./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8 --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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- 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-2329fc7 [2022-12-13 13:01:36,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:01:36,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:01:36,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:01:36,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:01:36,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:01:36,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:01:36,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:01:36,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:01:36,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:01:36,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:01:36,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:01:36,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:01:36,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:01:36,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:01:36,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:01:36,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:01:36,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:01:36,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:01:36,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:01:36,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:01:36,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:01:36,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:01:36,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:01:36,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:01:36,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:01:36,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:01:36,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:01:36,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:01:36,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:01:36,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:01:36,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:01:36,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:01:36,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:01:36,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:01:36,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:01:36,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:01:36,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:01:36,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:01:36,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:01:36,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:01:36,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 13:01:36,743 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:01:36,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:01:36,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:01:36,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:01:36,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:01:36,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:01:36,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:01:36,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:01:36,744 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:01:36,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:01:36,745 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:01:36,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:01:36,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:01:36,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:01:36,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:01:36,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:01:36,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:01:36,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:01:36,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:01:36,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:01:36,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:01:36,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:01:36,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:01:36,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:01:36,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:01:36,747 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:01:36,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:01:36,748 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:01:36,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:01:36,748 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:01:36,748 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-12-13 13:01:36,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:01:36,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:01:36,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:01:36,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:01:36,936 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:01:36,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-12-13 13:01:39,427 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:01:39,579 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:01:39,579 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-12-13 13:01:39,584 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/data/5c10a39e0/cf65eb97401046fba8a13501e83e19b4/FLAG5634ee9be [2022-12-13 13:01:39,594 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/data/5c10a39e0/cf65eb97401046fba8a13501e83e19b4 [2022-12-13 13:01:39,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:01:39,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:01:39,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:01:39,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:01:39,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:01:39,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f937d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39, skipping insertion in model container [2022-12-13 13:01:39,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:01:39,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:01:39,789 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-12-13 13:01:39,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:01:39,802 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:01:39,828 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-12-13 13:01:39,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:01:39,842 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:01:39,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39 WrapperNode [2022-12-13 13:01:39,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:01:39,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:01:39,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:01:39,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:01:39,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,890 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 478 [2022-12-13 13:01:39,891 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:01:39,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:01:39,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:01:39,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:01:39,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,927 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:01:39,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:01:39,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:01:39,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:01:39,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (1/1) ... [2022-12-13 13:01:39,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:01:39,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:01:39,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:01:39,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:01:39,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:01:39,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:01:39,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:01:39,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:01:39,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:01:39,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:01:39,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:01:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:01:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:01:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:01:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:01:39,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:01:39,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:01:39,996 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:01:40,094 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:01:40,096 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:01:40,643 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:01:40,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:01:40,658 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 13:01:40,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:01:40 BoogieIcfgContainer [2022-12-13 13:01:40,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:01:40,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:01:40,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:01:40,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:01:40,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:01:39" (1/3) ... [2022-12-13 13:01:40,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eeabc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:01:40, skipping insertion in model container [2022-12-13 13:01:40,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:01:39" (2/3) ... [2022-12-13 13:01:40,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eeabc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:01:40, skipping insertion in model container [2022-12-13 13:01:40,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:01:40" (3/3) ... [2022-12-13 13:01:40,670 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-12-13 13:01:40,678 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:01:40,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:01:40,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-12-13 13:01:40,688 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:01:40,826 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 13:01:40,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 659 transitions, 1334 flow [2022-12-13 13:01:41,032 INFO L130 PetriNetUnfolder]: 61/657 cut-off events. [2022-12-13 13:01:41,032 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:01:41,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 657 events. 61/657 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2400 event pairs, 0 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-12-13 13:01:41,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 605 places, 659 transitions, 1334 flow [2022-12-13 13:01:41,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 586 places, 639 transitions, 1290 flow [2022-12-13 13:01:41,059 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:01:41,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 586 places, 639 transitions, 1290 flow [2022-12-13 13:01:41,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 586 places, 639 transitions, 1290 flow [2022-12-13 13:01:41,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 586 places, 639 transitions, 1290 flow [2022-12-13 13:01:41,178 INFO L130 PetriNetUnfolder]: 60/639 cut-off events. [2022-12-13 13:01:41,178 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:01:41,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 639 events. 60/639 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2300 event pairs, 0 based on Foata normal form. 0/538 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-12-13 13:01:41,211 INFO L119 LiptonReduction]: Number of co-enabled transitions 119448 [2022-12-13 13:02:14,650 INFO L134 LiptonReduction]: Checked pairs total: 117245 [2022-12-13 13:02:14,650 INFO L136 LiptonReduction]: Total number of compositions: 868 [2022-12-13 13:02:14,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:02:14,666 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;@38d472ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:02:14,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-12-13 13:02:14,667 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 13:02:14,667 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:02:14,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:14,668 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:02:14,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 93406, now seen corresponding path program 1 times [2022-12-13 13:02:14,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:14,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111710356] [2022-12-13 13:02:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:14,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:14,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:14,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111710356] [2022-12-13 13:02:14,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111710356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:14,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:14,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:02:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20536989] [2022-12-13 13:02:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:14,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:14,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:14,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1527 [2022-12-13 13:02:14,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:14,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:14,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1527 [2022-12-13 13:02:14,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:15,772 INFO L130 PetriNetUnfolder]: 2789/4477 cut-off events. [2022-12-13 13:02:15,772 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-12-13 13:02:15,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9100 conditions, 4477 events. 2789/4477 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 25268 event pairs, 2262 based on Foata normal form. 2/1875 useless extension candidates. Maximal degree in co-relation 4398. Up to 2242 conditions per place. [2022-12-13 13:02:15,797 INFO L137 encePairwiseOnDemand]: 1506/1527 looper letters, 113 selfloop transitions, 4 changer transitions 2/119 dead transitions. [2022-12-13 13:02:15,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 119 transitions, 500 flow [2022-12-13 13:02:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2012 transitions. [2022-12-13 13:02:15,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4392054136651386 [2022-12-13 13:02:15,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2012 transitions. [2022-12-13 13:02:15,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2012 transitions. [2022-12-13 13:02:15,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:15,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2012 transitions. [2022-12-13 13:02:15,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.6666666666666) internal successors, (2012), 3 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:15,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:15,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:15,852 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 162 flow. Second operand 3 states and 2012 transitions. [2022-12-13 13:02:15,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 119 transitions, 500 flow [2022-12-13 13:02:15,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 484 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 13:02:15,863 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 161 flow [2022-12-13 13:02:15,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2022-12-13 13:02:15,868 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2022-12-13 13:02:15,868 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 161 flow [2022-12-13 13:02:15,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:15,869 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:15,870 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:02:15,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:02:15,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:15,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:15,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2902564, now seen corresponding path program 1 times [2022-12-13 13:02:15,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:15,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786090691] [2022-12-13 13:02:15,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:15,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:15,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:15,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786090691] [2022-12-13 13:02:15,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786090691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:15,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214107448] [2022-12-13 13:02:15,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:15,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:15,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:15,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:02:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:16,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:02:16,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:16,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:16,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214107448] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:16,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:16,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 13:02:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786463252] [2022-12-13 13:02:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:16,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:02:16,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:02:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:02:16,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1527 [2022-12-13 13:02:16,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:16,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:16,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1527 [2022-12-13 13:02:16,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:16,905 INFO L130 PetriNetUnfolder]: 2789/4473 cut-off events. [2022-12-13 13:02:16,906 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 13:02:16,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9019 conditions, 4473 events. 2789/4473 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 25110 event pairs, 2262 based on Foata normal form. 0/1875 useless extension candidates. Maximal degree in co-relation 4498. Up to 2238 conditions per place. [2022-12-13 13:02:16,919 INFO L137 encePairwiseOnDemand]: 1521/1527 looper letters, 111 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2022-12-13 13:02:16,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 115 transitions, 492 flow [2022-12-13 13:02:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:02:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:02:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2601 transitions. [2022-12-13 13:02:16,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4258349705304519 [2022-12-13 13:02:16,929 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2601 transitions. [2022-12-13 13:02:16,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2601 transitions. [2022-12-13 13:02:16,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:16,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2601 transitions. [2022-12-13 13:02:16,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 650.25) internal successors, (2601), 4 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:16,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1527.0) internal successors, (7635), 5 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:16,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1527.0) internal successors, (7635), 5 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:16,942 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 161 flow. Second operand 4 states and 2601 transitions. [2022-12-13 13:02:16,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 115 transitions, 492 flow [2022-12-13 13:02:16,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 115 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:02:16,944 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 153 flow [2022-12-13 13:02:16,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2022-12-13 13:02:16,944 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -15 predicate places. [2022-12-13 13:02:16,944 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 153 flow [2022-12-13 13:02:16,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:16,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:16,946 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:02:16,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:02:17,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:17,147 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:17,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2902566, now seen corresponding path program 1 times [2022-12-13 13:02:17,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:17,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325185662] [2022-12-13 13:02:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:17,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325185662] [2022-12-13 13:02:17,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325185662] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943199646] [2022-12-13 13:02:17,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:17,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:17,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:17,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:02:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:17,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:02:17,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:17,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:02:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:17,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943199646] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:02:17,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:02:17,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 13:02:17,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521133590] [2022-12-13 13:02:17,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:02:17,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:02:17,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:02:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:02:17,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1527 [2022-12-13 13:02:17,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 622.1428571428571) internal successors, (4355), 7 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:17,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:17,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1527 [2022-12-13 13:02:17,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:19,109 INFO L130 PetriNetUnfolder]: 6971/11178 cut-off events. [2022-12-13 13:02:19,109 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 13:02:19,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22525 conditions, 11178 events. 6971/11178 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 71842 event pairs, 5655 based on Foata normal form. 0/4686 useless extension candidates. Maximal degree in co-relation 17983. Up to 2239 conditions per place. [2022-12-13 13:02:19,153 INFO L137 encePairwiseOnDemand]: 1521/1527 looper letters, 270 selfloop transitions, 13 changer transitions 0/283 dead transitions. [2022-12-13 13:02:19,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 283 transitions, 1197 flow [2022-12-13 13:02:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:02:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:02:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4015 transitions. [2022-12-13 13:02:19,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43822309539401877 [2022-12-13 13:02:19,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4015 transitions. [2022-12-13 13:02:19,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4015 transitions. [2022-12-13 13:02:19,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:19,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4015 transitions. [2022-12-13 13:02:19,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 669.1666666666666) internal successors, (4015), 6 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:19,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1527.0) internal successors, (10689), 7 states have internal predecessors, (10689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:19,182 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1527.0) internal successors, (10689), 7 states have internal predecessors, (10689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:19,182 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 153 flow. Second operand 6 states and 4015 transitions. [2022-12-13 13:02:19,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 283 transitions, 1197 flow [2022-12-13 13:02:19,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 283 transitions, 1189 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:02:19,186 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 244 flow [2022-12-13 13:02:19,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2022-12-13 13:02:19,187 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2022-12-13 13:02:19,187 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 244 flow [2022-12-13 13:02:19,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 622.1428571428571) internal successors, (4355), 7 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:19,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:19,188 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:02:19,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:02:19,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:19,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:19,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1502192714, now seen corresponding path program 1 times [2022-12-13 13:02:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:19,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584973432] [2022-12-13 13:02:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:19,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:19,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584973432] [2022-12-13 13:02:19,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584973432] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:19,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:19,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:02:19,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110504119] [2022-12-13 13:02:19,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:19,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:19,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:19,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:19,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:19,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1527 [2022-12-13 13:02:19,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:19,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:19,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1527 [2022-12-13 13:02:19,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:20,620 INFO L130 PetriNetUnfolder]: 5577/8945 cut-off events. [2022-12-13 13:02:20,621 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-13 13:02:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18058 conditions, 8945 events. 5577/8945 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 56636 event pairs, 4524 based on Foata normal form. 2/3755 useless extension candidates. Maximal degree in co-relation 17993. Up to 8941 conditions per place. [2022-12-13 13:02:20,647 INFO L137 encePairwiseOnDemand]: 1522/1527 looper letters, 63 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2022-12-13 13:02:20,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 380 flow [2022-12-13 13:02:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:20,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1920 transitions. [2022-12-13 13:02:20,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41912246234446626 [2022-12-13 13:02:20,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1920 transitions. [2022-12-13 13:02:20,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1920 transitions. [2022-12-13 13:02:20,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:20,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1920 transitions. [2022-12-13 13:02:20,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 640.0) internal successors, (1920), 3 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:20,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:20,661 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:20,661 INFO L175 Difference]: Start difference. First operand has 64 places, 71 transitions, 244 flow. Second operand 3 states and 1920 transitions. [2022-12-13 13:02:20,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 380 flow [2022-12-13 13:02:20,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 361 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:20,664 INFO L231 Difference]: Finished difference. Result has 66 places, 70 transitions, 244 flow [2022-12-13 13:02:20,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=66, PETRI_TRANSITIONS=70} [2022-12-13 13:02:20,664 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2022-12-13 13:02:20,664 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 70 transitions, 244 flow [2022-12-13 13:02:20,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:20,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:20,665 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 13:02:20,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:02:20,665 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash 577867360, now seen corresponding path program 2 times [2022-12-13 13:02:20,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:20,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855084026] [2022-12-13 13:02:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:20,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:02:20,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:20,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855084026] [2022-12-13 13:02:20,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855084026] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:20,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337172034] [2022-12-13 13:02:20,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:02:20,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:20,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:20,739 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:20,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:02:20,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:02:20,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:02:20,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:02:20,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:02:20,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:20,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337172034] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:20,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:20,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 13:02:20,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624491871] [2022-12-13 13:02:20,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:20,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:02:20,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 623 out of 1527 [2022-12-13 13:02:20,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 70 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 624.0) internal successors, (1872), 3 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:20,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:20,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 623 of 1527 [2022-12-13 13:02:20,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:21,946 INFO L130 PetriNetUnfolder]: 5577/8943 cut-off events. [2022-12-13 13:02:21,946 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-12-13 13:02:21,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18050 conditions, 8943 events. 5577/8943 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 56668 event pairs, 4524 based on Foata normal form. 2/3753 useless extension candidates. Maximal degree in co-relation 17988. Up to 8943 conditions per place. [2022-12-13 13:02:21,968 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 67 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2022-12-13 13:02:21,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 360 flow [2022-12-13 13:02:21,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1928 transitions. [2022-12-13 13:02:21,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4208688059375682 [2022-12-13 13:02:21,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1928 transitions. [2022-12-13 13:02:21,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1928 transitions. [2022-12-13 13:02:21,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:21,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1928 transitions. [2022-12-13 13:02:21,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 642.6666666666666) internal successors, (1928), 3 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:21,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:21,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:21,980 INFO L175 Difference]: Start difference. First operand has 66 places, 70 transitions, 244 flow. Second operand 3 states and 1928 transitions. [2022-12-13 13:02:21,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 360 flow [2022-12-13 13:02:21,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 68 transitions, 320 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-13 13:02:21,981 INFO L231 Difference]: Finished difference. Result has 60 places, 68 transitions, 186 flow [2022-12-13 13:02:21,981 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=60, PETRI_TRANSITIONS=68} [2022-12-13 13:02:21,982 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2022-12-13 13:02:21,982 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 68 transitions, 186 flow [2022-12-13 13:02:21,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 624.0) internal successors, (1872), 3 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:21,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:21,982 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:21,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:02:22,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:22,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash 833378522, now seen corresponding path program 1 times [2022-12-13 13:02:22,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:22,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515544712] [2022-12-13 13:02:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:22,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:22,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:02:22,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515544712] [2022-12-13 13:02:22,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515544712] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:22,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111132284] [2022-12-13 13:02:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:22,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:22,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:22,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:22,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:02:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:22,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:02:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:02:22,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:02:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:02:22,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111132284] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:02:22,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:02:22,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-12-13 13:02:22,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595118422] [2022-12-13 13:02:22,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:02:22,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:02:22,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:22,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:02:22,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:02:22,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1527 [2022-12-13 13:02:22,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 68 transitions, 186 flow. Second operand has 8 states, 8 states have (on average 616.875) internal successors, (4935), 8 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:22,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:22,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1527 [2022-12-13 13:02:22,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:22,890 INFO L130 PetriNetUnfolder]: 1395/2244 cut-off events. [2022-12-13 13:02:22,890 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 13:02:22,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4539 conditions, 2244 events. 1395/2244 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 10957 event pairs, 1131 based on Foata normal form. 6/952 useless extension candidates. Maximal degree in co-relation 4530. Up to 2237 conditions per place. [2022-12-13 13:02:22,895 INFO L137 encePairwiseOnDemand]: 1522/1527 looper letters, 55 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2022-12-13 13:02:22,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 298 flow [2022-12-13 13:02:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:02:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:02:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3761 transitions. [2022-12-13 13:02:22,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41049989085352545 [2022-12-13 13:02:22,901 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3761 transitions. [2022-12-13 13:02:22,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3761 transitions. [2022-12-13 13:02:22,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:22,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3761 transitions. [2022-12-13 13:02:22,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 626.8333333333334) internal successors, (3761), 6 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:22,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1527.0) internal successors, (10689), 7 states have internal predecessors, (10689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:22,918 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1527.0) internal successors, (10689), 7 states have internal predecessors, (10689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:22,918 INFO L175 Difference]: Start difference. First operand has 60 places, 68 transitions, 186 flow. Second operand 6 states and 3761 transitions. [2022-12-13 13:02:22,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 298 flow [2022-12-13 13:02:22,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:22,920 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 205 flow [2022-12-13 13:02:22,920 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2022-12-13 13:02:22,921 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2022-12-13 13:02:22,921 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 205 flow [2022-12-13 13:02:22,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 616.875) internal successors, (4935), 8 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:22,923 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:22,923 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2022-12-13 13:02:22,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:02:23,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 13:02:23,125 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1224060490, now seen corresponding path program 2 times [2022-12-13 13:02:23,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096401495] [2022-12-13 13:02:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:02:23,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096401495] [2022-12-13 13:02:23,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096401495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49572573] [2022-12-13 13:02:23,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:02:23,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:23,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:23,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:23,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:02:23,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:02:23,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:02:23,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:02:23,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:23,430 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-13 13:02:23,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:23,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49572573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:23,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:23,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [7] total 8 [2022-12-13 13:02:23,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147508393] [2022-12-13 13:02:23,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:23,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:02:23,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:23,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:23,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:23,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:23,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:23,862 INFO L130 PetriNetUnfolder]: 1261/2026 cut-off events. [2022-12-13 13:02:23,862 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-13 13:02:23,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4124 conditions, 2026 events. 1261/2026 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9616 event pairs, 1011 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 4111. Up to 2026 conditions per place. [2022-12-13 13:02:23,868 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 13:02:23,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 327 flow [2022-12-13 13:02:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:23,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:23,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1932 transitions. [2022-12-13 13:02:23,871 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4217419777341192 [2022-12-13 13:02:23,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1932 transitions. [2022-12-13 13:02:23,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1932 transitions. [2022-12-13 13:02:23,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:23,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1932 transitions. [2022-12-13 13:02:23,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 644.0) internal successors, (1932), 3 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:23,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:23,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:23,879 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 205 flow. Second operand 3 states and 1932 transitions. [2022-12-13 13:02:23,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 327 flow [2022-12-13 13:02:23,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 307 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 13:02:23,881 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 183 flow [2022-12-13 13:02:23,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2022-12-13 13:02:23,882 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2022-12-13 13:02:23,882 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 183 flow [2022-12-13 13:02:23,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:23,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:23,882 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2022-12-13 13:02:23,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:02:24,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 13:02:24,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1224060492, now seen corresponding path program 1 times [2022-12-13 13:02:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:24,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687515267] [2022-12-13 13:02:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:24,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:02:24,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:24,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687515267] [2022-12-13 13:02:24,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687515267] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:24,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356011116] [2022-12-13 13:02:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:24,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:24,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:24,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:24,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:02:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:24,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:02:24,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:02:24,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:02:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 13:02:24,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356011116] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:02:24,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:02:24,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-12-13 13:02:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989724305] [2022-12-13 13:02:24,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:02:24,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:02:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:02:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:02:24,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1527 [2022-12-13 13:02:24,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 183 flow. Second operand has 17 states, 17 states have (on average 616.4117647058823) internal successors, (10479), 17 states have internal predecessors, (10479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:24,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:24,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1527 [2022-12-13 13:02:24,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:25,024 INFO L130 PetriNetUnfolder]: 1261/2028 cut-off events. [2022-12-13 13:02:25,024 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-12-13 13:02:25,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 2028 events. 1261/2028 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9614 event pairs, 1011 based on Foata normal form. 2/878 useless extension candidates. Maximal degree in co-relation 4108. Up to 2019 conditions per place. [2022-12-13 13:02:25,029 INFO L137 encePairwiseOnDemand]: 1522/1527 looper letters, 53 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2022-12-13 13:02:25,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 321 flow [2022-12-13 13:02:25,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:02:25,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:02:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4372 transitions. [2022-12-13 13:02:25,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40901861727009076 [2022-12-13 13:02:25,034 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4372 transitions. [2022-12-13 13:02:25,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4372 transitions. [2022-12-13 13:02:25,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:25,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4372 transitions. [2022-12-13 13:02:25,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 624.5714285714286) internal successors, (4372), 7 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1527.0) internal successors, (12216), 8 states have internal predecessors, (12216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1527.0) internal successors, (12216), 8 states have internal predecessors, (12216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,046 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 183 flow. Second operand 7 states and 4372 transitions. [2022-12-13 13:02:25,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 321 flow [2022-12-13 13:02:25,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:25,047 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 224 flow [2022-12-13 13:02:25,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=224, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2022-12-13 13:02:25,048 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2022-12-13 13:02:25,048 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 224 flow [2022-12-13 13:02:25,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 616.4117647058823) internal successors, (10479), 17 states have internal predecessors, (10479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:25,050 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2022-12-13 13:02:25,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:02:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:25,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:25,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1880916847, now seen corresponding path program 1 times [2022-12-13 13:02:25,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:25,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126578702] [2022-12-13 13:02:25,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:25,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:25,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126578702] [2022-12-13 13:02:25,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126578702] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:25,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:25,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:02:25,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184346649] [2022-12-13 13:02:25,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:25,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:25,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:25,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:25,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:25,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:25,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:25,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:25,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:25,637 INFO L130 PetriNetUnfolder]: 1133/1820 cut-off events. [2022-12-13 13:02:25,637 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 13:02:25,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3722 conditions, 1820 events. 1133/1820 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8415 event pairs, 897 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 3707. Up to 1820 conditions per place. [2022-12-13 13:02:25,641 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 13:02:25,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 346 flow [2022-12-13 13:02:25,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:25,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:25,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1930 transitions. [2022-12-13 13:02:25,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4213053918358437 [2022-12-13 13:02:25,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1930 transitions. [2022-12-13 13:02:25,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1930 transitions. [2022-12-13 13:02:25,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:25,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1930 transitions. [2022-12-13 13:02:25,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 643.3333333333334) internal successors, (1930), 3 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,650 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 224 flow. Second operand 3 states and 1930 transitions. [2022-12-13 13:02:25,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 346 flow [2022-12-13 13:02:25,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 326 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 13:02:25,651 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 202 flow [2022-12-13 13:02:25,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2022-12-13 13:02:25,652 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2022-12-13 13:02:25,652 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 202 flow [2022-12-13 13:02:25,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:25,652 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2022-12-13 13:02:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:02:25,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1880916777, now seen corresponding path program 1 times [2022-12-13 13:02:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:25,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586967093] [2022-12-13 13:02:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:25,697 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:25,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586967093] [2022-12-13 13:02:25,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586967093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:25,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:25,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:02:25,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077470662] [2022-12-13 13:02:25,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:25,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:25,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:25,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:25,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:25,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:25,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:25,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:26,007 INFO L130 PetriNetUnfolder]: 1011/1622 cut-off events. [2022-12-13 13:02:26,007 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 13:02:26,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 1622 events. 1011/1622 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7293 event pairs, 789 based on Foata normal form. 0/738 useless extension candidates. Maximal degree in co-relation 3301. Up to 1622 conditions per place. [2022-12-13 13:02:26,011 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2022-12-13 13:02:26,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 320 flow [2022-12-13 13:02:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1928 transitions. [2022-12-13 13:02:26,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4208688059375682 [2022-12-13 13:02:26,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1928 transitions. [2022-12-13 13:02:26,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1928 transitions. [2022-12-13 13:02:26,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:26,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1928 transitions. [2022-12-13 13:02:26,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 642.6666666666666) internal successors, (1928), 3 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,019 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 202 flow. Second operand 3 states and 1928 transitions. [2022-12-13 13:02:26,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 320 flow [2022-12-13 13:02:26,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:26,020 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 199 flow [2022-12-13 13:02:26,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2022-12-13 13:02:26,021 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2022-12-13 13:02:26,021 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 199 flow [2022-12-13 13:02:26,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,021 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:26,021 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2022-12-13 13:02:26,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 13:02:26,021 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:26,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:26,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1880916776, now seen corresponding path program 2 times [2022-12-13 13:02:26,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:26,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698537872] [2022-12-13 13:02:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:26,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698537872] [2022-12-13 13:02:26,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698537872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:26,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:26,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:02:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169318164] [2022-12-13 13:02:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:26,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:26,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:26,093 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:26,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:26,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:26,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:26,364 INFO L130 PetriNetUnfolder]: 895/1434 cut-off events. [2022-12-13 13:02:26,364 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 13:02:26,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 1434 events. 895/1434 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6168 event pairs, 687 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 2924. Up to 1434 conditions per place. [2022-12-13 13:02:26,368 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 58 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 13:02:26,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 313 flow [2022-12-13 13:02:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:26,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1926 transitions. [2022-12-13 13:02:26,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4204322200392927 [2022-12-13 13:02:26,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1926 transitions. [2022-12-13 13:02:26,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1926 transitions. [2022-12-13 13:02:26,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:26,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1926 transitions. [2022-12-13 13:02:26,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 642.0) internal successors, (1926), 3 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,376 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 199 flow. Second operand 3 states and 1926 transitions. [2022-12-13 13:02:26,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 313 flow [2022-12-13 13:02:26,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:26,377 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 196 flow [2022-12-13 13:02:26,377 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2022-12-13 13:02:26,377 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2022-12-13 13:02:26,377 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 196 flow [2022-12-13 13:02:26,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:26,377 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:26,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 13:02:26,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1821120824, now seen corresponding path program 1 times [2022-12-13 13:02:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:26,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315258170] [2022-12-13 13:02:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:26,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:26,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315258170] [2022-12-13 13:02:26,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315258170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:26,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:26,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:02:26,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931157055] [2022-12-13 13:02:26,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:26,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:26,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:26,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:26,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1527 [2022-12-13 13:02:26,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:26,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1527 [2022-12-13 13:02:26,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:26,878 INFO L130 PetriNetUnfolder]: 1391/2214 cut-off events. [2022-12-13 13:02:26,878 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-12-13 13:02:26,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 2214 events. 1391/2214 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9598 event pairs, 687 based on Foata normal form. 0/1130 useless extension candidates. Maximal degree in co-relation 4496. Up to 1435 conditions per place. [2022-12-13 13:02:26,883 INFO L137 encePairwiseOnDemand]: 1515/1527 looper letters, 88 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2022-12-13 13:02:26,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 440 flow [2022-12-13 13:02:26,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:26,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1947 transitions. [2022-12-13 13:02:26,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42501637197118536 [2022-12-13 13:02:26,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1947 transitions. [2022-12-13 13:02:26,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1947 transitions. [2022-12-13 13:02:26,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:26,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1947 transitions. [2022-12-13 13:02:26,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 649.0) internal successors, (1947), 3 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,890 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 196 flow. Second operand 3 states and 1947 transitions. [2022-12-13 13:02:26,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 440 flow [2022-12-13 13:02:26,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 439 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:26,892 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 225 flow [2022-12-13 13:02:26,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=225, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2022-12-13 13:02:26,892 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2022-12-13 13:02:26,892 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 225 flow [2022-12-13 13:02:26,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:26,893 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:26,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 13:02:26,893 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:26,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2041783613, now seen corresponding path program 1 times [2022-12-13 13:02:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:26,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39800484] [2022-12-13 13:02:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:26,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:26,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:26,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39800484] [2022-12-13 13:02:26,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39800484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:26,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:26,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:02:26,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058113819] [2022-12-13 13:02:26,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:26,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:26,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:26,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:26,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:26,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1527 [2022-12-13 13:02:26,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:26,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:26,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1527 [2022-12-13 13:02:26,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:27,502 INFO L130 PetriNetUnfolder]: 1637/2608 cut-off events. [2022-12-13 13:02:27,502 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2022-12-13 13:02:27,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5667 conditions, 2608 events. 1637/2608 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11991 event pairs, 1065 based on Foata normal form. 0/1478 useless extension candidates. Maximal degree in co-relation 5648. Up to 2215 conditions per place. [2022-12-13 13:02:27,508 INFO L137 encePairwiseOnDemand]: 1518/1527 looper letters, 91 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2022-12-13 13:02:27,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 93 transitions, 506 flow [2022-12-13 13:02:27,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1945 transitions. [2022-12-13 13:02:27,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42457978607290986 [2022-12-13 13:02:27,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1945 transitions. [2022-12-13 13:02:27,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1945 transitions. [2022-12-13 13:02:27,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:27,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1945 transitions. [2022-12-13 13:02:27,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 648.3333333333334) internal successors, (1945), 3 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,515 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 225 flow. Second operand 3 states and 1945 transitions. [2022-12-13 13:02:27,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 93 transitions, 506 flow [2022-12-13 13:02:27,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 93 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:27,517 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 247 flow [2022-12-13 13:02:27,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2022-12-13 13:02:27,517 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2022-12-13 13:02:27,517 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 247 flow [2022-12-13 13:02:27,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:27,518 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:27,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 13:02:27,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:27,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1129214719, now seen corresponding path program 1 times [2022-12-13 13:02:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:27,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566676079] [2022-12-13 13:02:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566676079] [2022-12-13 13:02:27,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566676079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:27,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:27,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:02:27,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952960878] [2022-12-13 13:02:27,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:27,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:27,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1527 [2022-12-13 13:02:27,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:27,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1527 [2022-12-13 13:02:27,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:27,953 INFO L130 PetriNetUnfolder]: 1391/2214 cut-off events. [2022-12-13 13:02:27,953 INFO L131 PetriNetUnfolder]: For 386/386 co-relation queries the response was YES. [2022-12-13 13:02:27,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5468 conditions, 2214 events. 1391/2214 cut-off events. For 386/386 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9472 event pairs, 1065 based on Foata normal form. 0/1514 useless extension candidates. Maximal degree in co-relation 5448. Up to 2214 conditions per place. [2022-12-13 13:02:27,958 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 58 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 13:02:27,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 357 flow [2022-12-13 13:02:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:27,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1906 transitions. [2022-12-13 13:02:27,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4160663610565379 [2022-12-13 13:02:27,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1906 transitions. [2022-12-13 13:02:27,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1906 transitions. [2022-12-13 13:02:27,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:27,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1906 transitions. [2022-12-13 13:02:27,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 635.3333333333334) internal successors, (1906), 3 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,965 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,965 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 247 flow. Second operand 3 states and 1906 transitions. [2022-12-13 13:02:27,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 357 flow [2022-12-13 13:02:27,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 59 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:27,968 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 239 flow [2022-12-13 13:02:27,968 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2022-12-13 13:02:27,968 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2022-12-13 13:02:27,969 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 239 flow [2022-12-13 13:02:27,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:27,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:27,969 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:27,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:02:27,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:27,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1129214718, now seen corresponding path program 1 times [2022-12-13 13:02:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:27,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725685250] [2022-12-13 13:02:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:28,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:28,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725685250] [2022-12-13 13:02:28,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725685250] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:28,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804722820] [2022-12-13 13:02:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:28,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:28,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:28,031 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:28,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:02:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:28,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:02:28,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:28,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:28,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804722820] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:28,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:28,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 13:02:28,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834859977] [2022-12-13 13:02:28,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:28,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:02:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:28,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:02:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:02:28,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1527 [2022-12-13 13:02:28,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:28,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:28,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1527 [2022-12-13 13:02:28,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:28,647 INFO L130 PetriNetUnfolder]: 1317/2140 cut-off events. [2022-12-13 13:02:28,647 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-12-13 13:02:28,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 2140 events. 1317/2140 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10163 event pairs, 209 based on Foata normal form. 0/1514 useless extension candidates. Maximal degree in co-relation 5152. Up to 1256 conditions per place. [2022-12-13 13:02:28,653 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 119 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2022-12-13 13:02:28,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 121 transitions, 657 flow [2022-12-13 13:02:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:02:28,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:02:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2585 transitions. [2022-12-13 13:02:28,656 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42321545514079895 [2022-12-13 13:02:28,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2585 transitions. [2022-12-13 13:02:28,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2585 transitions. [2022-12-13 13:02:28,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:28,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2585 transitions. [2022-12-13 13:02:28,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 646.25) internal successors, (2585), 4 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:28,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1527.0) internal successors, (7635), 5 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:28,662 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1527.0) internal successors, (7635), 5 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:28,662 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 239 flow. Second operand 4 states and 2585 transitions. [2022-12-13 13:02:28,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 121 transitions, 657 flow [2022-12-13 13:02:28,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 121 transitions, 656 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:28,664 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 238 flow [2022-12-13 13:02:28,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2022-12-13 13:02:28,664 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2022-12-13 13:02:28,664 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 238 flow [2022-12-13 13:02:28,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:28,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:28,665 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:28,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:02:28,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:28,866 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:28,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:28,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1129214708, now seen corresponding path program 1 times [2022-12-13 13:02:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393085033] [2022-12-13 13:02:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:28,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:28,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:28,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393085033] [2022-12-13 13:02:28,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393085033] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:28,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789908461] [2022-12-13 13:02:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:28,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:28,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:28,971 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:28,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:02:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:29,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:02:29,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 13:02:29,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:29,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789908461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:29,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:29,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 13:02:29,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132445332] [2022-12-13 13:02:29,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:29,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:29,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:29,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:29,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:02:29,126 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:29,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:29,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:29,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:29,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:29,471 INFO L130 PetriNetUnfolder]: 1165/1894 cut-off events. [2022-12-13 13:02:29,471 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-12-13 13:02:29,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4692 conditions, 1894 events. 1165/1894 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8046 event pairs, 931 based on Foata normal form. 0/1398 useless extension candidates. Maximal degree in co-relation 4671. Up to 1894 conditions per place. [2022-12-13 13:02:29,476 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-12-13 13:02:29,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 342 flow [2022-12-13 13:02:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:29,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1921 transitions. [2022-12-13 13:02:29,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41934075529360404 [2022-12-13 13:02:29,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1921 transitions. [2022-12-13 13:02:29,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1921 transitions. [2022-12-13 13:02:29,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:29,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1921 transitions. [2022-12-13 13:02:29,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 640.3333333333334) internal successors, (1921), 3 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:29,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:29,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:29,485 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 238 flow. Second operand 3 states and 1921 transitions. [2022-12-13 13:02:29,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 342 flow [2022-12-13 13:02:29,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:02:29,487 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 229 flow [2022-12-13 13:02:29,487 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2022-12-13 13:02:29,488 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2022-12-13 13:02:29,488 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 229 flow [2022-12-13 13:02:29,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:29,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:29,488 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:29,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 13:02:29,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:29,690 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:29,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1129214709, now seen corresponding path program 1 times [2022-12-13 13:02:29,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:29,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856196744] [2022-12-13 13:02:29,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:29,844 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:29,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856196744] [2022-12-13 13:02:29,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856196744] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:29,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271590997] [2022-12-13 13:02:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:29,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:29,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:29,846 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:29,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:02:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:02:29,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 13:02:29,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:29,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271590997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:29,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:29,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 13:02:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520389129] [2022-12-13 13:02:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:29,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:02:30,004 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:30,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:30,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:30,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:30,310 INFO L130 PetriNetUnfolder]: 1019/1658 cut-off events. [2022-12-13 13:02:30,310 INFO L131 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2022-12-13 13:02:30,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 1658 events. 1019/1658 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6753 event pairs, 803 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 4000. Up to 1658 conditions per place. [2022-12-13 13:02:30,315 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-12-13 13:02:30,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 329 flow [2022-12-13 13:02:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1919 transitions. [2022-12-13 13:02:30,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41890416939532854 [2022-12-13 13:02:30,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1919 transitions. [2022-12-13 13:02:30,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1919 transitions. [2022-12-13 13:02:30,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:30,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1919 transitions. [2022-12-13 13:02:30,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,322 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 229 flow. Second operand 3 states and 1919 transitions. [2022-12-13 13:02:30,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 329 flow [2022-12-13 13:02:30,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:30,323 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 222 flow [2022-12-13 13:02:30,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2022-12-13 13:02:30,323 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2022-12-13 13:02:30,323 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 222 flow [2022-12-13 13:02:30,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:30,324 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:30,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 13:02:30,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:30,525 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:30,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:30,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1129214778, now seen corresponding path program 1 times [2022-12-13 13:02:30,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:30,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252237151] [2022-12-13 13:02:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 13:02:30,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:30,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252237151] [2022-12-13 13:02:30,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252237151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:30,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:02:30,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:02:30,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142103076] [2022-12-13 13:02:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:30,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:30,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:02:30,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:30,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:30,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:30,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:30,946 INFO L130 PetriNetUnfolder]: 879/1432 cut-off events. [2022-12-13 13:02:30,946 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-12-13 13:02:30,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452 conditions, 1432 events. 879/1432 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5575 event pairs, 681 based on Foata normal form. 0/1172 useless extension candidates. Maximal degree in co-relation 3429. Up to 1432 conditions per place. [2022-12-13 13:02:30,950 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-12-13 13:02:30,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 318 flow [2022-12-13 13:02:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1917 transitions. [2022-12-13 13:02:30,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41846758349705304 [2022-12-13 13:02:30,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1917 transitions. [2022-12-13 13:02:30,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1917 transitions. [2022-12-13 13:02:30,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:30,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1917 transitions. [2022-12-13 13:02:30,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,957 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,957 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 222 flow. Second operand 3 states and 1917 transitions. [2022-12-13 13:02:30,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 318 flow [2022-12-13 13:02:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 52 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:30,958 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 215 flow [2022-12-13 13:02:30,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2022-12-13 13:02:30,959 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2022-12-13 13:02:30,959 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 215 flow [2022-12-13 13:02:30,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:30,959 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:30,959 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:30,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:02:30,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:30,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:30,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1129214751, now seen corresponding path program 1 times [2022-12-13 13:02:30,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:30,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119285795] [2022-12-13 13:02:30,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:30,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:31,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119285795] [2022-12-13 13:02:31,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119285795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:31,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551066278] [2022-12-13 13:02:31,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:31,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:31,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:31,037 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:31,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:02:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:31,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:02:31,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 13:02:31,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:31,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551066278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:31,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 13:02:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759220314] [2022-12-13 13:02:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:02:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:02:31,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:02:31,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1527 [2022-12-13 13:02:31,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 215 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:31,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:31,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1527 [2022-12-13 13:02:31,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:31,485 INFO L130 PetriNetUnfolder]: 745/1216 cut-off events. [2022-12-13 13:02:31,485 INFO L131 PetriNetUnfolder]: For 201/201 co-relation queries the response was YES. [2022-12-13 13:02:31,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2910 conditions, 1216 events. 745/1216 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4535 event pairs, 565 based on Foata normal form. 14/1062 useless extension candidates. Maximal degree in co-relation 2886. Up to 1216 conditions per place. [2022-12-13 13:02:31,488 INFO L137 encePairwiseOnDemand]: 1524/1527 looper letters, 45 selfloop transitions, 1 changer transitions 4/50 dead transitions. [2022-12-13 13:02:31,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 50 transitions, 307 flow [2022-12-13 13:02:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:02:31,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:02:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1915 transitions. [2022-12-13 13:02:31,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41803099759877754 [2022-12-13 13:02:31,490 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1915 transitions. [2022-12-13 13:02:31,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1915 transitions. [2022-12-13 13:02:31,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:31,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1915 transitions. [2022-12-13 13:02:31,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 638.3333333333334) internal successors, (1915), 3 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:31,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:31,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1527.0) internal successors, (6108), 4 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:31,495 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 215 flow. Second operand 3 states and 1915 transitions. [2022-12-13 13:02:31,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 50 transitions, 307 flow [2022-12-13 13:02:31,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:31,496 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 199 flow [2022-12-13 13:02:31,496 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2022-12-13 13:02:31,496 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2022-12-13 13:02:31,496 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 199 flow [2022-12-13 13:02:31,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:31,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:31,497 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:31,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 13:02:31,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:31,698 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:31,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash 602116969, now seen corresponding path program 1 times [2022-12-13 13:02:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:31,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888043748] [2022-12-13 13:02:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:31,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:31,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888043748] [2022-12-13 13:02:31,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888043748] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:31,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478913159] [2022-12-13 13:02:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:31,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:31,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:31,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:02:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:31,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:02:31,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:31,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:02:31,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478913159] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:02:31,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:02:31,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 13:02:31,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957415169] [2022-12-13 13:02:31,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:02:31,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:02:31,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:31,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:02:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:02:31,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1527 [2022-12-13 13:02:31,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 623.75) internal successors, (2495), 4 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:31,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:31,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1527 [2022-12-13 13:02:31,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:32,235 INFO L130 PetriNetUnfolder]: 607/984 cut-off events. [2022-12-13 13:02:32,235 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2022-12-13 13:02:32,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 984 events. 607/984 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3439 event pairs, 5 based on Foata normal form. 0/886 useless extension candidates. Maximal degree in co-relation 2319. Up to 532 conditions per place. [2022-12-13 13:02:32,238 INFO L137 encePairwiseOnDemand]: 1522/1527 looper letters, 70 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-12-13 13:02:32,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 405 flow [2022-12-13 13:02:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:02:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:02:32,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2538 transitions. [2022-12-13 13:02:32,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4155206286836935 [2022-12-13 13:02:32,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2538 transitions. [2022-12-13 13:02:32,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2538 transitions. [2022-12-13 13:02:32,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:32,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2538 transitions. [2022-12-13 13:02:32,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 634.5) internal successors, (2538), 4 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:32,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1527.0) internal successors, (7635), 5 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:32,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1527.0) internal successors, (7635), 5 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:32,247 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 199 flow. Second operand 4 states and 2538 transitions. [2022-12-13 13:02:32,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 405 flow [2022-12-13 13:02:32,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 72 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:02:32,248 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 190 flow [2022-12-13 13:02:32,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2022-12-13 13:02:32,249 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -16 predicate places. [2022-12-13 13:02:32,249 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 190 flow [2022-12-13 13:02:32,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 623.75) internal successors, (2495), 4 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:32,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:32,249 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:32,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 13:02:32,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:32,451 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash 602116970, now seen corresponding path program 1 times [2022-12-13 13:02:32,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:32,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818538921] [2022-12-13 13:02:32,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:32,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:32,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818538921] [2022-12-13 13:02:32,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818538921] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891992610] [2022-12-13 13:02:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:32,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:32,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:32,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:32,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:02:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:32,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:02:32,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:32,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:02:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:32,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891992610] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:02:32,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:02:32,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 13:02:32,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572772123] [2022-12-13 13:02:32,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:02:32,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:02:32,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:32,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:02:32,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:02:32,775 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 617 out of 1527 [2022-12-13 13:02:32,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 622.8571428571429) internal successors, (4360), 7 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:32,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:32,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 617 of 1527 [2022-12-13 13:02:32,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:33,199 INFO L130 PetriNetUnfolder]: 849/1366 cut-off events. [2022-12-13 13:02:33,199 INFO L131 PetriNetUnfolder]: For 269/269 co-relation queries the response was YES. [2022-12-13 13:02:33,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 1366 events. 849/1366 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4729 event pairs, 239 based on Foata normal form. 42/1268 useless extension candidates. Maximal degree in co-relation 3201. Up to 534 conditions per place. [2022-12-13 13:02:33,202 INFO L137 encePairwiseOnDemand]: 1521/1527 looper letters, 81 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2022-12-13 13:02:33,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 460 flow [2022-12-13 13:02:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:02:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:02:33,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3161 transitions. [2022-12-13 13:02:33,206 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41401440733464306 [2022-12-13 13:02:33,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3161 transitions. [2022-12-13 13:02:33,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3161 transitions. [2022-12-13 13:02:33,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:33,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3161 transitions. [2022-12-13 13:02:33,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 632.2) internal successors, (3161), 5 states have internal predecessors, (3161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:33,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1527.0) internal successors, (9162), 6 states have internal predecessors, (9162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:33,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1527.0) internal successors, (9162), 6 states have internal predecessors, (9162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:33,213 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 190 flow. Second operand 5 states and 3161 transitions. [2022-12-13 13:02:33,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 460 flow [2022-12-13 13:02:33,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 457 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:02:33,214 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 203 flow [2022-12-13 13:02:33,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2022-12-13 13:02:33,215 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2022-12-13 13:02:33,215 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 203 flow [2022-12-13 13:02:33,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 622.8571428571429) internal successors, (4360), 7 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:33,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:02:33,215 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:33,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:02:33,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 13:02:33,416 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-12-13 13:02:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:02:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2132168528, now seen corresponding path program 1 times [2022-12-13 13:02:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:02:33,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165481650] [2022-12-13 13:02:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:33,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:02:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:02:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165481650] [2022-12-13 13:02:33,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165481650] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:02:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376217144] [2022-12-13 13:02:33,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:02:33,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:02:33,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:02:33,538 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:02:33,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:02:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:02:33,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:02:33,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:02:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:33,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:02:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 13:02:33,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376217144] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:02:33,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:02:33,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-13 13:02:33,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298334935] [2022-12-13 13:02:33,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:02:33,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 13:02:33,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:02:33,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 13:02:33,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-12-13 13:02:33,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1527 [2022-12-13 13:02:33,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 203 flow. Second operand has 9 states, 9 states have (on average 624.7777777777778) internal successors, (5623), 9 states have internal predecessors, (5623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:33,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:02:33,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1527 [2022-12-13 13:02:33,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:02:34,314 INFO L130 PetriNetUnfolder]: 1091/1748 cut-off events. [2022-12-13 13:02:34,315 INFO L131 PetriNetUnfolder]: For 432/432 co-relation queries the response was YES. [2022-12-13 13:02:34,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 1748 events. 1091/1748 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5975 event pairs, 5 based on Foata normal form. 28/1608 useless extension candidates. Maximal degree in co-relation 4111. Up to 430 conditions per place. [2022-12-13 13:02:34,318 INFO L137 encePairwiseOnDemand]: 1522/1527 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2022-12-13 13:02:34,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 122 transitions, 641 flow [2022-12-13 13:02:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:02:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:02:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4436 transitions. [2022-12-13 13:02:34,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41500608101786884 [2022-12-13 13:02:34,323 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4436 transitions. [2022-12-13 13:02:34,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4436 transitions. [2022-12-13 13:02:34,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:02:34,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4436 transitions. [2022-12-13 13:02:34,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 633.7142857142857) internal successors, (4436), 7 states have internal predecessors, (4436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:34,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1527.0) internal successors, (12216), 8 states have internal predecessors, (12216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:34,337 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1527.0) internal successors, (12216), 8 states have internal predecessors, (12216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:34,337 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 203 flow. Second operand 7 states and 4436 transitions. [2022-12-13 13:02:34,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 122 transitions, 641 flow [2022-12-13 13:02:34,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 122 transitions, 633 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 13:02:34,340 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2022-12-13 13:02:34,340 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1527, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2022-12-13 13:02:34,340 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2022-12-13 13:02:34,340 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2022-12-13 13:02:34,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 624.7777777777778) internal successors, (5623), 9 states have internal predecessors, (5623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:02:34,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 80 remaining) [2022-12-13 13:02:34,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 80 remaining) [2022-12-13 13:02:34,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 80 remaining) [2022-12-13 13:02:34,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 80 remaining) [2022-12-13 13:02:34,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 80 remaining) [2022-12-13 13:02:34,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 80 remaining) [2022-12-13 13:02:34,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 80 remaining) [2022-12-13 13:02:34,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 80 remaining) [2022-12-13 13:02:34,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 80 remaining) [2022-12-13 13:02:34,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 80 remaining) [2022-12-13 13:02:34,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 80 remaining) [2022-12-13 13:02:34,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 80 remaining) [2022-12-13 13:02:34,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 80 remaining) [2022-12-13 13:02:34,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 80 remaining) [2022-12-13 13:02:34,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 13:02:34,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-13 13:02:34,553 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:02:34,557 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:02:34,558 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:02:34,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:02:34 BasicIcfg [2022-12-13 13:02:34,561 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:02:34,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:02:34,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:02:34,561 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:02:34,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:01:40" (3/4) ... [2022-12-13 13:02:34,564 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:02:34,570 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 13:02:34,570 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 13:02:34,574 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-12-13 13:02:34,574 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 13:02:34,574 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:02:34,575 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:02:34,608 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:02:34,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:02:34,609 INFO L158 Benchmark]: Toolchain (without parser) took 55011.56ms. Allocated memory was 132.1MB in the beginning and 1.0GB in the end (delta: 895.5MB). Free memory was 97.7MB in the beginning and 538.0MB in the end (delta: -440.3MB). Peak memory consumption was 457.9MB. Max. memory is 16.1GB. [2022-12-13 13:02:34,609 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory was 75.3MB in the beginning and 75.1MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:02:34,609 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.15ms. Allocated memory is still 132.1MB. Free memory was 97.7MB in the beginning and 84.3MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:02:34,610 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.85ms. Allocated memory is still 132.1MB. Free memory was 84.3MB in the beginning and 80.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:02:34,610 INFO L158 Benchmark]: Boogie Preprocessor took 42.95ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 78.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:02:34,610 INFO L158 Benchmark]: RCFGBuilder took 725.90ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 78.0MB in the beginning and 115.6MB in the end (delta: -37.5MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-12-13 13:02:34,610 INFO L158 Benchmark]: TraceAbstraction took 53896.96ms. Allocated memory was 159.4MB in the beginning and 1.0GB in the end (delta: 868.2MB). Free memory was 114.8MB in the beginning and 542.7MB in the end (delta: -427.9MB). Peak memory consumption was 747.2MB. Max. memory is 16.1GB. [2022-12-13 13:02:34,610 INFO L158 Benchmark]: Witness Printer took 47.57ms. Allocated memory is still 1.0GB. Free memory was 542.7MB in the beginning and 538.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:02:34,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 132.1MB. Free memory was 75.3MB in the beginning and 75.1MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.15ms. Allocated memory is still 132.1MB. Free memory was 97.7MB in the beginning and 84.3MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.85ms. Allocated memory is still 132.1MB. Free memory was 84.3MB in the beginning and 80.9MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.95ms. Allocated memory is still 132.1MB. Free memory was 80.9MB in the beginning and 78.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 725.90ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 78.0MB in the beginning and 115.6MB in the end (delta: -37.5MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * TraceAbstraction took 53896.96ms. Allocated memory was 159.4MB in the beginning and 1.0GB in the end (delta: 868.2MB). Free memory was 114.8MB in the beginning and 542.7MB in the end (delta: -427.9MB). Peak memory consumption was 747.2MB. Max. memory is 16.1GB. * Witness Printer took 47.57ms. Allocated memory is still 1.0GB. Free memory was 542.7MB in the beginning and 538.0MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.6s, 586 PlacesBefore, 73 PlacesAfterwards, 639 TransitionsBefore, 75 TransitionsAfterwards, 119448 CoEnabledTransitionPairs, 10 FixpointIterations, 144 TrivialSequentialCompositions, 511 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 141 ConcurrentYvCompositions, 51 ChoiceCompositions, 868 TotalNumberOfCompositions, 117245 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 112864, independent: 112708, independent conditional: 0, independent unconditional: 112708, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 71503, independent: 71479, independent conditional: 0, independent unconditional: 71479, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 112864, independent: 41229, independent conditional: 0, independent unconditional: 41229, dependent: 132, dependent conditional: 0, dependent unconditional: 132, unknown: 71503, unknown conditional: 0, unknown unconditional: 71503] , Statistics on independence cache: Total cache size (in pairs): 399, Positive cache size: 386, Positive conditional cache size: 0, Positive unconditional cache size: 386, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: 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: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: 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: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 1025 locations, 80 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 53.7s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 33.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2434 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1903 mSDsluCounter, 123 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3868 IncrementalHoareTripleChecker+Invalid, 4074 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 123 mSDtfsCounter, 3868 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 344 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=13, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 548 NumberOfCodeBlocks, 536 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 595 ConstructedInterpolants, 0 QuantifiedInterpolants, 1437 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2876 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 40 InterpolantComputations, 17 PerfectInterpolantSequences, 774/911 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 42 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 13:02:34,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffd83ca6-77a0-4b25-baf5-dde0c5be7231/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE