./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:27:30,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:27:30,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:27:30,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:27:30,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:27:30,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:27:30,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:27:30,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:27:30,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:27:30,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:27:30,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:27:30,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:27:30,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:27:30,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:27:30,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:27:30,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:27:30,088 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:27:30,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:27:30,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:27:30,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:27:30,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:27:30,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:27:30,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:27:30,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:27:30,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:27:30,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:27:30,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:27:30,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:27:30,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:27:30,127 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:27:30,127 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:27:30,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:27:30,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:27:30,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:27:30,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:27:30,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:27:30,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:27:30,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:27:30,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:27:30,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:27:30,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:27:30,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:27:30,187 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:27:30,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:27:30,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:27:30,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:27:30,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:27:30,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:27:30,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:27:30,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:27:30,191 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:27:30,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:27:30,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:27:30,193 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:27:30,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:27:30,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:27:30,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:27:30,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:27:30,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:27:30,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:27:30,194 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:27:30,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:27:30,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:27:30,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:27:30,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:27:30,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:27:30,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:27:30,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:27:30,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:30,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:27:30,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:27:30,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:27:30,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:27:30,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:27:30,200 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:27:30,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:27:30,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:27:30,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 [2022-11-16 12:27:30,534 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:27:30,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:27:30,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:27:30,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:27:30,569 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:27:30,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-16 12:27:30,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/data/db3053a8e/b3108f28aab64893baed2871d7efce03/FLAGe25337f8a [2022-11-16 12:27:31,171 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:27:31,172 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-16 12:27:31,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/data/db3053a8e/b3108f28aab64893baed2871d7efce03/FLAGe25337f8a [2022-11-16 12:27:31,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/data/db3053a8e/b3108f28aab64893baed2871d7efce03 [2022-11-16 12:27:31,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:27:31,541 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:27:31,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:31,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:27:31,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:27:31,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f2c396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31, skipping insertion in model container [2022-11-16 12:27:31,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:27:31,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:27:31,789 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-16 12:27:31,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:31,799 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:27:31,825 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-16 12:27:31,830 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:27:31,843 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:27:31,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31 WrapperNode [2022-11-16 12:27:31,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:27:31,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:31,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:27:31,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:27:31,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,891 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-16 12:27:31,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:27:31,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:27:31,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:27:31,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:27:31,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:27:31,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:27:31,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:27:31,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:27:31,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (1/1) ... [2022-11-16 12:27:31,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:27:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:31,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:27:31,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:27:32,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:27:32,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:27:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:27:32,005 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:27:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:27:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:27:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:27:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:27:32,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:27:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:27:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:27:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:27:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:27:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:27:32,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:27:32,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:27:32,009 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:27:32,107 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:27:32,109 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:27:32,350 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:27:32,423 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:27:32,437 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:27:32,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:32 BoogieIcfgContainer [2022-11-16 12:27:32,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:27:32,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:27:32,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:27:32,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:27:32,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:27:31" (1/3) ... [2022-11-16 12:27:32,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bcece9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:32, skipping insertion in model container [2022-11-16 12:27:32,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:27:31" (2/3) ... [2022-11-16 12:27:32,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13bcece9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:27:32, skipping insertion in model container [2022-11-16 12:27:32,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:32" (3/3) ... [2022-11-16 12:27:32,464 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-11-16 12:27:32,474 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:27:32,505 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:27:32,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 12:27:32,506 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:27:32,644 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:27:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2022-11-16 12:27:32,747 INFO L130 PetriNetUnfolder]: 7/109 cut-off events. [2022-11-16 12:27:32,747 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:27:32,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-11-16 12:27:32,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 248 flow [2022-11-16 12:27:32,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 93 transitions, 198 flow [2022-11-16 12:27:32,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:27:32,779 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;@1e431b9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:27:32,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 12:27:32,798 INFO L130 PetriNetUnfolder]: 3/51 cut-off events. [2022-11-16 12:27:32,799 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:27:32,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:32,800 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:32,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash -921359260, now seen corresponding path program 1 times [2022-11-16 12:27:32,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:32,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107750860] [2022-11-16 12:27:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:32,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:33,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107750860] [2022-11-16 12:27:33,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107750860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:33,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:33,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:27:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801513723] [2022-11-16 12:27:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:33,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:27:33,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:33,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:27:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:27:33,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-16 12:27:33,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:33,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:33,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-16 12:27:33,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:34,074 INFO L130 PetriNetUnfolder]: 520/1093 cut-off events. [2022-11-16 12:27:34,075 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-16 12:27:34,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 1093 events. 520/1093 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6354 event pairs, 96 based on Foata normal form. 102/754 useless extension candidates. Maximal degree in co-relation 1838. Up to 364 conditions per place. [2022-11-16 12:27:34,100 INFO L137 encePairwiseOnDemand]: 94/112 looper letters, 24 selfloop transitions, 11 changer transitions 1/102 dead transitions. [2022-11-16 12:27:34,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 297 flow [2022-11-16 12:27:34,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2022-11-16 12:27:34,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-11-16 12:27:34,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2022-11-16 12:27:34,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2022-11-16 12:27:34,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:34,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2022-11-16 12:27:34,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,156 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,158 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 198 flow. Second operand 5 states and 455 transitions. [2022-11-16 12:27:34,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 297 flow [2022-11-16 12:27:34,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:34,170 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 256 flow [2022-11-16 12:27:34,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2022-11-16 12:27:34,178 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2022-11-16 12:27:34,179 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 256 flow [2022-11-16 12:27:34,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:34,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:34,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:27:34,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:34,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash -921359259, now seen corresponding path program 1 times [2022-11-16 12:27:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:34,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596371599] [2022-11-16 12:27:34,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:34,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:34,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596371599] [2022-11-16 12:27:34,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596371599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:34,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:34,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:34,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999432702] [2022-11-16 12:27:34,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:34,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:34,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:34,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:34,397 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-11-16 12:27:34,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:34,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-11-16 12:27:34,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:34,649 INFO L130 PetriNetUnfolder]: 363/795 cut-off events. [2022-11-16 12:27:34,650 INFO L131 PetriNetUnfolder]: For 509/565 co-relation queries the response was YES. [2022-11-16 12:27:34,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 795 events. 363/795 cut-off events. For 509/565 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4247 event pairs, 113 based on Foata normal form. 75/703 useless extension candidates. Maximal degree in co-relation 1632. Up to 489 conditions per place. [2022-11-16 12:27:34,660 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 22 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2022-11-16 12:27:34,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 286 flow [2022-11-16 12:27:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-11-16 12:27:34,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7924107142857143 [2022-11-16 12:27:34,662 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2022-11-16 12:27:34,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2022-11-16 12:27:34,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:34,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2022-11-16 12:27:34,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,667 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 256 flow. Second operand 4 states and 355 transitions. [2022-11-16 12:27:34,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 286 flow [2022-11-16 12:27:34,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:27:34,671 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 238 flow [2022-11-16 12:27:34,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2022-11-16 12:27:34,672 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2022-11-16 12:27:34,672 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 238 flow [2022-11-16 12:27:34,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:34,673 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:34,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:27:34,673 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:34,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash -921359225, now seen corresponding path program 1 times [2022-11-16 12:27:34,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:34,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120964470] [2022-11-16 12:27:34,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:34,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:34,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:34,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120964470] [2022-11-16 12:27:34,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120964470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:34,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:34,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:27:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927848343] [2022-11-16 12:27:34,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:34,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:27:34,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:27:34,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:27:34,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-16 12:27:34,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:34,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:34,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-16 12:27:34,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:35,024 INFO L130 PetriNetUnfolder]: 208/531 cut-off events. [2022-11-16 12:27:35,025 INFO L131 PetriNetUnfolder]: For 200/261 co-relation queries the response was YES. [2022-11-16 12:27:35,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 531 events. 208/531 cut-off events. For 200/261 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2829 event pairs, 40 based on Foata normal form. 12/461 useless extension candidates. Maximal degree in co-relation 1148. Up to 151 conditions per place. [2022-11-16 12:27:35,030 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 30 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2022-11-16 12:27:35,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 101 transitions, 345 flow [2022-11-16 12:27:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-16 12:27:35,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-11-16 12:27:35,033 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-16 12:27:35,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-16 12:27:35,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:35,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-16 12:27:35,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,038 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 238 flow. Second operand 5 states and 440 transitions. [2022-11-16 12:27:35,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 101 transitions, 345 flow [2022-11-16 12:27:35,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 339 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:35,044 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 258 flow [2022-11-16 12:27:35,044 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-11-16 12:27:35,047 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2022-11-16 12:27:35,047 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 258 flow [2022-11-16 12:27:35,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:35,049 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:35,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:27:35,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1880921272, now seen corresponding path program 1 times [2022-11-16 12:27:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:35,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652885809] [2022-11-16 12:27:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:35,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:35,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:35,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:35,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652885809] [2022-11-16 12:27:35,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652885809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:35,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:35,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:27:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114410973] [2022-11-16 12:27:35,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:35,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:35,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:35,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:27:35,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:35,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:27:35,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:35,404 INFO L130 PetriNetUnfolder]: 222/646 cut-off events. [2022-11-16 12:27:35,404 INFO L131 PetriNetUnfolder]: For 333/395 co-relation queries the response was YES. [2022-11-16 12:27:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 646 events. 222/646 cut-off events. For 333/395 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3773 event pairs, 45 based on Foata normal form. 28/582 useless extension candidates. Maximal degree in co-relation 1068. Up to 150 conditions per place. [2022-11-16 12:27:35,411 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 35 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2022-11-16 12:27:35,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 404 flow [2022-11-16 12:27:35,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:35,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2022-11-16 12:27:35,414 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-16 12:27:35,414 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2022-11-16 12:27:35,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2022-11-16 12:27:35,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:35,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2022-11-16 12:27:35,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,418 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 258 flow. Second operand 4 states and 378 transitions. [2022-11-16 12:27:35,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 404 flow [2022-11-16 12:27:35,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:27:35,422 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 275 flow [2022-11-16 12:27:35,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2022-11-16 12:27:35,424 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2022-11-16 12:27:35,424 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 275 flow [2022-11-16 12:27:35,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:35,425 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:27:35,426 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1880921307, now seen corresponding path program 1 times [2022-11-16 12:27:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:35,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460387348] [2022-11-16 12:27:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:35,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:35,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460387348] [2022-11-16 12:27:35,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460387348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:35,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:35,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:27:35,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65166358] [2022-11-16 12:27:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:27:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:27:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:27:35,539 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-11-16 12:27:35,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:35,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-11-16 12:27:35,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:35,842 INFO L130 PetriNetUnfolder]: 474/1266 cut-off events. [2022-11-16 12:27:35,843 INFO L131 PetriNetUnfolder]: For 601/607 co-relation queries the response was YES. [2022-11-16 12:27:35,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 1266 events. 474/1266 cut-off events. For 601/607 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8659 event pairs, 112 based on Foata normal form. 19/1037 useless extension candidates. Maximal degree in co-relation 1450. Up to 454 conditions per place. [2022-11-16 12:27:35,856 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 25 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2022-11-16 12:27:35,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 406 flow [2022-11-16 12:27:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:27:35,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:27:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 533 transitions. [2022-11-16 12:27:35,860 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7931547619047619 [2022-11-16 12:27:35,860 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 533 transitions. [2022-11-16 12:27:35,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 533 transitions. [2022-11-16 12:27:35,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:35,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 533 transitions. [2022-11-16 12:27:35,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,866 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 275 flow. Second operand 6 states and 533 transitions. [2022-11-16 12:27:35,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 406 flow [2022-11-16 12:27:35,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:27:35,877 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 382 flow [2022-11-16 12:27:35,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2022-11-16 12:27:35,880 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 13 predicate places. [2022-11-16 12:27:35,881 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 382 flow [2022-11-16 12:27:35,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:35,882 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:35,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:27:35,882 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:35,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:35,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1880921306, now seen corresponding path program 1 times [2022-11-16 12:27:35,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:35,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767951094] [2022-11-16 12:27:35,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:35,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:35,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:35,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767951094] [2022-11-16 12:27:35,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767951094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:35,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:35,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:27:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081297181] [2022-11-16 12:27:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:35,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:27:35,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:35,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:27:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:27:35,980 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:27:35,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:35,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:35,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:27:35,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:36,169 INFO L130 PetriNetUnfolder]: 350/1063 cut-off events. [2022-11-16 12:27:36,170 INFO L131 PetriNetUnfolder]: For 1197/1233 co-relation queries the response was YES. [2022-11-16 12:27:36,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 1063 events. 350/1063 cut-off events. For 1197/1233 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7096 event pairs, 27 based on Foata normal form. 68/911 useless extension candidates. Maximal degree in co-relation 2453. Up to 497 conditions per place. [2022-11-16 12:27:36,181 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 29 selfloop transitions, 6 changer transitions 0/106 dead transitions. [2022-11-16 12:27:36,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 465 flow [2022-11-16 12:27:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:27:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:27:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2022-11-16 12:27:36,183 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-11-16 12:27:36,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2022-11-16 12:27:36,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2022-11-16 12:27:36,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:36,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2022-11-16 12:27:36,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,186 INFO L175 Difference]: Start difference. First operand has 109 places, 102 transitions, 382 flow. Second operand 3 states and 284 transitions. [2022-11-16 12:27:36,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 465 flow [2022-11-16 12:27:36,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 460 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:36,191 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 403 flow [2022-11-16 12:27:36,191 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2022-11-16 12:27:36,192 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2022-11-16 12:27:36,192 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 403 flow [2022-11-16 12:27:36,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:36,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:27:36,193 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:36,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1505372937, now seen corresponding path program 1 times [2022-11-16 12:27:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42992644] [2022-11-16 12:27:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:36,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:36,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:36,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:36,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42992644] [2022-11-16 12:27:36,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42992644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:36,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:36,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:27:36,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845198926] [2022-11-16 12:27:36,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:36,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:27:36,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:27:36,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:27:36,319 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-16 12:27:36,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:36,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-16 12:27:36,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:36,548 INFO L130 PetriNetUnfolder]: 411/1135 cut-off events. [2022-11-16 12:27:36,548 INFO L131 PetriNetUnfolder]: For 1467/1499 co-relation queries the response was YES. [2022-11-16 12:27:36,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1135 events. 411/1135 cut-off events. For 1467/1499 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7496 event pairs, 115 based on Foata normal form. 21/939 useless extension candidates. Maximal degree in co-relation 2791. Up to 398 conditions per place. [2022-11-16 12:27:36,561 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 31 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2022-11-16 12:27:36,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 531 flow [2022-11-16 12:27:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:27:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:27:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-16 12:27:36,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-11-16 12:27:36,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-16 12:27:36,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-16 12:27:36,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:36,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-16 12:27:36,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,570 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 403 flow. Second operand 5 states and 440 transitions. [2022-11-16 12:27:36,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 531 flow [2022-11-16 12:27:36,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 524 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:36,574 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 467 flow [2022-11-16 12:27:36,574 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2022-11-16 12:27:36,575 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 16 predicate places. [2022-11-16 12:27:36,576 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 467 flow [2022-11-16 12:27:36,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,577 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:36,577 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:36,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:27:36,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:36,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1215398718, now seen corresponding path program 1 times [2022-11-16 12:27:36,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:36,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86560389] [2022-11-16 12:27:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:36,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:36,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:36,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86560389] [2022-11-16 12:27:36,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86560389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:36,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:36,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:27:36,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915723812] [2022-11-16 12:27:36,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:36,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:27:36,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:27:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:27:36,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-11-16 12:27:36,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 467 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:36,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:36,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-11-16 12:27:36,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:37,664 INFO L130 PetriNetUnfolder]: 2003/4034 cut-off events. [2022-11-16 12:27:37,664 INFO L131 PetriNetUnfolder]: For 6911/6911 co-relation queries the response was YES. [2022-11-16 12:27:37,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11641 conditions, 4034 events. 2003/4034 cut-off events. For 6911/6911 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31292 event pairs, 213 based on Foata normal form. 78/3726 useless extension candidates. Maximal degree in co-relation 11405. Up to 1865 conditions per place. [2022-11-16 12:27:37,713 INFO L137 encePairwiseOnDemand]: 98/112 looper letters, 81 selfloop transitions, 20 changer transitions 0/151 dead transitions. [2022-11-16 12:27:37,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 888 flow [2022-11-16 12:27:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:27:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:27:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2022-11-16 12:27:37,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6951530612244898 [2022-11-16 12:27:37,717 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2022-11-16 12:27:37,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2022-11-16 12:27:37,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:37,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2022-11-16 12:27:37,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:37,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:37,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:37,723 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 467 flow. Second operand 7 states and 545 transitions. [2022-11-16 12:27:37,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 888 flow [2022-11-16 12:27:37,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 878 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 12:27:37,734 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 637 flow [2022-11-16 12:27:37,735 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2022-11-16 12:27:37,737 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2022-11-16 12:27:37,737 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 637 flow [2022-11-16 12:27:37,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:37,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:37,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:37,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:27:37,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1637249854, now seen corresponding path program 1 times [2022-11-16 12:27:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:37,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591269037] [2022-11-16 12:27:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:37,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:38,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:38,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591269037] [2022-11-16 12:27:38,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591269037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:38,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:38,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:27:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387372723] [2022-11-16 12:27:38,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:38,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:27:38,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:38,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:27:38,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:27:38,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-11-16 12:27:38,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:38,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:38,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-11-16 12:27:38,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:39,593 INFO L130 PetriNetUnfolder]: 3660/7439 cut-off events. [2022-11-16 12:27:39,593 INFO L131 PetriNetUnfolder]: For 18808/18808 co-relation queries the response was YES. [2022-11-16 12:27:39,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22612 conditions, 7439 events. 3660/7439 cut-off events. For 18808/18808 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 64265 event pairs, 911 based on Foata normal form. 163/7196 useless extension candidates. Maximal degree in co-relation 17856. Up to 2701 conditions per place. [2022-11-16 12:27:39,680 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 95 selfloop transitions, 34 changer transitions 0/179 dead transitions. [2022-11-16 12:27:39,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1319 flow [2022-11-16 12:27:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:27:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:27:39,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 548 transitions. [2022-11-16 12:27:39,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2022-11-16 12:27:39,683 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 548 transitions. [2022-11-16 12:27:39,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 548 transitions. [2022-11-16 12:27:39,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:39,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 548 transitions. [2022-11-16 12:27:39,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:39,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:39,688 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:39,688 INFO L175 Difference]: Start difference. First operand has 120 places, 114 transitions, 637 flow. Second operand 7 states and 548 transitions. [2022-11-16 12:27:39,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1319 flow [2022-11-16 12:27:39,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 179 transitions, 1295 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:39,724 INFO L231 Difference]: Finished difference. Result has 125 places, 136 transitions, 1016 flow [2022-11-16 12:27:39,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1016, PETRI_PLACES=125, PETRI_TRANSITIONS=136} [2022-11-16 12:27:39,725 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 29 predicate places. [2022-11-16 12:27:39,726 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 136 transitions, 1016 flow [2022-11-16 12:27:39,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:39,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:39,726 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:39,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:27:39,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash 890264035, now seen corresponding path program 1 times [2022-11-16 12:27:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:39,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602760638] [2022-11-16 12:27:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:39,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:39,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:39,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602760638] [2022-11-16 12:27:39,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602760638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:39,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98547536] [2022-11-16 12:27:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:39,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:39,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:39,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:27:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:40,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:27:40,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:40,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:40,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:40,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98547536] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:40,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:40,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-16 12:27:40,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384063559] [2022-11-16 12:27:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:40,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:27:40,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:27:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:27:40,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-16 12:27:40,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 136 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:40,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:40,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-16 12:27:40,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:40,994 INFO L130 PetriNetUnfolder]: 719/2374 cut-off events. [2022-11-16 12:27:40,994 INFO L131 PetriNetUnfolder]: For 12185/12205 co-relation queries the response was YES. [2022-11-16 12:27:41,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7721 conditions, 2374 events. 719/2374 cut-off events. For 12185/12205 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19709 event pairs, 45 based on Foata normal form. 30/2222 useless extension candidates. Maximal degree in co-relation 4774. Up to 695 conditions per place. [2022-11-16 12:27:41,021 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 67 selfloop transitions, 30 changer transitions 0/165 dead transitions. [2022-11-16 12:27:41,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 165 transitions, 1498 flow [2022-11-16 12:27:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:27:41,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:27:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2022-11-16 12:27:41,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901785714285714 [2022-11-16 12:27:41,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2022-11-16 12:27:41,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2022-11-16 12:27:41,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:41,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2022-11-16 12:27:41,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:41,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:41,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:41,029 INFO L175 Difference]: Start difference. First operand has 125 places, 136 transitions, 1016 flow. Second operand 6 states and 531 transitions. [2022-11-16 12:27:41,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 165 transitions, 1498 flow [2022-11-16 12:27:41,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 165 transitions, 1471 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:41,053 INFO L231 Difference]: Finished difference. Result has 130 places, 152 transitions, 1355 flow [2022-11-16 12:27:41,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1355, PETRI_PLACES=130, PETRI_TRANSITIONS=152} [2022-11-16 12:27:41,054 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 34 predicate places. [2022-11-16 12:27:41,054 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 152 transitions, 1355 flow [2022-11-16 12:27:41,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:41,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:41,055 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:41,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:41,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:27:41,261 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1340907300, now seen corresponding path program 1 times [2022-11-16 12:27:41,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:41,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524747196] [2022-11-16 12:27:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:41,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524747196] [2022-11-16 12:27:41,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524747196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772610470] [2022-11-16 12:27:41,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:41,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:41,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:41,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:41,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:27:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:41,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:27:41,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:41,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:42,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772610470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:42,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:42,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-11-16 12:27:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641667285] [2022-11-16 12:27:42,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:42,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:27:42,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:42,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:27:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:27:42,020 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-11-16 12:27:42,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 152 transitions, 1355 flow. Second operand has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:42,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:42,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-11-16 12:27:42,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:45,356 INFO L130 PetriNetUnfolder]: 8730/17513 cut-off events. [2022-11-16 12:27:45,356 INFO L131 PetriNetUnfolder]: For 90307/90309 co-relation queries the response was YES. [2022-11-16 12:27:45,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60006 conditions, 17513 events. 8730/17513 cut-off events. For 90307/90309 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 170511 event pairs, 1119 based on Foata normal form. 531/17139 useless extension candidates. Maximal degree in co-relation 59687. Up to 3284 conditions per place. [2022-11-16 12:27:45,555 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 169 selfloop transitions, 94 changer transitions 0/313 dead transitions. [2022-11-16 12:27:45,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 313 transitions, 3225 flow [2022-11-16 12:27:45,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:27:45,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 12:27:45,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 953 transitions. [2022-11-16 12:27:45,559 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7090773809523809 [2022-11-16 12:27:45,560 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 953 transitions. [2022-11-16 12:27:45,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 953 transitions. [2022-11-16 12:27:45,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:45,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 953 transitions. [2022-11-16 12:27:45,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.41666666666667) internal successors, (953), 12 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:45,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:45,567 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:45,567 INFO L175 Difference]: Start difference. First operand has 130 places, 152 transitions, 1355 flow. Second operand 12 states and 953 transitions. [2022-11-16 12:27:45,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 313 transitions, 3225 flow [2022-11-16 12:27:45,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 313 transitions, 3207 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-16 12:27:45,692 INFO L231 Difference]: Finished difference. Result has 145 places, 211 transitions, 2628 flow [2022-11-16 12:27:45,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2628, PETRI_PLACES=145, PETRI_TRANSITIONS=211} [2022-11-16 12:27:45,693 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 49 predicate places. [2022-11-16 12:27:45,694 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 211 transitions, 2628 flow [2022-11-16 12:27:45,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:45,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:45,695 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:45,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:45,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:45,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:45,901 INFO L85 PathProgramCache]: Analyzing trace with hash -35046155, now seen corresponding path program 1 times [2022-11-16 12:27:45,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:45,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135718391] [2022-11-16 12:27:45,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:45,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:46,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:46,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135718391] [2022-11-16 12:27:46,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135718391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:46,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596073649] [2022-11-16 12:27:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:46,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:46,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:46,258 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:46,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:27:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:46,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:27:46,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:46,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:46,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:46,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596073649] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:46,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:27:46,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 17 [2022-11-16 12:27:46,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477085359] [2022-11-16 12:27:46,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:46,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:27:46,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:46,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:27:46,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:27:46,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-16 12:27:46,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 211 transitions, 2628 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:46,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:46,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-16 12:27:46,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:47,686 INFO L130 PetriNetUnfolder]: 1954/6416 cut-off events. [2022-11-16 12:27:47,687 INFO L131 PetriNetUnfolder]: For 72813/73283 co-relation queries the response was YES. [2022-11-16 12:27:47,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25425 conditions, 6416 events. 1954/6416 cut-off events. For 72813/73283 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 66404 event pairs, 167 based on Foata normal form. 263/6151 useless extension candidates. Maximal degree in co-relation 15965. Up to 1277 conditions per place. [2022-11-16 12:27:47,760 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 130 selfloop transitions, 105 changer transitions 0/303 dead transitions. [2022-11-16 12:27:47,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 303 transitions, 4505 flow [2022-11-16 12:27:47,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:27:47,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:27:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 625 transitions. [2022-11-16 12:27:47,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971938775510204 [2022-11-16 12:27:47,763 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 625 transitions. [2022-11-16 12:27:47,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 625 transitions. [2022-11-16 12:27:47,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:47,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 625 transitions. [2022-11-16 12:27:47,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:47,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:47,767 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:47,767 INFO L175 Difference]: Start difference. First operand has 145 places, 211 transitions, 2628 flow. Second operand 7 states and 625 transitions. [2022-11-16 12:27:47,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 303 transitions, 4505 flow [2022-11-16 12:27:47,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 303 transitions, 4228 flow, removed 134 selfloop flow, removed 4 redundant places. [2022-11-16 12:27:47,909 INFO L231 Difference]: Finished difference. Result has 151 places, 273 transitions, 4011 flow [2022-11-16 12:27:47,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4011, PETRI_PLACES=151, PETRI_TRANSITIONS=273} [2022-11-16 12:27:47,910 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 55 predicate places. [2022-11-16 12:27:47,910 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 273 transitions, 4011 flow [2022-11-16 12:27:47,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:47,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:47,911 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:47,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:48,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:48,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:48,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:48,123 INFO L85 PathProgramCache]: Analyzing trace with hash 308947103, now seen corresponding path program 1 times [2022-11-16 12:27:48,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:48,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390838636] [2022-11-16 12:27:48,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:48,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:27:48,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:48,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390838636] [2022-11-16 12:27:48,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390838636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:48,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:48,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:27:48,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996905801] [2022-11-16 12:27:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:48,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:48,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:27:48,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 273 transitions, 4011 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:48,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:48,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:27:48,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:49,180 INFO L130 PetriNetUnfolder]: 1376/4685 cut-off events. [2022-11-16 12:27:49,180 INFO L131 PetriNetUnfolder]: For 43367/43624 co-relation queries the response was YES. [2022-11-16 12:27:49,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18011 conditions, 4685 events. 1376/4685 cut-off events. For 43367/43624 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 48921 event pairs, 231 based on Foata normal form. 248/4498 useless extension candidates. Maximal degree in co-relation 17742. Up to 969 conditions per place. [2022-11-16 12:27:49,225 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 230 selfloop transitions, 5 changer transitions 0/311 dead transitions. [2022-11-16 12:27:49,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 311 transitions, 5087 flow [2022-11-16 12:27:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2022-11-16 12:27:49,227 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8459821428571429 [2022-11-16 12:27:49,227 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2022-11-16 12:27:49,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2022-11-16 12:27:49,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:49,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2022-11-16 12:27:49,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,231 INFO L175 Difference]: Start difference. First operand has 151 places, 273 transitions, 4011 flow. Second operand 4 states and 379 transitions. [2022-11-16 12:27:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 311 transitions, 5087 flow [2022-11-16 12:27:49,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 311 transitions, 4855 flow, removed 53 selfloop flow, removed 7 redundant places. [2022-11-16 12:27:49,337 INFO L231 Difference]: Finished difference. Result has 150 places, 230 transitions, 3045 flow [2022-11-16 12:27:49,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3045, PETRI_PLACES=150, PETRI_TRANSITIONS=230} [2022-11-16 12:27:49,338 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 54 predicate places. [2022-11-16 12:27:49,338 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 230 transitions, 3045 flow [2022-11-16 12:27:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:49,339 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:49,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:27:49,339 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1004956634, now seen corresponding path program 1 times [2022-11-16 12:27:49,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:49,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631493519] [2022-11-16 12:27:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:49,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:27:49,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:49,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631493519] [2022-11-16 12:27:49,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631493519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:49,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:49,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:27:49,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729142304] [2022-11-16 12:27:49,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:49,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:49,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:49,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:49,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:27:49,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 230 transitions, 3045 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:49,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:49,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:27:49,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:50,274 INFO L130 PetriNetUnfolder]: 829/3058 cut-off events. [2022-11-16 12:27:50,274 INFO L131 PetriNetUnfolder]: For 24032/24032 co-relation queries the response was YES. [2022-11-16 12:27:50,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11430 conditions, 3058 events. 829/3058 cut-off events. For 24032/24032 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 28955 event pairs, 164 based on Foata normal form. 18/2798 useless extension candidates. Maximal degree in co-relation 11167. Up to 727 conditions per place. [2022-11-16 12:27:50,308 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 174 selfloop transitions, 7 changer transitions 0/254 dead transitions. [2022-11-16 12:27:50,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 254 transitions, 3764 flow [2022-11-16 12:27:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-11-16 12:27:50,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8370535714285714 [2022-11-16 12:27:50,311 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-11-16 12:27:50,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-11-16 12:27:50,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:50,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-11-16 12:27:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,314 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,314 INFO L175 Difference]: Start difference. First operand has 150 places, 230 transitions, 3045 flow. Second operand 4 states and 375 transitions. [2022-11-16 12:27:50,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 254 transitions, 3764 flow [2022-11-16 12:27:50,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 254 transitions, 3595 flow, removed 57 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:50,372 INFO L231 Difference]: Finished difference. Result has 152 places, 200 transitions, 2357 flow [2022-11-16 12:27:50,373 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2357, PETRI_PLACES=152, PETRI_TRANSITIONS=200} [2022-11-16 12:27:50,374 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 56 predicate places. [2022-11-16 12:27:50,374 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 200 transitions, 2357 flow [2022-11-16 12:27:50,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,374 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:50,375 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:50,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:27:50,375 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:50,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2003609093, now seen corresponding path program 1 times [2022-11-16 12:27:50,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:50,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935286231] [2022-11-16 12:27:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:50,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:27:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:50,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935286231] [2022-11-16 12:27:50,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935286231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:27:50,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:27:50,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:27:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074307910] [2022-11-16 12:27:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:27:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:27:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:50,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:27:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:27:50,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:27:50,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 200 transitions, 2357 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:50,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:50,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:27:50,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:51,038 INFO L130 PetriNetUnfolder]: 653/3260 cut-off events. [2022-11-16 12:27:51,038 INFO L131 PetriNetUnfolder]: For 23239/23305 co-relation queries the response was YES. [2022-11-16 12:27:51,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11259 conditions, 3260 events. 653/3260 cut-off events. For 23239/23305 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 30985 event pairs, 29 based on Foata normal form. 62/3029 useless extension candidates. Maximal degree in co-relation 10996. Up to 723 conditions per place. [2022-11-16 12:27:51,076 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 84 selfloop transitions, 56 changer transitions 1/217 dead transitions. [2022-11-16 12:27:51,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 217 transitions, 2815 flow [2022-11-16 12:27:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:27:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:27:51,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-16 12:27:51,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-16 12:27:51,078 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-16 12:27:51,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-16 12:27:51,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:51,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-16 12:27:51,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,081 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,082 INFO L175 Difference]: Start difference. First operand has 152 places, 200 transitions, 2357 flow. Second operand 4 states and 376 transitions. [2022-11-16 12:27:51,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 217 transitions, 2815 flow [2022-11-16 12:27:51,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 217 transitions, 2803 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-16 12:27:51,147 INFO L231 Difference]: Finished difference. Result has 156 places, 209 transitions, 2740 flow [2022-11-16 12:27:51,148 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2740, PETRI_PLACES=156, PETRI_TRANSITIONS=209} [2022-11-16 12:27:51,148 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 60 predicate places. [2022-11-16 12:27:51,149 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 209 transitions, 2740 flow [2022-11-16 12:27:51,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:51,149 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:51,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:27:51,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:51,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:51,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1898853759, now seen corresponding path program 2 times [2022-11-16 12:27:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:51,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672330005] [2022-11-16 12:27:51,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:51,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:27:51,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:51,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672330005] [2022-11-16 12:27:51,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672330005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:51,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738952652] [2022-11-16 12:27:51,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:27:51,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:51,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:51,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:51,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:27:51,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:27:51,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:27:51,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:27:51,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:27:51,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:27:51,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738952652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:51,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:51,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-11-16 12:27:51,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036336631] [2022-11-16 12:27:51,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:51,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:27:51,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:51,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:27:51,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:27:51,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-11-16 12:27:51,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 209 transitions, 2740 flow. Second operand has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:51,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:51,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-11-16 12:27:51,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:52,302 INFO L130 PetriNetUnfolder]: 593/2590 cut-off events. [2022-11-16 12:27:52,302 INFO L131 PetriNetUnfolder]: For 26573/26626 co-relation queries the response was YES. [2022-11-16 12:27:52,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9895 conditions, 2590 events. 593/2590 cut-off events. For 26573/26626 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22634 event pairs, 64 based on Foata normal form. 78/2461 useless extension candidates. Maximal degree in co-relation 8841. Up to 352 conditions per place. [2022-11-16 12:27:52,327 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 24 selfloop transitions, 126 changer transitions 0/223 dead transitions. [2022-11-16 12:27:52,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 223 transitions, 3135 flow [2022-11-16 12:27:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:27:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:27:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 709 transitions. [2022-11-16 12:27:52,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7912946428571429 [2022-11-16 12:27:52,330 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 709 transitions. [2022-11-16 12:27:52,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 709 transitions. [2022-11-16 12:27:52,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:52,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 709 transitions. [2022-11-16 12:27:52,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,336 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,337 INFO L175 Difference]: Start difference. First operand has 156 places, 209 transitions, 2740 flow. Second operand 8 states and 709 transitions. [2022-11-16 12:27:52,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 223 transitions, 3135 flow [2022-11-16 12:27:52,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 223 transitions, 3096 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-16 12:27:52,394 INFO L231 Difference]: Finished difference. Result has 160 places, 213 transitions, 3147 flow [2022-11-16 12:27:52,394 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3147, PETRI_PLACES=160, PETRI_TRANSITIONS=213} [2022-11-16 12:27:52,395 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 64 predicate places. [2022-11-16 12:27:52,395 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 213 transitions, 3147 flow [2022-11-16 12:27:52,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:52,395 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:27:52,396 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:52,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:27:52,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:27:52,601 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:27:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:27:52,601 INFO L85 PathProgramCache]: Analyzing trace with hash 431723148, now seen corresponding path program 1 times [2022-11-16 12:27:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:27:52,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671200971] [2022-11-16 12:27:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:27:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:52,786 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:52,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:27:52,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671200971] [2022-11-16 12:27:52,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671200971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:27:52,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455727399] [2022-11-16 12:27:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:27:52,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:27:52,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:27:52,788 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:27:52,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:27:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:27:52,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:27:52,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:27:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:52,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:27:53,028 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:27:53,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455727399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:27:53,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:27:53,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-11-16 12:27:53,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479708988] [2022-11-16 12:27:53,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:27:53,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:27:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:27:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:27:53,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:27:53,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-16 12:27:53,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 213 transitions, 3147 flow. Second operand has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:27:53,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-16 12:27:53,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:27:53,683 INFO L130 PetriNetUnfolder]: 538/2797 cut-off events. [2022-11-16 12:27:53,683 INFO L131 PetriNetUnfolder]: For 28572/28644 co-relation queries the response was YES. [2022-11-16 12:27:53,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10363 conditions, 2797 events. 538/2797 cut-off events. For 28572/28644 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 26199 event pairs, 21 based on Foata normal form. 78/2622 useless extension candidates. Maximal degree in co-relation 10087. Up to 340 conditions per place. [2022-11-16 12:27:53,702 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 0 selfloop transitions, 0 changer transitions 215/215 dead transitions. [2022-11-16 12:27:53,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 215 transitions, 3103 flow [2022-11-16 12:27:53,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:27:53,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:27:53,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2022-11-16 12:27:53,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288690476190477 [2022-11-16 12:27:53,704 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2022-11-16 12:27:53,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2022-11-16 12:27:53,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:27:53,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2022-11-16 12:27:53,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,709 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,709 INFO L175 Difference]: Start difference. First operand has 160 places, 213 transitions, 3147 flow. Second operand 6 states and 557 transitions. [2022-11-16 12:27:53,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 215 transitions, 3103 flow [2022-11-16 12:27:53,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 215 transitions, 2752 flow, removed 52 selfloop flow, removed 13 redundant places. [2022-11-16 12:27:53,778 INFO L231 Difference]: Finished difference. Result has 150 places, 0 transitions, 0 flow [2022-11-16 12:27:53,779 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=150, PETRI_TRANSITIONS=0} [2022-11-16 12:27:53,779 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 54 predicate places. [2022-11-16 12:27:53,779 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 0 transitions, 0 flow [2022-11-16 12:27:53,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:27:53,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2022-11-16 12:27:53,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-16 12:27:53,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-16 12:27:53,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-16 12:27:53,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-16 12:27:53,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-16 12:27:53,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-16 12:27:53,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-16 12:27:53,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 19 remaining) [2022-11-16 12:27:53,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2022-11-16 12:27:53,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2022-11-16 12:27:53,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-16 12:27:53,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-16 12:27:53,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-16 12:27:53,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-16 12:27:53,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-16 12:27:53,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-16 12:27:53,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-16 12:27:53,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-16 12:27:53,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:27:53,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:27:53,992 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:27:53,997 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:27:53,997 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:27:54,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:27:54 BasicIcfg [2022-11-16 12:27:54,002 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:27:54,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:27:54,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:27:54,003 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:27:54,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:27:32" (3/4) ... [2022-11-16 12:27:54,006 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:27:54,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:27:54,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:27:54,012 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 12:27:54,016 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-16 12:27:54,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:27:54,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:27:54,017 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:27:54,050 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:27:54,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:27:54,051 INFO L158 Benchmark]: Toolchain (without parser) took 22510.16ms. Allocated memory was 117.4MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 76.0MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 518.7MB. Max. memory is 16.1GB. [2022-11-16 12:27:54,051 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:27:54,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.28ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 90.4MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:27:54,052 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.06ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 88.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:27:54,052 INFO L158 Benchmark]: Boogie Preprocessor took 28.49ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 87.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:27:54,053 INFO L158 Benchmark]: RCFGBuilder took 519.20ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 70.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 12:27:54,053 INFO L158 Benchmark]: TraceAbstraction took 21559.17ms. Allocated memory was 117.4MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 69.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 510.5MB. Max. memory is 16.1GB. [2022-11-16 12:27:54,053 INFO L158 Benchmark]: Witness Printer took 47.40ms. Allocated memory is still 2.0GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:27:54,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 92.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.28ms. Allocated memory is still 117.4MB. Free memory was 75.9MB in the beginning and 90.4MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.06ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 88.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.49ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 87.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 519.20ms. Allocated memory is still 117.4MB. Free memory was 87.3MB in the beginning and 70.0MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 21559.17ms. Allocated memory was 117.4MB in the beginning and 2.0GB in the end (delta: 1.9GB). Free memory was 69.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 510.5MB. Max. memory is 16.1GB. * Witness Printer took 47.40ms. Allocated memory is still 2.0GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: 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, 141 locations, 19 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: 21.3s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 556 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 556 mSDsluCounter, 343 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 236 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1307 IncrementalHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 236 mSolverCounterUnsat, 130 mSDtfsCounter, 1307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 773 GetRequests, 660 SyntacticMatches, 15 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4011occurred in iteration=12, InterpolantAutomatonStates: 97, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1285 NumberOfCodeBlocks, 1285 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1598 ConstructedInterpolants, 0 QuantifiedInterpolants, 6634 SizeOfPredicates, 16 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 27 InterpolantComputations, 14 PerfectInterpolantSequences, 240/326 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:27:54,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_67b3d456-f957-4fb9-8257-c611ae120966/bin/uautomizer-tPACEb0tL8/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