 INFO L175 Difference]: Start difference. First operand has 167 places, 176 transitions, 715 flow. Second operand 6 states and 731 transitions. [2022-11-18 19:42:29,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 207 transitions, 1134 flow [2022-11-18 19:42:29,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 207 transitions, 1108 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 19:42:29,878 INFO L231 Difference]: Finished difference. Result has 169 places, 177 transitions, 719 flow [2022-11-18 19:42:29,878 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} [2022-11-18 19:42:29,881 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 21 predicate places. [2022-11-18 19:42:29,882 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 177 transitions, 719 flow [2022-11-18 19:42:29,882 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) [2022-11-18 19:42:29,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:29,883 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:42:29,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:42:29,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash -713100683, now seen corresponding path program 1 times [2022-11-18 19:42:29,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:29,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416277381] [2022-11-18 19:42:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:30,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416277381] [2022-11-18 19:42:30,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416277381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:30,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:30,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:42:30,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584583982] [2022-11-18 19:42:30,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:30,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:42:30,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:30,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:42:30,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:42:30,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-18 19:42:30,737 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) [2022-11-18 19:42:30,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:30,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-18 19:42:30,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:34,642 INFO L130 PetriNetUnfolder]: 10947/21160 cut-off events. [2022-11-18 19:42:34,642 INFO L131 PetriNetUnfolder]: For 29951/30277 co-relation queries the response was YES. [2022-11-18 19:42:34,741 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. [2022-11-18 19:42:34,910 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 164 selfloop transitions, 45 changer transitions 0/296 dead transitions. [2022-11-18 19:42:34,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 296 transitions, 1767 flow [2022-11-18 19:42:34,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:42:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:42:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 948 transitions. [2022-11-18 19:42:34,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7269938650306749 [2022-11-18 19:42:34,928 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 948 transitions. [2022-11-18 19:42:34,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 948 transitions. [2022-11-18 19:42:34,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:34,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 948 transitions. [2022-11-18 19:42:34,933 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) [2022-11-18 19:42:34,951 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) [2022-11-18 19:42:34,952 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) [2022-11-18 19:42:34,952 INFO L175 Difference]: Start difference. First operand has 169 places, 177 transitions, 719 flow. Second operand 8 states and 948 transitions. [2022-11-18 19:42:34,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 296 transitions, 1767 flow [2022-11-18 19:42:35,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 296 transitions, 1752 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:42:35,051 INFO L231 Difference]: Finished difference. Result has 176 places, 205 transitions, 1118 flow [2022-11-18 19:42:35,051 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} [2022-11-18 19:42:35,053 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 28 predicate places. [2022-11-18 19:42:35,053 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 205 transitions, 1118 flow [2022-11-18 19:42:35,054 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) [2022-11-18 19:42:35,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:35,055 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] [2022-11-18 19:42:35,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:42:35,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:35,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2035390406, now seen corresponding path program 1 times [2022-11-18 19:42:35,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:35,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221552490] [2022-11-18 19:42:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:35,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:35,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221552490] [2022-11-18 19:42:35,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221552490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:35,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:35,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:42:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457485501] [2022-11-18 19:42:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:35,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:42:35,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:42:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:42:35,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-18 19:42:35,312 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) [2022-11-18 19:42:35,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:35,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-18 19:42:35,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:39,180 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]) [2022-11-18 19:42:39,181 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,181 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,181 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,182 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,182 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][187], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1), 272#true]) [2022-11-18 19:42:39,182 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,183 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,183 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,183 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,185 INFO L381 tUnfolder$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)]) [2022-11-18 19:42:39,185 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,185 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,186 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,186 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,186 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [120#L192-2true, Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-18 19:42:39,186 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,187 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,187 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,187 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,189 