./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a --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 f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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-b5237d8 [2022-11-21 17:26:51,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:26:51,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:26:51,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:26:51,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:26:51,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:26:51,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:26:51,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:26:51,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:26:51,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:26:51,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:26:51,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:26:51,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:26:51,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:26:51,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:26:51,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:26:51,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:26:51,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:26:51,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:26:51,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:26:51,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:26:51,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:26:51,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:26:51,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:26:51,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:26:51,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:26:51,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:26:51,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:26:51,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:26:51,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:26:51,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:26:51,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:26:51,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:26:51,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:26:51,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:26:51,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:26:51,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:26:51,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:26:51,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:26:51,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:26:51,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:26:51,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:26:51,822 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:26:51,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:26:51,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:26:51,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:26:51,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:26:51,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:26:51,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:26:51,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:26:51,826 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:26:51,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:26:51,827 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:26:51,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:26:51,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:26:51,828 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:26:51,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:26:51,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:26:51,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:26:51,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:26:51,830 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:26:51,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:26:51,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:26:51,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:26:51,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:26:51,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:26:51,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:26:51,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:26:51,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:26:51,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:26:51,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:26:51,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:26:51,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:26:51,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:26:51,834 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:26:51,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:26:51,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:26:51,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-21 17:26:52,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:26:52,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:26:52,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:26:52,247 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:26:52,248 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:26:52,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-21 17:26:55,542 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:26:55,828 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:26:55,845 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-21 17:26:55,861 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/data/8c988cf8a/8b799875588041389f00e9b223a0a11a/FLAGbb61932da [2022-11-21 17:26:55,935 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/data/8c988cf8a/8b799875588041389f00e9b223a0a11a [2022-11-21 17:26:55,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:26:55,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:26:55,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:26:55,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:26:55,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:26:55,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:26:55" (1/1) ... [2022-11-21 17:26:55,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147da6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:55, skipping insertion in model container [2022-11-21 17:26:55,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:26:55" (1/1) ... [2022-11-21 17:26:55,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:26:55,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:26:56,215 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_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-21 17:26:56,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:26:56,233 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:26:56,274 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_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-21 17:26:56,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:26:56,297 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:26:56,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56 WrapperNode [2022-11-21 17:26:56,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:26:56,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:26:56,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:26:56,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:26:56,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,365 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-11-21 17:26:56,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:26:56,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:26:56,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:26:56,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:26:56,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:26:56,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:26:56,452 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:26:56,452 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:26:56,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (1/1) ... [2022-11-21 17:26:56,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:26:56,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:26:56,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:26:56,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:26:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:26:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:26:56,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:26:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:26:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 17:26:56,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 17:26:56,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 17:26:56,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 17:26:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 17:26:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 17:26:56,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-21 17:26:56,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-21 17:26:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:26:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 17:26:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 17:26:56,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 17:26:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:26:56,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:26:56,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:26:56,570 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 17:26:56,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:26:56,751 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:26:57,862 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:26:58,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:26:58,436 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-21 17:26:58,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:26:58 BoogieIcfgContainer [2022-11-21 17:26:58,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:26:58,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:26:58,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:26:58,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:26:58,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:26:55" (1/3) ... [2022-11-21 17:26:58,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4fde2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:26:58, skipping insertion in model container [2022-11-21 17:26:58,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:26:56" (2/3) ... [2022-11-21 17:26:58,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4fde2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:26:58, skipping insertion in model container [2022-11-21 17:26:58,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:26:58" (3/3) ... [2022-11-21 17:26:58,457 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-21 17:26:58,469 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 17:26:58,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:26:58,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-21 17:26:58,482 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 17:26:58,752 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 17:26:58,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 367 transitions, 766 flow [2022-11-21 17:26:58,981 INFO L130 PetriNetUnfolder]: 25/363 cut-off events. [2022-11-21 17:26:58,982 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-21 17:26:58,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 363 events. 25/363 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-11-21 17:26:58,991 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 367 transitions, 766 flow [2022-11-21 17:26:59,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 340 transitions, 701 flow [2022-11-21 17:26:59,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:26:59,034 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;@74f69557, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:26:59,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-21 17:26:59,070 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-21 17:26:59,071 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 17:26:59,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:26:59,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:59,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 17:26:59,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:59,085 INFO L85 PathProgramCache]: Analyzing trace with hash 867123507, now seen corresponding path program 1 times [2022-11-21 17:26:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:59,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279456897] [2022-11-21 17:26:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:59,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:26:59,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:59,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279456897] [2022-11-21 17:26:59,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279456897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:26:59,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:26:59,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:26:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771519996] [2022-11-21 17:26:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:26:59,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:26:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:26:59,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:26:59,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-21 17:26:59,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 340 transitions, 701 flow. Second operand has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:26:59,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:26:59,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-21 17:26:59,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:27:04,816 INFO L130 PetriNetUnfolder]: 6441/9073 cut-off events. [2022-11-21 17:27:04,817 INFO L131 PetriNetUnfolder]: For 1010/1014 co-relation queries the response was YES. [2022-11-21 17:27:04,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18984 conditions, 9073 events. 6441/9073 cut-off events. For 1010/1014 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 48858 event pairs, 4782 based on Foata normal form. 1660/6651 useless extension candidates. Maximal degree in co-relation 9063. Up to 4373 conditions per place. [2022-11-21 17:27:04,934 INFO L137 encePairwiseOnDemand]: 312/367 looper letters, 126 selfloop transitions, 19 changer transitions 8/378 dead transitions. [2022-11-21 17:27:04,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 378 transitions, 1088 flow [2022-11-21 17:27:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:27:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 17:27:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2022-11-21 17:27:04,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8098092643051771 [2022-11-21 17:27:04,955 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2022-11-21 17:27:04,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2022-11-21 17:27:04,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:27:04,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2022-11-21 17:27:04,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:04,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:04,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:04,980 INFO L175 Difference]: Start difference. First operand has 329 places, 340 transitions, 701 flow. Second operand 5 states and 1486 transitions. [2022-11-21 17:27:04,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 378 transitions, 1088 flow [2022-11-21 17:27:04,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 378 transitions, 1062 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-21 17:27:04,994 INFO L231 Difference]: Finished difference. Result has 317 places, 319 transitions, 757 flow [2022-11-21 17:27:04,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=317, PETRI_TRANSITIONS=319} [2022-11-21 17:27:05,000 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -12 predicate places. [2022-11-21 17:27:05,001 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 319 transitions, 757 flow [2022-11-21 17:27:05,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:05,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:27:05,002 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:05,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:27:05,003 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 17:27:05,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:05,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1846259264, now seen corresponding path program 1 times [2022-11-21 17:27:05,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:05,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494861519] [2022-11-21 17:27:05,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:05,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:05,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:05,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494861519] [2022-11-21 17:27:05,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494861519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:05,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744587797] [2022-11-21 17:27:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:05,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:05,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:05,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:05,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:27:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:05,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:27:05,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:05,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:05,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:05,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744587797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:05,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:27:05,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 17:27:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329363727] [2022-11-21 17:27:05,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:05,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:27:05,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:27:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:27:05,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-21 17:27:05,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 319 transitions, 757 flow. Second operand has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:05,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:27:05,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-21 17:27:05,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:27:14,469 INFO L130 PetriNetUnfolder]: 16101/22486 cut-off events. [2022-11-21 17:27:14,469 INFO L131 PetriNetUnfolder]: For 479/489 co-relation queries the response was YES. [2022-11-21 17:27:14,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46628 conditions, 22486 events. 16101/22486 cut-off events. For 479/489 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 129216 event pairs, 11955 based on Foata normal form. 12/12333 useless extension candidates. Maximal degree in co-relation 36692. Up to 4362 conditions per place. [2022-11-21 17:27:14,709 INFO L137 encePairwiseOnDemand]: 336/367 looper letters, 267 selfloop transitions, 84 changer transitions 0/576 dead transitions. [2022-11-21 17:27:14,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 576 transitions, 2111 flow [2022-11-21 17:27:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 17:27:14,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 17:27:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4989 transitions. [2022-11-21 17:27:14,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7552225249772934 [2022-11-21 17:27:14,721 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4989 transitions. [2022-11-21 17:27:14,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4989 transitions. [2022-11-21 17:27:14,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:27:14,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4989 transitions. [2022-11-21 17:27:14,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.1666666666667) internal successors, (4989), 18 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:14,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:14,756 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:14,757 INFO L175 Difference]: Start difference. First operand has 317 places, 319 transitions, 757 flow. Second operand 18 states and 4989 transitions. [2022-11-21 17:27:14,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 576 transitions, 2111 flow [2022-11-21 17:27:14,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 576 transitions, 2100 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 17:27:14,773 INFO L231 Difference]: Finished difference. Result has 329 places, 376 transitions, 1248 flow [2022-11-21 17:27:14,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1248, PETRI_PLACES=329, PETRI_TRANSITIONS=376} [2022-11-21 17:27:14,775 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 0 predicate places. [2022-11-21 17:27:14,775 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 376 transitions, 1248 flow [2022-11-21 17:27:14,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:14,781 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:27:14,782 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:14,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:14,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-21 17:27:14,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 17:27:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:14,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1399463769, now seen corresponding path program 1 times [2022-11-21 17:27:14,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:14,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088627059] [2022-11-21 17:27:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:14,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:15,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:15,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:15,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088627059] [2022-11-21 17:27:15,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088627059] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:15,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007308085] [2022-11-21 17:27:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:15,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:15,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:15,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:15,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:27:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:15,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 17:27:15,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:15,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:27:15,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007308085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:15,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:27:15,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 17:27:15,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269181152] [2022-11-21 17:27:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:27:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:15,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:27:15,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:27:15,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-21 17:27:15,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 376 transitions, 1248 flow. Second operand has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:15,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:27:15,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-21 17:27:15,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:27:22,500 INFO L130 PetriNetUnfolder]: 16101/22470 cut-off events. [2022-11-21 17:27:22,500 INFO L131 PetriNetUnfolder]: For 689/699 co-relation queries the response was YES. [2022-11-21 17:27:22,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46703 conditions, 22470 events. 16101/22470 cut-off events. For 689/699 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 129404 event pairs, 11955 based on Foata normal form. 16/12321 useless extension candidates. Maximal degree in co-relation 37304. Up to 17348 conditions per place. [2022-11-21 17:27:22,882 INFO L137 encePairwiseOnDemand]: 344/367 looper letters, 127 selfloop transitions, 59 changer transitions 0/411 dead transitions. [2022-11-21 17:27:22,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 411 transitions, 1630 flow [2022-11-21 17:27:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:27:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 17:27:22,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1944 transitions. [2022-11-21 17:27:22,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7567146749708058 [2022-11-21 17:27:22,888 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1944 transitions. [2022-11-21 17:27:22,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1944 transitions. [2022-11-21 17:27:22,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:27:22,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1944 transitions. [2022-11-21 17:27:22,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:22,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:22,900 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:22,900 INFO L175 Difference]: Start difference. First operand has 329 places, 376 transitions, 1248 flow. Second operand 7 states and 1944 transitions. [2022-11-21 17:27:22,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 411 transitions, 1630 flow [2022-11-21 17:27:22,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 411 transitions, 1472 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-21 17:27:22,915 INFO L231 Difference]: Finished difference. Result has 322 places, 360 transitions, 1100 flow [2022-11-21 17:27:22,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1100, PETRI_PLACES=322, PETRI_TRANSITIONS=360} [2022-11-21 17:27:22,917 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -7 predicate places. [2022-11-21 17:27:22,918 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 360 transitions, 1100 flow [2022-11-21 17:27:22,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:22,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:27:22,919 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:22,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:23,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:23,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 17:27:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 127637107, now seen corresponding path program 2 times [2022-11-21 17:27:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:23,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297713885] [2022-11-21 17:27:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:23,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:23,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:23,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297713885] [2022-11-21 17:27:23,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297713885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:23,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109233742] [2022-11-21 17:27:23,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:27:23,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:23,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:23,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:23,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:27:23,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 17:27:23,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:23,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:27:23,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 17:27:23,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-21 17:27:24,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109233742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:24,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:27:24,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-21 17:27:24,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900895295] [2022-11-21 17:27:24,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:24,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 17:27:24,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:24,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 17:27:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:27:24,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-11-21 17:27:24,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 360 transitions, 1100 flow. Second operand has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:24,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:27:24,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-11-21 17:27:24,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:27:29,808 INFO L130 PetriNetUnfolder]: 7988/11916 cut-off events. [2022-11-21 17:27:29,809 INFO L131 PetriNetUnfolder]: For 595/602 co-relation queries the response was YES. [2022-11-21 17:27:29,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24616 conditions, 11916 events. 7988/11916 cut-off events. For 595/602 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 62832 event pairs, 5306 based on Foata normal form. 8/8466 useless extension candidates. Maximal degree in co-relation 20160. Up to 1593 conditions per place. [2022-11-21 17:27:29,891 INFO L137 encePairwiseOnDemand]: 325/367 looper letters, 333 selfloop transitions, 129 changer transitions 0/662 dead transitions. [2022-11-21 17:27:29,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 662 transitions, 2819 flow [2022-11-21 17:27:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-21 17:27:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-21 17:27:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 11880 transitions. [2022-11-21 17:27:29,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6606239225935606 [2022-11-21 17:27:29,915 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 11880 transitions. [2022-11-21 17:27:29,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 11880 transitions. [2022-11-21 17:27:29,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:27:29,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 11880 transitions. [2022-11-21 17:27:29,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 242.44897959183675) internal successors, (11880), 49 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:29,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:29,982 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:29,982 INFO L175 Difference]: Start difference. First operand has 322 places, 360 transitions, 1100 flow. Second operand 49 states and 11880 transitions. [2022-11-21 17:27:29,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 662 transitions, 2819 flow [2022-11-21 17:27:29,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 662 transitions, 2724 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 17:27:29,996 INFO L231 Difference]: Finished difference. Result has 362 places, 409 transitions, 1559 flow [2022-11-21 17:27:29,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1559, PETRI_PLACES=362, PETRI_TRANSITIONS=409} [2022-11-21 17:27:29,997 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 33 predicate places. [2022-11-21 17:27:29,998 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 409 transitions, 1559 flow [2022-11-21 17:27:29,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:29,999 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:27:30,000 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:30,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:30,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:30,207 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 17:27:30,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1915746962, now seen corresponding path program 1 times [2022-11-21 17:27:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:30,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289331632] [2022-11-21 17:27:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:30,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:30,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289331632] [2022-11-21 17:27:30,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289331632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:30,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067733926] [2022-11-21 17:27:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:30,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:30,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:30,702 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:30,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:27:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:30,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:27:30,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:31,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:31,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067733926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:31,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:27:31,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-21 17:27:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569973077] [2022-11-21 17:27:31,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:31,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:27:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:31,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:27:31,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:27:31,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-21 17:27:31,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 409 transitions, 1559 flow. Second operand has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:31,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:27:31,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-21 17:27:31,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 17:27:41,451 INFO L130 PetriNetUnfolder]: 17116/25419 cut-off events. [2022-11-21 17:27:41,451 INFO L131 PetriNetUnfolder]: For 1956/1971 co-relation queries the response was YES. [2022-11-21 17:27:41,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52818 conditions, 25419 events. 17116/25419 cut-off events. For 1956/1971 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 141911 event pairs, 11370 based on Foata normal form. 24/18093 useless extension candidates. Maximal degree in co-relation 52018. Up to 2625 conditions per place. [2022-11-21 17:27:41,658 INFO L137 encePairwiseOnDemand]: 341/367 looper letters, 686 selfloop transitions, 218 changer transitions 0/1135 dead transitions. [2022-11-21 17:27:41,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1135 transitions, 5875 flow [2022-11-21 17:27:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-21 17:27:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-21 17:27:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12236 transitions. [2022-11-21 17:27:41,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7577408967054744 [2022-11-21 17:27:41,681 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12236 transitions. [2022-11-21 17:27:41,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12236 transitions. [2022-11-21 17:27:41,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:27:41,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12236 transitions. [2022-11-21 17:27:41,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 278.09090909090907) internal successors, (12236), 44 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:41,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:41,738 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:41,739 INFO L175 Difference]: Start difference. First operand has 362 places, 409 transitions, 1559 flow. Second operand 44 states and 12236 transitions. [2022-11-21 17:27:41,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1135 transitions, 5875 flow [2022-11-21 17:27:41,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1135 transitions, 5533 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-11-21 17:27:41,765 INFO L231 Difference]: Finished difference. Result has 399 places, 535 transitions, 2771 flow [2022-11-21 17:27:41,766 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2771, PETRI_PLACES=399, PETRI_TRANSITIONS=535} [2022-11-21 17:27:41,769 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 70 predicate places. [2022-11-21 17:27:41,769 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 535 transitions, 2771 flow [2022-11-21 17:27:41,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:41,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 17:27:41,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:41,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:41,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebe8b8d5-4db6-4900-8a61-0ad6f9c7da0c/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:41,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-21 17:27:41,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2011792613, now seen corresponding path program 1 times [2022-11-21 17:27:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:41,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587937538] [2022-11-21 17:27:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:41,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:27:42,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:42,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587937538] [2022-11-21 17:27:42,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587937538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:27:42,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:27:42,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:27:42,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644575643] [2022-11-21 17:27:42,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:27:42,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:27:42,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:42,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:27:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:27:42,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-11-21 17:27:42,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 535 transitions, 2771 flow. Second operand has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:27:42,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 17:27:42,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-11-21 17:27:42,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand