./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/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_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/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_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:05:16,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:05:16,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:05:16,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:05:16,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:05:16,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:05:16,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:05:16,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:05:16,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:05:16,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:05:16,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:05:16,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:05:16,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:05:16,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:05:16,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:05:16,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:05:16,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:05:16,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:05:16,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:05:16,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:05:16,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:05:16,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:05:16,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:05:16,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:05:16,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:05:16,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:05:16,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:05:16,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:05:16,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:05:16,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:05:16,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:05:16,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:05:16,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:05:16,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:05:16,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:05:16,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:05:16,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:05:16,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:05:16,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:05:16,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:05:16,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:05:16,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:05:16,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:05:16,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:05:16,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:05:16,898 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:05:16,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:05:16,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:05:16,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:05:16,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:05:16,902 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:05:16,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:05:16,903 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:05:16,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:05:16,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:05:16,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:05:16,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:05:16,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:05:16,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:05:16,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:05:16,906 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:05:16,906 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:05:16,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:05:16,907 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:05:16,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:05:16,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:05:16,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:05:16,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:05:16,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:16,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:05:16,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:05:16,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:05:16,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:05:16,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:05:16,912 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:05:16,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:05:16,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:05:16,913 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_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-11-16 12:05:17,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:05:17,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:05:17,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:05:17,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:05:17,356 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:05:17,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-16 12:05:17,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/data/2b029f818/29a2b892e7294d09bd5ca77b98ab6e78/FLAG79ca0bf4a [2022-11-16 12:05:18,000 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:05:18,001 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-16 12:05:18,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/data/2b029f818/29a2b892e7294d09bd5ca77b98ab6e78/FLAG79ca0bf4a [2022-11-16 12:05:18,323 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/data/2b029f818/29a2b892e7294d09bd5ca77b98ab6e78 [2022-11-16 12:05:18,326 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:05:18,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:05:18,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:18,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:05:18,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:05:18,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474dbd12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18, skipping insertion in model container [2022-11-16 12:05:18,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:05:18,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:05:18,643 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_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-16 12:05:18,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:18,661 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:05:18,691 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_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-16 12:05:18,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:05:18,713 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:05:18,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18 WrapperNode [2022-11-16 12:05:18,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:05:18,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:18,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:05:18,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:05:18,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,810 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 201 [2022-11-16 12:05:18,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:05:18,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:05:18,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:05:18,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:05:18,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,896 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:05:18,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:05:18,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:05:18,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:05:18,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (1/1) ... [2022-11-16 12:05:18,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:05:18,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:18,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:05:18,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:05:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:05:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:05:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:05:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:05:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:05:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:05:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:05:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:05:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:05:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:05:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:05:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:05:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:05:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:05:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:05:18,995 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:05:19,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:05:19,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:05:19,733 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:05:19,745 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:05:19,746 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-16 12:05:19,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:19 BoogieIcfgContainer [2022-11-16 12:05:19,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:05:19,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:05:19,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:05:19,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:05:19,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:05:18" (1/3) ... [2022-11-16 12:05:19,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702cba84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:19, skipping insertion in model container [2022-11-16 12:05:19,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:05:18" (2/3) ... [2022-11-16 12:05:19,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702cba84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:05:19, skipping insertion in model container [2022-11-16 12:05:19,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:19" (3/3) ... [2022-11-16 12:05:19,765 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-11-16 12:05:19,773 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:05:19,782 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:05:19,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 12:05:19,783 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:05:19,906 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:05:20,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 321 transitions, 666 flow [2022-11-16 12:05:20,265 INFO L130 PetriNetUnfolder]: 25/318 cut-off events. [2022-11-16 12:05:20,265 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:05:20,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 25/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 263 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 258. Up to 2 conditions per place. [2022-11-16 12:05:20,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 321 transitions, 666 flow [2022-11-16 12:05:20,292 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 282 transitions, 579 flow [2022-11-16 12:05:20,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:05:20,333 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;@63f314fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:05:20,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-16 12:05:20,360 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-16 12:05:20,360 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:05:20,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:20,362 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] [2022-11-16 12:05:20,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:20,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1327915382, now seen corresponding path program 1 times [2022-11-16 12:05:20,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:20,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551998595] [2022-11-16 12:05:20,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:20,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:20,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:20,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551998595] [2022-11-16 12:05:20,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551998595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:20,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:20,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:20,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737210464] [2022-11-16 12:05:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:20,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:20,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-16 12:05:20,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:20,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:20,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-16 12:05:20,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:21,348 INFO L130 PetriNetUnfolder]: 13/417 cut-off events. [2022-11-16 12:05:21,348 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 12:05:21,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 417 events. 13/417 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 877 event pairs, 0 based on Foata normal form. 28/401 useless extension candidates. Maximal degree in co-relation 458. Up to 57 conditions per place. [2022-11-16 12:05:21,355 INFO L137 encePairwiseOnDemand]: 278/321 looper letters, 74 selfloop transitions, 19 changer transitions 9/306 dead transitions. [2022-11-16 12:05:21,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 306 transitions, 828 flow [2022-11-16 12:05:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:05:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1365 transitions. [2022-11-16 12:05:21,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8504672897196262 [2022-11-16 12:05:21,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1365 transitions. [2022-11-16 12:05:21,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1365 transitions. [2022-11-16 12:05:21,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:21,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1365 transitions. [2022-11-16 12:05:21,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.0) internal successors, (1365), 5 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:21,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:21,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:21,427 INFO L175 Difference]: Start difference. First operand has 269 places, 282 transitions, 579 flow. Second operand 5 states and 1365 transitions. [2022-11-16 12:05:21,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 306 transitions, 828 flow [2022-11-16 12:05:21,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 306 transitions, 810 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:21,447 INFO L231 Difference]: Finished difference. Result has 271 places, 272 transitions, 661 flow [2022-11-16 12:05:21,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=661, PETRI_PLACES=271, PETRI_TRANSITIONS=272} [2022-11-16 12:05:21,455 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 2 predicate places. [2022-11-16 12:05:21,456 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 272 transitions, 661 flow [2022-11-16 12:05:21,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 249.5) internal successors, (998), 4 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:21,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:21,458 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 12:05:21,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:05:21,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1246802243, now seen corresponding path program 1 times [2022-11-16 12:05:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:21,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112935852] [2022-11-16 12:05:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:21,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:21,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:21,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112935852] [2022-11-16 12:05:21,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112935852] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:21,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724213437] [2022-11-16 12:05:21,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:21,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:21,737 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:21,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:05:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:21,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:21,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:22,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:22,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724213437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:22,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:22,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:05:22,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856027985] [2022-11-16 12:05:22,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:22,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:05:22,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:22,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:05:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:05:22,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-16 12:05:22,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 272 transitions, 661 flow. Second operand has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:22,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:22,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-16 12:05:22,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:23,193 INFO L130 PetriNetUnfolder]: 31/865 cut-off events. [2022-11-16 12:05:23,193 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-11-16 12:05:23,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 865 events. 31/865 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3386 event pairs, 0 based on Foata normal form. 12/812 useless extension candidates. Maximal degree in co-relation 476. Up to 46 conditions per place. [2022-11-16 12:05:23,203 INFO L137 encePairwiseOnDemand]: 290/321 looper letters, 137 selfloop transitions, 84 changer transitions 0/425 dead transitions. [2022-11-16 12:05:23,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 425 transitions, 1539 flow [2022-11-16 12:05:23,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:05:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:05:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4697 transitions. [2022-11-16 12:05:23,216 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8129110418830044 [2022-11-16 12:05:23,217 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4697 transitions. [2022-11-16 12:05:23,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4697 transitions. [2022-11-16 12:05:23,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:23,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4697 transitions. [2022-11-16 12:05:23,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 260.94444444444446) internal successors, (4697), 18 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:23,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:23,252 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:23,253 INFO L175 Difference]: Start difference. First operand has 271 places, 272 transitions, 661 flow. Second operand 18 states and 4697 transitions. [2022-11-16 12:05:23,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 425 transitions, 1539 flow [2022-11-16 12:05:23,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 425 transitions, 1528 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:05:23,272 INFO L231 Difference]: Finished difference. Result has 282 places, 329 transitions, 1152 flow [2022-11-16 12:05:23,273 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1152, PETRI_PLACES=282, PETRI_TRANSITIONS=329} [2022-11-16 12:05:23,274 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 13 predicate places. [2022-11-16 12:05:23,274 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 329 transitions, 1152 flow [2022-11-16 12:05:23,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 250.66666666666666) internal successors, (3008), 12 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:23,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:23,278 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] [2022-11-16 12:05:23,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:23,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:23,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:23,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:23,486 INFO L85 PathProgramCache]: Analyzing trace with hash -3835432, now seen corresponding path program 1 times [2022-11-16 12:05:23,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:23,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738273] [2022-11-16 12:05:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:23,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:23,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:23,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738273] [2022-11-16 12:05:23,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:23,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771603074] [2022-11-16 12:05:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:23,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:23,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:23,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:05:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:23,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:23,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:23,952 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 12:05:23,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:23,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771603074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:23,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:05:23,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:05:23,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081107791] [2022-11-16 12:05:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:23,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:05:23,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:05:23,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:23,957 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 321 [2022-11-16 12:05:23,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 329 transitions, 1152 flow. Second operand has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:23,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:23,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 321 [2022-11-16 12:05:23,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:24,389 INFO L130 PetriNetUnfolder]: 31/849 cut-off events. [2022-11-16 12:05:24,390 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2022-11-16 12:05:24,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 849 events. 31/849 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3263 event pairs, 0 based on Foata normal form. 16/800 useless extension candidates. Maximal degree in co-relation 976. Up to 84 conditions per place. [2022-11-16 12:05:24,397 INFO L137 encePairwiseOnDemand]: 298/321 looper letters, 75 selfloop transitions, 59 changer transitions 0/338 dead transitions. [2022-11-16 12:05:24,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 338 transitions, 1376 flow [2022-11-16 12:05:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:05:24,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:05:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1829 transitions. [2022-11-16 12:05:24,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8139741878059635 [2022-11-16 12:05:24,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1829 transitions. [2022-11-16 12:05:24,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1829 transitions. [2022-11-16 12:05:24,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:24,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1829 transitions. [2022-11-16 12:05:24,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 261.2857142857143) internal successors, (1829), 7 states have internal predecessors, (1829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:24,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:24,417 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:24,418 INFO L175 Difference]: Start difference. First operand has 282 places, 329 transitions, 1152 flow. Second operand 7 states and 1829 transitions. [2022-11-16 12:05:24,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 338 transitions, 1376 flow [2022-11-16 12:05:24,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 338 transitions, 1218 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:24,434 INFO L231 Difference]: Finished difference. Result has 275 places, 313 transitions, 1004 flow [2022-11-16 12:05:24,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1004, PETRI_PLACES=275, PETRI_TRANSITIONS=313} [2022-11-16 12:05:24,437 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 6 predicate places. [2022-11-16 12:05:24,438 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 313 transitions, 1004 flow [2022-11-16 12:05:24,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.33333333333334) internal successors, (1502), 6 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:24,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:24,439 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:24,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:24,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:24,645 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 517403306, now seen corresponding path program 2 times [2022-11-16 12:05:24,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:24,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722559777] [2022-11-16 12:05:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:24,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:25,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:25,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722559777] [2022-11-16 12:05:25,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722559777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:25,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935316392] [2022-11-16 12:05:25,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:25,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:25,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:25,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:25,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:05:25,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:05:25,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:25,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:05:25,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:05:25,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:25,567 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:05:25,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935316392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:25,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:25,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:05:25,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396962517] [2022-11-16 12:05:25,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:25,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:05:25,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:25,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:05:25,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:05:25,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 321 [2022-11-16 12:05:25,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 313 transitions, 1004 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:25,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:25,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 321 [2022-11-16 12:05:25,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:27,099 INFO L130 PetriNetUnfolder]: 183/1793 cut-off events. [2022-11-16 12:05:27,099 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2022-11-16 12:05:27,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 1793 events. 183/1793 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 10603 event pairs, 84 based on Foata normal form. 8/1542 useless extension candidates. Maximal degree in co-relation 1554. Up to 69 conditions per place. [2022-11-16 12:05:27,115 INFO L137 encePairwiseOnDemand]: 286/321 looper letters, 230 selfloop transitions, 109 changer transitions 0/513 dead transitions. [2022-11-16 12:05:27,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 513 transitions, 2210 flow [2022-11-16 12:05:27,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:05:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:05:27,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5555 transitions. [2022-11-16 12:05:27,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7210539979231568 [2022-11-16 12:05:27,131 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5555 transitions. [2022-11-16 12:05:27,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5555 transitions. [2022-11-16 12:05:27,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:27,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5555 transitions. [2022-11-16 12:05:27,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 231.45833333333334) internal successors, (5555), 24 states have internal predecessors, (5555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:27,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:27,169 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 321.0) internal successors, (8025), 25 states have internal predecessors, (8025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:27,169 INFO L175 Difference]: Start difference. First operand has 275 places, 313 transitions, 1004 flow. Second operand 24 states and 5555 transitions. [2022-11-16 12:05:27,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 513 transitions, 2210 flow [2022-11-16 12:05:27,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 513 transitions, 2086 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:05:27,192 INFO L231 Difference]: Finished difference. Result has 286 places, 335 transitions, 1225 flow [2022-11-16 12:05:27,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1225, PETRI_PLACES=286, PETRI_TRANSITIONS=335} [2022-11-16 12:05:27,195 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 17 predicate places. [2022-11-16 12:05:27,195 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 335 transitions, 1225 flow [2022-11-16 12:05:27,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:27,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:27,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:27,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:27,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:27,425 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:27,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1002795852, now seen corresponding path program 1 times [2022-11-16 12:05:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:27,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440160749] [2022-11-16 12:05:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:27,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:27,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440160749] [2022-11-16 12:05:27,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440160749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:27,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:27,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201879044] [2022-11-16 12:05:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:27,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:27,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:27,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:27,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:27,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 12:05:27,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 335 transitions, 1225 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:27,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:27,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 12:05:27,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:28,328 INFO L130 PetriNetUnfolder]: 386/2437 cut-off events. [2022-11-16 12:05:28,329 INFO L131 PetriNetUnfolder]: For 215/264 co-relation queries the response was YES. [2022-11-16 12:05:28,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 2437 events. 386/2437 cut-off events. For 215/264 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 17985 event pairs, 147 based on Foata normal form. 0/2185 useless extension candidates. Maximal degree in co-relation 911. Up to 477 conditions per place. [2022-11-16 12:05:28,354 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 32 selfloop transitions, 4 changer transitions 0/353 dead transitions. [2022-11-16 12:05:28,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 353 transitions, 1344 flow [2022-11-16 12:05:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:05:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1453 transitions. [2022-11-16 12:05:28,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9052959501557633 [2022-11-16 12:05:28,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1453 transitions. [2022-11-16 12:05:28,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1453 transitions. [2022-11-16 12:05:28,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:28,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1453 transitions. [2022-11-16 12:05:28,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.6) internal successors, (1453), 5 states have internal predecessors, (1453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:28,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:28,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:28,370 INFO L175 Difference]: Start difference. First operand has 286 places, 335 transitions, 1225 flow. Second operand 5 states and 1453 transitions. [2022-11-16 12:05:28,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 353 transitions, 1344 flow [2022-11-16 12:05:28,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 353 transitions, 1177 flow, removed 17 selfloop flow, removed 15 redundant places. [2022-11-16 12:05:28,380 INFO L231 Difference]: Finished difference. Result has 278 places, 338 transitions, 1088 flow [2022-11-16 12:05:28,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1088, PETRI_PLACES=278, PETRI_TRANSITIONS=338} [2022-11-16 12:05:28,383 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 9 predicate places. [2022-11-16 12:05:28,384 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 338 transitions, 1088 flow [2022-11-16 12:05:28,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:28,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:28,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:28,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:05:28,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:28,386 INFO L85 PathProgramCache]: Analyzing trace with hash 219156758, now seen corresponding path program 1 times [2022-11-16 12:05:28,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:28,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739296900] [2022-11-16 12:05:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:28,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:28,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:28,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739296900] [2022-11-16 12:05:28,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739296900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:28,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:28,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:05:28,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480698723] [2022-11-16 12:05:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:28,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:05:28,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:05:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:05:28,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 12:05:28,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 338 transitions, 1088 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:28,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:28,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 12:05:28,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:29,460 INFO L130 PetriNetUnfolder]: 526/2514 cut-off events. [2022-11-16 12:05:29,460 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2022-11-16 12:05:29,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 2514 events. 526/2514 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 20614 event pairs, 252 based on Foata normal form. 0/2157 useless extension candidates. Maximal degree in co-relation 3359. Up to 666 conditions per place. [2022-11-16 12:05:29,501 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 4 changer transitions 0/355 dead transitions. [2022-11-16 12:05:29,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 355 transitions, 1202 flow [2022-11-16 12:05:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:05:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:05:29,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1452 transitions. [2022-11-16 12:05:29,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9046728971962616 [2022-11-16 12:05:29,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1452 transitions. [2022-11-16 12:05:29,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1452 transitions. [2022-11-16 12:05:29,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:29,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1452 transitions. [2022-11-16 12:05:29,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.4) internal successors, (1452), 5 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:29,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:29,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:29,515 INFO L175 Difference]: Start difference. First operand has 278 places, 338 transitions, 1088 flow. Second operand 5 states and 1452 transitions. [2022-11-16 12:05:29,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 355 transitions, 1202 flow [2022-11-16 12:05:29,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 355 transitions, 1200 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:05:29,525 INFO L231 Difference]: Finished difference. Result has 284 places, 341 transitions, 1116 flow [2022-11-16 12:05:29,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1116, PETRI_PLACES=284, PETRI_TRANSITIONS=341} [2022-11-16 12:05:29,528 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 15 predicate places. [2022-11-16 12:05:29,529 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 341 transitions, 1116 flow [2022-11-16 12:05:29,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:29,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:29,530 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:29,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:05:29,530 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:29,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1816243509, now seen corresponding path program 1 times [2022-11-16 12:05:29,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:29,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315899459] [2022-11-16 12:05:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:29,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:29,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:29,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315899459] [2022-11-16 12:05:29,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315899459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:29,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035705258] [2022-11-16 12:05:29,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:29,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:29,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:29,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:05:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:29,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:05:29,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:05:30,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:30,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035705258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:30,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:05:30,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 12:05:30,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210989774] [2022-11-16 12:05:30,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:30,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:05:30,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:05:30,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:05:30,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 321 [2022-11-16 12:05:30,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 341 transitions, 1116 flow. Second operand has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:30,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:30,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 321 [2022-11-16 12:05:30,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:31,779 INFO L130 PetriNetUnfolder]: 623/3966 cut-off events. [2022-11-16 12:05:31,779 INFO L131 PetriNetUnfolder]: For 891/891 co-relation queries the response was YES. [2022-11-16 12:05:31,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6863 conditions, 3966 events. 623/3966 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 32114 event pairs, 432 based on Foata normal form. 0/3549 useless extension candidates. Maximal degree in co-relation 6197. Up to 1172 conditions per place. [2022-11-16 12:05:31,846 INFO L137 encePairwiseOnDemand]: 297/321 looper letters, 196 selfloop transitions, 63 changer transitions 0/470 dead transitions. [2022-11-16 12:05:31,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 470 transitions, 2104 flow [2022-11-16 12:05:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:05:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:05:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2745 transitions. [2022-11-16 12:05:31,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7774001699235344 [2022-11-16 12:05:31,858 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2745 transitions. [2022-11-16 12:05:31,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2745 transitions. [2022-11-16 12:05:31,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:31,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2745 transitions. [2022-11-16 12:05:31,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 249.54545454545453) internal successors, (2745), 11 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:31,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:31,878 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 321.0) internal successors, (3852), 12 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:31,879 INFO L175 Difference]: Start difference. First operand has 284 places, 341 transitions, 1116 flow. Second operand 11 states and 2745 transitions. [2022-11-16 12:05:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 470 transitions, 2104 flow [2022-11-16 12:05:31,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 470 transitions, 2102 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:05:31,899 INFO L231 Difference]: Finished difference. Result has 296 places, 368 transitions, 1391 flow [2022-11-16 12:05:31,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1391, PETRI_PLACES=296, PETRI_TRANSITIONS=368} [2022-11-16 12:05:31,901 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 27 predicate places. [2022-11-16 12:05:31,901 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 368 transitions, 1391 flow [2022-11-16 12:05:31,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.28571428571428) internal successors, (1682), 7 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:31,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:31,903 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:31,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:32,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:32,110 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -176565671, now seen corresponding path program 1 times [2022-11-16 12:05:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:32,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326642227] [2022-11-16 12:05:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:32,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326642227] [2022-11-16 12:05:32,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326642227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:32,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:32,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:05:32,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382993528] [2022-11-16 12:05:32,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:32,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:05:32,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:32,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:05:32,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:32,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 321 [2022-11-16 12:05:32,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 368 transitions, 1391 flow. Second operand has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:32,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:32,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 321 [2022-11-16 12:05:32,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:34,305 INFO L130 PetriNetUnfolder]: 1259/5239 cut-off events. [2022-11-16 12:05:34,305 INFO L131 PetriNetUnfolder]: For 2027/2118 co-relation queries the response was YES. [2022-11-16 12:05:34,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9493 conditions, 5239 events. 1259/5239 cut-off events. For 2027/2118 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 48747 event pairs, 814 based on Foata normal form. 91/4593 useless extension candidates. Maximal degree in co-relation 8055. Up to 1778 conditions per place. [2022-11-16 12:05:34,372 INFO L137 encePairwiseOnDemand]: 293/321 looper letters, 224 selfloop transitions, 70 changer transitions 0/504 dead transitions. [2022-11-16 12:05:34,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 504 transitions, 2418 flow [2022-11-16 12:05:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:05:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:05:34,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3872 transitions. [2022-11-16 12:05:34,389 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7538940809968847 [2022-11-16 12:05:34,389 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3872 transitions. [2022-11-16 12:05:34,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3872 transitions. [2022-11-16 12:05:34,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:34,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3872 transitions. [2022-11-16 12:05:34,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 242.0) internal successors, (3872), 16 states have internal predecessors, (3872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:34,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:34,417 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 321.0) internal successors, (5457), 17 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:34,417 INFO L175 Difference]: Start difference. First operand has 296 places, 368 transitions, 1391 flow. Second operand 16 states and 3872 transitions. [2022-11-16 12:05:34,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 504 transitions, 2418 flow [2022-11-16 12:05:34,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 504 transitions, 2413 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:05:34,437 INFO L231 Difference]: Finished difference. Result has 312 places, 377 transitions, 1593 flow [2022-11-16 12:05:34,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1593, PETRI_PLACES=312, PETRI_TRANSITIONS=377} [2022-11-16 12:05:34,440 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 43 predicate places. [2022-11-16 12:05:34,440 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 377 transitions, 1593 flow [2022-11-16 12:05:34,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.625) internal successors, (1877), 8 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:34,443 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:34,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:34,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:05:34,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:34,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:34,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1178567675, now seen corresponding path program 1 times [2022-11-16 12:05:34,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:34,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325168719] [2022-11-16 12:05:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:34,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:34,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325168719] [2022-11-16 12:05:34,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325168719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:34,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:34,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:05:34,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118220274] [2022-11-16 12:05:34,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:34,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:05:34,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:34,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:05:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:05:34,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-16 12:05:34,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 377 transitions, 1593 flow. Second operand has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:34,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:34,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-16 12:05:34,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:37,141 INFO L130 PetriNetUnfolder]: 3180/9239 cut-off events. [2022-11-16 12:05:37,141 INFO L131 PetriNetUnfolder]: For 2712/2736 co-relation queries the response was YES. [2022-11-16 12:05:37,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17137 conditions, 9239 events. 3180/9239 cut-off events. For 2712/2736 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 89952 event pairs, 793 based on Foata normal form. 198/7989 useless extension candidates. Maximal degree in co-relation 16064. Up to 2952 conditions per place. [2022-11-16 12:05:37,235 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 31 selfloop transitions, 10 changer transitions 0/383 dead transitions. [2022-11-16 12:05:37,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 383 transitions, 1686 flow [2022-11-16 12:05:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:05:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:05:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1684 transitions. [2022-11-16 12:05:37,239 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8743509865005192 [2022-11-16 12:05:37,239 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1684 transitions. [2022-11-16 12:05:37,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1684 transitions. [2022-11-16 12:05:37,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:37,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1684 transitions. [2022-11-16 12:05:37,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.6666666666667) internal successors, (1684), 6 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,250 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,250 INFO L175 Difference]: Start difference. First operand has 312 places, 377 transitions, 1593 flow. Second operand 6 states and 1684 transitions. [2022-11-16 12:05:37,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 383 transitions, 1686 flow [2022-11-16 12:05:37,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 383 transitions, 1598 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 12:05:37,282 INFO L231 Difference]: Finished difference. Result has 309 places, 375 transitions, 1516 flow [2022-11-16 12:05:37,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1516, PETRI_PLACES=309, PETRI_TRANSITIONS=375} [2022-11-16 12:05:37,284 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-16 12:05:37,284 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 375 transitions, 1516 flow [2022-11-16 12:05:37,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 277.8333333333333) internal successors, (1667), 6 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:37,285 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:37,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:05:37,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash 86010365, now seen corresponding path program 1 times [2022-11-16 12:05:37,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:37,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729390040] [2022-11-16 12:05:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:37,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:37,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:37,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729390040] [2022-11-16 12:05:37,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729390040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:37,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34253809] [2022-11-16 12:05:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:37,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:37,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:37,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:37,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:05:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:37,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:37,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:37,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:37,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34253809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:37,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:37,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:05:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577669804] [2022-11-16 12:05:37,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:37,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:05:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:05:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:05:37,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 12:05:37,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 375 transitions, 1516 flow. Second operand has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:37,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:37,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 12:05:37,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:39,930 INFO L130 PetriNetUnfolder]: 1829/7089 cut-off events. [2022-11-16 12:05:39,930 INFO L131 PetriNetUnfolder]: For 2002/2062 co-relation queries the response was YES. [2022-11-16 12:05:39,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14636 conditions, 7089 events. 1829/7089 cut-off events. For 2002/2062 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 70999 event pairs, 256 based on Foata normal form. 141/6583 useless extension candidates. Maximal degree in co-relation 14591. Up to 1045 conditions per place. [2022-11-16 12:05:40,019 INFO L137 encePairwiseOnDemand]: 314/321 looper letters, 78 selfloop transitions, 18 changer transitions 0/450 dead transitions. [2022-11-16 12:05:40,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 450 transitions, 1932 flow [2022-11-16 12:05:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:05:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:05:40,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5193 transitions. [2022-11-16 12:05:40,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8987538940809969 [2022-11-16 12:05:40,033 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5193 transitions. [2022-11-16 12:05:40,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5193 transitions. [2022-11-16 12:05:40,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:40,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5193 transitions. [2022-11-16 12:05:40,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 288.5) internal successors, (5193), 18 states have internal predecessors, (5193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:40,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:40,063 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 321.0) internal successors, (6099), 19 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:40,063 INFO L175 Difference]: Start difference. First operand has 309 places, 375 transitions, 1516 flow. Second operand 18 states and 5193 transitions. [2022-11-16 12:05:40,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 450 transitions, 1932 flow [2022-11-16 12:05:40,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 450 transitions, 1912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:40,093 INFO L231 Difference]: Finished difference. Result has 325 places, 387 transitions, 1602 flow [2022-11-16 12:05:40,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1602, PETRI_PLACES=325, PETRI_TRANSITIONS=387} [2022-11-16 12:05:40,094 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 56 predicate places. [2022-11-16 12:05:40,095 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 387 transitions, 1602 flow [2022-11-16 12:05:40,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 286.5833333333333) internal successors, (3439), 12 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:40,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:40,096 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:40,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:40,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:40,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:40,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:40,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1628645169, now seen corresponding path program 1 times [2022-11-16 12:05:40,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:40,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866711029] [2022-11-16 12:05:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:40,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:40,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866711029] [2022-11-16 12:05:40,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866711029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:40,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968475949] [2022-11-16 12:05:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:40,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:40,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:40,675 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:40,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:05:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:40,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:40,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:40,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:40,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968475949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:40,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:05:40,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:05:40,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433320622] [2022-11-16 12:05:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:40,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:05:40,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:40,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:05:40,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:05:40,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 12:05:40,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 387 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:40,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:40,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 12:05:40,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:42,801 INFO L130 PetriNetUnfolder]: 1714/7059 cut-off events. [2022-11-16 12:05:42,801 INFO L131 PetriNetUnfolder]: For 3616/3700 co-relation queries the response was YES. [2022-11-16 12:05:42,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15306 conditions, 7059 events. 1714/7059 cut-off events. For 3616/3700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 70924 event pairs, 160 based on Foata normal form. 192/6622 useless extension candidates. Maximal degree in co-relation 15233. Up to 1924 conditions per place. [2022-11-16 12:05:42,882 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 36 selfloop transitions, 11 changer transitions 0/401 dead transitions. [2022-11-16 12:05:42,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 401 transitions, 1723 flow [2022-11-16 12:05:42,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:05:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:05:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2020 transitions. [2022-11-16 12:05:42,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989764129951046 [2022-11-16 12:05:42,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2020 transitions. [2022-11-16 12:05:42,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2020 transitions. [2022-11-16 12:05:42,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:42,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2020 transitions. [2022-11-16 12:05:42,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.57142857142856) internal successors, (2020), 7 states have internal predecessors, (2020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,895 INFO L175 Difference]: Start difference. First operand has 325 places, 387 transitions, 1602 flow. Second operand 7 states and 2020 transitions. [2022-11-16 12:05:42,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 401 transitions, 1723 flow [2022-11-16 12:05:42,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 401 transitions, 1691 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:42,916 INFO L231 Difference]: Finished difference. Result has 321 places, 383 transitions, 1565 flow [2022-11-16 12:05:42,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1565, PETRI_PLACES=321, PETRI_TRANSITIONS=383} [2022-11-16 12:05:42,917 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 52 predicate places. [2022-11-16 12:05:42,917 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 383 transitions, 1565 flow [2022-11-16 12:05:42,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:42,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:42,919 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:42,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:43,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:43,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:43,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:43,126 INFO L85 PathProgramCache]: Analyzing trace with hash 59019253, now seen corresponding path program 1 times [2022-11-16 12:05:43,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:43,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094660333] [2022-11-16 12:05:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:43,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:05:43,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:43,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094660333] [2022-11-16 12:05:43,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094660333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:43,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314001589] [2022-11-16 12:05:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:43,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:43,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:43,311 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:43,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:05:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:43,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:05:43,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:05:43,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:05:44,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314001589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:44,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:44,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-16 12:05:44,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689609000] [2022-11-16 12:05:44,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:44,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:05:44,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:44,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:05:44,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:05:44,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 321 [2022-11-16 12:05:44,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 383 transitions, 1565 flow. Second operand has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:44,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:44,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 321 [2022-11-16 12:05:44,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:48,773 INFO L130 PetriNetUnfolder]: 1540/9972 cut-off events. [2022-11-16 12:05:48,773 INFO L131 PetriNetUnfolder]: For 3573/15892 co-relation queries the response was YES. [2022-11-16 12:05:48,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 9972 events. 1540/9972 cut-off events. For 3573/15892 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 104933 event pairs, 335 based on Foata normal form. 279/9723 useless extension candidates. Maximal degree in co-relation 18437. Up to 596 conditions per place. [2022-11-16 12:05:48,884 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 382 selfloop transitions, 154 changer transitions 0/718 dead transitions. [2022-11-16 12:05:48,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 718 transitions, 3926 flow [2022-11-16 12:05:48,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:05:48,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 12:05:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 7927 transitions. [2022-11-16 12:05:48,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6859640013845621 [2022-11-16 12:05:48,896 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 7927 transitions. [2022-11-16 12:05:48,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 7927 transitions. [2022-11-16 12:05:48,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:48,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 7927 transitions. [2022-11-16 12:05:48,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 220.19444444444446) internal successors, (7927), 36 states have internal predecessors, (7927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:48,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:48,938 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:48,938 INFO L175 Difference]: Start difference. First operand has 321 places, 383 transitions, 1565 flow. Second operand 36 states and 7927 transitions. [2022-11-16 12:05:48,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 718 transitions, 3926 flow [2022-11-16 12:05:48,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 718 transitions, 3912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:48,968 INFO L231 Difference]: Finished difference. Result has 360 places, 457 transitions, 2448 flow [2022-11-16 12:05:48,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2448, PETRI_PLACES=360, PETRI_TRANSITIONS=457} [2022-11-16 12:05:48,970 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 91 predicate places. [2022-11-16 12:05:48,970 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 457 transitions, 2448 flow [2022-11-16 12:05:48,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 217.0) internal successors, (4991), 23 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:48,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:48,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:48,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:49,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:49,178 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:49,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:49,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1184057241, now seen corresponding path program 1 times [2022-11-16 12:05:49,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:49,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230935188] [2022-11-16 12:05:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:49,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:05:49,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230935188] [2022-11-16 12:05:49,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230935188] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530889093] [2022-11-16 12:05:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:49,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:49,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:49,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:49,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:05:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:49,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:49,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:05:49,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:05:49,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530889093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:49,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:05:49,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-16 12:05:49,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716121212] [2022-11-16 12:05:49,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:49,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:05:49,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:05:49,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:05:49,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 321 [2022-11-16 12:05:49,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 457 transitions, 2448 flow. Second operand has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:49,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:49,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 321 [2022-11-16 12:05:49,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:53,335 INFO L130 PetriNetUnfolder]: 2743/11312 cut-off events. [2022-11-16 12:05:53,335 INFO L131 PetriNetUnfolder]: For 8085/18935 co-relation queries the response was YES. [2022-11-16 12:05:53,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22496 conditions, 11312 events. 2743/11312 cut-off events. For 8085/18935 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 126761 event pairs, 548 based on Foata normal form. 330/10259 useless extension candidates. Maximal degree in co-relation 22297. Up to 1884 conditions per place. [2022-11-16 12:05:53,476 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 57 selfloop transitions, 15 changer transitions 6/489 dead transitions. [2022-11-16 12:05:53,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 489 transitions, 2744 flow [2022-11-16 12:05:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:05:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:05:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1931 transitions. [2022-11-16 12:05:53,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8593680462839342 [2022-11-16 12:05:53,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1931 transitions. [2022-11-16 12:05:53,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1931 transitions. [2022-11-16 12:05:53,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:53,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1931 transitions. [2022-11-16 12:05:53,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.85714285714283) internal successors, (1931), 7 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,489 INFO L175 Difference]: Start difference. First operand has 360 places, 457 transitions, 2448 flow. Second operand 7 states and 1931 transitions. [2022-11-16 12:05:53,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 489 transitions, 2744 flow [2022-11-16 12:05:53,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 489 transitions, 2646 flow, removed 7 selfloop flow, removed 10 redundant places. [2022-11-16 12:05:53,523 INFO L231 Difference]: Finished difference. Result has 355 places, 453 transitions, 2367 flow [2022-11-16 12:05:53,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2344, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2367, PETRI_PLACES=355, PETRI_TRANSITIONS=453} [2022-11-16 12:05:53,524 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 86 predicate places. [2022-11-16 12:05:53,525 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 453 transitions, 2367 flow [2022-11-16 12:05:53,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:53,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:53,526 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:53,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 12:05:53,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:53,731 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:05:53,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:53,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1304005718, now seen corresponding path program 2 times [2022-11-16 12:05:53,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:53,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546068044] [2022-11-16 12:05:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:53,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:54,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546068044] [2022-11-16 12:05:54,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546068044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:54,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511107866] [2022-11-16 12:05:54,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:05:54,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:54,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:54,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:54,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:05:54,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:05:54,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:54,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:05:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 12:05:54,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-16 12:05:55,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511107866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:55,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:55,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-16 12:05:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246151513] [2022-11-16 12:05:55,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:55,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:05:55,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:05:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:05:55,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 321 [2022-11-16 12:05:55,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 453 transitions, 2367 flow. Second operand has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:05:55,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:55,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 321 [2022-11-16 12:05:55,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:01,630 INFO L130 PetriNetUnfolder]: 8177/24699 cut-off events. [2022-11-16 12:06:01,631 INFO L131 PetriNetUnfolder]: For 10467/10999 co-relation queries the response was YES. [2022-11-16 12:06:01,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50295 conditions, 24699 events. 8177/24699 cut-off events. For 10467/10999 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 282848 event pairs, 807 based on Foata normal form. 251/22530 useless extension candidates. Maximal degree in co-relation 45490. Up to 3654 conditions per place. [2022-11-16 12:06:01,895 INFO L137 encePairwiseOnDemand]: 312/321 looper letters, 105 selfloop transitions, 23 changer transitions 105/546 dead transitions. [2022-11-16 12:06:01,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 546 transitions, 2877 flow [2022-11-16 12:06:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:06:01,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:06:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6202 transitions. [2022-11-16 12:06:01,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8782214670065137 [2022-11-16 12:06:01,906 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6202 transitions. [2022-11-16 12:06:01,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6202 transitions. [2022-11-16 12:06:01,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:01,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6202 transitions. [2022-11-16 12:06:01,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 281.90909090909093) internal successors, (6202), 22 states have internal predecessors, (6202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:01,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:01,941 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 321.0) internal successors, (7383), 23 states have internal predecessors, (7383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:01,941 INFO L175 Difference]: Start difference. First operand has 355 places, 453 transitions, 2367 flow. Second operand 22 states and 6202 transitions. [2022-11-16 12:06:01,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 546 transitions, 2877 flow [2022-11-16 12:06:02,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 546 transitions, 2839 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-16 12:06:02,068 INFO L231 Difference]: Finished difference. Result has 363 places, 352 transitions, 1578 flow [2022-11-16 12:06:02,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=2319, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1578, PETRI_PLACES=363, PETRI_TRANSITIONS=352} [2022-11-16 12:06:02,070 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 94 predicate places. [2022-11-16 12:06:02,070 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 352 transitions, 1578 flow [2022-11-16 12:06:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 280.5625) internal successors, (4489), 16 states have internal predecessors, (4489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:02,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:02,072 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:02,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:02,279 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:06:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:02,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1353052421, now seen corresponding path program 1 times [2022-11-16 12:06:02,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:02,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193079528] [2022-11-16 12:06:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 12:06:02,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193079528] [2022-11-16 12:06:02,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193079528] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013209927] [2022-11-16 12:06:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:02,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:02,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:02,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:06:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:06:02,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 12:06:02,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:06:02,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013209927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:06:02,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:06:02,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:06:02,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705366621] [2022-11-16 12:06:02,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:06:02,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:06:02,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:02,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:06:02,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:06:02,791 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-16 12:06:02,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 352 transitions, 1578 flow. Second operand has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:02,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:02,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-16 12:06:02,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:03,624 INFO L130 PetriNetUnfolder]: 351/2135 cut-off events. [2022-11-16 12:06:03,624 INFO L131 PetriNetUnfolder]: For 1200/1200 co-relation queries the response was YES. [2022-11-16 12:06:03,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4820 conditions, 2135 events. 351/2135 cut-off events. For 1200/1200 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 14068 event pairs, 0 based on Foata normal form. 30/2115 useless extension candidates. Maximal degree in co-relation 4049. Up to 325 conditions per place. [2022-11-16 12:06:03,655 INFO L137 encePairwiseOnDemand]: 316/321 looper letters, 33 selfloop transitions, 8 changer transitions 0/367 dead transitions. [2022-11-16 12:06:03,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 367 transitions, 1704 flow [2022-11-16 12:06:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:06:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:06:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2019 transitions. [2022-11-16 12:06:03,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985313751668892 [2022-11-16 12:06:03,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2019 transitions. [2022-11-16 12:06:03,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2019 transitions. [2022-11-16 12:06:03,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:03,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2019 transitions. [2022-11-16 12:06:03,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.42857142857144) internal successors, (2019), 7 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:03,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:03,668 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:03,668 INFO L175 Difference]: Start difference. First operand has 363 places, 352 transitions, 1578 flow. Second operand 7 states and 2019 transitions. [2022-11-16 12:06:03,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 367 transitions, 1704 flow [2022-11-16 12:06:03,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 367 transitions, 1401 flow, removed 15 selfloop flow, removed 29 redundant places. [2022-11-16 12:06:03,684 INFO L231 Difference]: Finished difference. Result has 309 places, 350 transitions, 1285 flow [2022-11-16 12:06:03,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1285, PETRI_PLACES=309, PETRI_TRANSITIONS=350} [2022-11-16 12:06:03,685 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 40 predicate places. [2022-11-16 12:06:03,685 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 350 transitions, 1285 flow [2022-11-16 12:06:03,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:03,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:06:03,686 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:03,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:03,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:06:03,893 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-11-16 12:06:03,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:06:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash 485600300, now seen corresponding path program 2 times [2022-11-16 12:06:03,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:06:03,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399434140] [2022-11-16 12:06:03,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:06:03,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:06:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:06:04,450 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 21 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:06:04,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:06:04,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399434140] [2022-11-16 12:06:04,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399434140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:06:04,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251307822] [2022-11-16 12:06:04,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:06:04,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:06:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:06:04,453 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:06:04,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:06:04,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:06:04,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:06:04,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:06:04,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:06:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-16 12:06:05,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:06:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-16 12:06:05,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251307822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:06:05,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:06:05,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-16 12:06:05,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673501487] [2022-11-16 12:06:05,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:06:05,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:06:05,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:06:05,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:06:05,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:06:05,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 321 [2022-11-16 12:06:05,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 350 transitions, 1285 flow. Second operand has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:05,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:06:05,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 321 [2022-11-16 12:06:05,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:06:08,642 INFO L130 PetriNetUnfolder]: 1069/5928 cut-off events. [2022-11-16 12:06:08,642 INFO L131 PetriNetUnfolder]: For 1751/1751 co-relation queries the response was YES. [2022-11-16 12:06:08,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11900 conditions, 5928 events. 1069/5928 cut-off events. For 1751/1751 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 52850 event pairs, 122 based on Foata normal form. 45/5623 useless extension candidates. Maximal degree in co-relation 9856. Up to 468 conditions per place. [2022-11-16 12:06:08,731 INFO L137 encePairwiseOnDemand]: 279/321 looper letters, 0 selfloop transitions, 0 changer transitions 602/602 dead transitions. [2022-11-16 12:06:08,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 602 transitions, 3153 flow [2022-11-16 12:06:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-16 12:06:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-16 12:06:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 8156 transitions. [2022-11-16 12:06:08,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6686342023282505 [2022-11-16 12:06:08,749 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 8156 transitions. [2022-11-16 12:06:08,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 8156 transitions. [2022-11-16 12:06:08,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:06:08,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 8156 transitions. [2022-11-16 12:06:08,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 214.6315789473684) internal successors, (8156), 38 states have internal predecessors, (8156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,931 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 321.0) internal successors, (12519), 39 states have internal predecessors, (12519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,932 INFO L175 Difference]: Start difference. First operand has 309 places, 350 transitions, 1285 flow. Second operand 38 states and 8156 transitions. [2022-11-16 12:06:08,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 602 transitions, 3153 flow [2022-11-16 12:06:08,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 602 transitions, 3127 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 12:06:08,948 INFO L231 Difference]: Finished difference. Result has 339 places, 0 transitions, 0 flow [2022-11-16 12:06:08,949 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=0, PETRI_PLACES=339, PETRI_TRANSITIONS=0} [2022-11-16 12:06:08,949 INFO L288 CegarLoopForPetriNet]: 269 programPoint places, 70 predicate places. [2022-11-16 12:06:08,949 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 0 transitions, 0 flow [2022-11-16 12:06:08,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 215.47368421052633) internal successors, (4094), 19 states have internal predecessors, (4094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:06:08,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 23 remaining) [2022-11-16 12:06:08,953 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 23 remaining) [2022-11-16 12:06:08,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 23 remaining) [2022-11-16 12:06:08,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 23 remaining) [2022-11-16 12:06:08,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 23 remaining) [2022-11-16 12:06:08,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 23 remaining) [2022-11-16 12:06:08,954 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 23 remaining) [2022-11-16 12:06:08,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 23 remaining) [2022-11-16 12:06:08,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 23 remaining) [2022-11-16 12:06:08,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 23 remaining) [2022-11-16 12:06:08,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 23 remaining) [2022-11-16 12:06:08,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 23 remaining) [2022-11-16 12:06:08,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 23 remaining) [2022-11-16 12:06:08,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 23 remaining) [2022-11-16 12:06:08,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 23 remaining) [2022-11-16 12:06:08,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 23 remaining) [2022-11-16 12:06:08,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 23 remaining) [2022-11-16 12:06:08,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 23 remaining) [2022-11-16 12:06:08,956 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 23 remaining) [2022-11-16 12:06:08,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 23 remaining) [2022-11-16 12:06:08,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 23 remaining) [2022-11-16 12:06:08,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 23 remaining) [2022-11-16 12:06:08,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 23 remaining) [2022-11-16 12:06:08,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:06:09,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:06:09,163 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:06:09,168 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:06:09,168 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:06:09,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:06:09 BasicIcfg [2022-11-16 12:06:09,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:06:09,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:06:09,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:06:09,174 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:06:09,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:05:19" (3/4) ... [2022-11-16 12:06:09,177 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:06:09,183 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:06:09,184 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:06:09,184 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 12:06:09,195 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2022-11-16 12:06:09,195 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:06:09,196 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:06:09,196 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:06:09,251 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:06:09,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:06:09,252 INFO L158 Benchmark]: Toolchain (without parser) took 50922.38ms. Allocated memory was 119.5MB in the beginning and 9.1GB in the end (delta: 9.0GB). Free memory was 83.3MB in the beginning and 7.9GB in the end (delta: -7.8GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-16 12:06:09,252 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:06:09,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.37ms. Allocated memory is still 119.5MB. Free memory was 83.1MB in the beginning and 96.0MB in the end (delta: -12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:06:09,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.68ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:06:09,253 INFO L158 Benchmark]: Boogie Preprocessor took 89.92ms. Allocated memory is still 119.5MB. Free memory was 93.3MB in the beginning and 91.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:06:09,254 INFO L158 Benchmark]: RCFGBuilder took 846.73ms. Allocated memory is still 119.5MB. Free memory was 91.3MB in the beginning and 67.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 12:06:09,254 INFO L158 Benchmark]: TraceAbstraction took 49422.39ms. Allocated memory was 119.5MB in the beginning and 9.1GB in the end (delta: 9.0GB). Free memory was 67.2MB in the beginning and 7.9GB in the end (delta: -7.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2022-11-16 12:06:09,254 INFO L158 Benchmark]: Witness Printer took 77.26ms. Allocated memory is still 9.1GB. Free memory was 7.9GB in the beginning and 7.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:06:09,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.37ms. Allocated memory is still 119.5MB. Free memory was 83.1MB in the beginning and 96.0MB in the end (delta: -12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.68ms. Allocated memory is still 119.5MB. Free memory was 95.5MB in the beginning and 93.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.92ms. Allocated memory is still 119.5MB. Free memory was 93.3MB in the beginning and 91.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 846.73ms. Allocated memory is still 119.5MB. Free memory was 91.3MB in the beginning and 67.8MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 49422.39ms. Allocated memory was 119.5MB in the beginning and 9.1GB in the end (delta: 9.0GB). Free memory was 67.2MB in the beginning and 7.9GB in the end (delta: -7.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 77.26ms. Allocated memory is still 9.1GB. Free memory was 7.9GB in the beginning and 7.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 107]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 351 locations, 23 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: 49.2s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 35.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5696 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5696 mSDsluCounter, 858 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 677 mSDsCounter, 492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4776 IncrementalHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 492 mSolverCounterUnsat, 181 mSDtfsCounter, 4776 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2998 GetRequests, 2679 SyntacticMatches, 12 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2448occurred in iteration=12, InterpolantAutomatonStates: 232, 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: 0.4s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 4270 NumberOfCodeBlocks, 4108 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 5195 ConstructedInterpolants, 0 QuantifiedInterpolants, 10977 SizeOfPredicates, 46 NumberOfNonLiveVariables, 3686 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 541/926 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:06:09,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5d5971-2cd0-4014-82c3-f2d6b20d85e5/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