./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/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_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/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_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/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 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 --- 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 11:05:27,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:05:27,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:05:27,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:05:27,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:05:27,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:05:27,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:05:27,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:05:27,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:05:27,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:05:27,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:05:27,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:05:27,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:05:27,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:05:27,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:05:27,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:05:27,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:05:27,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:05:27,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:05:27,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:05:27,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:05:27,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:05:27,922 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:05:27,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:05:27,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:05:27,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:05:27,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:05:27,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:05:27,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:05:27,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:05:27,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:05:27,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:05:27,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:05:27,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:05:27,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:05:27,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:05:27,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:05:27,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:05:27,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:05:27,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:05:27,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:05:27,945 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:05:27,973 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:05:27,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:05:27,974 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:05:27,974 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:05:27,975 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:05:27,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:05:27,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:05:27,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:05:27,977 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:05:27,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:05:27,978 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:05:27,978 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:05:27,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:05:27,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:05:27,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:05:27,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:05:27,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:05:27,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:05:27,980 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:05:27,980 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:05:27,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:05:27,981 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:05:27,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:05:27,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:05:27,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:05:27,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:05:27,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:27,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:05:27,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:05:27,984 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:05:27,984 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:05:27,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:05:27,985 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:05:27,985 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:05:27,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:05:27,985 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_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9abac63211b9980a3b9079d9eb140a85fbc6c5adec6517ed998cc9e140b19342 [2022-11-16 11:05:28,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:05:28,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:05:28,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:05:28,307 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:05:28,309 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:05:28,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-16 11:05:28,389 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/data/371d8238d/dfa69a753f084e73910ffb6a1fcfbf49/FLAGbec2cbbce [2022-11-16 11:05:28,926 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:05:28,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c [2022-11-16 11:05:28,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/data/371d8238d/dfa69a753f084e73910ffb6a1fcfbf49/FLAGbec2cbbce [2022-11-16 11:05:29,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/data/371d8238d/dfa69a753f084e73910ffb6a1fcfbf49 [2022-11-16 11:05:29,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:05:29,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:05:29,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:29,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:05:29,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:05:29,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7e5ff5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29, skipping insertion in model container [2022-11-16 11:05:29,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:05:29,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:05:29,632 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_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-16 11:05:29,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:29,662 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:05:29,707 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_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/sv-benchmarks/c/weaver/popl20-more-min-array.wvr.c[2553,2566] [2022-11-16 11:05:29,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:05:29,743 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:05:29,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29 WrapperNode [2022-11-16 11:05:29,745 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:05:29,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:29,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:05:29,747 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:05:29,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,821 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-11-16 11:05:29,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:05:29,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:05:29,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:05:29,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:05:29,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,885 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:05:29,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:05:29,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:05:29,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:05:29,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (1/1) ... [2022-11-16 11:05:29,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:05:29,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:29,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:05:29,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:05:30,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:05:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:05:30,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:05:30,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:05:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:05:30,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:05:30,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:05:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:05:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:05:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:05:30,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:05:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:05:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:05:30,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:05:30,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:05:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:05:30,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:05:30,025 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 11:05:30,185 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:05:30,188 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:05:30,686 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:05:30,809 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:05:30,819 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:05:30,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:30 BoogieIcfgContainer [2022-11-16 11:05:30,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:05:30,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:05:30,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:05:30,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:05:30,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:05:29" (1/3) ... [2022-11-16 11:05:30,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec120e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:30, skipping insertion in model container [2022-11-16 11:05:30,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:29" (2/3) ... [2022-11-16 11:05:30,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec120e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:30, skipping insertion in model container [2022-11-16 11:05:30,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:30" (3/3) ... [2022-11-16 11:05:30,843 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-11-16 11:05:30,854 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:05:30,869 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:05:30,869 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:05:30,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:05:30,997 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:05:31,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 168 transitions, 360 flow [2022-11-16 11:05:31,158 INFO L130 PetriNetUnfolder]: 12/165 cut-off events. [2022-11-16 11:05:31,158 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:05:31,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 165 events. 12/165 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2022-11-16 11:05:31,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 168 transitions, 360 flow [2022-11-16 11:05:31,190 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 144 transitions, 303 flow [2022-11-16 11:05:31,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:05:31,219 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;@38175bf2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:05:31,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-16 11:05:31,285 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-16 11:05:31,286 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:05:31,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:31,287 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 11:05:31,288 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash 47761478, now seen corresponding path program 1 times [2022-11-16 11:05:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:31,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301327454] [2022-11-16 11:05:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:31,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:31,889 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 11:05:31,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301327454] [2022-11-16 11:05:31,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301327454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:31,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:31,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:31,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047833670] [2022-11-16 11:05:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:31,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:31,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:31,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:31,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-16 11:05:31,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 11:05:31,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:31,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-16 11:05:31,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:32,249 INFO L130 PetriNetUnfolder]: 79/583 cut-off events. [2022-11-16 11:05:32,250 INFO L131 PetriNetUnfolder]: For 86/88 co-relation queries the response was YES. [2022-11-16 11:05:32,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 583 events. 79/583 cut-off events. For 86/88 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2904 event pairs, 30 based on Foata normal form. 72/535 useless extension candidates. Maximal degree in co-relation 285. Up to 69 conditions per place. [2022-11-16 11:05:32,282 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 32 selfloop transitions, 4 changer transitions 3/153 dead transitions. [2022-11-16 11:05:32,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 153 transitions, 408 flow [2022-11-16 11:05:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2022-11-16 11:05:32,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2022-11-16 11:05:32,315 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2022-11-16 11:05:32,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2022-11-16 11:05:32,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:32,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2022-11-16 11:05:32,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 0 states have call successors, (0), 0 states 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 11:05:32,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,337 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:32,339 INFO L175 Difference]: Start difference. First operand has 143 places, 144 transitions, 303 flow. Second operand 5 states and 740 transitions. [2022-11-16 11:05:32,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 153 transitions, 408 flow [2022-11-16 11:05:32,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 153 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:32,350 INFO L231 Difference]: Finished difference. Result has 145 places, 137 transitions, 304 flow [2022-11-16 11:05:32,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-11-16 11:05:32,358 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 2 predicate places. [2022-11-16 11:05:32,358 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 304 flow [2022-11-16 11:05:32,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 11:05:32,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:32,360 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 11:05:32,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:05:32,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1591896996, now seen corresponding path program 1 times [2022-11-16 11:05:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:32,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245612314] [2022-11-16 11:05:32,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,611 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 11:05:32,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:32,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245612314] [2022-11-16 11:05:32,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245612314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:32,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081185544] [2022-11-16 11:05:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:32,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:32,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:32,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:32,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:05:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:32,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:05:32,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:32,867 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 11:05:32,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:32,952 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 11:05:32,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081185544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:32,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:32,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:05:32,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463993534] [2022-11-16 11:05:32,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:32,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:05:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:32,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:05:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:05:32,961 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-16 11:05:32,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 304 flow. Second operand has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 11:05:32,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:32,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-16 11:05:32,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:33,624 INFO L130 PetriNetUnfolder]: 196/1376 cut-off events. [2022-11-16 11:05:33,624 INFO L131 PetriNetUnfolder]: For 71/76 co-relation queries the response was YES. [2022-11-16 11:05:33,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1376 events. 196/1376 cut-off events. For 71/76 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9112 event pairs, 75 based on Foata normal form. 3/1094 useless extension candidates. Maximal degree in co-relation 1384. Up to 70 conditions per place. [2022-11-16 11:05:33,642 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 68 selfloop transitions, 18 changer transitions 0/200 dead transitions. [2022-11-16 11:05:33,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 200 transitions, 648 flow [2022-11-16 11:05:33,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:05:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:05:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2573 transitions. [2022-11-16 11:05:33,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8508597883597884 [2022-11-16 11:05:33,650 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2573 transitions. [2022-11-16 11:05:33,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2573 transitions. [2022-11-16 11:05:33,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:33,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2573 transitions. [2022-11-16 11:05:33,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 142.94444444444446) internal successors, (2573), 18 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states 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 11:05:33,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 11:05:33,703 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 11:05:33,703 INFO L175 Difference]: Start difference. First operand has 145 places, 137 transitions, 304 flow. Second operand 18 states and 2573 transitions. [2022-11-16 11:05:33,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 200 transitions, 648 flow [2022-11-16 11:05:33,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 200 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:33,714 INFO L231 Difference]: Finished difference. Result has 162 places, 149 transitions, 408 flow [2022-11-16 11:05:33,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=408, PETRI_PLACES=162, PETRI_TRANSITIONS=149} [2022-11-16 11:05:33,715 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2022-11-16 11:05:33,716 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 149 transitions, 408 flow [2022-11-16 11:05:33,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states 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 11:05:33,718 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:33,718 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:33,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:33,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:33,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2104166939, now seen corresponding path program 1 times [2022-11-16 11:05:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:33,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606257848] [2022-11-16 11:05:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:33,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606257848] [2022-11-16 11:05:34,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606257848] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543468640] [2022-11-16 11:05:34,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:34,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:34,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:34,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:34,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:05:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:05:34,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:34,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:34,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543468640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:34,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:34,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:05:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209019898] [2022-11-16 11:05:34,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:34,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:05:34,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:34,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:05:34,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:05:34,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 168 [2022-11-16 11:05:34,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 149 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 11:05:34,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:34,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 168 [2022-11-16 11:05:34,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:34,757 INFO L130 PetriNetUnfolder]: 196/1372 cut-off events. [2022-11-16 11:05:34,758 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-16 11:05:34,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1372 events. 196/1372 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9037 event pairs, 75 based on Foata normal form. 4/1091 useless extension candidates. Maximal degree in co-relation 1427. Up to 240 conditions per place. [2022-11-16 11:05:34,772 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 33 selfloop transitions, 11 changer transitions 0/158 dead transitions. [2022-11-16 11:05:34,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 158 transitions, 503 flow [2022-11-16 11:05:34,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:05:34,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:05:34,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1002 transitions. [2022-11-16 11:05:34,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8520408163265306 [2022-11-16 11:05:34,776 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1002 transitions. [2022-11-16 11:05:34,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1002 transitions. [2022-11-16 11:05:34,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:34,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1002 transitions. [2022-11-16 11:05:34,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.14285714285714) internal successors, (1002), 7 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states 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 11:05:34,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:05:34,785 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:05:34,785 INFO L175 Difference]: Start difference. First operand has 162 places, 149 transitions, 408 flow. Second operand 7 states and 1002 transitions. [2022-11-16 11:05:34,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 158 transitions, 503 flow [2022-11-16 11:05:34,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 471 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:34,792 INFO L231 Difference]: Finished difference. Result has 158 places, 145 transitions, 371 flow [2022-11-16 11:05:34,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=158, PETRI_TRANSITIONS=145} [2022-11-16 11:05:34,794 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 15 predicate places. [2022-11-16 11:05:34,794 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 145 transitions, 371 flow [2022-11-16 11:05:34,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 11:05:34,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:34,796 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] [2022-11-16 11:05:34,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:35,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:35,005 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:35,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:35,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2119274129, now seen corresponding path program 1 times [2022-11-16 11:05:35,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:35,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270416006] [2022-11-16 11:05:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:35,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:35,154 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 11:05:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:35,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270416006] [2022-11-16 11:05:35,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270416006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:35,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:35,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896235560] [2022-11-16 11:05:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:35,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:35,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:35,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:35,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:35,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-16 11:05:35,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 145 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 11:05:35,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:35,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-16 11:05:35,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:36,065 INFO L130 PetriNetUnfolder]: 1121/3662 cut-off events. [2022-11-16 11:05:36,065 INFO L131 PetriNetUnfolder]: For 102/132 co-relation queries the response was YES. [2022-11-16 11:05:36,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 3662 events. 1121/3662 cut-off events. For 102/132 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 30664 event pairs, 450 based on Foata normal form. 0/2877 useless extension candidates. Maximal degree in co-relation 4799. Up to 1066 conditions per place. [2022-11-16 11:05:36,105 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 36 selfloop transitions, 4 changer transitions 0/167 dead transitions. [2022-11-16 11:05:36,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 167 transitions, 506 flow [2022-11-16 11:05:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-11-16 11:05:36,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-11-16 11:05:36,109 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-11-16 11:05:36,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-11-16 11:05:36,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:36,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-11-16 11:05:36,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 11:05:36,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:36,116 INFO L175 Difference]: Start difference. First operand has 158 places, 145 transitions, 371 flow. Second operand 5 states and 742 transitions. [2022-11-16 11:05:36,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 167 transitions, 506 flow [2022-11-16 11:05:36,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 167 transitions, 492 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:36,125 INFO L231 Difference]: Finished difference. Result has 160 places, 148 transitions, 387 flow [2022-11-16 11:05:36,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=160, PETRI_TRANSITIONS=148} [2022-11-16 11:05:36,128 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 17 predicate places. [2022-11-16 11:05:36,129 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 148 transitions, 387 flow [2022-11-16 11:05:36,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states 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 11:05:36,129 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:36,130 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] [2022-11-16 11:05:36,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:05:36,130 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:36,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1191670954, now seen corresponding path program 1 times [2022-11-16 11:05:36,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:36,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33552368] [2022-11-16 11:05:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:36,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:36,363 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 11:05:36,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:36,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33552368] [2022-11-16 11:05:36,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33552368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:36,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:36,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:05:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357799663] [2022-11-16 11:05:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:36,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:05:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:05:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:05:36,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-16 11:05:36,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 148 transitions, 387 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 11:05:36,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:36,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-16 11:05:36,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:37,844 INFO L130 PetriNetUnfolder]: 2156/5657 cut-off events. [2022-11-16 11:05:37,845 INFO L131 PetriNetUnfolder]: For 482/487 co-relation queries the response was YES. [2022-11-16 11:05:37,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9907 conditions, 5657 events. 2156/5657 cut-off events. For 482/487 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 52014 event pairs, 965 based on Foata normal form. 0/4772 useless extension candidates. Maximal degree in co-relation 7914. Up to 2031 conditions per place. [2022-11-16 11:05:37,907 INFO L137 encePairwiseOnDemand]: 162/168 looper letters, 35 selfloop transitions, 4 changer transitions 0/169 dead transitions. [2022-11-16 11:05:37,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 169 transitions, 517 flow [2022-11-16 11:05:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:05:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:05:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2022-11-16 11:05:37,911 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8821428571428571 [2022-11-16 11:05:37,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2022-11-16 11:05:37,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2022-11-16 11:05:37,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:37,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2022-11-16 11:05:37,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states 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 11:05:37,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,918 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:05:37,919 INFO L175 Difference]: Start difference. First operand has 160 places, 148 transitions, 387 flow. Second operand 5 states and 741 transitions. [2022-11-16 11:05:37,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 169 transitions, 517 flow [2022-11-16 11:05:37,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 169 transitions, 515 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:37,927 INFO L231 Difference]: Finished difference. Result has 166 places, 151 transitions, 415 flow [2022-11-16 11:05:37,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=166, PETRI_TRANSITIONS=151} [2022-11-16 11:05:37,932 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 23 predicate places. [2022-11-16 11:05:37,933 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 151 transitions, 415 flow [2022-11-16 11:05:37,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 11:05:37,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:37,934 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:37,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:05:37,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:37,935 INFO L85 PathProgramCache]: Analyzing trace with hash -840761546, now seen corresponding path program 1 times [2022-11-16 11:05:37,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:37,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268096771] [2022-11-16 11:05:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:37,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:38,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:38,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268096771] [2022-11-16 11:05:38,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268096771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:38,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262162914] [2022-11-16 11:05:38,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:38,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:38,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:38,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:05:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:38,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:05:38,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:05:38,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:38,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262162914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:38,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:38,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 11:05:38,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955159725] [2022-11-16 11:05:38,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:38,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:05:38,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 168 [2022-11-16 11:05:38,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 151 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 11:05:38,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:38,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 168 [2022-11-16 11:05:38,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:40,428 INFO L130 PetriNetUnfolder]: 1933/7428 cut-off events. [2022-11-16 11:05:40,429 INFO L131 PetriNetUnfolder]: For 1028/1028 co-relation queries the response was YES. [2022-11-16 11:05:40,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12945 conditions, 7428 events. 1933/7428 cut-off events. For 1028/1028 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 76095 event pairs, 1236 based on Foata normal form. 0/6126 useless extension candidates. Maximal degree in co-relation 12248. Up to 2609 conditions per place. [2022-11-16 11:05:40,516 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 53 selfloop transitions, 8 changer transitions 0/172 dead transitions. [2022-11-16 11:05:40,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 172 transitions, 590 flow [2022-11-16 11:05:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:05:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:05:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1078 transitions. [2022-11-16 11:05:40,520 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8020833333333334 [2022-11-16 11:05:40,521 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1078 transitions. [2022-11-16 11:05:40,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1078 transitions. [2022-11-16 11:05:40,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:40,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1078 transitions. [2022-11-16 11:05:40,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.75) internal successors, (1078), 8 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states 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 11:05:40,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:05:40,533 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 168.0) internal successors, (1512), 9 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 11:05:40,533 INFO L175 Difference]: Start difference. First operand has 166 places, 151 transitions, 415 flow. Second operand 8 states and 1078 transitions. [2022-11-16 11:05:40,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 172 transitions, 590 flow [2022-11-16 11:05:40,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 172 transitions, 588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:05:40,569 INFO L231 Difference]: Finished difference. Result has 175 places, 153 transitions, 447 flow [2022-11-16 11:05:40,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=447, PETRI_PLACES=175, PETRI_TRANSITIONS=153} [2022-11-16 11:05:40,571 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 32 predicate places. [2022-11-16 11:05:40,571 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 153 transitions, 447 flow [2022-11-16 11:05:40,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 0 states have call successors, (0), 0 states 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 11:05:40,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:40,572 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] [2022-11-16 11:05:40,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:40,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:40,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:40,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:40,779 INFO L85 PathProgramCache]: Analyzing trace with hash -797744630, now seen corresponding path program 1 times [2022-11-16 11:05:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:40,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550576498] [2022-11-16 11:05:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,960 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 11:05:40,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:40,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550576498] [2022-11-16 11:05:40,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550576498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:40,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:40,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788983176] [2022-11-16 11:05:40,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:05:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:05:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:05:40,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-11-16 11:05:40,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 153 transitions, 447 flow. Second operand has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 11:05:40,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:40,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-11-16 11:05:40,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:42,800 INFO L130 PetriNetUnfolder]: 2394/5549 cut-off events. [2022-11-16 11:05:42,800 INFO L131 PetriNetUnfolder]: For 971/1004 co-relation queries the response was YES. [2022-11-16 11:05:42,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10742 conditions, 5549 events. 2394/5549 cut-off events. For 971/1004 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 48689 event pairs, 1914 based on Foata normal form. 33/4660 useless extension candidates. Maximal degree in co-relation 9905. Up to 3377 conditions per place. [2022-11-16 11:05:42,859 INFO L137 encePairwiseOnDemand]: 155/168 looper letters, 70 selfloop transitions, 12 changer transitions 0/191 dead transitions. [2022-11-16 11:05:42,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 191 transitions, 703 flow [2022-11-16 11:05:42,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:05:42,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:05:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1430 transitions. [2022-11-16 11:05:42,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2022-11-16 11:05:42,866 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1430 transitions. [2022-11-16 11:05:42,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1430 transitions. [2022-11-16 11:05:42,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:42,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1430 transitions. [2022-11-16 11:05:42,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 130.0) internal successors, (1430), 11 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states 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 11:05:42,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 11:05:42,880 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 168.0) internal successors, (2016), 12 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 11:05:42,880 INFO L175 Difference]: Start difference. First operand has 175 places, 153 transitions, 447 flow. Second operand 11 states and 1430 transitions. [2022-11-16 11:05:42,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 191 transitions, 703 flow [2022-11-16 11:05:42,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 191 transitions, 693 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:05:42,891 INFO L231 Difference]: Finished difference. Result has 186 places, 158 transitions, 496 flow [2022-11-16 11:05:42,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=496, PETRI_PLACES=186, PETRI_TRANSITIONS=158} [2022-11-16 11:05:42,893 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2022-11-16 11:05:42,894 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 158 transitions, 496 flow [2022-11-16 11:05:42,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.375) internal successors, (1003), 8 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states 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 11:05:42,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:42,895 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] [2022-11-16 11:05:42,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:05:42,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:42,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1039720754, now seen corresponding path program 1 times [2022-11-16 11:05:42,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:42,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245148272] [2022-11-16 11:05:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:43,080 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 11:05:43,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:43,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245148272] [2022-11-16 11:05:43,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245148272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:43,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:43,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:05:43,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464413922] [2022-11-16 11:05:43,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:43,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:05:43,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:05:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:05:43,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 168 [2022-11-16 11:05:43,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 158 transitions, 496 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 11:05:43,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:43,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 168 [2022-11-16 11:05:43,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:44,610 INFO L130 PetriNetUnfolder]: 2892/6713 cut-off events. [2022-11-16 11:05:44,611 INFO L131 PetriNetUnfolder]: For 1134/1138 co-relation queries the response was YES. [2022-11-16 11:05:44,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13357 conditions, 6713 events. 2892/6713 cut-off events. For 1134/1138 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 60967 event pairs, 487 based on Foata normal form. 172/5941 useless extension candidates. Maximal degree in co-relation 12697. Up to 2168 conditions per place. [2022-11-16 11:05:44,678 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 33 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2022-11-16 11:05:44,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 168 transitions, 597 flow [2022-11-16 11:05:44,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:05:44,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:05:44,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 830 transitions. [2022-11-16 11:05:44,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8234126984126984 [2022-11-16 11:05:44,683 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 830 transitions. [2022-11-16 11:05:44,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 830 transitions. [2022-11-16 11:05:44,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:44,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 830 transitions. [2022-11-16 11:05:44,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 0 states have call successors, (0), 0 states 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 11:05:44,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states 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 11:05:44,689 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 168.0) internal successors, (1176), 7 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states 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 11:05:44,690 INFO L175 Difference]: Start difference. First operand has 186 places, 158 transitions, 496 flow. Second operand 6 states and 830 transitions. [2022-11-16 11:05:44,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 168 transitions, 597 flow [2022-11-16 11:05:44,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 168 transitions, 581 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:05:44,724 INFO L231 Difference]: Finished difference. Result has 183 places, 156 transitions, 487 flow [2022-11-16 11:05:44,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=183, PETRI_TRANSITIONS=156} [2022-11-16 11:05:44,727 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 40 predicate places. [2022-11-16 11:05:44,728 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 156 transitions, 487 flow [2022-11-16 11:05:44,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 11:05:44,729 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:44,730 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:05:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:05:44,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:44,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1810045335, now seen corresponding path program 1 times [2022-11-16 11:05:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:44,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84708992] [2022-11-16 11:05:44,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:44,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:44,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:44,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84708992] [2022-11-16 11:05:44,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84708992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:44,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835742379] [2022-11-16 11:05:44,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:44,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:44,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:44,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:44,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:05:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:44,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:05:45,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:45,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:45,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835742379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:45,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:45,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:05:45,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380331675] [2022-11-16 11:05:45,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:45,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:05:45,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:05:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:05:45,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-16 11:05:45,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 156 transitions, 487 flow. Second operand has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states 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 11:05:45,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:45,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-16 11:05:45,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:47,728 INFO L130 PetriNetUnfolder]: 4141/9230 cut-off events. [2022-11-16 11:05:47,729 INFO L131 PetriNetUnfolder]: For 1398/1402 co-relation queries the response was YES. [2022-11-16 11:05:47,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19508 conditions, 9230 events. 4141/9230 cut-off events. For 1398/1402 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 87025 event pairs, 572 based on Foata normal form. 171/8739 useless extension candidates. Maximal degree in co-relation 17872. Up to 1598 conditions per place. [2022-11-16 11:05:47,817 INFO L137 encePairwiseOnDemand]: 161/168 looper letters, 102 selfloop transitions, 18 changer transitions 0/255 dead transitions. [2022-11-16 11:05:47,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 255 transitions, 999 flow [2022-11-16 11:05:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:05:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:05:47,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2643 transitions. [2022-11-16 11:05:47,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740079365079365 [2022-11-16 11:05:47,825 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2643 transitions. [2022-11-16 11:05:47,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2643 transitions. [2022-11-16 11:05:47,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:47,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2643 transitions. [2022-11-16 11:05:47,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 146.83333333333334) internal successors, (2643), 18 states have internal predecessors, (2643), 0 states have call successors, (0), 0 states 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 11:05:47,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 11:05:47,844 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 168.0) internal successors, (3192), 19 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 11:05:47,844 INFO L175 Difference]: Start difference. First operand has 183 places, 156 transitions, 487 flow. Second operand 18 states and 2643 transitions. [2022-11-16 11:05:47,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 255 transitions, 999 flow [2022-11-16 11:05:47,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 255 transitions, 983 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:47,869 INFO L231 Difference]: Finished difference. Result has 199 places, 168 transitions, 577 flow [2022-11-16 11:05:47,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=577, PETRI_PLACES=199, PETRI_TRANSITIONS=168} [2022-11-16 11:05:47,870 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 56 predicate places. [2022-11-16 11:05:47,870 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 168 transitions, 577 flow [2022-11-16 11:05:47,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 142.75) internal successors, (1713), 12 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states 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 11:05:47,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:47,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:05:47,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:48,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:48,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash -276830043, now seen corresponding path program 1 times [2022-11-16 11:05:48,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:48,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588261209] [2022-11-16 11:05:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:48,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,204 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 11:05:48,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:48,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588261209] [2022-11-16 11:05:48,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588261209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:48,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866889855] [2022-11-16 11:05:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:48,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:48,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:48,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:05:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:48,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:05:48,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:48,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:48,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:05:48,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866889855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:48,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:05:48,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:05:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560110927] [2022-11-16 11:05:48,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:48,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:05:48,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:48,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:05:48,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:05:48,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-16 11:05:48,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 168 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 11:05:48,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:48,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-16 11:05:48,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:50,176 INFO L130 PetriNetUnfolder]: 3672/8216 cut-off events. [2022-11-16 11:05:50,176 INFO L131 PetriNetUnfolder]: For 2827/2831 co-relation queries the response was YES. [2022-11-16 11:05:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18669 conditions, 8216 events. 3672/8216 cut-off events. For 2827/2831 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 77356 event pairs, 210 based on Foata normal form. 228/8004 useless extension candidates. Maximal degree in co-relation 17377. Up to 2432 conditions per place. [2022-11-16 11:05:50,256 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2022-11-16 11:05:50,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 190 transitions, 730 flow [2022-11-16 11:05:50,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:05:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:05:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2022-11-16 11:05:50,261 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8732993197278912 [2022-11-16 11:05:50,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2022-11-16 11:05:50,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2022-11-16 11:05:50,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:50,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2022-11-16 11:05:50,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states 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 11:05:50,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:05:50,271 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:05:50,272 INFO L175 Difference]: Start difference. First operand has 199 places, 168 transitions, 577 flow. Second operand 7 states and 1027 transitions. [2022-11-16 11:05:50,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 190 transitions, 730 flow [2022-11-16 11:05:50,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 190 transitions, 698 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:50,308 INFO L231 Difference]: Finished difference. Result has 195 places, 164 transitions, 540 flow [2022-11-16 11:05:50,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=195, PETRI_TRANSITIONS=164} [2022-11-16 11:05:50,310 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 52 predicate places. [2022-11-16 11:05:50,311 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 164 transitions, 540 flow [2022-11-16 11:05:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states 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 11:05:50,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:50,332 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:05:50,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:50,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:05:50,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:50,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:50,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1610000404, now seen corresponding path program 1 times [2022-11-16 11:05:50,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:50,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73257184] [2022-11-16 11:05:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:50,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:05:50,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:50,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73257184] [2022-11-16 11:05:50,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73257184] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:50,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267484058] [2022-11-16 11:05:50,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:50,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:50,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:50,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:50,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:05:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:50,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:05:50,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:51,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:51,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:51,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267484058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:51,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:51,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-16 11:05:51,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263746733] [2022-11-16 11:05:51,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:51,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:05:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:05:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:05:51,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 168 [2022-11-16 11:05:51,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 164 transitions, 540 flow. Second operand has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states 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 11:05:51,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:51,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 168 [2022-11-16 11:05:51,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:05:55,865 INFO L130 PetriNetUnfolder]: 6818/14620 cut-off events. [2022-11-16 11:05:55,866 INFO L131 PetriNetUnfolder]: For 3867/3895 co-relation queries the response was YES. [2022-11-16 11:05:55,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31844 conditions, 14620 events. 6818/14620 cut-off events. For 3867/3895 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 136901 event pairs, 1440 based on Foata normal form. 136/13669 useless extension candidates. Maximal degree in co-relation 29805. Up to 2690 conditions per place. [2022-11-16 11:05:55,997 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 179 selfloop transitions, 33 changer transitions 0/319 dead transitions. [2022-11-16 11:05:55,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 319 transitions, 1412 flow [2022-11-16 11:05:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:05:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 11:05:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3511 transitions. [2022-11-16 11:05:56,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7463860544217688 [2022-11-16 11:05:56,008 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3511 transitions. [2022-11-16 11:05:56,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3511 transitions. [2022-11-16 11:05:56,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:05:56,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3511 transitions. [2022-11-16 11:05:56,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 125.39285714285714) internal successors, (3511), 28 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states 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 11:05:56,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 11:05:56,031 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 168.0) internal successors, (4872), 29 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states 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 11:05:56,031 INFO L175 Difference]: Start difference. First operand has 195 places, 164 transitions, 540 flow. Second operand 28 states and 3511 transitions. [2022-11-16 11:05:56,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 319 transitions, 1412 flow [2022-11-16 11:05:56,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 319 transitions, 1398 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:05:56,082 INFO L231 Difference]: Finished difference. Result has 223 places, 179 transitions, 687 flow [2022-11-16 11:05:56,082 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=687, PETRI_PLACES=223, PETRI_TRANSITIONS=179} [2022-11-16 11:05:56,083 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 80 predicate places. [2022-11-16 11:05:56,083 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 179 transitions, 687 flow [2022-11-16 11:05:56,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 121.65217391304348) internal successors, (2798), 23 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states 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 11:05:56,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:05:56,085 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:05:56,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:05:56,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:56,297 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:05:56,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:56,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1437094970, now seen corresponding path program 2 times [2022-11-16 11:05:56,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:56,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820653347] [2022-11-16 11:05:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:56,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:05:56,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:56,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820653347] [2022-11-16 11:05:56,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820653347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:05:56,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844342077] [2022-11-16 11:05:56,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:05:56,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:05:56,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:05:56,811 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:05:56,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:05:56,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:05:56,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:05:56,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:05:56,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:05:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:05:57,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:05:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:05:57,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844342077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:05:57,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:05:57,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:05:57,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572657805] [2022-11-16 11:05:57,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:05:57,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:05:57,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:57,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:05:57,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:05:57,389 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 168 [2022-11-16 11:05:57,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 179 transitions, 687 flow. Second operand has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states 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 11:05:57,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:05:57,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 168 [2022-11-16 11:05:57,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:02,867 INFO L130 PetriNetUnfolder]: 4950/22267 cut-off events. [2022-11-16 11:06:02,867 INFO L131 PetriNetUnfolder]: For 9014/9386 co-relation queries the response was YES. [2022-11-16 11:06:02,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44645 conditions, 22267 events. 4950/22267 cut-off events. For 9014/9386 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 276536 event pairs, 3594 based on Foata normal form. 374/21070 useless extension candidates. Maximal degree in co-relation 42744. Up to 1785 conditions per place. [2022-11-16 11:06:03,031 INFO L137 encePairwiseOnDemand]: 157/168 looper letters, 136 selfloop transitions, 25 changer transitions 1/286 dead transitions. [2022-11-16 11:06:03,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 286 transitions, 1370 flow [2022-11-16 11:06:03,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:06:03,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:06:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3105 transitions. [2022-11-16 11:06:03,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7700892857142857 [2022-11-16 11:06:03,043 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3105 transitions. [2022-11-16 11:06:03,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3105 transitions. [2022-11-16 11:06:03,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:03,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3105 transitions. [2022-11-16 11:06:03,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 129.375) internal successors, (3105), 24 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states 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 11:06:03,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 11:06:03,061 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 168.0) internal successors, (4200), 25 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states 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 11:06:03,061 INFO L175 Difference]: Start difference. First operand has 223 places, 179 transitions, 687 flow. Second operand 24 states and 3105 transitions. [2022-11-16 11:06:03,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 286 transitions, 1370 flow [2022-11-16 11:06:03,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 286 transitions, 1319 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-11-16 11:06:03,431 INFO L231 Difference]: Finished difference. Result has 230 places, 183 transitions, 711 flow [2022-11-16 11:06:03,432 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=711, PETRI_PLACES=230, PETRI_TRANSITIONS=183} [2022-11-16 11:06:03,432 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 87 predicate places. [2022-11-16 11:06:03,433 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 183 transitions, 711 flow [2022-11-16 11:06:03,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 126.61111111111111) internal successors, (2279), 18 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states 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 11:06:03,434 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:03,434 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] [2022-11-16 11:06:03,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:03,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:03,641 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:06:03,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:03,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1153657876, now seen corresponding path program 1 times [2022-11-16 11:06:03,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:03,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53617005] [2022-11-16 11:06:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:03,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:03,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:03,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53617005] [2022-11-16 11:06:03,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53617005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510894213] [2022-11-16 11:06:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:03,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:03,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:03,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:03,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:06:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:04,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:06:04,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:06:04,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:04,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510894213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:04,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:04,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-16 11:06:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802254766] [2022-11-16 11:06:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:04,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:06:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:06:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:06:04,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 168 [2022-11-16 11:06:04,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 183 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 11:06:04,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:04,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 168 [2022-11-16 11:06:04,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:08,328 INFO L130 PetriNetUnfolder]: 8581/18377 cut-off events. [2022-11-16 11:06:08,328 INFO L131 PetriNetUnfolder]: For 6820/7324 co-relation queries the response was YES. [2022-11-16 11:06:08,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41242 conditions, 18377 events. 8581/18377 cut-off events. For 6820/7324 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 186947 event pairs, 2811 based on Foata normal form. 1021/17980 useless extension candidates. Maximal degree in co-relation 39412. Up to 5291 conditions per place. [2022-11-16 11:06:08,453 INFO L137 encePairwiseOnDemand]: 160/168 looper letters, 52 selfloop transitions, 11 changer transitions 6/215 dead transitions. [2022-11-16 11:06:08,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 215 transitions, 967 flow [2022-11-16 11:06:08,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:06:08,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:06:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 961 transitions. [2022-11-16 11:06:08,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8171768707482994 [2022-11-16 11:06:08,456 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 961 transitions. [2022-11-16 11:06:08,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 961 transitions. [2022-11-16 11:06:08,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:08,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 961 transitions. [2022-11-16 11:06:08,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.28571428571428) internal successors, (961), 7 states have internal predecessors, (961), 0 states have call successors, (0), 0 states 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 11:06:08,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:06:08,462 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:06:08,462 INFO L175 Difference]: Start difference. First operand has 230 places, 183 transitions, 711 flow. Second operand 7 states and 961 transitions. [2022-11-16 11:06:08,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 215 transitions, 967 flow [2022-11-16 11:06:08,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 215 transitions, 903 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-16 11:06:08,592 INFO L231 Difference]: Finished difference. Result has 217 places, 179 transitions, 658 flow [2022-11-16 11:06:08,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=658, PETRI_PLACES=217, PETRI_TRANSITIONS=179} [2022-11-16 11:06:08,593 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 74 predicate places. [2022-11-16 11:06:08,594 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 179 transitions, 658 flow [2022-11-16 11:06:08,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.5) internal successors, (801), 6 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 11:06:08,594 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:08,595 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:08,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:08,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:06:08,807 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:06:08,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash 684918698, now seen corresponding path program 1 times [2022-11-16 11:06:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:08,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176778028] [2022-11-16 11:06:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:06:08,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:08,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176778028] [2022-11-16 11:06:08,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176778028] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:08,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16489279] [2022-11-16 11:06:08,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:08,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:08,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:08,984 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:09,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:06:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:06:09,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:06:09,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:06:09,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16489279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:09,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:06:09,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:06:09,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604106934] [2022-11-16 11:06:09,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:09,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:06:09,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:09,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:06:09,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:06:09,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 168 [2022-11-16 11:06:09,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 179 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 11:06:09,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:09,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 168 [2022-11-16 11:06:09,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:11,424 INFO L130 PetriNetUnfolder]: 4318/9621 cut-off events. [2022-11-16 11:06:11,424 INFO L131 PetriNetUnfolder]: For 2741/2741 co-relation queries the response was YES. [2022-11-16 11:06:11,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23079 conditions, 9621 events. 4318/9621 cut-off events. For 2741/2741 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 90814 event pairs, 70 based on Foata normal form. 190/9358 useless extension candidates. Maximal degree in co-relation 23028. Up to 2377 conditions per place. [2022-11-16 11:06:11,696 INFO L137 encePairwiseOnDemand]: 163/168 looper letters, 44 selfloop transitions, 13 changer transitions 0/202 dead transitions. [2022-11-16 11:06:11,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 202 transitions, 828 flow [2022-11-16 11:06:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:06:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:06:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2022-11-16 11:06:11,699 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8724489795918368 [2022-11-16 11:06:11,700 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2022-11-16 11:06:11,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2022-11-16 11:06:11,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:11,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2022-11-16 11:06:11,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 11:06:11,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:06:11,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 168.0) internal successors, (1344), 8 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 11:06:11,706 INFO L175 Difference]: Start difference. First operand has 217 places, 179 transitions, 658 flow. Second operand 7 states and 1026 transitions. [2022-11-16 11:06:11,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 202 transitions, 828 flow [2022-11-16 11:06:11,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 202 transitions, 804 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-16 11:06:11,750 INFO L231 Difference]: Finished difference. Result has 213 places, 177 transitions, 646 flow [2022-11-16 11:06:11,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=646, PETRI_PLACES=213, PETRI_TRANSITIONS=177} [2022-11-16 11:06:11,751 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 70 predicate places. [2022-11-16 11:06:11,752 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 177 transitions, 646 flow [2022-11-16 11:06:11,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.33333333333334) internal successors, (854), 6 states have internal predecessors, (854), 0 states have call successors, (0), 0 states 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 11:06:11,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:11,753 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 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] [2022-11-16 11:06:11,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:11,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:11,964 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:06:11,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1153031729, now seen corresponding path program 2 times [2022-11-16 11:06:11,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:11,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117650840] [2022-11-16 11:06:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:12,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:12,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117650840] [2022-11-16 11:06:12,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117650840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:12,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872647302] [2022-11-16 11:06:12,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:06:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:12,351 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:12,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:06:12,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:06:12,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:06:12,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:06:12,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:06:12,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:06:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:06:12,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872647302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:06:12,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:06:12,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-16 11:06:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380324274] [2022-11-16 11:06:12,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:06:12,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:06:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:12,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:06:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:06:12,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 168 [2022-11-16 11:06:12,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 177 transitions, 646 flow. Second operand has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states 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 11:06:12,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:12,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 168 [2022-11-16 11:06:12,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:18,968 INFO L130 PetriNetUnfolder]: 8343/21634 cut-off events. [2022-11-16 11:06:18,968 INFO L131 PetriNetUnfolder]: For 10469/10972 co-relation queries the response was YES. [2022-11-16 11:06:19,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48944 conditions, 21634 events. 8343/21634 cut-off events. For 10469/10972 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 233857 event pairs, 1562 based on Foata normal form. 254/20516 useless extension candidates. Maximal degree in co-relation 46024. Up to 3685 conditions per place. [2022-11-16 11:06:19,129 INFO L137 encePairwiseOnDemand]: 150/168 looper letters, 224 selfloop transitions, 48 changer transitions 0/373 dead transitions. [2022-11-16 11:06:19,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 373 transitions, 1795 flow [2022-11-16 11:06:19,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 11:06:19,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-16 11:06:19,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4858 transitions. [2022-11-16 11:06:19,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2022-11-16 11:06:19,138 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4858 transitions. [2022-11-16 11:06:19,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4858 transitions. [2022-11-16 11:06:19,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:19,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4858 transitions. [2022-11-16 11:06:19,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 121.45) internal successors, (4858), 40 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states 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 11:06:19,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states 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 11:06:19,167 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 168.0) internal successors, (6888), 41 states have internal predecessors, (6888), 0 states have call successors, (0), 0 states 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 11:06:19,168 INFO L175 Difference]: Start difference. First operand has 213 places, 177 transitions, 646 flow. Second operand 40 states and 4858 transitions. [2022-11-16 11:06:19,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 373 transitions, 1795 flow [2022-11-16 11:06:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 373 transitions, 1755 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 11:06:19,365 INFO L231 Difference]: Finished difference. Result has 248 places, 188 transitions, 798 flow [2022-11-16 11:06:19,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=798, PETRI_PLACES=248, PETRI_TRANSITIONS=188} [2022-11-16 11:06:19,366 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 105 predicate places. [2022-11-16 11:06:19,366 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 188 transitions, 798 flow [2022-11-16 11:06:19,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 119.21052631578948) internal successors, (2265), 19 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states 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 11:06:19,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:06:19,368 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:06:19,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:06:19,574 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-16 11:06:19,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash -346541334, now seen corresponding path program 2 times [2022-11-16 11:06:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:19,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440938465] [2022-11-16 11:06:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:06:19,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:19,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440938465] [2022-11-16 11:06:19,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440938465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:06:19,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723553115] [2022-11-16 11:06:19,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:06:19,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:06:19,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:06:19,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:06:19,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:06:20,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:06:20,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:06:20,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:06:20,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:06:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 11:06:20,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:06:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 11:06:20,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723553115] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:06:20,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:06:20,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-11-16 11:06:20,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473310123] [2022-11-16 11:06:20,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:06:20,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:06:20,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:20,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:06:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:06:20,399 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 168 [2022-11-16 11:06:20,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 188 transitions, 798 flow. Second operand has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states 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 11:06:20,402 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:06:20,402 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 168 [2022-11-16 11:06:20,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:06:25,840 INFO L130 PetriNetUnfolder]: 11139/21985 cut-off events. [2022-11-16 11:06:25,840 INFO L131 PetriNetUnfolder]: For 7088/7094 co-relation queries the response was YES. [2022-11-16 11:06:25,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49559 conditions, 21985 events. 11139/21985 cut-off events. For 7088/7094 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 221675 event pairs, 528 based on Foata normal form. 284/20664 useless extension candidates. Maximal degree in co-relation 49357. Up to 3075 conditions per place. [2022-11-16 11:06:25,964 INFO L137 encePairwiseOnDemand]: 159/168 looper letters, 0 selfloop transitions, 0 changer transitions 307/307 dead transitions. [2022-11-16 11:06:25,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 307 transitions, 1412 flow [2022-11-16 11:06:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 11:06:25,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 11:06:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3082 transitions. [2022-11-16 11:06:25,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8338744588744589 [2022-11-16 11:06:25,970 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3082 transitions. [2022-11-16 11:06:25,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3082 transitions. [2022-11-16 11:06:25,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:06:25,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3082 transitions. [2022-11-16 11:06:25,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 140.0909090909091) internal successors, (3082), 22 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states 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 11:06:25,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 11:06:25,985 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 168.0) internal successors, (3864), 23 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states 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 11:06:25,985 INFO L175 Difference]: Start difference. First operand has 248 places, 188 transitions, 798 flow. Second operand 22 states and 3082 transitions. [2022-11-16 11:06:25,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 307 transitions, 1412 flow [2022-11-16 11:06:26,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 307 transitions, 1341 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-16 11:06:26,084 INFO L231 Difference]: Finished difference. Result has 243 places, 0 transitions, 0 flow [2022-11-16 11:06:26,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=0, PETRI_PLACES=243, PETRI_TRANSITIONS=0} [2022-11-16 11:06:26,085 INFO L288 CegarLoopForPetriNet]: 143 programPoint places, 100 predicate places. [2022-11-16 11:06:26,085 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 0 transitions, 0 flow [2022-11-16 11:06:26,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 136.6875) internal successors, (2187), 16 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states 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 11:06:26,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-16 11:06:26,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-16 11:06:26,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-16 11:06:26,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-16 11:06:26,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-16 11:06:26,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-16 11:06:26,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-16 11:06:26,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-16 11:06:26,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-16 11:06:26,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-16 11:06:26,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-16 11:06:26,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-16 11:06:26,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-16 11:06:26,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-16 11:06:26,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-16 11:06:26,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-16 11:06:26,094 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-16 11:06:26,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:06:26,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:06:26,300 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:06:26,310 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:06:26,310 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:06:26,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:06:26 BasicIcfg [2022-11-16 11:06:26,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:06:26,320 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:06:26,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:06:26,320 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:06:26,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:05:30" (3/4) ... [2022-11-16 11:06:26,324 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:06:26,328 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:06:26,328 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:06:26,328 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 11:06:26,334 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-16 11:06:26,334 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:06:26,334 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:06:26,334 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:06:26,381 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:06:26,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:06:26,383 INFO L158 Benchmark]: Toolchain (without parser) took 57094.98ms. Allocated memory was 115.3MB in the beginning and 11.6GB in the end (delta: 11.5GB). Free memory was 85.9MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-16 11:06:26,384 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory was 69.0MB in the beginning and 68.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:06:26,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.58ms. Allocated memory is still 115.3MB. Free memory was 85.5MB in the beginning and 90.1MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:06:26,385 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.13ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:06:26,385 INFO L158 Benchmark]: Boogie Preprocessor took 67.21ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 86.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:06:26,385 INFO L158 Benchmark]: RCFGBuilder took 931.85ms. Allocated memory is still 115.3MB. Free memory was 86.7MB in the beginning and 65.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-16 11:06:26,386 INFO L158 Benchmark]: TraceAbstraction took 55492.97ms. Allocated memory was 115.3MB in the beginning and 11.6GB in the end (delta: 11.5GB). Free memory was 65.0MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-11-16 11:06:26,386 INFO L158 Benchmark]: Witness Printer took 61.97ms. Allocated memory is still 11.6GB. Free memory was 9.7GB in the beginning and 9.7GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:06:26,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory was 69.0MB in the beginning and 68.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.58ms. Allocated memory is still 115.3MB. Free memory was 85.5MB in the beginning and 90.1MB in the end (delta: -4.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.13ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.21ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 86.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 931.85ms. Allocated memory is still 115.3MB. Free memory was 86.7MB in the beginning and 65.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 55492.97ms. Allocated memory was 115.3MB in the beginning and 11.6GB in the end (delta: 11.5GB). Free memory was 65.0MB in the beginning and 9.7GB in the end (delta: -9.6GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 61.97ms. Allocated memory is still 11.6GB. Free memory was 9.7GB in the beginning and 9.7GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: 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: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: 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, 199 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 55.3s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 44.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3255 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3255 mSDsluCounter, 419 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 91 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3075 IncrementalHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 91 mSolverCounterUnsat, 92 mSDtfsCounter, 3075 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1679 GetRequests, 1374 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=798occurred in iteration=15, InterpolantAutomatonStates: 218, 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: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2198 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2683 ConstructedInterpolants, 0 QuantifiedInterpolants, 5517 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1975 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:06:26,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b08a8f8e-e465-4496-a48f-b3abd80a5c9d/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