./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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-38b53e6 [2022-11-25 17:25:47,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:25:47,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:25:47,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:25:47,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:25:47,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:25:47,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:25:47,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:25:47,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:25:47,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:25:47,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:25:47,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:25:47,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:25:47,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:25:47,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:25:47,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:25:47,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:25:47,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:25:47,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:25:47,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:25:47,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:25:47,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:25:47,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:25:47,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:25:47,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:25:47,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:25:47,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:25:47,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:25:47,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:25:47,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:25:47,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:25:47,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:25:47,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:25:47,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:25:47,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:25:47,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:25:47,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:25:47,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:25:47,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:25:47,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:25:47,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:25:47,934 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:25:47,961 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:25:47,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:25:47,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:25:47,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:25:47,963 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:25:47,963 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:25:47,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:25:47,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:25:47,965 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:25:47,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:25:47,965 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:25:47,966 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:25:47,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:25:47,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:25:47,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:25:47,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:25:47,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:25:47,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:25:47,968 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:25:47,968 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:25:47,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:25:47,969 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:25:47,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:25:47,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:25:47,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:25:47,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:25:47,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:25:47,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:25:47,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:25:47,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:25:47,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:25:47,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:25:47,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:25:47,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:25:47,973 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:25:47,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:25:47,973 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-11-25 17:25:48,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:25:48,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:25:48,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:25:48,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:25:48,307 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:25:48,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-25 17:25:51,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:25:51,870 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:25:51,870 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-25 17:25:51,880 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/data/f0263ec61/1c4edba23b7c400f91fd300874286b44/FLAGa2f6dcda4 [2022-11-25 17:25:51,897 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/data/f0263ec61/1c4edba23b7c400f91fd300874286b44 [2022-11-25 17:25:51,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:25:51,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:25:51,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:25:51,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:25:51,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:25:51,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:25:51" (1/1) ... [2022-11-25 17:25:51,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3d1ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:51, skipping insertion in model container [2022-11-25 17:25:51,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:25:51" (1/1) ... [2022-11-25 17:25:51,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:25:51,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:25:52,162 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-25 17:25:52,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:25:52,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:25:52,223 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-25 17:25:52,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:25:52,248 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:25:52,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52 WrapperNode [2022-11-25 17:25:52,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:25:52,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:25:52,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:25:52,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:25:52,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,321 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-11-25 17:25:52,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:25:52,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:25:52,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:25:52,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:25:52,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:25:52,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:25:52,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:25:52,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:25:52,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (1/1) ... [2022-11-25 17:25:52,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:25:52,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:25:52,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:25:52,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:25:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:25:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:25:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:25:52,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:25:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:25:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:25:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:25:52,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:25:52,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:25:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:25:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:25:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:25:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:25:52,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:25:52,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:25:52,505 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:25:52,704 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:25:52,706 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:25:53,511 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:25:53,555 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:25:53,565 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:25:53,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:53 BoogieIcfgContainer [2022-11-25 17:25:53,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:25:53,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:25:53,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:25:53,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:25:53,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:25:51" (1/3) ... [2022-11-25 17:25:53,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bfd6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:25:53, skipping insertion in model container [2022-11-25 17:25:53,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:25:52" (2/3) ... [2022-11-25 17:25:53,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bfd6f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:25:53, skipping insertion in model container [2022-11-25 17:25:53,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:53" (3/3) ... [2022-11-25 17:25:53,587 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-11-25 17:25:53,599 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:25:53,624 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:25:53,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-25 17:25:53,624 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:25:53,867 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:25:53,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-11-25 17:25:54,187 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-11-25 17:25:54,188 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:25:54,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1307 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-11-25 17:25:54,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 456 transitions, 936 flow [2022-11-25 17:25:54,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 432 transitions, 879 flow [2022-11-25 17:25:54,243 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:25:54,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 432 transitions, 879 flow [2022-11-25 17:25:54,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 432 transitions, 879 flow [2022-11-25 17:25:54,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 432 transitions, 879 flow [2022-11-25 17:25:54,446 INFO L130 PetriNetUnfolder]: 31/432 cut-off events. [2022-11-25 17:25:54,447 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:25:54,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 432 events. 31/432 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1303 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-11-25 17:25:54,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2022-11-25 17:26:25,359 INFO L134 LiptonReduction]: Checked pairs total: 58215 [2022-11-25 17:26:25,359 INFO L136 LiptonReduction]: Total number of compositions: 564 [2022-11-25 17:26:25,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:26:25,389 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;@4506e1c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:26:25,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-25 17:26:25,393 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:26:25,394 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:26:25,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:25,395 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:26:25,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:25,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 61331, now seen corresponding path program 1 times [2022-11-25 17:26:25,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:25,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118211839] [2022-11-25 17:26:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:25,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:25,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118211839] [2022-11-25 17:26:25,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118211839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:25,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:25,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:26:25,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895794262] [2022-11-25 17:26:25,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:25,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:25,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:25,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1020 [2022-11-25 17:26:25,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:25,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:25,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1020 [2022-11-25 17:26:25,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:28,147 INFO L130 PetriNetUnfolder]: 6211/8841 cut-off events. [2022-11-25 17:26:28,147 INFO L131 PetriNetUnfolder]: For 460/460 co-relation queries the response was YES. [2022-11-25 17:26:28,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 8841 events. 6211/8841 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46921 event pairs, 5306 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 8144. Up to 4423 conditions per place. [2022-11-25 17:26:28,205 INFO L137 encePairwiseOnDemand]: 1007/1020 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-11-25 17:26:28,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 330 flow [2022-11-25 17:26:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:28,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2022-11-25 17:26:28,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4496732026143791 [2022-11-25 17:26:28,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2022-11-25 17:26:28,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2022-11-25 17:26:28,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:28,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2022-11-25 17:26:28,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:28,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:28,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:28,268 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1376 transitions. [2022-11-25 17:26:28,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 330 flow [2022-11-25 17:26:28,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 17:26:28,292 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 98 flow [2022-11-25 17:26:28,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2022-11-25 17:26:28,301 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-11-25 17:26:28,301 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 98 flow [2022-11-25 17:26:28,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:28,304 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:28,304 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:26:28,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:26:28,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:28,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1906978, now seen corresponding path program 1 times [2022-11-25 17:26:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:28,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68869064] [2022-11-25 17:26:28,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:28,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:28,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68869064] [2022-11-25 17:26:28,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68869064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:28,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:28,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179724423] [2022-11-25 17:26:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:28,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:28,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1020 [2022-11-25 17:26:28,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:28,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:28,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1020 [2022-11-25 17:26:28,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:30,362 INFO L130 PetriNetUnfolder]: 6211/8840 cut-off events. [2022-11-25 17:26:30,362 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-11-25 17:26:30,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 8840 events. 6211/8840 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46942 event pairs, 5306 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8979. Up to 8840 conditions per place. [2022-11-25 17:26:30,428 INFO L137 encePairwiseOnDemand]: 1018/1020 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-11-25 17:26:30,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 172 flow [2022-11-25 17:26:30,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1320 transitions. [2022-11-25 17:26:30,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2022-11-25 17:26:30,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1320 transitions. [2022-11-25 17:26:30,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1320 transitions. [2022-11-25 17:26:30,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:30,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1320 transitions. [2022-11-25 17:26:30,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:30,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:30,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:30,451 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 3 states and 1320 transitions. [2022-11-25 17:26:30,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 172 flow [2022-11-25 17:26:30,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:30,454 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 94 flow [2022-11-25 17:26:30,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2022-11-25 17:26:30,455 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-11-25 17:26:30,455 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 94 flow [2022-11-25 17:26:30,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:30,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:30,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:26:30,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:26:30,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1907029, now seen corresponding path program 1 times [2022-11-25 17:26:30,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:30,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338167398] [2022-11-25 17:26:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:30,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:30,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:30,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:30,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338167398] [2022-11-25 17:26:30,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338167398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:30,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110195932] [2022-11-25 17:26:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:30,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:30,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:30,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:30,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:26:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:30,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:26:30,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:30,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:30,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110195932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:30,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:30,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:26:30,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067384473] [2022-11-25 17:26:30,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:30,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:26:30,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:30,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:26:30,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:26:30,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1020 [2022-11-25 17:26:30,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 428.14285714285717) internal successors, (2997), 7 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:30,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:30,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1020 [2022-11-25 17:26:30,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:36,282 INFO L130 PetriNetUnfolder]: 15526/22097 cut-off events. [2022-11-25 17:26:36,283 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-11-25 17:26:36,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44891 conditions, 22097 events. 15526/22097 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 128917 event pairs, 13265 based on Foata normal form. 0/8536 useless extension candidates. Maximal degree in co-relation 44883. Up to 4422 conditions per place. [2022-11-25 17:26:36,415 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 177 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2022-11-25 17:26:36,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 182 transitions, 774 flow [2022-11-25 17:26:36,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:26:36,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:26:36,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2747 transitions. [2022-11-25 17:26:36,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4488562091503268 [2022-11-25 17:26:36,426 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2747 transitions. [2022-11-25 17:26:36,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2747 transitions. [2022-11-25 17:26:36,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:36,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2747 transitions. [2022-11-25 17:26:36,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 457.8333333333333) internal successors, (2747), 6 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:36,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1020.0) internal successors, (7140), 7 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:36,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1020.0) internal successors, (7140), 7 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:36,458 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 94 flow. Second operand 6 states and 2747 transitions. [2022-11-25 17:26:36,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 182 transitions, 774 flow [2022-11-25 17:26:36,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 182 transitions, 773 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:36,462 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 129 flow [2022-11-25 17:26:36,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2022-11-25 17:26:36,464 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-11-25 17:26:36,464 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 129 flow [2022-11-25 17:26:36,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 428.14285714285717) internal successors, (2997), 7 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:36,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:36,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:26:36,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:36,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:36,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1831044503, now seen corresponding path program 1 times [2022-11-25 17:26:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:36,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943623037] [2022-11-25 17:26:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:36,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:36,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:36,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943623037] [2022-11-25 17:26:36,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943623037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:36,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:36,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090996211] [2022-11-25 17:26:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:36,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:36,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:26:36,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:36,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:36,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:26:36,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:40,315 INFO L130 PetriNetUnfolder]: 12421/17679 cut-off events. [2022-11-25 17:26:40,315 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2022-11-25 17:26:40,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35933 conditions, 17679 events. 12421/17679 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 103435 event pairs, 10612 based on Foata normal form. 1/6832 useless extension candidates. Maximal degree in co-relation 35921. Up to 17679 conditions per place. [2022-11-25 17:26:40,448 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 40 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-11-25 17:26:40,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 213 flow [2022-11-25 17:26:40,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1318 transitions. [2022-11-25 17:26:40,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43071895424836604 [2022-11-25 17:26:40,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1318 transitions. [2022-11-25 17:26:40,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1318 transitions. [2022-11-25 17:26:40,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:40,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1318 transitions. [2022-11-25 17:26:40,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:40,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:40,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:40,477 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 129 flow. Second operand 3 states and 1318 transitions. [2022-11-25 17:26:40,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 213 flow [2022-11-25 17:26:40,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 203 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:40,481 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 127 flow [2022-11-25 17:26:40,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2022-11-25 17:26:40,484 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2022-11-25 17:26:40,484 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 127 flow [2022-11-25 17:26:40,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:40,486 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:40,486 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:26:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:26:40,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash 980139432, now seen corresponding path program 1 times [2022-11-25 17:26:40,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:40,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978597724] [2022-11-25 17:26:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:40,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:40,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:40,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978597724] [2022-11-25 17:26:40,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978597724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:40,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304119268] [2022-11-25 17:26:40,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:40,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:40,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:40,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:40,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:26:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:40,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:26:40,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:40,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:40,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304119268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:40,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:40,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:26:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069099886] [2022-11-25 17:26:40,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:40,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:26:40,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:40,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:26:40,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:26:40,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1020 [2022-11-25 17:26:40,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 425.7142857142857) internal successors, (2980), 7 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:40,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:40,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1020 [2022-11-25 17:26:40,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:42,288 INFO L130 PetriNetUnfolder]: 6211/8843 cut-off events. [2022-11-25 17:26:42,289 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-11-25 17:26:42,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17989 conditions, 8843 events. 6211/8843 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47066 event pairs, 5306 based on Foata normal form. 2/3421 useless extension candidates. Maximal degree in co-relation 17975. Up to 8840 conditions per place. [2022-11-25 17:26:42,366 INFO L137 encePairwiseOnDemand]: 1016/1020 looper letters, 37 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2022-11-25 17:26:42,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 211 flow [2022-11-25 17:26:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:26:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:26:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2163 transitions. [2022-11-25 17:26:42,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42411764705882354 [2022-11-25 17:26:42,377 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2163 transitions. [2022-11-25 17:26:42,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2163 transitions. [2022-11-25 17:26:42,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:42,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2163 transitions. [2022-11-25 17:26:42,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 432.6) internal successors, (2163), 5 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:42,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1020.0) internal successors, (6120), 6 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:42,402 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1020.0) internal successors, (6120), 6 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:42,402 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 127 flow. Second operand 5 states and 2163 transitions. [2022-11-25 17:26:42,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 211 flow [2022-11-25 17:26:42,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 203 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:26:42,405 INFO L231 Difference]: Finished difference. Result has 56 places, 42 transitions, 138 flow [2022-11-25 17:26:42,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=56, PETRI_TRANSITIONS=42} [2022-11-25 17:26:42,406 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2022-11-25 17:26:42,407 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 42 transitions, 138 flow [2022-11-25 17:26:42,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 425.7142857142857) internal successors, (2980), 7 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:42,409 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:42,409 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:26:42,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:26:42,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:42,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:42,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash 981883782, now seen corresponding path program 2 times [2022-11-25 17:26:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:42,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469821013] [2022-11-25 17:26:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:26:42,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:42,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469821013] [2022-11-25 17:26:42,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469821013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:42,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034636142] [2022-11-25 17:26:42,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:26:42,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:42,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:42,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:42,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:26:42,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:26:42,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:26:42,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:26:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 17:26:42,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:26:42,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034636142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:42,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:26:42,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 17:26:42,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114542105] [2022-11-25 17:26:42,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:42,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:42,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:26:43,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1020 [2022-11-25 17:26:43,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 42 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:43,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:43,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1020 [2022-11-25 17:26:43,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:44,791 INFO L130 PetriNetUnfolder]: 6211/8842 cut-off events. [2022-11-25 17:26:44,791 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-25 17:26:44,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17991 conditions, 8842 events. 6211/8842 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47030 event pairs, 5306 based on Foata normal form. 1/3419 useless extension candidates. Maximal degree in co-relation 17975. Up to 8842 conditions per place. [2022-11-25 17:26:44,850 INFO L137 encePairwiseOnDemand]: 1018/1020 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-11-25 17:26:44,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 41 transitions, 207 flow [2022-11-25 17:26:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1322 transitions. [2022-11-25 17:26:44,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4320261437908497 [2022-11-25 17:26:44,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1322 transitions. [2022-11-25 17:26:44,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1322 transitions. [2022-11-25 17:26:44,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:44,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1322 transitions. [2022-11-25 17:26:44,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.6666666666667) internal successors, (1322), 3 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:44,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:44,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:44,891 INFO L175 Difference]: Start difference. First operand has 56 places, 42 transitions, 138 flow. Second operand 3 states and 1322 transitions. [2022-11-25 17:26:44,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 41 transitions, 207 flow [2022-11-25 17:26:44,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 189 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-25 17:26:44,893 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 109 flow [2022-11-25 17:26:44,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2022-11-25 17:26:44,895 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2022-11-25 17:26:44,895 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 109 flow [2022-11-25 17:26:44,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:44,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:44,898 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-25 17:26:44,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:26:45,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:45,104 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1304100934, now seen corresponding path program 1 times [2022-11-25 17:26:45,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:45,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344513979] [2022-11-25 17:26:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:45,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:45,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344513979] [2022-11-25 17:26:45,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344513979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:45,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:45,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367511740] [2022-11-25 17:26:45,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:45,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:45,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:45,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:45,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:45,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:26:45,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:45,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:45,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:26:45,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:47,144 INFO L130 PetriNetUnfolder]: 8171/11674 cut-off events. [2022-11-25 17:26:47,144 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-25 17:26:47,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23711 conditions, 11674 events. 8171/11674 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 66106 event pairs, 5306 based on Foata normal form. 0/4734 useless extension candidates. Maximal degree in co-relation 23699. Up to 8843 conditions per place. [2022-11-25 17:26:47,223 INFO L137 encePairwiseOnDemand]: 1013/1020 looper letters, 66 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2022-11-25 17:26:47,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 304 flow [2022-11-25 17:26:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:47,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:47,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1347 transitions. [2022-11-25 17:26:47,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44019607843137254 [2022-11-25 17:26:47,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1347 transitions. [2022-11-25 17:26:47,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1347 transitions. [2022-11-25 17:26:47,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:47,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1347 transitions. [2022-11-25 17:26:47,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:47,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:47,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:47,243 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 109 flow. Second operand 3 states and 1347 transitions. [2022-11-25 17:26:47,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 304 flow [2022-11-25 17:26:47,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:47,245 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 128 flow [2022-11-25 17:26:47,246 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2022-11-25 17:26:47,246 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2022-11-25 17:26:47,247 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 128 flow [2022-11-25 17:26:47,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:47,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:47,248 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:47,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:26:47,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:47,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:47,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1772422220, now seen corresponding path program 1 times [2022-11-25 17:26:47,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:47,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553015464] [2022-11-25 17:26:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:47,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:47,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553015464] [2022-11-25 17:26:47,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553015464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:47,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:47,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549485703] [2022-11-25 17:26:47,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:47,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:47,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:47,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:26:47,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:47,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:47,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:26:47,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:48,900 INFO L130 PetriNetUnfolder]: 7463/10674 cut-off events. [2022-11-25 17:26:48,900 INFO L131 PetriNetUnfolder]: For 1648/1648 co-relation queries the response was YES. [2022-11-25 17:26:48,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24014 conditions, 10674 events. 7463/10674 cut-off events. For 1648/1648 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 58568 event pairs, 6422 based on Foata normal form. 0/5018 useless extension candidates. Maximal degree in co-relation 24001. Up to 10674 conditions per place. [2022-11-25 17:26:48,964 INFO L137 encePairwiseOnDemand]: 1018/1020 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2022-11-25 17:26:48,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 206 flow [2022-11-25 17:26:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1315 transitions. [2022-11-25 17:26:48,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4297385620915033 [2022-11-25 17:26:48,969 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1315 transitions. [2022-11-25 17:26:48,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1315 transitions. [2022-11-25 17:26:48,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:48,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1315 transitions. [2022-11-25 17:26:48,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:48,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:48,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:48,982 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 128 flow. Second operand 3 states and 1315 transitions. [2022-11-25 17:26:48,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 206 flow [2022-11-25 17:26:48,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:48,986 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 124 flow [2022-11-25 17:26:48,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-11-25 17:26:48,987 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2022-11-25 17:26:48,987 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 124 flow [2022-11-25 17:26:48,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:48,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:48,989 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:48,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:26:48,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:48,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1772422245, now seen corresponding path program 1 times [2022-11-25 17:26:48,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:48,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99814519] [2022-11-25 17:26:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:48,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:26:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:49,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99814519] [2022-11-25 17:26:49,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99814519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:49,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:49,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:26:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114649613] [2022-11-25 17:26:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:49,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:49,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1020 [2022-11-25 17:26:49,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:49,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:49,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1020 [2022-11-25 17:26:49,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:50,800 INFO L130 PetriNetUnfolder]: 5979/8570 cut-off events. [2022-11-25 17:26:50,800 INFO L131 PetriNetUnfolder]: For 938/938 co-relation queries the response was YES. [2022-11-25 17:26:50,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18997 conditions, 8570 events. 5979/8570 cut-off events. For 938/938 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 45311 event pairs, 5078 based on Foata normal form. 0/4278 useless extension candidates. Maximal degree in co-relation 18983. Up to 8570 conditions per place. [2022-11-25 17:26:50,850 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-11-25 17:26:50,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 196 flow [2022-11-25 17:26:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1320 transitions. [2022-11-25 17:26:50,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2022-11-25 17:26:50,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1320 transitions. [2022-11-25 17:26:50,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1320 transitions. [2022-11-25 17:26:50,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:50,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1320 transitions. [2022-11-25 17:26:50,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:50,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:50,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:50,872 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 124 flow. Second operand 3 states and 1320 transitions. [2022-11-25 17:26:50,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 196 flow [2022-11-25 17:26:50,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:50,875 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 119 flow [2022-11-25 17:26:50,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2022-11-25 17:26:50,876 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-11-25 17:26:50,876 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 119 flow [2022-11-25 17:26:50,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:50,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:50,878 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:50,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:26:50,878 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:50,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1772422195, now seen corresponding path program 1 times [2022-11-25 17:26:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:50,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856281511] [2022-11-25 17:26:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:51,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:51,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856281511] [2022-11-25 17:26:51,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856281511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:26:51,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271187764] [2022-11-25 17:26:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:51,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:26:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:26:51,025 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:26:51,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:26:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:51,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:26:51,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:26:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:51,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:26:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:51,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271187764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:26:51,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:26:51,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-25 17:26:51,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624395101] [2022-11-25 17:26:51,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:26:51,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:26:51,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:26:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:26:51,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:26:51,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 428.0) internal successors, (2568), 6 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:51,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:51,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:26:51,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:54,580 INFO L130 PetriNetUnfolder]: 9443/13578 cut-off events. [2022-11-25 17:26:54,580 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2022-11-25 17:26:54,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29670 conditions, 13578 events. 9443/13578 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 80241 event pairs, 3538 based on Foata normal form. 0/7182 useless extension candidates. Maximal degree in co-relation 29655. Up to 6067 conditions per place. [2022-11-25 17:26:54,674 INFO L137 encePairwiseOnDemand]: 1015/1020 looper letters, 112 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2022-11-25 17:26:54,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 116 transitions, 524 flow [2022-11-25 17:26:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:26:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:26:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2248 transitions. [2022-11-25 17:26:54,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4407843137254902 [2022-11-25 17:26:54,684 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2248 transitions. [2022-11-25 17:26:54,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2248 transitions. [2022-11-25 17:26:54,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:54,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2248 transitions. [2022-11-25 17:26:54,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 449.6) internal successors, (2248), 5 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:54,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1020.0) internal successors, (6120), 6 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:54,706 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1020.0) internal successors, (6120), 6 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:54,706 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 119 flow. Second operand 5 states and 2248 transitions. [2022-11-25 17:26:54,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 116 transitions, 524 flow [2022-11-25 17:26:54,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 116 transitions, 523 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:54,710 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 152 flow [2022-11-25 17:26:54,711 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2022-11-25 17:26:54,711 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2022-11-25 17:26:54,711 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 152 flow [2022-11-25 17:26:54,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 428.0) internal successors, (2568), 6 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:54,713 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:54,713 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:26:54,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 17:26:54,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:26:54,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:54,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:54,920 INFO L85 PathProgramCache]: Analyzing trace with hash 888542040, now seen corresponding path program 1 times [2022-11-25 17:26:54,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:54,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696049461] [2022-11-25 17:26:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:55,051 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:26:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:55,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696049461] [2022-11-25 17:26:55,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696049461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:55,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:55,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:26:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480091179] [2022-11-25 17:26:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:55,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:55,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:55,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:55,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:26:55,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:55,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:55,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:26:55,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:26:58,065 INFO L130 PetriNetUnfolder]: 11875/17114 cut-off events. [2022-11-25 17:26:58,065 INFO L131 PetriNetUnfolder]: For 9116/9116 co-relation queries the response was YES. [2022-11-25 17:26:58,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41564 conditions, 17114 events. 11875/17114 cut-off events. For 9116/9116 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 102040 event pairs, 8158 based on Foata normal form. 0/9634 useless extension candidates. Maximal degree in co-relation 41547. Up to 13579 conditions per place. [2022-11-25 17:26:58,166 INFO L137 encePairwiseOnDemand]: 1013/1020 looper letters, 64 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2022-11-25 17:26:58,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 380 flow [2022-11-25 17:26:58,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:26:58,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:26:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2022-11-25 17:26:58,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43758169934640523 [2022-11-25 17:26:58,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2022-11-25 17:26:58,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2022-11-25 17:26:58,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:26:58,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2022-11-25 17:26:58,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:58,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:58,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:58,185 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 152 flow. Second operand 3 states and 1339 transitions. [2022-11-25 17:26:58,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 380 flow [2022-11-25 17:26:58,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 368 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-25 17:26:58,192 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 166 flow [2022-11-25 17:26:58,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2022-11-25 17:26:58,193 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2022-11-25 17:26:58,193 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 166 flow [2022-11-25 17:26:58,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:58,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:26:58,194 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-25 17:26:58,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:26:58,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:26:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:26:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1804322156, now seen corresponding path program 1 times [2022-11-25 17:26:58,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:26:58,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673760389] [2022-11-25 17:26:58,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:26:58,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:26:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:26:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:26:58,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:26:58,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673760389] [2022-11-25 17:26:58,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673760389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:26:58,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:26:58,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:26:58,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660623073] [2022-11-25 17:26:58,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:26:58,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:26:58,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:26:58,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:26:58,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:26:58,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1020 [2022-11-25 17:26:58,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:26:58,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:26:58,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1020 [2022-11-25 17:26:58,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:00,634 INFO L130 PetriNetUnfolder]: 10009/14460 cut-off events. [2022-11-25 17:27:00,634 INFO L131 PetriNetUnfolder]: For 8040/8040 co-relation queries the response was YES. [2022-11-25 17:27:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37460 conditions, 14460 events. 10009/14460 cut-off events. For 8040/8040 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 82335 event pairs, 8680 based on Foata normal form. 0/9452 useless extension candidates. Maximal degree in co-relation 37441. Up to 14460 conditions per place. [2022-11-25 17:27:00,737 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2022-11-25 17:27:00,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 40 transitions, 234 flow [2022-11-25 17:27:00,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1318 transitions. [2022-11-25 17:27:00,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43071895424836604 [2022-11-25 17:27:00,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1318 transitions. [2022-11-25 17:27:00,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1318 transitions. [2022-11-25 17:27:00,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:00,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1318 transitions. [2022-11-25 17:27:00,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:00,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:00,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:00,753 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 166 flow. Second operand 3 states and 1318 transitions. [2022-11-25 17:27:00,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 40 transitions, 234 flow [2022-11-25 17:27:00,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 40 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:00,764 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 154 flow [2022-11-25 17:27:00,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2022-11-25 17:27:00,767 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2022-11-25 17:27:00,767 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 154 flow [2022-11-25 17:27:00,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:00,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:00,768 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-25 17:27:00,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:27:00,769 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:27:00,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:00,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1804322157, now seen corresponding path program 2 times [2022-11-25 17:27:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983515979] [2022-11-25 17:27:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:27:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:00,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983515979] [2022-11-25 17:27:00,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983515979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:00,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:00,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:27:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413048788] [2022-11-25 17:27:00,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:00,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:00,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:00,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:00,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1020 [2022-11-25 17:27:00,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:00,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:00,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1020 [2022-11-25 17:27:00,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:02,879 INFO L130 PetriNetUnfolder]: 8299/12026 cut-off events. [2022-11-25 17:27:02,879 INFO L131 PetriNetUnfolder]: For 6394/6394 co-relation queries the response was YES. [2022-11-25 17:27:02,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30135 conditions, 12026 events. 8299/12026 cut-off events. For 6394/6394 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 66554 event pairs, 7126 based on Foata normal form. 0/8330 useless extension candidates. Maximal degree in co-relation 30115. Up to 12026 conditions per place. [2022-11-25 17:27:02,956 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-11-25 17:27:02,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 218 flow [2022-11-25 17:27:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:02,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1316 transitions. [2022-11-25 17:27:02,963 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4300653594771242 [2022-11-25 17:27:02,963 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1316 transitions. [2022-11-25 17:27:02,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1316 transitions. [2022-11-25 17:27:02,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:02,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1316 transitions. [2022-11-25 17:27:02,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:02,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:02,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:02,975 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 154 flow. Second operand 3 states and 1316 transitions. [2022-11-25 17:27:02,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 218 flow [2022-11-25 17:27:02,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 38 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:02,982 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 143 flow [2022-11-25 17:27:02,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2022-11-25 17:27:02,983 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2022-11-25 17:27:02,983 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 143 flow [2022-11-25 17:27:02,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:02,984 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:02,984 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-25 17:27:02,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:27:02,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:27:02,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:02,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1804322154, now seen corresponding path program 1 times [2022-11-25 17:27:02,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:02,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131969843] [2022-11-25 17:27:02,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:02,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 17:27:03,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:03,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131969843] [2022-11-25 17:27:03,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131969843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:03,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:03,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:27:03,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315384115] [2022-11-25 17:27:03,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:03,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:03,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:03,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1020 [2022-11-25 17:27:03,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:03,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:03,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1020 [2022-11-25 17:27:03,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:04,943 INFO L130 PetriNetUnfolder]: 6663/9682 cut-off events. [2022-11-25 17:27:04,943 INFO L131 PetriNetUnfolder]: For 5470/5470 co-relation queries the response was YES. [2022-11-25 17:27:04,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23842 conditions, 9682 events. 6663/9682 cut-off events. For 5470/5470 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 51960 event pairs, 5638 based on Foata normal form. 228/7074 useless extension candidates. Maximal degree in co-relation 23821. Up to 9682 conditions per place. [2022-11-25 17:27:05,018 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-11-25 17:27:05,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 36 transitions, 205 flow [2022-11-25 17:27:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:05,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2022-11-25 17:27:05,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4294117647058823 [2022-11-25 17:27:05,022 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1314 transitions. [2022-11-25 17:27:05,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1314 transitions. [2022-11-25 17:27:05,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:05,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1314 transitions. [2022-11-25 17:27:05,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:05,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:05,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:05,032 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 143 flow. Second operand 3 states and 1314 transitions. [2022-11-25 17:27:05,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 36 transitions, 205 flow [2022-11-25 17:27:05,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 36 transitions, 196 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-25 17:27:05,039 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 126 flow [2022-11-25 17:27:05,040 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2022-11-25 17:27:05,040 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2022-11-25 17:27:05,040 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 126 flow [2022-11-25 17:27:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:05,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:05,041 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:27:05,042 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:27:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1775000942, now seen corresponding path program 1 times [2022-11-25 17:27:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:05,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820087998] [2022-11-25 17:27:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:05,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:27:05,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:05,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820087998] [2022-11-25 17:27:05,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820087998] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:27:05,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049064988] [2022-11-25 17:27:05,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:05,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:27:05,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:27:05,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:27:05,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:27:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:05,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:27:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:27:05,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:05,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049064988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:05,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:27:05,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-25 17:27:05,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116849330] [2022-11-25 17:27:05,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:05,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:05,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:05,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:05,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:27:05,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1020 [2022-11-25 17:27:05,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:05,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:05,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1020 [2022-11-25 17:27:05,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:06,610 INFO L130 PetriNetUnfolder]: 4973/7248 cut-off events. [2022-11-25 17:27:06,610 INFO L131 PetriNetUnfolder]: For 1836/1836 co-relation queries the response was YES. [2022-11-25 17:27:06,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17136 conditions, 7248 events. 4973/7248 cut-off events. For 1836/1836 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36923 event pairs, 4108 based on Foata normal form. 0/5468 useless extension candidates. Maximal degree in co-relation 17117. Up to 7248 conditions per place. [2022-11-25 17:27:06,664 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2022-11-25 17:27:06,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 34 transitions, 188 flow [2022-11-25 17:27:06,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1312 transitions. [2022-11-25 17:27:06,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4287581699346405 [2022-11-25 17:27:06,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1312 transitions. [2022-11-25 17:27:06,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1312 transitions. [2022-11-25 17:27:06,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:06,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1312 transitions. [2022-11-25 17:27:06,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.3333333333333) internal successors, (1312), 3 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:06,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:06,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:06,680 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 126 flow. Second operand 3 states and 1312 transitions. [2022-11-25 17:27:06,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 34 transitions, 188 flow [2022-11-25 17:27:06,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:06,684 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 121 flow [2022-11-25 17:27:06,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2022-11-25 17:27:06,685 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-11-25 17:27:06,685 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 121 flow [2022-11-25 17:27:06,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:06,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:06,686 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:06,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:27:06,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:27:06,894 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:27:06,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1775000902, now seen corresponding path program 1 times [2022-11-25 17:27:06,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:06,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782406112] [2022-11-25 17:27:06,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:06,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 17:27:06,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:06,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782406112] [2022-11-25 17:27:06,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782406112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:06,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:06,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:27:06,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824631277] [2022-11-25 17:27:06,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:06,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:06,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:06,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:06,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:07,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1020 [2022-11-25 17:27:07,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:07,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1020 [2022-11-25 17:27:07,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:07,912 INFO L130 PetriNetUnfolder]: 3527/5162 cut-off events. [2022-11-25 17:27:07,912 INFO L131 PetriNetUnfolder]: For 1352/1352 co-relation queries the response was YES. [2022-11-25 17:27:07,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12185 conditions, 5162 events. 3527/5162 cut-off events. For 1352/1352 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 24799 event pairs, 2814 based on Foata normal form. 0/4230 useless extension candidates. Maximal degree in co-relation 12165. Up to 5162 conditions per place. [2022-11-25 17:27:07,938 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2022-11-25 17:27:07,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 32 transitions, 179 flow [2022-11-25 17:27:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1310 transitions. [2022-11-25 17:27:07,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42810457516339867 [2022-11-25 17:27:07,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1310 transitions. [2022-11-25 17:27:07,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1310 transitions. [2022-11-25 17:27:07,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:07,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1310 transitions. [2022-11-25 17:27:07,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,955 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,955 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 121 flow. Second operand 3 states and 1310 transitions. [2022-11-25 17:27:07,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 32 transitions, 179 flow [2022-11-25 17:27:07,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 32 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:07,958 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 116 flow [2022-11-25 17:27:07,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2022-11-25 17:27:07,959 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2022-11-25 17:27:07,959 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 116 flow [2022-11-25 17:27:07,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:07,960 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:07,960 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:07,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:27:07,961 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:27:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1775000931, now seen corresponding path program 1 times [2022-11-25 17:27:07,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:07,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252034703] [2022-11-25 17:27:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:07,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:27:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252034703] [2022-11-25 17:27:08,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252034703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:08,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:08,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:27:08,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482812469] [2022-11-25 17:27:08,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:08,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:08,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:08,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:08,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:08,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:27:08,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:08,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:08,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:27:08,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:08,764 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2022-11-25 17:27:08,764 INFO L131 PetriNetUnfolder]: For 1220/1220 co-relation queries the response was YES. [2022-11-25 17:27:08,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10198 conditions, 4358 events. 2967/4358 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 20323 event pairs, 2326 based on Foata normal form. 0/3774 useless extension candidates. Maximal degree in co-relation 10177. Up to 4358 conditions per place. [2022-11-25 17:27:08,786 INFO L137 encePairwiseOnDemand]: 1018/1020 looper letters, 29 selfloop transitions, 1 changer transitions 1/31 dead transitions. [2022-11-25 17:27:08,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 31 transitions, 174 flow [2022-11-25 17:27:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:08,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1302 transitions. [2022-11-25 17:27:08,792 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42549019607843136 [2022-11-25 17:27:08,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1302 transitions. [2022-11-25 17:27:08,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1302 transitions. [2022-11-25 17:27:08,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:08,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1302 transitions. [2022-11-25 17:27:08,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 434.0) internal successors, (1302), 3 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:08,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:08,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:08,802 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 116 flow. Second operand 3 states and 1302 transitions. [2022-11-25 17:27:08,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 31 transitions, 174 flow [2022-11-25 17:27:08,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 31 transitions, 173 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:08,806 INFO L231 Difference]: Finished difference. Result has 49 places, 30 transitions, 111 flow [2022-11-25 17:27:08,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=49, PETRI_TRANSITIONS=30} [2022-11-25 17:27:08,807 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2022-11-25 17:27:08,807 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 30 transitions, 111 flow [2022-11-25 17:27:08,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:08,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:08,808 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:08,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:27:08,809 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:27:08,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:08,810 INFO L85 PathProgramCache]: Analyzing trace with hash -807650195, now seen corresponding path program 1 times [2022-11-25 17:27:08,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:08,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082515587] [2022-11-25 17:27:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:27:08,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:08,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082515587] [2022-11-25 17:27:08,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082515587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:08,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:27:08,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:27:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668250595] [2022-11-25 17:27:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:08,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:27:08,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:27:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:27:08,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:27:08,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 30 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:08,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:08,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:27:08,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:09,822 INFO L130 PetriNetUnfolder]: 2967/4358 cut-off events. [2022-11-25 17:27:09,822 INFO L131 PetriNetUnfolder]: For 1236/1236 co-relation queries the response was YES. [2022-11-25 17:27:09,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10199 conditions, 4358 events. 2967/4358 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 20676 event pairs, 1756 based on Foata normal form. 0/4066 useless extension candidates. Maximal degree in co-relation 10177. Up to 3425 conditions per place. [2022-11-25 17:27:09,843 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 44 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2022-11-25 17:27:09,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 253 flow [2022-11-25 17:27:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:27:09,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:27:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1313 transitions. [2022-11-25 17:27:09,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4290849673202614 [2022-11-25 17:27:09,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1313 transitions. [2022-11-25 17:27:09,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1313 transitions. [2022-11-25 17:27:09,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:09,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1313 transitions. [2022-11-25 17:27:09,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:09,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:09,855 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1020.0) internal successors, (4080), 4 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:09,855 INFO L175 Difference]: Start difference. First operand has 49 places, 30 transitions, 111 flow. Second operand 3 states and 1313 transitions. [2022-11-25 17:27:09,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 253 flow [2022-11-25 17:27:09,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:09,859 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 122 flow [2022-11-25 17:27:09,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2022-11-25 17:27:09,859 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-11-25 17:27:09,860 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 122 flow [2022-11-25 17:27:09,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:09,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:27:09,860 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:09,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:27:09,861 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-25 17:27:09,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:27:09,861 INFO L85 PathProgramCache]: Analyzing trace with hash 732649640, now seen corresponding path program 1 times [2022-11-25 17:27:09,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:27:09,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300893482] [2022-11-25 17:27:09,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:09,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:27:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:27:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:27:09,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300893482] [2022-11-25 17:27:09,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300893482] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:27:09,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002277563] [2022-11-25 17:27:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:27:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:27:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:27:09,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:27:09,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:27:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:27:10,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:27:10,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:27:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:27:10,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:27:10,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002277563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:27:10,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:27:10,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 17:27:10,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301449842] [2022-11-25 17:27:10,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:27:10,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:27:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:27:10,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:27:10,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:27:10,190 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1020 [2022-11-25 17:27:10,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 428.75) internal successors, (1715), 4 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:10,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:27:10,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1020 [2022-11-25 17:27:10,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:27:10,810 INFO L130 PetriNetUnfolder]: 2325/3424 cut-off events. [2022-11-25 17:27:10,810 INFO L131 PetriNetUnfolder]: For 1800/1800 co-relation queries the response was YES. [2022-11-25 17:27:10,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9244 conditions, 3424 events. 2325/3424 cut-off events. For 1800/1800 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15783 event pairs, 616 based on Foata normal form. 0/3424 useless extension candidates. Maximal degree in co-relation 9221. Up to 1265 conditions per place. [2022-11-25 17:27:10,821 INFO L137 encePairwiseOnDemand]: 1017/1020 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2022-11-25 17:27:10,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 334 flow [2022-11-25 17:27:10,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:27:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:27:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1749 transitions. [2022-11-25 17:27:10,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42867647058823527 [2022-11-25 17:27:10,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1749 transitions. [2022-11-25 17:27:10,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1749 transitions. [2022-11-25 17:27:10,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:27:10,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1749 transitions. [2022-11-25 17:27:10,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.25) internal successors, (1749), 4 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:10,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1020.0) internal successors, (5100), 5 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:10,835 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1020.0) internal successors, (5100), 5 states have internal predecessors, (5100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:10,835 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 122 flow. Second operand 4 states and 1749 transitions. [2022-11-25 17:27:10,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 334 flow [2022-11-25 17:27:10,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 330 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:27:10,847 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2022-11-25 17:27:10,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1020, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2022-11-25 17:27:10,848 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2022-11-25 17:27:10,848 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2022-11-25 17:27:10,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 428.75) internal successors, (1715), 4 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:27:10,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2022-11-25 17:27:10,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2022-11-25 17:27:10,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2022-11-25 17:27:10,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2022-11-25 17:27:10,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2022-11-25 17:27:10,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2022-11-25 17:27:10,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2022-11-25 17:27:10,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2022-11-25 17:27:10,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2022-11-25 17:27:10,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2022-11-25 17:27:10,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2022-11-25 17:27:10,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2022-11-25 17:27:10,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2022-11-25 17:27:10,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2022-11-25 17:27:10,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2022-11-25 17:27:10,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2022-11-25 17:27:10,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2022-11-25 17:27:10,854 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2022-11-25 17:27:10,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2022-11-25 17:27:10,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2022-11-25 17:27:10,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2022-11-25 17:27:10,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2022-11-25 17:27:10,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2022-11-25 17:27:10,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2022-11-25 17:27:10,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2022-11-25 17:27:10,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2022-11-25 17:27:10,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2022-11-25 17:27:10,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2022-11-25 17:27:10,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2022-11-25 17:27:10,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2022-11-25 17:27:10,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2022-11-25 17:27:10,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2022-11-25 17:27:10,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2022-11-25 17:27:10,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2022-11-25 17:27:10,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2022-11-25 17:27:10,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2022-11-25 17:27:10,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2022-11-25 17:27:10,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2022-11-25 17:27:10,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2022-11-25 17:27:10,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2022-11-25 17:27:10,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2022-11-25 17:27:10,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2022-11-25 17:27:10,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2022-11-25 17:27:10,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2022-11-25 17:27:10,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2022-11-25 17:27:10,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2022-11-25 17:27:10,859 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2022-11-25 17:27:10,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2022-11-25 17:27:10,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2022-11-25 17:27:10,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2022-11-25 17:27:10,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2022-11-25 17:27:10,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2022-11-25 17:27:10,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2022-11-25 17:27:10,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:27:11,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:27:11,067 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:27:11,074 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:27:11,074 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:27:11,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:27:11 BasicIcfg [2022-11-25 17:27:11,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:27:11,077 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:27:11,077 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:27:11,077 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:27:11,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:25:53" (3/4) ... [2022-11-25 17:27:11,084 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:27:11,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:27:11,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:27:11,093 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 17:27:11,100 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-25 17:27:11,100 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:27:11,100 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:27:11,101 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:27:11,158 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:27:11,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:27:11,159 INFO L158 Benchmark]: Toolchain (without parser) took 79256.51ms. Allocated memory was 188.7MB in the beginning and 5.8GB in the end (delta: 5.6GB). Free memory was 142.0MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-11-25 17:27:11,159 INFO L158 Benchmark]: CDTParser took 0.84ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 85.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:27:11,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.22ms. Allocated memory is still 188.7MB. Free memory was 142.0MB in the beginning and 129.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:27:11,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.75ms. Allocated memory is still 188.7MB. Free memory was 128.5MB in the beginning and 126.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:27:11,160 INFO L158 Benchmark]: Boogie Preprocessor took 74.22ms. Allocated memory is still 188.7MB. Free memory was 126.1MB in the beginning and 124.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:27:11,160 INFO L158 Benchmark]: RCFGBuilder took 1170.76ms. Allocated memory is still 188.7MB. Free memory was 124.0MB in the beginning and 156.4MB in the end (delta: -32.4MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-11-25 17:27:11,167 INFO L158 Benchmark]: TraceAbstraction took 77506.55ms. Allocated memory was 188.7MB in the beginning and 5.8GB in the end (delta: 5.6GB). Free memory was 155.7MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. [2022-11-25 17:27:11,167 INFO L158 Benchmark]: Witness Printer took 80.78ms. Allocated memory is still 5.8GB. Free memory was 3.4GB in the beginning and 3.4GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:27:11,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84ms. Allocated memory is still 142.6MB. Free memory was 85.7MB in the beginning and 85.6MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.22ms. Allocated memory is still 188.7MB. Free memory was 142.0MB in the beginning and 129.1MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.75ms. Allocated memory is still 188.7MB. Free memory was 128.5MB in the beginning and 126.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.22ms. Allocated memory is still 188.7MB. Free memory was 126.1MB in the beginning and 124.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1170.76ms. Allocated memory is still 188.7MB. Free memory was 124.0MB in the beginning and 156.4MB in the end (delta: -32.4MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * TraceAbstraction took 77506.55ms. Allocated memory was 188.7MB in the beginning and 5.8GB in the end (delta: 5.6GB). Free memory was 155.7MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.4GB. Max. memory is 16.1GB. * Witness Printer took 80.78ms. Allocated memory is still 5.8GB. Free memory was 3.4GB in the beginning and 3.4GB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.1s, 411 PlacesBefore, 54 PlacesAfterwards, 432 TransitionsBefore, 48 TransitionsAfterwards, 62208 CoEnabledTransitionPairs, 8 FixpointIterations, 121 TrivialSequentialCompositions, 336 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 71 ConcurrentYvCompositions, 27 ChoiceCompositions, 564 TotalNumberOfCompositions, 58215 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57500, independent: 57476, independent conditional: 0, independent unconditional: 57476, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 43992, independent: 43977, independent conditional: 0, independent unconditional: 43977, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 43992, independent: 43977, independent conditional: 0, independent unconditional: 43977, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 60, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 57500, independent: 13499, independent conditional: 0, independent unconditional: 13499, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 43992, unknown conditional: 0, unknown unconditional: 43992] , Statistics on independence cache: Total cache size (in pairs): 162, Positive cache size: 160, Positive conditional cache size: 0, Positive unconditional cache size: 160, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 692 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 77.1s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 40.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 31.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1243 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 948 mSDsluCounter, 73 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 73 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1669 IncrementalHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 73 mSolverCounterUnsat, 73 mSDtfsCounter, 1669 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=11, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 209 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 491 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1095 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 28 InterpolantComputations, 16 PerfectInterpolantSequences, 144/158 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:27:11,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea4dcb71-00da-45ff-83c4-4f2c3b4c17e7/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE