./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --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_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/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_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/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_0606cf17-a067-4c79-8ee2-d25d2be457e5/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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- 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 10:57:35,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:57:35,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:57:35,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:57:35,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:57:35,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:57:35,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:57:35,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:57:35,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:57:35,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:57:35,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:57:35,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:57:35,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:57:35,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:57:35,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:57:35,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:57:35,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:57:35,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:57:35,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:57:35,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:57:35,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:57:35,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:57:35,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:57:35,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:57:35,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:57:35,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:57:35,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:57:35,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:57:35,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:57:35,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:57:35,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:57:35,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:57:35,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:57:35,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:57:35,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:57:35,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:57:35,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:57:35,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:57:35,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:57:35,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:57:35,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:57:35,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:57:35,964 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:57:35,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:57:35,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:57:35,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:57:35,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:57:35,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:57:35,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:57:35,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:57:35,967 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:57:35,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:57:35,967 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:57:35,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:57:35,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:57:35,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:57:35,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:57:35,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:57:35,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:57:35,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:57:35,979 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:57:35,980 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:57:35,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:57:35,980 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:57:35,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:57:35,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:57:35,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:57:35,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:57:35,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:57:35,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:57:35,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:57:35,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:57:35,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:57:35,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:57:35,983 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:57:35,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:57:35,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:57:35,986 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_0606cf17-a067-4c79-8ee2-d25d2be457e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2022-11-16 10:57:36,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:57:36,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:57:36,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:57:36,261 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:57:36,262 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:57:36,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-16 10:57:36,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/data/1fbd94ef1/836b79f48c874a698f0e17c1f187fca6/FLAG39d16b07d [2022-11-16 10:57:36,858 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:57:36,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2022-11-16 10:57:36,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/data/1fbd94ef1/836b79f48c874a698f0e17c1f187fca6/FLAG39d16b07d [2022-11-16 10:57:37,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/data/1fbd94ef1/836b79f48c874a698f0e17c1f187fca6 [2022-11-16 10:57:37,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:57:37,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:57:37,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:57:37,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:57:37,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:57:37,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b7f0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37, skipping insertion in model container [2022-11-16 10:57:37,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:57:37,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:57:37,702 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_0606cf17-a067-4c79-8ee2-d25d2be457e5/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-16 10:57:37,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:57:37,730 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:57:37,801 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_0606cf17-a067-4c79-8ee2-d25d2be457e5/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2022-11-16 10:57:37,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:57:37,865 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:57:37,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37 WrapperNode [2022-11-16 10:57:37,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:57:37,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:57:37,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:57:37,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:57:37,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,951 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2022-11-16 10:57:37,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:57:37,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:57:37,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:57:37,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:57:37,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:37,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:38,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:38,004 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:38,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:38,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:57:38,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:57:38,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:57:38,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:57:38,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (1/1) ... [2022-11-16 10:57:38,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:57:38,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:38,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:57:38,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:57:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:57:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:57:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 10:57:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:57:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:57:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:57:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:57:38,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:57:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:57:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 10:57:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:57:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:57:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:57:38,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:57:38,106 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 10:57:38,307 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:57:38,309 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:57:38,621 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:57:38,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:57:38,630 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 10:57:38,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:57:38 BoogieIcfgContainer [2022-11-16 10:57:38,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:57:38,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:57:38,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:57:38,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:57:38,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:57:37" (1/3) ... [2022-11-16 10:57:38,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572690b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:57:38, skipping insertion in model container [2022-11-16 10:57:38,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:57:37" (2/3) ... [2022-11-16 10:57:38,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@572690b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:57:38, skipping insertion in model container [2022-11-16 10:57:38,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:57:38" (3/3) ... [2022-11-16 10:57:38,655 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2022-11-16 10:57:38,665 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:57:38,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:57:38,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 10:57:38,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:57:38,808 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 10:57:38,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 150 transitions, 316 flow [2022-11-16 10:57:38,992 INFO L130 PetriNetUnfolder]: 10/148 cut-off events. [2022-11-16 10:57:38,996 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 10:57:39,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 148 events. 10/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 93. Up to 3 conditions per place. [2022-11-16 10:57:39,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 150 transitions, 316 flow [2022-11-16 10:57:39,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 132 transitions, 273 flow [2022-11-16 10:57:39,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:57:39,046 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;@251a0f33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:57:39,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 10:57:39,072 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2022-11-16 10:57:39,072 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:57:39,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:39,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:39,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:39,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:39,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1877987877, now seen corresponding path program 1 times [2022-11-16 10:57:39,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:39,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953812375] [2022-11-16 10:57:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:39,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:39,468 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 10:57:39,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:39,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953812375] [2022-11-16 10:57:39,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953812375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:39,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:39,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 10:57:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588182483] [2022-11-16 10:57:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 10:57:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:39,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 10:57:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 10:57:39,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 150 [2022-11-16 10:57:39,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 273 flow. Second operand has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 10:57:39,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:39,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 150 [2022-11-16 10:57:39,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:39,576 INFO L130 PetriNetUnfolder]: 4/128 cut-off events. [2022-11-16 10:57:39,577 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 10:57:39,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 128 events. 4/128 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 7/123 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2022-11-16 10:57:39,580 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 3 selfloop transitions, 0 changer transitions 0/128 dead transitions. [2022-11-16 10:57:39,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 271 flow [2022-11-16 10:57:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 10:57:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 10:57:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 287 transitions. [2022-11-16 10:57:39,595 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9566666666666667 [2022-11-16 10:57:39,596 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 287 transitions. [2022-11-16 10:57:39,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 287 transitions. [2022-11-16 10:57:39,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:39,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 287 transitions. [2022-11-16 10:57:39,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 10:57:39,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 10:57:39,611 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 10:57:39,613 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 273 flow. Second operand 2 states and 287 transitions. [2022-11-16 10:57:39,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 271 flow [2022-11-16 10:57:39,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 128 transitions, 266 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:57:39,622 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 260 flow [2022-11-16 10:57:39,624 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2022-11-16 10:57:39,629 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, -2 predicate places. [2022-11-16 10:57:39,629 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 260 flow [2022-11-16 10:57:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.0) internal successors, (282), 2 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 10:57:39,630 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:39,630 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:39,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:57:39,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1877988838, now seen corresponding path program 1 times [2022-11-16 10:57:39,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:39,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218754135] [2022-11-16 10:57:39,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:39,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:39,951 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 10:57:39,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218754135] [2022-11-16 10:57:39,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218754135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:39,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:39,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:39,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591453468] [2022-11-16 10:57:39,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:39,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:39,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:39,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:39,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-11-16 10:57:39,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 260 flow. Second operand has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 10:57:39,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:39,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-11-16 10:57:39,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:40,209 INFO L130 PetriNetUnfolder]: 105/455 cut-off events. [2022-11-16 10:57:40,210 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 10:57:40,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 455 events. 105/455 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2209 event pairs, 3 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 676. Up to 116 conditions per place. [2022-11-16 10:57:40,219 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 33 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-16 10:57:40,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 151 transitions, 395 flow [2022-11-16 10:57:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2022-11-16 10:57:40,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946666666666667 [2022-11-16 10:57:40,228 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2022-11-16 10:57:40,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2022-11-16 10:57:40,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:40,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2022-11-16 10:57:40,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:40,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:40,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:40,240 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 260 flow. Second operand 5 states and 671 transitions. [2022-11-16 10:57:40,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 151 transitions, 395 flow [2022-11-16 10:57:40,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 151 transitions, 395 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:57:40,249 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 328 flow [2022-11-16 10:57:40,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2022-11-16 10:57:40,251 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 6 predicate places. [2022-11-16 10:57:40,251 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 328 flow [2022-11-16 10:57:40,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 0 states 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 10:57:40,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:40,253 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:40,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 10:57:40,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:40,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:40,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1244315691, now seen corresponding path program 1 times [2022-11-16 10:57:40,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:40,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63006667] [2022-11-16 10:57:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:40,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,453 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 10:57:40,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:40,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63006667] [2022-11-16 10:57:40,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63006667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:40,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:40,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:40,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347038044] [2022-11-16 10:57:40,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:40,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:40,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:40,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:40,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:40,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-16 10:57:40,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 135 transitions, 328 flow. Second operand has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 10:57:40,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:40,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-16 10:57:40,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:40,634 INFO L130 PetriNetUnfolder]: 56/442 cut-off events. [2022-11-16 10:57:40,634 INFO L131 PetriNetUnfolder]: For 54/59 co-relation queries the response was YES. [2022-11-16 10:57:40,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 442 events. 56/442 cut-off events. For 54/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1892 event pairs, 15 based on Foata normal form. 4/398 useless extension candidates. Maximal degree in co-relation 682. Up to 47 conditions per place. [2022-11-16 10:57:40,639 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 19 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2022-11-16 10:57:40,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 144 transitions, 398 flow [2022-11-16 10:57:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2022-11-16 10:57:40,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946666666666667 [2022-11-16 10:57:40,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2022-11-16 10:57:40,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2022-11-16 10:57:40,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:40,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2022-11-16 10:57:40,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:57:40,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:40,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:40,647 INFO L175 Difference]: Start difference. First operand has 137 places, 135 transitions, 328 flow. Second operand 5 states and 671 transitions. [2022-11-16 10:57:40,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 144 transitions, 398 flow [2022-11-16 10:57:40,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 144 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 10:57:40,652 INFO L231 Difference]: Finished difference. Result has 144 places, 138 transitions, 360 flow [2022-11-16 10:57:40,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=360, PETRI_PLACES=144, PETRI_TRANSITIONS=138} [2022-11-16 10:57:40,653 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 13 predicate places. [2022-11-16 10:57:40,653 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 138 transitions, 360 flow [2022-11-16 10:57:40,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.5) internal successors, (522), 4 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 10:57:40,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:40,654 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:40,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 10:57:40,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -501017586, now seen corresponding path program 1 times [2022-11-16 10:57:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037171576] [2022-11-16 10:57:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:40,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:40,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037171576] [2022-11-16 10:57:40,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037171576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:40,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924684863] [2022-11-16 10:57:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:40,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:40,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:40,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:40,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:57:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:40,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:57:40,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:41,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:41,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:41,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924684863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:41,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:41,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:57:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874450566] [2022-11-16 10:57:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:57:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:57:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:57:41,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-11-16 10:57:41,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 138 transitions, 360 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 10:57:41,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:41,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-11-16 10:57:41,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:41,391 INFO L130 PetriNetUnfolder]: 128/648 cut-off events. [2022-11-16 10:57:41,392 INFO L131 PetriNetUnfolder]: For 301/343 co-relation queries the response was YES. [2022-11-16 10:57:41,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 648 events. 128/648 cut-off events. For 301/343 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2904 event pairs, 16 based on Foata normal form. 26/634 useless extension candidates. Maximal degree in co-relation 1202. Up to 88 conditions per place. [2022-11-16 10:57:41,401 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 35 selfloop transitions, 15 changer transitions 1/164 dead transitions. [2022-11-16 10:57:41,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 164 transitions, 556 flow [2022-11-16 10:57:41,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:57:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:57:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 928 transitions. [2022-11-16 10:57:41,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8838095238095238 [2022-11-16 10:57:41,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 928 transitions. [2022-11-16 10:57:41,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 928 transitions. [2022-11-16 10:57:41,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:41,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 928 transitions. [2022-11-16 10:57:41,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 10:57:41,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:57:41,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:57:41,416 INFO L175 Difference]: Start difference. First operand has 144 places, 138 transitions, 360 flow. Second operand 7 states and 928 transitions. [2022-11-16 10:57:41,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 164 transitions, 556 flow [2022-11-16 10:57:41,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 164 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:57:41,424 INFO L231 Difference]: Finished difference. Result has 152 places, 144 transitions, 433 flow [2022-11-16 10:57:41,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=433, PETRI_PLACES=152, PETRI_TRANSITIONS=144} [2022-11-16 10:57:41,426 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 21 predicate places. [2022-11-16 10:57:41,426 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 144 transitions, 433 flow [2022-11-16 10:57:41,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states 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 10:57:41,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:41,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:41,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:41,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:41,634 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:41,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash -517995002, now seen corresponding path program 1 times [2022-11-16 10:57:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:41,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785627891] [2022-11-16 10:57:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:41,774 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 10:57:41,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:41,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785627891] [2022-11-16 10:57:41,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785627891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:41,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:41,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196589725] [2022-11-16 10:57:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:41,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 10:57:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:41,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 10:57:41,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 10:57:41,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 150 [2022-11-16 10:57:41,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 144 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 10:57:41,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:41,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 150 [2022-11-16 10:57:41,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:41,890 INFO L130 PetriNetUnfolder]: 35/364 cut-off events. [2022-11-16 10:57:41,891 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-11-16 10:57:41,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 364 events. 35/364 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1284 event pairs, 4 based on Foata normal form. 23/365 useless extension candidates. Maximal degree in co-relation 600. Up to 43 conditions per place. [2022-11-16 10:57:41,893 INFO L137 encePairwiseOnDemand]: 142/150 looper letters, 15 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2022-11-16 10:57:41,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 139 transitions, 433 flow [2022-11-16 10:57:41,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 10:57:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 10:57:41,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-11-16 10:57:41,895 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-11-16 10:57:41,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-11-16 10:57:41,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-11-16 10:57:41,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:41,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-11-16 10:57:41,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 10:57:41,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 10:57:41,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states 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 10:57:41,900 INFO L175 Difference]: Start difference. First operand has 152 places, 144 transitions, 433 flow. Second operand 3 states and 393 transitions. [2022-11-16 10:57:41,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 139 transitions, 433 flow [2022-11-16 10:57:41,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 139 transitions, 416 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-11-16 10:57:41,907 INFO L231 Difference]: Finished difference. Result has 150 places, 137 transitions, 379 flow [2022-11-16 10:57:41,907 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=150, PETRI_TRANSITIONS=137} [2022-11-16 10:57:41,911 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 19 predicate places. [2022-11-16 10:57:41,911 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 137 transitions, 379 flow [2022-11-16 10:57:41,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 10:57:41,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:41,912 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:41,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:57:41,912 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash 873784845, now seen corresponding path program 1 times [2022-11-16 10:57:41,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:41,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776105748] [2022-11-16 10:57:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:41,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:42,117 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 10:57:42,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:42,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776105748] [2022-11-16 10:57:42,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776105748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:42,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:42,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:57:42,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284545038] [2022-11-16 10:57:42,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:42,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:57:42,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:57:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:57:42,122 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 10:57:42,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 137 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 10:57:42,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:42,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 10:57:42,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:42,321 INFO L130 PetriNetUnfolder]: 58/476 cut-off events. [2022-11-16 10:57:42,322 INFO L131 PetriNetUnfolder]: For 149/149 co-relation queries the response was YES. [2022-11-16 10:57:42,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 476 events. 58/476 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1936 event pairs, 11 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 867. Up to 49 conditions per place. [2022-11-16 10:57:42,325 INFO L137 encePairwiseOnDemand]: 140/150 looper letters, 39 selfloop transitions, 11 changer transitions 1/159 dead transitions. [2022-11-16 10:57:42,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 159 transitions, 563 flow [2022-11-16 10:57:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:57:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:57:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1008 transitions. [2022-11-16 10:57:42,329 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-11-16 10:57:42,329 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1008 transitions. [2022-11-16 10:57:42,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1008 transitions. [2022-11-16 10:57:42,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:42,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1008 transitions. [2022-11-16 10:57:42,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.0) internal successors, (1008), 8 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 10:57:42,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:42,337 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:42,338 INFO L175 Difference]: Start difference. First operand has 150 places, 137 transitions, 379 flow. Second operand 8 states and 1008 transitions. [2022-11-16 10:57:42,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 159 transitions, 563 flow [2022-11-16 10:57:42,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:57:42,343 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 434 flow [2022-11-16 10:57:42,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=434, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2022-11-16 10:57:42,346 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 28 predicate places. [2022-11-16 10:57:42,346 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 434 flow [2022-11-16 10:57:42,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.16666666666667) internal successors, (733), 6 states have internal predecessors, (733), 0 states have call successors, (0), 0 states 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 10:57:42,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:42,348 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:42,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:57:42,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:42,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:42,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1920994870, now seen corresponding path program 1 times [2022-11-16 10:57:42,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:42,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216305735] [2022-11-16 10:57:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:42,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:42,561 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 10:57:42,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:42,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216305735] [2022-11-16 10:57:42,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216305735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:42,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:42,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:57:42,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437879644] [2022-11-16 10:57:42,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:42,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:57:42,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:42,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:57:42,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:57:42,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 10:57:42,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 0 states have call successors, (0), 0 states 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 10:57:42,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:42,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 10:57:42,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:42,771 INFO L130 PetriNetUnfolder]: 58/478 cut-off events. [2022-11-16 10:57:42,772 INFO L131 PetriNetUnfolder]: For 260/260 co-relation queries the response was YES. [2022-11-16 10:57:42,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 478 events. 58/478 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1997 event pairs, 9 based on Foata normal form. 5/464 useless extension candidates. Maximal degree in co-relation 924. Up to 79 conditions per place. [2022-11-16 10:57:42,775 INFO L137 encePairwiseOnDemand]: 139/150 looper letters, 38 selfloop transitions, 13 changer transitions 1/160 dead transitions. [2022-11-16 10:57:42,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 604 flow [2022-11-16 10:57:42,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:57:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:57:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1006 transitions. [2022-11-16 10:57:42,779 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383333333333334 [2022-11-16 10:57:42,779 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1006 transitions. [2022-11-16 10:57:42,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1006 transitions. [2022-11-16 10:57:42,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:42,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1006 transitions. [2022-11-16 10:57:42,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.75) internal successors, (1006), 8 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states 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 10:57:42,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:42,786 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:42,786 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 434 flow. Second operand 8 states and 1006 transitions. [2022-11-16 10:57:42,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 604 flow [2022-11-16 10:57:42,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 160 transitions, 590 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 10:57:42,792 INFO L231 Difference]: Finished difference. Result has 166 places, 147 transitions, 502 flow [2022-11-16 10:57:42,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=166, PETRI_TRANSITIONS=147} [2022-11-16 10:57:42,794 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 35 predicate places. [2022-11-16 10:57:42,798 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 147 transitions, 502 flow [2022-11-16 10:57:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 0 states have call successors, (0), 0 states 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 10:57:42,799 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:42,799 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:42,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:57:42,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:42,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1977038457, now seen corresponding path program 1 times [2022-11-16 10:57:42,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:42,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53464778] [2022-11-16 10:57:42,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:42,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:42,920 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 10:57:42,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:42,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53464778] [2022-11-16 10:57:42,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53464778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:42,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:42,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:42,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814774452] [2022-11-16 10:57:42,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:42,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:42,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:42,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-11-16 10:57:42,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 147 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 10:57:42,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:42,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-11-16 10:57:42,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:43,099 INFO L130 PetriNetUnfolder]: 82/569 cut-off events. [2022-11-16 10:57:43,100 INFO L131 PetriNetUnfolder]: For 348/349 co-relation queries the response was YES. [2022-11-16 10:57:43,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 569 events. 82/569 cut-off events. For 348/349 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2731 event pairs, 23 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 1098. Up to 118 conditions per place. [2022-11-16 10:57:43,104 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 22 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2022-11-16 10:57:43,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 157 transitions, 577 flow [2022-11-16 10:57:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 664 transitions. [2022-11-16 10:57:43,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8853333333333333 [2022-11-16 10:57:43,106 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 664 transitions. [2022-11-16 10:57:43,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 664 transitions. [2022-11-16 10:57:43,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:43,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 664 transitions. [2022-11-16 10:57:43,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.8) internal successors, (664), 5 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 10:57:43,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:43,111 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:43,111 INFO L175 Difference]: Start difference. First operand has 166 places, 147 transitions, 502 flow. Second operand 5 states and 664 transitions. [2022-11-16 10:57:43,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 157 transitions, 577 flow [2022-11-16 10:57:43,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 157 transitions, 566 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 10:57:43,117 INFO L231 Difference]: Finished difference. Result has 169 places, 150 transitions, 523 flow [2022-11-16 10:57:43,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=169, PETRI_TRANSITIONS=150} [2022-11-16 10:57:43,120 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 38 predicate places. [2022-11-16 10:57:43,120 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 150 transitions, 523 flow [2022-11-16 10:57:43,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 10:57:43,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:43,121 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:43,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:57:43,121 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:43,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:43,122 INFO L85 PathProgramCache]: Analyzing trace with hash -952249032, now seen corresponding path program 1 times [2022-11-16 10:57:43,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:43,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783332879] [2022-11-16 10:57:43,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:43,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 10:57:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783332879] [2022-11-16 10:57:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783332879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:43,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:43,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:43,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804469063] [2022-11-16 10:57:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:43,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 150 [2022-11-16 10:57:43,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 150 transitions, 523 flow. Second operand has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 10:57:43,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:43,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 150 [2022-11-16 10:57:43,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:43,345 INFO L130 PetriNetUnfolder]: 60/548 cut-off events. [2022-11-16 10:57:43,345 INFO L131 PetriNetUnfolder]: For 486/486 co-relation queries the response was YES. [2022-11-16 10:57:43,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 548 events. 60/548 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2370 event pairs, 13 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 1120. Up to 83 conditions per place. [2022-11-16 10:57:43,350 INFO L137 encePairwiseOnDemand]: 143/150 looper letters, 21 selfloop transitions, 11 changer transitions 1/154 dead transitions. [2022-11-16 10:57:43,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 154 transitions, 603 flow [2022-11-16 10:57:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2022-11-16 10:57:43,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8653333333333333 [2022-11-16 10:57:43,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2022-11-16 10:57:43,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2022-11-16 10:57:43,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:43,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2022-11-16 10:57:43,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states 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 10:57:43,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:43,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:43,359 INFO L175 Difference]: Start difference. First operand has 169 places, 150 transitions, 523 flow. Second operand 5 states and 649 transitions. [2022-11-16 10:57:43,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 154 transitions, 603 flow [2022-11-16 10:57:43,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 154 transitions, 596 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 10:57:43,365 INFO L231 Difference]: Finished difference. Result has 170 places, 150 transitions, 546 flow [2022-11-16 10:57:43,366 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=170, PETRI_TRANSITIONS=150} [2022-11-16 10:57:43,367 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 39 predicate places. [2022-11-16 10:57:43,367 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 150 transitions, 546 flow [2022-11-16 10:57:43,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 10:57:43,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:43,368 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:43,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:57:43,373 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1739499280, now seen corresponding path program 1 times [2022-11-16 10:57:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:43,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980897424] [2022-11-16 10:57:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:43,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:43,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980897424] [2022-11-16 10:57:43,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980897424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:43,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809602865] [2022-11-16 10:57:43,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:43,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:43,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:43,582 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:43,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:57:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:43,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:57:43,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 10:57:43,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:43,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809602865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:43,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:43,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-11-16 10:57:43,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316893761] [2022-11-16 10:57:43,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:57:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:57:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:57:43,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 10:57:43,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 150 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 10:57:43,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:43,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 10:57:43,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:44,047 INFO L130 PetriNetUnfolder]: 76/589 cut-off events. [2022-11-16 10:57:44,047 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2022-11-16 10:57:44,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 589 events. 76/589 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2831 event pairs, 5 based on Foata normal form. 13/597 useless extension candidates. Maximal degree in co-relation 1252. Up to 62 conditions per place. [2022-11-16 10:57:44,052 INFO L137 encePairwiseOnDemand]: 137/150 looper letters, 25 selfloop transitions, 19 changer transitions 0/155 dead transitions. [2022-11-16 10:57:44,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 155 transitions, 652 flow [2022-11-16 10:57:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:57:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:57:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 992 transitions. [2022-11-16 10:57:44,055 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2022-11-16 10:57:44,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 992 transitions. [2022-11-16 10:57:44,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 992 transitions. [2022-11-16 10:57:44,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:44,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 992 transitions. [2022-11-16 10:57:44,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 10:57:44,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:44,062 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:44,062 INFO L175 Difference]: Start difference. First operand has 170 places, 150 transitions, 546 flow. Second operand 8 states and 992 transitions. [2022-11-16 10:57:44,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 155 transitions, 652 flow [2022-11-16 10:57:44,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 155 transitions, 630 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 10:57:44,068 INFO L231 Difference]: Finished difference. Result has 171 places, 149 transitions, 584 flow [2022-11-16 10:57:44,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=584, PETRI_PLACES=171, PETRI_TRANSITIONS=149} [2022-11-16 10:57:44,070 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 40 predicate places. [2022-11-16 10:57:44,070 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 149 transitions, 584 flow [2022-11-16 10:57:44,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states 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 10:57:44,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:44,071 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:44,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:44,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 10:57:44,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:44,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:44,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1647523225, now seen corresponding path program 1 times [2022-11-16 10:57:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:44,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845152722] [2022-11-16 10:57:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:44,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:57:44,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845152722] [2022-11-16 10:57:44,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845152722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:44,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:44,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197242522] [2022-11-16 10:57:44,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:44,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-16 10:57:44,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 149 transitions, 584 flow. Second operand has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 10:57:44,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:44,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-16 10:57:44,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:44,509 INFO L130 PetriNetUnfolder]: 42/481 cut-off events. [2022-11-16 10:57:44,509 INFO L131 PetriNetUnfolder]: For 425/425 co-relation queries the response was YES. [2022-11-16 10:57:44,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 481 events. 42/481 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1735 event pairs, 3 based on Foata normal form. 3/482 useless extension candidates. Maximal degree in co-relation 995. Up to 31 conditions per place. [2022-11-16 10:57:44,513 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 12 selfloop transitions, 8 changer transitions 0/152 dead transitions. [2022-11-16 10:57:44,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 152 transitions, 634 flow [2022-11-16 10:57:44,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:44,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 663 transitions. [2022-11-16 10:57:44,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.884 [2022-11-16 10:57:44,516 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 663 transitions. [2022-11-16 10:57:44,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 663 transitions. [2022-11-16 10:57:44,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:44,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 663 transitions. [2022-11-16 10:57:44,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 10:57:44,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:44,521 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:44,521 INFO L175 Difference]: Start difference. First operand has 171 places, 149 transitions, 584 flow. Second operand 5 states and 663 transitions. [2022-11-16 10:57:44,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 152 transitions, 634 flow [2022-11-16 10:57:44,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 152 transitions, 605 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 10:57:44,528 INFO L231 Difference]: Finished difference. Result has 169 places, 149 transitions, 575 flow [2022-11-16 10:57:44,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=169, PETRI_TRANSITIONS=149} [2022-11-16 10:57:44,529 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 38 predicate places. [2022-11-16 10:57:44,529 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 149 transitions, 575 flow [2022-11-16 10:57:44,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.25) internal successors, (529), 4 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 10:57:44,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:44,530 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:44,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 10:57:44,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:44,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:44,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1237721252, now seen corresponding path program 1 times [2022-11-16 10:57:44,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:44,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143725327] [2022-11-16 10:57:44,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:44,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:44,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143725327] [2022-11-16 10:57:44,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143725327] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:44,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239897409] [2022-11-16 10:57:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:44,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:44,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:44,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:44,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:57:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:44,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 10:57:44,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:44,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:44,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239897409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:44,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:44,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 10:57:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706002451] [2022-11-16 10:57:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:44,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 10:57:44,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:44,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 10:57:44,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 10:57:44,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 150 [2022-11-16 10:57:44,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 149 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 10:57:44,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:44,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 150 [2022-11-16 10:57:44,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:45,061 INFO L130 PetriNetUnfolder]: 43/491 cut-off events. [2022-11-16 10:57:45,062 INFO L131 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2022-11-16 10:57:45,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 491 events. 43/491 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1778 event pairs, 5 based on Foata normal form. 3/492 useless extension candidates. Maximal degree in co-relation 992. Up to 32 conditions per place. [2022-11-16 10:57:45,066 INFO L137 encePairwiseOnDemand]: 146/150 looper letters, 13 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2022-11-16 10:57:45,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 150 transitions, 615 flow [2022-11-16 10:57:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 10:57:45,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 10:57:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 531 transitions. [2022-11-16 10:57:45,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-11-16 10:57:45,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 531 transitions. [2022-11-16 10:57:45,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 531 transitions. [2022-11-16 10:57:45,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:45,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 531 transitions. [2022-11-16 10:57:45,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 132.75) internal successors, (531), 4 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 10:57:45,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 10:57:45,072 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states 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 10:57:45,073 INFO L175 Difference]: Start difference. First operand has 169 places, 149 transitions, 575 flow. Second operand 4 states and 531 transitions. [2022-11-16 10:57:45,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 150 transitions, 615 flow [2022-11-16 10:57:45,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 150 transitions, 603 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:57:45,079 INFO L231 Difference]: Finished difference. Result has 168 places, 148 transitions, 569 flow [2022-11-16 10:57:45,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=569, PETRI_PLACES=168, PETRI_TRANSITIONS=148} [2022-11-16 10:57:45,080 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 37 predicate places. [2022-11-16 10:57:45,080 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 148 transitions, 569 flow [2022-11-16 10:57:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.8) internal successors, (659), 5 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 10:57:45,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:45,081 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:45,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:45,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:45,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:45,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1524416366, now seen corresponding path program 1 times [2022-11-16 10:57:45,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:45,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105518843] [2022-11-16 10:57:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:45,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:57:45,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:45,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105518843] [2022-11-16 10:57:45,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105518843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:45,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:45,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:57:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960089606] [2022-11-16 10:57:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:45,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:57:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:57:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:57:45,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-11-16 10:57:45,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 148 transitions, 569 flow. Second operand has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 10:57:45,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:45,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-11-16 10:57:45,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:45,572 INFO L130 PetriNetUnfolder]: 89/585 cut-off events. [2022-11-16 10:57:45,572 INFO L131 PetriNetUnfolder]: For 488/489 co-relation queries the response was YES. [2022-11-16 10:57:45,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 585 events. 89/585 cut-off events. For 488/489 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2966 event pairs, 9 based on Foata normal form. 8/582 useless extension candidates. Maximal degree in co-relation 1225. Up to 66 conditions per place. [2022-11-16 10:57:45,577 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 14 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2022-11-16 10:57:45,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 151 transitions, 620 flow [2022-11-16 10:57:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:57:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:57:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 655 transitions. [2022-11-16 10:57:45,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-11-16 10:57:45,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 655 transitions. [2022-11-16 10:57:45,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 655 transitions. [2022-11-16 10:57:45,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:45,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 655 transitions. [2022-11-16 10:57:45,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 0 states have call successors, (0), 0 states 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 10:57:45,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:45,584 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states 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 10:57:45,584 INFO L175 Difference]: Start difference. First operand has 168 places, 148 transitions, 569 flow. Second operand 5 states and 655 transitions. [2022-11-16 10:57:45,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 151 transitions, 620 flow [2022-11-16 10:57:45,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 151 transitions, 610 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:57:45,591 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 579 flow [2022-11-16 10:57:45,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=579, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2022-11-16 10:57:45,593 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 38 predicate places. [2022-11-16 10:57:45,593 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 579 flow [2022-11-16 10:57:45,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 10:57:45,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:45,594 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:45,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 10:57:45,594 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:45,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:45,595 INFO L85 PathProgramCache]: Analyzing trace with hash 458033767, now seen corresponding path program 1 times [2022-11-16 10:57:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:45,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964954870] [2022-11-16 10:57:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:45,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,746 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:45,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:45,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964954870] [2022-11-16 10:57:45,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964954870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:57:45,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751582494] [2022-11-16 10:57:45,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:45,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:57:45,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:57:45,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:57:45,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:57:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:45,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:57:45,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:57:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:57:46,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:57:46,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751582494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:46,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:57:46,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:57:46,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008539321] [2022-11-16 10:57:46,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:46,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:57:46,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:46,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:57:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:57:46,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 150 [2022-11-16 10:57:46,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 579 flow. Second operand has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 10:57:46,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:46,012 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 150 [2022-11-16 10:57:46,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:46,218 INFO L130 PetriNetUnfolder]: 85/573 cut-off events. [2022-11-16 10:57:46,219 INFO L131 PetriNetUnfolder]: For 522/523 co-relation queries the response was YES. [2022-11-16 10:57:46,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 573 events. 85/573 cut-off events. For 522/523 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2841 event pairs, 4 based on Foata normal form. 8/570 useless extension candidates. Maximal degree in co-relation 1240. Up to 69 conditions per place. [2022-11-16 10:57:46,222 INFO L137 encePairwiseOnDemand]: 145/150 looper letters, 19 selfloop transitions, 6 changer transitions 1/155 dead transitions. [2022-11-16 10:57:46,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 155 transitions, 648 flow [2022-11-16 10:57:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:57:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:57:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 916 transitions. [2022-11-16 10:57:46,226 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8723809523809524 [2022-11-16 10:57:46,226 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 916 transitions. [2022-11-16 10:57:46,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 916 transitions. [2022-11-16 10:57:46,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:46,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 916 transitions. [2022-11-16 10:57:46,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 states 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 10:57:46,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:57:46,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 150.0) internal successors, (1200), 8 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states 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 10:57:46,233 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 579 flow. Second operand 7 states and 916 transitions. [2022-11-16 10:57:46,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 155 transitions, 648 flow [2022-11-16 10:57:46,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 155 transitions, 636 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:57:46,239 INFO L231 Difference]: Finished difference. Result has 171 places, 147 transitions, 575 flow [2022-11-16 10:57:46,239 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=575, PETRI_PLACES=171, PETRI_TRANSITIONS=147} [2022-11-16 10:57:46,240 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 40 predicate places. [2022-11-16 10:57:46,241 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 147 transitions, 575 flow [2022-11-16 10:57:46,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.66666666666666) internal successors, (778), 6 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 10:57:46,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:57:46,241 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:57:46,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:57:46,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 10:57:46,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-16 10:57:46,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:57:46,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1612989648, now seen corresponding path program 1 times [2022-11-16 10:57:46,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:57:46,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646489459] [2022-11-16 10:57:46,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:57:46,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:57:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:57:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 10:57:46,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:57:46,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646489459] [2022-11-16 10:57:46,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646489459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:57:46,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:57:46,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 10:57:46,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138766305] [2022-11-16 10:57:46,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:57:46,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:57:46,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:57:46,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:57:46,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 10:57:46,579 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 150 [2022-11-16 10:57:46,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 147 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 10:57:46,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:57:46,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 150 [2022-11-16 10:57:46,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:57:46,758 INFO L130 PetriNetUnfolder]: 74/564 cut-off events. [2022-11-16 10:57:46,759 INFO L131 PetriNetUnfolder]: For 693/693 co-relation queries the response was YES. [2022-11-16 10:57:46,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 564 events. 74/564 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2661 event pairs, 4 based on Foata normal form. 9/568 useless extension candidates. Maximal degree in co-relation 1267. Up to 54 conditions per place. [2022-11-16 10:57:46,762 INFO L137 encePairwiseOnDemand]: 141/150 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2022-11-16 10:57:46,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 154 transitions, 674 flow [2022-11-16 10:57:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:57:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:57:46,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 993 transitions. [2022-11-16 10:57:46,765 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8275 [2022-11-16 10:57:46,765 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 993 transitions. [2022-11-16 10:57:46,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 993 transitions. [2022-11-16 10:57:46,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:57:46,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 993 transitions. [2022-11-16 10:57:46,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 124.125) internal successors, (993), 8 states have internal predecessors, (993), 0 states have call successors, (0), 0 states 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 10:57:46,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:46,772 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 150.0) internal successors, (1350), 9 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states 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 10:57:46,772 INFO L175 Difference]: Start difference. First operand has 171 places, 147 transitions, 575 flow. Second operand 8 states and 993 transitions. [2022-11-16 10:57:46,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 154 transitions, 674 flow [2022-11-16 10:57:46,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 154 transitions, 657 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 10:57:46,777 INFO L231 Difference]: Finished difference. Result has 171 places, 0 transitions, 0 flow [2022-11-16 10:57:46,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=171, PETRI_TRANSITIONS=0} [2022-11-16 10:57:46,778 INFO L288 CegarLoopForPetriNet]: 131 programPoint places, 40 predicate places. [2022-11-16 10:57:46,778 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 0 transitions, 0 flow [2022-11-16 10:57:46,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 10:57:46,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-16 10:57:46,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-16 10:57:46,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-16 10:57:46,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-16 10:57:46,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-16 10:57:46,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-16 10:57:46,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-16 10:57:46,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-16 10:57:46,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 18 remaining) [2022-11-16 10:57:46,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-11-16 10:57:46,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-16 10:57:46,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-16 10:57:46,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-16 10:57:46,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-16 10:57:46,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-16 10:57:46,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-16 10:57:46,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-16 10:57:46,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-16 10:57:46,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 10:57:46,785 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:57:46,791 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 10:57:46,791 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:57:46,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:57:46 BasicIcfg [2022-11-16 10:57:46,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:57:46,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:57:46,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:57:46,801 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:57:46,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:57:38" (3/4) ... [2022-11-16 10:57:46,804 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 10:57:46,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 10:57:46,810 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 10:57:46,815 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-16 10:57:46,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 10:57:46,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 10:57:46,816 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:57:46,852 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:57:46,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:57:46,853 INFO L158 Benchmark]: Toolchain (without parser) took 9694.15ms. Allocated memory was 121.6MB in the beginning and 243.3MB in the end (delta: 121.6MB). Free memory was 75.0MB in the beginning and 118.8MB in the end (delta: -43.8MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2022-11-16 10:57:46,853 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:57:46,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.97ms. Allocated memory is still 121.6MB. Free memory was 74.8MB in the beginning and 79.4MB in the end (delta: -4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 10:57:46,854 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.71ms. Allocated memory is still 121.6MB. Free memory was 79.4MB in the beginning and 76.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 10:57:46,854 INFO L158 Benchmark]: Boogie Preprocessor took 56.26ms. Allocated memory is still 121.6MB. Free memory was 76.9MB in the beginning and 75.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:57:46,854 INFO L158 Benchmark]: RCFGBuilder took 623.35ms. Allocated memory is still 121.6MB. Free memory was 75.2MB in the beginning and 58.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 10:57:46,855 INFO L158 Benchmark]: TraceAbstraction took 8164.72ms. Allocated memory was 121.6MB in the beginning and 243.3MB in the end (delta: 121.6MB). Free memory was 57.6MB in the beginning and 121.9MB in the end (delta: -64.4MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2022-11-16 10:57:46,855 INFO L158 Benchmark]: Witness Printer took 51.98ms. Allocated memory is still 243.3MB. Free memory was 121.9MB in the beginning and 118.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:57:46,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.97ms. Allocated memory is still 121.6MB. Free memory was 74.8MB in the beginning and 79.4MB in the end (delta: -4.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.71ms. Allocated memory is still 121.6MB. Free memory was 79.4MB in the beginning and 76.9MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.26ms. Allocated memory is still 121.6MB. Free memory was 76.9MB in the beginning and 75.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 623.35ms. Allocated memory is still 121.6MB. Free memory was 75.2MB in the beginning and 58.0MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8164.72ms. Allocated memory was 121.6MB in the beginning and 243.3MB in the end (delta: 121.6MB). Free memory was 57.6MB in the beginning and 121.9MB in the end (delta: -64.4MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * Witness Printer took 51.98ms. Allocated memory is still 243.3MB. Free memory was 121.9MB in the beginning and 118.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 882]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 885]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 897]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 900]: 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 5 procedures, 202 locations, 18 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: 7.9s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 257 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 257 mSDsluCounter, 216 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 632 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 94 mSDtfsCounter, 632 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 480 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=584occurred in iteration=10, InterpolantAutomatonStates: 85, 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, 2.6s InterpolantComputationTime, 1748 NumberOfCodeBlocks, 1748 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1729 ConstructedInterpolants, 0 QuantifiedInterpolants, 2799 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1060 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 90/128 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 10:57:46,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0606cf17-a067-4c79-8ee2-d25d2be457e5/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