INFO L381 tUnfolder$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)]) [2022-11-18 19:42:39,189 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,189 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,190 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,190 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,190 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 205#(<= ~i1~0 0), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-18 19:42:39,191 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,191 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,191 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,191 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:39,309 INFO L130 PetriNetUnfolder]: 10052/21651 cut-off events. [2022-11-18 19:42:39,309 INFO L131 PetriNetUnfolder]: For 59933/64679 co-relation queries the response was YES. [2022-11-18 19:42:39,670 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. [2022-11-18 19:42:39,829 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 157 selfloop transitions, 17 changer transitions 0/305 dead transitions. [2022-11-18 19:42:39,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 2099 flow [2022-11-18 19:42:39,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:42:39,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:42:39,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2022-11-18 19:42:39,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651183172655566 [2022-11-18 19:42:39,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2022-11-18 19:42:39,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2022-11-18 19:42:39,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:39,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2022-11-18 19:42:39,846 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) [2022-11-18 19:42:39,849 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) [2022-11-18 19:42:39,850 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) [2022-11-18 19:42:39,851 INFO L175 Difference]: Start difference. First operand has 176 places, 205 transitions, 1118 flow. Second operand 7 states and 873 transitions. [2022-11-18 19:42:39,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 2099 flow [2022-11-18 19:42:39,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 305 transitions, 2089 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-18 19:42:39,980 INFO L231 Difference]: Finished difference. Result has 183 places, 210 transitions, 1198 flow [2022-11-18 19:42:39,980 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} [2022-11-18 19:42:39,983 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 35 predicate places. [2022-11-18 19:42:39,984 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 210 transitions, 1198 flow [2022-11-18 19:42:39,984 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) [2022-11-18 19:42:39,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:39,985 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] [2022-11-18 19:42:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:42:39,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:39,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2035390407, now seen corresponding path program 1 times [2022-11-18 19:42:39,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:39,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070832569] [2022-11-18 19:42:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:39,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:40,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:40,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070832569] [2022-11-18 19:42:40,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070832569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:40,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:40,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:42:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044674557] [2022-11-18 19:42:40,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:40,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:42:40,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:40,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:42:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:42:40,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-18 19:42:40,121 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) [2022-11-18 19:42:40,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:40,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-18 19:42:40,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:43,930 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))]) [2022-11-18 19:42:43,930 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,930 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,931 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,931 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,931 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 277#(<= ~i2~0 0), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-18 19:42:43,931 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,931 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,931 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,931 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,933 INFO L381 tUnfolder$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))]) [2022-11-18 19:42:43,933 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,933 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,933 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,933 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,933 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-18 19:42:43,934 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,934 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,934 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,934 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,936 INFO L381 tUnfolder$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))]) [2022-11-18 19:42:43,936 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,936 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,937 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,937 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,937 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), 277#(<= ~i2~0 0), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), 264#(<= ~n1~0 1), Black: 276#(<= ~i~0 0), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0)), 120#L192-2true, thread3Thread1of1ForFork2InUse, Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0))]) [2022-11-18 19:42:43,937 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,938 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,938 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:43,938 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-18 19:42:44,043 INFO L130 PetriNetUnfolder]: 8863/19351 cut-off events. [2022-11-18 19:42:44,044 INFO L131 PetriNetUnfolder]: For 57477/61649 co-relation queries the response was YES. [2022-11-18 19:42:44,210 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. [2022-11-18 19:42:44,316 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 101 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-11-18 19:42:44,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 239 transitions, 1606 flow [2022-11-18 19:42:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:42:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:42:44,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2022-11-18 19:42:44,319 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7717791411042945 [2022-11-18 19:42:44,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2022-11-18 19:42:44,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2022-11-18 19:42:44,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:44,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2022-11-18 19:42:44,323 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) [2022-11-18 19:42:44,325 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) [2022-11-18 19:42:44,325 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) [2022-11-18 19:42:44,326 INFO L175 Difference]: Start difference. First operand has 183 places, 210 transitions, 1198 flow. Second operand 5 states and 629 transitions. [2022-11-18 19:42:44,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 239 transitions, 1606 flow [2022-11-18 19:42:44,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 239 transitions, 1583 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:42:44,809 INFO L231 Difference]: Finished difference. Result has 181 places, 208 transitions, 1179 flow [2022-11-18 19:42:44,810 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} [2022-11-18 19:42:44,811 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 33 predicate places. [2022-11-18 19:42:44,811 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 208 transitions, 1179 flow [2022-11-18 19:42:44,812 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) [2022-11-18 19:42:44,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:44,812 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] [2022-11-18 19:42:44,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:42:44,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:44,813 INFO L85 PathProgramCache]: Analyzing trace with hash 814500919, now seen corresponding path program 1 times [2022-11-18 19:42:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:44,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514497439] [2022-11-18 19:42:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:45,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:45,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514497439] [2022-11-18 19:42:45,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514497439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:45,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:45,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:42:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61703344] [2022-11-18 19:42:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:45,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:42:45,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:42:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:42:45,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-18 19:42:45,388 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) [2022-11-18 19:42:45,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:45,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-18 19:42:45,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:42:51,387 INFO L130 PetriNetUnfolder]: 15066/30063 cut-off events. [2022-11-18 19:42:51,387 INFO L131 PetriNetUnfolder]: For 83964/84390 co-relation queries the response was YES. [2022-11-18 19:42:51,556 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. [2022-11-18 19:42:51,992 INFO L137 encePairwiseOnDemand]: 147/163 looper letters, 214 selfloop transitions, 54 changer transitions 2/358 dead transitions. [2022-11-18 19:42:51,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 358 transitions, 2794 flow [2022-11-18 19:42:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:42:51,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:42:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1052 transitions. [2022-11-18 19:42:52,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7171097477845945 [2022-11-18 19:42:52,012 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1052 transitions. [2022-11-18 19:42:52,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1052 transitions. [2022-11-18 19:42:52,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:42:52,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1052 transitions. [2022-11-18 19:42:52,016 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) [2022-11-18 19:42:52,020 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) [2022-11-18 19:42:52,021 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) [2022-11-18 19:42:52,021 INFO L175 Difference]: Start difference. First operand has 181 places, 208 transitions, 1179 flow. Second operand 9 states and 1052 transitions. [2022-11-18 19:42:52,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 358 transitions, 2794 flow [2022-11-18 19:42:52,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 358 transitions, 2780 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:42:52,391 INFO L231 Difference]: Finished difference. Result has 191 places, 248 transitions, 1870 flow [2022-11-18 19:42:52,391 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} [2022-11-18 19:42:52,392 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 43 predicate places. [2022-11-18 19:42:52,393 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 248 transitions, 1870 flow [2022-11-18 19:42:52,393 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) [2022-11-18 19:42:52,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:42:52,394 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] [2022-11-18 19:42:52,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:42:52,394 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:42:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:42:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash 955634871, now seen corresponding path program 1 times [2022-11-18 19:42:52,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:42:52,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223336340] [2022-11-18 19:42:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:42:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:42:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:42:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:42:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:42:53,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223336340] [2022-11-18 19:42:53,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223336340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:42:53,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:42:53,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:42:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199104678] [2022-11-18 19:42:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:42:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:42:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:42:53,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:42:53,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:42:53,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-18 19:42:53,028 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) [2022-11-18 19:42:53,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:42:53,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-18 19:42:53,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:00,866 INFO L130 PetriNetUnfolder]: 18585/37025 cut-off events. [2022-11-18 19:43:00,866 INFO L131 PetriNetUnfolder]: For 138893/139498 co-relation queries the response was YES. [2022-11-18 19:43:01,105 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. [2022-11-18 19:43:01,269 INFO L137 encePairwiseOnDemand]: 149/163 looper letters, 235 selfloop transitions, 51 changer transitions 0/374 dead transitions. [2022-11-18 19:43:01,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 374 transitions, 3447 flow [2022-11-18 19:43:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:43:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:43:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 941 transitions. [2022-11-18 19:43:01,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7216257668711656 [2022-11-18 19:43:01,274 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 941 transitions. [2022-11-18 19:43:01,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 941 transitions. [2022-11-18 19:43:01,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:01,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 941 transitions. [2022-11-18 19:43:01,278 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) [2022-11-18 19:43:01,282 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) [2022-11-18 19:43:01,282 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) [2022-11-18 19:43:01,283 INFO L175 Difference]: Start difference. First operand has 191 places, 248 transitions, 1870 flow. Second operand 8 states and 941 transitions. [2022-11-18 19:43:01,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 374 transitions, 3447 flow [2022-11-18 19:43:01,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 374 transitions, 3435 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-18 19:43:01,795 INFO L231 Difference]: Finished difference. Result has 199 places, 264 transitions, 2225 flow [2022-11-18 19:43:01,796 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} [2022-11-18 19:43:01,796 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 51 predicate places. [2022-11-18 19:43:01,797 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 264 transitions, 2225 flow [2022-11-18 19:43:01,797 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) [2022-11-18 19:43:01,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:01,798 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] [2022-11-18 19:43:01,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:43:01,798 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:43:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2079312951, now seen corresponding path program 2 times [2022-11-18 19:43:01,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:01,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73475720] [2022-11-18 19:43:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:01,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:01,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:03,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:03,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73475720] [2022-11-18 19:43:03,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73475720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:03,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:03,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:43:03,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162412151] [2022-11-18 19:43:03,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:03,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:43:03,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:03,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:43:03,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:43:03,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-18 19:43:03,030 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) [2022-11-18 19:43:03,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:03,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-18 19:43:03,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:43:12,409 INFO L130 PetriNetUnfolder]: 21184/42000 cut-off events. [2022-11-18 19:43:12,409 INFO L131 PetriNetUnfolder]: For 183517/184090 co-relation queries the response was YES. [2022-11-18 19:43:12,721 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. [2022-11-18 19:43:12,950 INFO L137 encePairwiseOnDemand]: 148/163 looper letters, 258 selfloop transitions, 77 changer transitions 0/423 dead transitions. [2022-11-18 19:43:12,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 423 transitions, 4417 flow [2022-11-18 19:43:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:43:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:43:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2022-11-18 19:43:12,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7123381049761418 [2022-11-18 19:43:12,956 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2022-11-18 19:43:12,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2022-11-18 19:43:12,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:43:12,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2022-11-18 19:43:12,961 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) [2022-11-18 19:43:12,965 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) [2022-11-18 19:43:12,966 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) [2022-11-18 19:43:12,966 INFO L175 Difference]: Start difference. First operand has 199 places, 264 transitions, 2225 flow. Second operand 9 states and 1045 transitions. [2022-11-18 19:43:12,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 423 transitions, 4417 flow [2022-11-18 19:43:14,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 423 transitions, 4398 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-18 19:43:14,367 INFO L231 Difference]: Finished difference. Result has 210 places, 316 transitions, 3197 flow [2022-11-18 19:43:14,368 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} [2022-11-18 19:43:14,368 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 62 predicate places. [2022-11-18 19:43:14,368 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 316 transitions, 3197 flow [2022-11-18 19:43:14,369 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) [2022-11-18 19:43:14,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:43:14,370 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] [2022-11-18 19:43:14,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:43:14,370 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-18 19:43:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:43:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1487030583, now seen corresponding path program 1 times [2022-11-18 19:43:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:43:14,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51795341] [2022-11-18 19:43:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:43:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:43:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:43:15,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:43:15,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:43:15,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51795341] [2022-11-18 19:43:15,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51795341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:43:15,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:43:15,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:43:15,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416981018] [2022-11-18 19:43:15,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:43:15,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:43:15,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:43:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:43:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:43:15,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-18 19:43:15,069 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) [2022-11-18 19:43:15,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:43:15,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-18 19:43:15,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand