./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/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_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/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_eedf093e-6523-46f3-8e5a-b2364faeb0b1/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 b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 --- 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 11:11:53,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:11:53,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:11:53,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:11:53,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:11:53,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:11:53,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:11:53,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:11:53,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:11:53,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:11:53,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:11:53,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:11:53,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:11:53,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:11:53,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:11:53,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:11:53,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:11:53,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:11:53,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:11:53,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:11:53,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:11:53,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:11:53,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:11:53,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:11:53,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:11:53,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:11:53,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:11:53,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:11:53,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:11:53,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:11:53,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:11:53,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:11:53,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:11:53,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:11:53,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:11:53,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:11:53,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:11:53,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:11:53,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:11:53,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:11:53,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:11:53,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 11:11:53,910 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:11:53,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:11:53,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:11:53,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:11:53,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:11:53,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:11:53,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:11:53,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:11:53,912 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:11:53,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:11:53,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:11:53,918 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:11:53,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:11:53,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:11:53,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:11:53,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:11:53,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:11:53,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:11:53,919 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:11:53,919 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:11:53,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:11:53,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:11:53,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:11:53,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:11:53,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:11:53,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:11:53,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:11:53,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:11:53,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:11:53,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:11:53,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:11:53,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:11:53,922 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:11:53,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:11:53,922 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:11:53,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:11:53,922 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:11:53,922 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_eedf093e-6523-46f3-8e5a-b2364faeb0b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8118921f4e94a266cc060fbf2fdaa97ed8f96343f174115bf05a8f09a1b77a8 [2022-12-13 11:11:54,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:11:54,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:11:54,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:11:54,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:11:54,135 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:11:54,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/reorder_2.i [2022-12-13 11:11:56,728 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:11:56,977 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:11:56,977 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/sv-benchmarks/c/pthread/reorder_2.i [2022-12-13 11:11:56,991 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/data/dd8cd2adb/c7dd474d876c4cfb958917eb7191a02a/FLAGc28aa2238 [2022-12-13 11:11:57,316 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/data/dd8cd2adb/c7dd474d876c4cfb958917eb7191a02a [2022-12-13 11:11:57,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:11:57,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:11:57,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:11:57,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:11:57,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:11:57,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@968d013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57, skipping insertion in model container [2022-12-13 11:11:57,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:11:57,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:11:57,723 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,729 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,731 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,733 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,734 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,736 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,737 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_eedf093e-6523-46f3-8e5a-b2364faeb0b1/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2022-12-13 11:11:57,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:11:57,743 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:11:57,771 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,774 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,775 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,776 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,777 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,779 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 11:11:57,779 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_eedf093e-6523-46f3-8e5a-b2364faeb0b1/sv-benchmarks/c/pthread/reorder_2.i[59859,59872] [2022-12-13 11:11:57,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:11:57,854 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:11:57,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57 WrapperNode [2022-12-13 11:11:57,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:11:57,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:11:57,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:11:57,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:11:57,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,900 INFO L138 Inliner]: procedures = 370, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 156 [2022-12-13 11:11:57,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:11:57,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:11:57,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:11:57,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:11:57,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:11:57,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:11:57,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:11:57,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:11:57,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (1/1) ... [2022-12-13 11:11:57,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:11:57,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:11:57,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:11:57,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:11:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:11:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:11:57,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:11:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-12-13 11:11:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-12-13 11:11:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:11:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:11:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-12-13 11:11:57,996 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-12-13 11:11:57,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:11:57,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:11:57,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:11:57,998 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 11:11:58,108 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:11:58,109 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:11:58,324 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:11:58,333 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:11:58,333 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 11:11:58,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:11:58 BoogieIcfgContainer [2022-12-13 11:11:58,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:11:58,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:11:58,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:11:58,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:11:58,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:11:57" (1/3) ... [2022-12-13 11:11:58,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c75372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:11:58, skipping insertion in model container [2022-12-13 11:11:58,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:11:57" (2/3) ... [2022-12-13 11:11:58,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74c75372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:11:58, skipping insertion in model container [2022-12-13 11:11:58,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:11:58" (3/3) ... [2022-12-13 11:11:58,344 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2022-12-13 11:11:58,353 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:11:58,363 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:11:58,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 11:11:58,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:11:58,419 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 11:11:58,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 187 transitions, 396 flow [2022-12-13 11:11:58,555 INFO L130 PetriNetUnfolder]: 37/382 cut-off events. [2022-12-13 11:11:58,555 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 11:11:58,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 37/382 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1307 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 200. Up to 8 conditions per place. [2022-12-13 11:11:58,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 187 transitions, 396 flow [2022-12-13 11:11:58,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 187 transitions, 396 flow [2022-12-13 11:11:58,572 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:11:58,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 187 transitions, 396 flow [2022-12-13 11:11:58,585 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 187 transitions, 396 flow [2022-12-13 11:11:58,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 187 transitions, 396 flow [2022-12-13 11:11:58,630 INFO L130 PetriNetUnfolder]: 37/382 cut-off events. [2022-12-13 11:11:58,630 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 11:11:58,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 382 events. 37/382 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1307 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 200. Up to 8 conditions per place. [2022-12-13 11:11:58,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 2440 [2022-12-13 11:12:05,171 INFO L134 LiptonReduction]: Checked pairs total: 3493 [2022-12-13 11:12:05,172 INFO L136 LiptonReduction]: Total number of compositions: 193 [2022-12-13 11:12:05,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:12:05,190 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;@6057c755, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:12:05,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 11:12:05,194 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-13 11:12:05,194 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:12:05,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:05,195 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 11:12:05,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:05,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash 20878880, now seen corresponding path program 1 times [2022-12-13 11:12:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:05,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636842554] [2022-12-13 11:12:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:05,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:05,406 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 11:12:05,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:05,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636842554] [2022-12-13 11:12:05,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636842554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:05,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:05,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:12:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904149556] [2022-12-13 11:12:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:05,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:05,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:05,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:05,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 380 [2022-12-13 11:12:05,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 11:12:05,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:05,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 380 [2022-12-13 11:12:05,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:05,568 INFO L130 PetriNetUnfolder]: 111/287 cut-off events. [2022-12-13 11:12:05,568 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 11:12:05,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 287 events. 111/287 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1178 event pairs, 64 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 402. Up to 165 conditions per place. [2022-12-13 11:12:05,571 INFO L137 encePairwiseOnDemand]: 364/380 looper letters, 30 selfloop transitions, 7 changer transitions 6/47 dead transitions. [2022-12-13 11:12:05,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 214 flow [2022-12-13 11:12:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:05,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:12:05,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2022-12-13 11:12:05,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2022-12-13 11:12:05,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2022-12-13 11:12:05,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2022-12-13 11:12:05,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:05,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2022-12-13 11:12:05,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 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 11:12:05,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 11:12:05,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 0 states have call successors, (0), 0 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 11:12:05,595 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 90 flow. Second operand 3 states and 528 transitions. [2022-12-13 11:12:05,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 214 flow [2022-12-13 11:12:05,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 47 transitions, 214 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:12:05,599 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 122 flow [2022-12-13 11:12:05,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-12-13 11:12:05,603 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2022-12-13 11:12:05,603 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 122 flow [2022-12-13 11:12:05,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 11:12:05,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:05,603 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 11:12:05,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:12:05,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1410212789, now seen corresponding path program 1 times [2022-12-13 11:12:05,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:05,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418340287] [2022-12-13 11:12:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:05,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:12:05,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:12:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:12:05,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:12:05,683 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:12:05,684 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 11:12:05,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-12-13 11:12:05,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-12-13 11:12:05,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:12:05,687 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 11:12:05,689 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:12:05,689 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 11:12:05,707 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 11:12:05,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 206 transitions, 460 flow [2022-12-13 11:12:05,833 INFO L130 PetriNetUnfolder]: 149/1233 cut-off events. [2022-12-13 11:12:05,833 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 11:12:05,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 1233 events. 149/1233 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6598 event pairs, 2 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 711. Up to 32 conditions per place. [2022-12-13 11:12:05,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 206 transitions, 460 flow [2022-12-13 11:12:05,844 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 206 transitions, 460 flow [2022-12-13 11:12:05,844 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:12:05,844 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 206 transitions, 460 flow [2022-12-13 11:12:05,845 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 206 transitions, 460 flow [2022-12-13 11:12:05,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 206 transitions, 460 flow [2022-12-13 11:12:05,997 INFO L130 PetriNetUnfolder]: 149/1233 cut-off events. [2022-12-13 11:12:05,997 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 11:12:06,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 1233 events. 149/1233 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6598 event pairs, 2 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 711. Up to 32 conditions per place. [2022-12-13 11:12:06,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 5472 [2022-12-13 11:12:12,513 INFO L134 LiptonReduction]: Checked pairs total: 10239 [2022-12-13 11:12:12,513 INFO L136 LiptonReduction]: Total number of compositions: 203 [2022-12-13 11:12:12,515 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:12:12,516 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;@6057c755, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:12:12,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 11:12:12,519 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-13 11:12:12,519 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:12:12,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:12,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:12:12,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:12,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:12,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1053813378, now seen corresponding path program 1 times [2022-12-13 11:12:12,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:12,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924966301] [2022-12-13 11:12:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:12,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:12,603 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 11:12:12,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:12,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924966301] [2022-12-13 11:12:12,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924966301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:12,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:12,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:12:12,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457291721] [2022-12-13 11:12:12,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:12,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:12,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:12,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:12,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:12,641 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 409 [2022-12-13 11:12:12,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 11:12:12,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:12,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 409 [2022-12-13 11:12:12,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:13,169 INFO L130 PetriNetUnfolder]: 3823/6390 cut-off events. [2022-12-13 11:12:13,170 INFO L131 PetriNetUnfolder]: For 730/730 co-relation queries the response was YES. [2022-12-13 11:12:13,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13087 conditions, 6390 events. 3823/6390 cut-off events. For 730/730 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 38375 event pairs, 1695 based on Foata normal form. 0/5278 useless extension candidates. Maximal degree in co-relation 8993. Up to 3286 conditions per place. [2022-12-13 11:12:13,197 INFO L137 encePairwiseOnDemand]: 393/409 looper letters, 55 selfloop transitions, 12 changer transitions 2/75 dead transitions. [2022-12-13 11:12:13,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 360 flow [2022-12-13 11:12:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:12:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 583 transitions. [2022-12-13 11:12:13,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4751426242868786 [2022-12-13 11:12:13,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 583 transitions. [2022-12-13 11:12:13,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 583 transitions. [2022-12-13 11:12:13,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:13,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 583 transitions. [2022-12-13 11:12:13,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 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 11:12:13,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 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 11:12:13,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 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 11:12:13,214 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 138 flow. Second operand 3 states and 583 transitions. [2022-12-13 11:12:13,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 360 flow [2022-12-13 11:12:13,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:12:13,217 INFO L231 Difference]: Finished difference. Result has 50 places, 55 transitions, 236 flow [2022-12-13 11:12:13,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=50, PETRI_TRANSITIONS=55} [2022-12-13 11:12:13,217 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2022-12-13 11:12:13,218 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 55 transitions, 236 flow [2022-12-13 11:12:13,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 11:12:13,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:13,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:12:13,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:12:13,218 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1053813379, now seen corresponding path program 1 times [2022-12-13 11:12:13,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:13,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706687351] [2022-12-13 11:12:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:13,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:13,271 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 11:12:13,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:13,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706687351] [2022-12-13 11:12:13,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706687351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:13,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:13,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:12:13,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246990325] [2022-12-13 11:12:13,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:13,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:13,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:13,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:13,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:13,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 409 [2022-12-13 11:12:13,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 55 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 11:12:13,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:13,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 409 [2022-12-13 11:12:13,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:13,701 INFO L130 PetriNetUnfolder]: 2862/4873 cut-off events. [2022-12-13 11:12:13,701 INFO L131 PetriNetUnfolder]: For 2629/2629 co-relation queries the response was YES. [2022-12-13 11:12:13,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11348 conditions, 4873 events. 2862/4873 cut-off events. For 2629/2629 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 28053 event pairs, 2621 based on Foata normal form. 396/5112 useless extension candidates. Maximal degree in co-relation 3413. Up to 4525 conditions per place. [2022-12-13 11:12:13,721 INFO L137 encePairwiseOnDemand]: 404/409 looper letters, 40 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2022-12-13 11:12:13,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 278 flow [2022-12-13 11:12:13,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:13,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:12:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2022-12-13 11:12:13,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44661776691116545 [2022-12-13 11:12:13,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2022-12-13 11:12:13,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2022-12-13 11:12:13,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:13,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2022-12-13 11:12:13,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 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 11:12:13,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 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 11:12:13,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 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 11:12:13,728 INFO L175 Difference]: Start difference. First operand has 50 places, 55 transitions, 236 flow. Second operand 3 states and 548 transitions. [2022-12-13 11:12:13,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 278 flow [2022-12-13 11:12:13,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:12:13,732 INFO L231 Difference]: Finished difference. Result has 45 places, 47 transitions, 182 flow [2022-12-13 11:12:13,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2022-12-13 11:12:13,733 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2022-12-13 11:12:13,733 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 182 flow [2022-12-13 11:12:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 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 11:12:13,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:13,733 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 11:12:13,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:12:13,733 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash 700779889, now seen corresponding path program 1 times [2022-12-13 11:12:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:13,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110625206] [2022-12-13 11:12:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:13,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:13,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:13,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110625206] [2022-12-13 11:12:13,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110625206] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:12:13,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155514194] [2022-12-13 11:12:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:13,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:12:13,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:12:13,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:12:13,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:12:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:13,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:12:13,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:12:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:13,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:12:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:14,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155514194] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:12:14,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:12:14,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2022-12-13 11:12:14,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293510116] [2022-12-13 11:12:14,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:12:14,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 11:12:14,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:14,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 11:12:14,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:12:14,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 409 [2022-12-13 11:12:14,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 182 flow. Second operand has 9 states, 9 states have (on average 166.33333333333334) internal successors, (1497), 9 states have internal predecessors, (1497), 0 states have call successors, (0), 0 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 11:12:14,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:14,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 409 [2022-12-13 11:12:14,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:14,710 INFO L130 PetriNetUnfolder]: 2875/5047 cut-off events. [2022-12-13 11:12:14,710 INFO L131 PetriNetUnfolder]: For 1429/1429 co-relation queries the response was YES. [2022-12-13 11:12:14,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11273 conditions, 5047 events. 2875/5047 cut-off events. For 1429/1429 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 29437 event pairs, 1014 based on Foata normal form. 0/5043 useless extension candidates. Maximal degree in co-relation 11261. Up to 2085 conditions per place. [2022-12-13 11:12:14,724 INFO L137 encePairwiseOnDemand]: 397/409 looper letters, 28 selfloop transitions, 7 changer transitions 67/106 dead transitions. [2022-12-13 11:12:14,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 106 transitions, 582 flow [2022-12-13 11:12:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:12:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:12:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1256 transitions. [2022-12-13 11:12:14,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43870066363953897 [2022-12-13 11:12:14,731 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1256 transitions. [2022-12-13 11:12:14,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1256 transitions. [2022-12-13 11:12:14,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:14,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1256 transitions. [2022-12-13 11:12:14,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.42857142857142) internal successors, (1256), 7 states have internal predecessors, (1256), 0 states have call successors, (0), 0 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 11:12:14,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 409.0) internal successors, (3272), 8 states have internal predecessors, (3272), 0 states have call successors, (0), 0 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 11:12:14,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 409.0) internal successors, (3272), 8 states have internal predecessors, (3272), 0 states have call successors, (0), 0 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 11:12:14,739 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 182 flow. Second operand 7 states and 1256 transitions. [2022-12-13 11:12:14,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 106 transitions, 582 flow [2022-12-13 11:12:14,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 106 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:12:14,743 INFO L231 Difference]: Finished difference. Result has 46 places, 24 transitions, 103 flow [2022-12-13 11:12:14,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=24} [2022-12-13 11:12:14,744 INFO L288 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2022-12-13 11:12:14,744 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 103 flow [2022-12-13 11:12:14,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 166.33333333333334) internal successors, (1497), 9 states have internal predecessors, (1497), 0 states have call successors, (0), 0 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 11:12:14,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:14,745 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 11:12:14,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:12:14,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:12:14,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:14,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash -860360376, now seen corresponding path program 1 times [2022-12-13 11:12:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:14,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371376309] [2022-12-13 11:12:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:14,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:12:14,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:12:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:12:15,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:12:15,009 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:12:15,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 11:12:15,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-12-13 11:12:15,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-12-13 11:12:15,009 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-12-13 11:12:15,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-12-13 11:12:15,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-12-13 11:12:15,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-12-13 11:12:15,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-12-13 11:12:15,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-12-13 11:12:15,010 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-12-13 11:12:15,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:12:15,010 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 11:12:15,011 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:12:15,011 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 11:12:15,029 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-12-13 11:12:15,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 225 transitions, 528 flow [2022-12-13 11:12:15,548 INFO L130 PetriNetUnfolder]: 641/4254 cut-off events. [2022-12-13 11:12:15,548 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 11:12:15,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 4254 events. 641/4254 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 31967 event pairs, 32 based on Foata normal form. 0/3519 useless extension candidates. Maximal degree in co-relation 2450. Up to 192 conditions per place. [2022-12-13 11:12:15,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 225 transitions, 528 flow [2022-12-13 11:12:15,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 225 transitions, 528 flow [2022-12-13 11:12:15,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:12:15,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 225 transitions, 528 flow [2022-12-13 11:12:15,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 225 transitions, 528 flow [2022-12-13 11:12:15,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 225 transitions, 528 flow [2022-12-13 11:12:15,891 INFO L130 PetriNetUnfolder]: 641/4254 cut-off events. [2022-12-13 11:12:15,891 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 11:12:15,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 4254 events. 641/4254 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 31967 event pairs, 32 based on Foata normal form. 0/3519 useless extension candidates. Maximal degree in co-relation 2450. Up to 192 conditions per place. [2022-12-13 11:12:15,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 9096 [2022-12-13 11:12:24,292 INFO L134 LiptonReduction]: Checked pairs total: 19434 [2022-12-13 11:12:24,292 INFO L136 LiptonReduction]: Total number of compositions: 221 [2022-12-13 11:12:24,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:12:24,294 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;@6057c755, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:12:24,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 11:12:24,296 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-13 11:12:24,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:12:24,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:24,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:12:24,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:24,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1495185534, now seen corresponding path program 1 times [2022-12-13 11:12:24,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:24,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274147929] [2022-12-13 11:12:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:24,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:24,347 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 11:12:24,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:24,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274147929] [2022-12-13 11:12:24,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274147929] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:24,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:24,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:12:24,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700516395] [2022-12-13 11:12:24,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:24,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:12:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:24,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:12:24,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:12:24,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 446 [2022-12-13 11:12:24,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 11:12:24,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:24,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 446 [2022-12-13 11:12:24,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:30,934 INFO L130 PetriNetUnfolder]: 73344/106226 cut-off events. [2022-12-13 11:12:30,935 INFO L131 PetriNetUnfolder]: For 11541/11541 co-relation queries the response was YES. [2022-12-13 11:12:31,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218158 conditions, 106226 events. 73344/106226 cut-off events. For 11541/11541 co-relation queries the response was YES. Maximal size of possible extension queue 2273. Compared 738335 event pairs, 23084 based on Foata normal form. 0/92607 useless extension candidates. Maximal degree in co-relation 69496. Up to 50154 conditions per place. [2022-12-13 11:12:31,368 INFO L137 encePairwiseOnDemand]: 428/446 looper letters, 78 selfloop transitions, 14 changer transitions 2/100 dead transitions. [2022-12-13 11:12:31,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 100 transitions, 502 flow [2022-12-13 11:12:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:12:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:12:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 798 transitions. [2022-12-13 11:12:31,370 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44730941704035876 [2022-12-13 11:12:31,371 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 798 transitions. [2022-12-13 11:12:31,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 798 transitions. [2022-12-13 11:12:31,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:31,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 798 transitions. [2022-12-13 11:12:31,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 0 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 11:12:31,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 0 states have call successors, (0), 0 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 11:12:31,375 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 446.0) internal successors, (2230), 5 states have internal predecessors, (2230), 0 states have call successors, (0), 0 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 11:12:31,375 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 186 flow. Second operand 4 states and 798 transitions. [2022-12-13 11:12:31,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 100 transitions, 502 flow [2022-12-13 11:12:31,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 100 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:12:31,390 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 300 flow [2022-12-13 11:12:31,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2022-12-13 11:12:31,390 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2022-12-13 11:12:31,390 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 300 flow [2022-12-13 11:12:31,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 0 states have call successors, (0), 0 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 11:12:31,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:31,391 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:12:31,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:12:31,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:31,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1495185533, now seen corresponding path program 1 times [2022-12-13 11:12:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:31,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296516855] [2022-12-13 11:12:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:31,439 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 11:12:31,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:31,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296516855] [2022-12-13 11:12:31,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296516855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:31,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:31,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:12:31,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45163725] [2022-12-13 11:12:31,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:31,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:31,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:31,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:31,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:31,471 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 446 [2022-12-13 11:12:31,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 11:12:31,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:31,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 446 [2022-12-13 11:12:31,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:38,930 INFO L130 PetriNetUnfolder]: 58987/85844 cut-off events. [2022-12-13 11:12:38,931 INFO L131 PetriNetUnfolder]: For 38838/38838 co-relation queries the response was YES. [2022-12-13 11:12:39,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198154 conditions, 85844 events. 58987/85844 cut-off events. For 38838/38838 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 587295 event pairs, 28649 based on Foata normal form. 2681/86052 useless extension candidates. Maximal degree in co-relation 63765. Up to 53020 conditions per place. [2022-12-13 11:12:39,349 INFO L137 encePairwiseOnDemand]: 434/446 looper letters, 71 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2022-12-13 11:12:39,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 524 flow [2022-12-13 11:12:39,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:12:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2022-12-13 11:12:39,351 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4678624813153961 [2022-12-13 11:12:39,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2022-12-13 11:12:39,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2022-12-13 11:12:39,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:39,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2022-12-13 11:12:39,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 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 11:12:39,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 11:12:39,356 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 11:12:39,356 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 300 flow. Second operand 3 states and 626 transitions. [2022-12-13 11:12:39,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 524 flow [2022-12-13 11:12:39,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 524 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:12:39,679 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 300 flow [2022-12-13 11:12:39,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2022-12-13 11:12:39,679 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2022-12-13 11:12:39,679 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 300 flow [2022-12-13 11:12:39,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 11:12:39,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:39,680 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 11:12:39,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:12:39,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:39,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash -994904036, now seen corresponding path program 1 times [2022-12-13 11:12:39,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:39,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828338367] [2022-12-13 11:12:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:39,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:39,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828338367] [2022-12-13 11:12:39,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828338367] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:12:39,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913949290] [2022-12-13 11:12:39,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:39,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:12:39,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:12:39,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:12:39,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:12:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:39,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:12:39,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:12:39,953 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-12-13 11:12:39,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 33 [2022-12-13 11:12:39,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-13 11:12:39,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:12:39,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2022-12-13 11:12:40,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:12:40,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-12-13 11:12:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:40,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:12:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913949290] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:12:40,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:12:40,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 6 [2022-12-13 11:12:40,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255791117] [2022-12-13 11:12:40,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:12:40,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:12:40,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:40,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:12:40,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:12:40,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 446 [2022-12-13 11:12:40,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 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 11:12:40,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:40,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 446 [2022-12-13 11:12:40,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:47,282 INFO L130 PetriNetUnfolder]: 66717/98398 cut-off events. [2022-12-13 11:12:47,282 INFO L131 PetriNetUnfolder]: For 53123/53123 co-relation queries the response was YES. [2022-12-13 11:12:47,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234225 conditions, 98398 events. 66717/98398 cut-off events. For 53123/53123 co-relation queries the response was YES. Maximal size of possible extension queue 1837. Compared 689406 event pairs, 17345 based on Foata normal form. 0/98366 useless extension candidates. Maximal degree in co-relation 151669. Up to 36016 conditions per place. [2022-12-13 11:12:47,730 INFO L137 encePairwiseOnDemand]: 428/446 looper letters, 139 selfloop transitions, 35 changer transitions 4/184 dead transitions. [2022-12-13 11:12:47,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 184 transitions, 1146 flow [2022-12-13 11:12:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:12:47,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:12:47,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1413 transitions. [2022-12-13 11:12:47,734 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45259449071108265 [2022-12-13 11:12:47,734 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1413 transitions. [2022-12-13 11:12:47,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1413 transitions. [2022-12-13 11:12:47,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:47,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1413 transitions. [2022-12-13 11:12:47,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.85714285714286) internal successors, (1413), 7 states have internal predecessors, (1413), 0 states have call successors, (0), 0 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 11:12:47,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 446.0) internal successors, (3568), 8 states have internal predecessors, (3568), 0 states have call successors, (0), 0 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 11:12:47,742 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 446.0) internal successors, (3568), 8 states have internal predecessors, (3568), 0 states have call successors, (0), 0 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 11:12:47,742 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 300 flow. Second operand 7 states and 1413 transitions. [2022-12-13 11:12:47,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 184 transitions, 1146 flow [2022-12-13 11:12:47,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 184 transitions, 1131 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:12:47,960 INFO L231 Difference]: Finished difference. Result has 69 places, 84 transitions, 563 flow [2022-12-13 11:12:47,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=563, PETRI_PLACES=69, PETRI_TRANSITIONS=84} [2022-12-13 11:12:47,961 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2022-12-13 11:12:47,961 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 84 transitions, 563 flow [2022-12-13 11:12:47,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 177.0) internal successors, (1416), 8 states have internal predecessors, (1416), 0 states have call successors, (0), 0 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 11:12:47,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:47,962 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 11:12:47,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:12:48,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eedf093e-6523-46f3-8e5a-b2364faeb0b1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 11:12:48,163 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:48,164 INFO L85 PathProgramCache]: Analyzing trace with hash -994904037, now seen corresponding path program 1 times [2022-12-13 11:12:48,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:48,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520523752] [2022-12-13 11:12:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:48,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:12:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:12:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:12:48,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520523752] [2022-12-13 11:12:48,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520523752] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:12:48,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:12:48,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:12:48,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623556903] [2022-12-13 11:12:48,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:12:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:12:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:12:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:12:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:12:48,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 446 [2022-12-13 11:12:48,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 84 transitions, 563 flow. Second operand has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 11:12:48,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:12:48,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 446 [2022-12-13 11:12:48,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:12:54,796 INFO L130 PetriNetUnfolder]: 60241/89404 cut-off events. [2022-12-13 11:12:54,796 INFO L131 PetriNetUnfolder]: For 103205/103205 co-relation queries the response was YES. [2022-12-13 11:12:54,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221982 conditions, 89404 events. 60241/89404 cut-off events. For 103205/103205 co-relation queries the response was YES. Maximal size of possible extension queue 1718. Compared 643352 event pairs, 56359 based on Foata normal form. 3454/92858 useless extension candidates. Maximal degree in co-relation 53933. Up to 83393 conditions per place. [2022-12-13 11:12:55,126 INFO L137 encePairwiseOnDemand]: 441/446 looper letters, 60 selfloop transitions, 1 changer transitions 5/72 dead transitions. [2022-12-13 11:12:55,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 585 flow [2022-12-13 11:12:55,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:12:55,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:12:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 588 transitions. [2022-12-13 11:12:55,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43946188340807174 [2022-12-13 11:12:55,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 588 transitions. [2022-12-13 11:12:55,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 588 transitions. [2022-12-13 11:12:55,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:12:55,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 588 transitions. [2022-12-13 11:12:55,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 0 states have call successors, (0), 0 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 11:12:55,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 11:12:55,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 446.0) internal successors, (1784), 4 states have internal predecessors, (1784), 0 states have call successors, (0), 0 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 11:12:55,130 INFO L175 Difference]: Start difference. First operand has 69 places, 84 transitions, 563 flow. Second operand 3 states and 588 transitions. [2022-12-13 11:12:55,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 585 flow [2022-12-13 11:12:55,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 542 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-13 11:12:55,203 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 377 flow [2022-12-13 11:12:55,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=446, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2022-12-13 11:12:55,204 INFO L288 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2022-12-13 11:12:55,204 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 377 flow [2022-12-13 11:12:55,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 11:12:55,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:12:55,204 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-12-13 11:12:55,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:12:55,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:12:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:12:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash 522569035, now seen corresponding path program 1 times [2022-12-13 11:12:55,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:12:55,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561615040] [2022-12-13 11:12:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:12:55,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:12:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:12:55,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 11:12:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 11:12:55,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 11:12:55,247 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-12-13 11:12:55,247 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-12-13 11:12:55,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:12:55,247 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 11:12:55,248 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 11:12:55,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-12-13 11:12:55,269 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-12-13 11:12:55,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 244 transitions, 600 flow [2022-12-13 11:12:57,010 INFO L130 PetriNetUnfolder]: 2917/16033 cut-off events. [2022-12-13 11:12:57,010 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-12-13 11:12:57,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18198 conditions, 16033 events. 2917/16033 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 159248 event pairs, 313 based on Foata normal form. 0/13323 useless extension candidates. Maximal degree in co-relation 9146. Up to 1024 conditions per place. [2022-12-13 11:12:57,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 244 transitions, 600 flow [2022-12-13 11:12:57,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 244 transitions, 600 flow [2022-12-13 11:12:57,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:12:57,128 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 244 transitions, 600 flow [2022-12-13 11:12:57,128 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 244 transitions, 600 flow [2022-12-13 11:12:57,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 244 transitions, 600 flow [2022-12-13 11:12:59,121 INFO L130 PetriNetUnfolder]: 2917/16033 cut-off events. [2022-12-13 11:12:59,121 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-12-13 11:12:59,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18198 conditions, 16033 events. 2917/16033 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 159248 event pairs, 313 based on Foata normal form. 0/13323 useless extension candidates. Maximal degree in co-relation 9146. Up to 1024 conditions per place. [2022-12-13 11:12:59,388 INFO L119 LiptonReduction]: Number of co-enabled transitions 13312 [2022-12-13 11:13:07,199 INFO L134 LiptonReduction]: Checked pairs total: 29726 [2022-12-13 11:13:07,199 INFO L136 LiptonReduction]: Total number of compositions: 235 [2022-12-13 11:13:07,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:13:07,201 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;@6057c755, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:13:07,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-13 11:13:07,203 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-13 11:13:07,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:13:07,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:13:07,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:13:07,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:13:07,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:13:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1968500570, now seen corresponding path program 1 times [2022-12-13 11:13:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:13:07,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939857123] [2022-12-13 11:13:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:13:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:13:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:13:07,254 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 11:13:07,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:13:07,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939857123] [2022-12-13 11:13:07,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939857123] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:13:07,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:13:07,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:13:07,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806790862] [2022-12-13 11:13:07,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:13:07,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:13:07,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:13:07,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:13:07,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:13:07,306 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 479 [2022-12-13 11:13:07,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 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 11:13:07,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:13:07,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 479 [2022-12-13 11:13:07,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:14:57,159 INFO L130 PetriNetUnfolder]: 1201779/1597373 cut-off events. [2022-12-13 11:14:57,159 INFO L131 PetriNetUnfolder]: For 209511/209511 co-relation queries the response was YES. [2022-12-13 11:15:00,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290904 conditions, 1597373 events. 1201779/1597373 cut-off events. For 209511/209511 co-relation queries the response was YES. Maximal size of possible extension queue 23669. Compared 11994434 event pairs, 448109 based on Foata normal form. 0/1433187 useless extension candidates. Maximal degree in co-relation 934694. Up to 803188 conditions per place. [2022-12-13 11:15:04,054 INFO L137 encePairwiseOnDemand]: 461/479 looper letters, 97 selfloop transitions, 14 changer transitions 2/119 dead transitions. [2022-12-13 11:15:04,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 119 transitions, 624 flow [2022-12-13 11:15:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:15:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:15:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 861 transitions. [2022-12-13 11:15:04,057 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44937369519832987 [2022-12-13 11:15:04,057 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 861 transitions. [2022-12-13 11:15:04,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 861 transitions. [2022-12-13 11:15:04,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:15:04,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 861 transitions. [2022-12-13 11:15:04,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 215.25) internal successors, (861), 4 states have internal predecessors, (861), 0 states have call successors, (0), 0 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 11:15:04,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 479.0) internal successors, (2395), 5 states have internal predecessors, (2395), 0 states have call successors, (0), 0 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 11:15:04,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 479.0) internal successors, (2395), 5 states have internal predecessors, (2395), 0 states have call successors, (0), 0 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 11:15:04,061 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 238 flow. Second operand 4 states and 861 transitions. [2022-12-13 11:15:04,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 119 transitions, 624 flow [2022-12-13 11:15:04,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 119 transitions, 624 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:15:04,848 INFO L231 Difference]: Finished difference. Result has 70 places, 75 transitions, 352 flow [2022-12-13 11:15:04,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=479, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=352, PETRI_PLACES=70, PETRI_TRANSITIONS=75} [2022-12-13 11:15:04,848 INFO L288 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2022-12-13 11:15:04,848 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 75 transitions, 352 flow [2022-12-13 11:15:04,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 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 11:15:04,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:15:04,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:15:04,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:15:04,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-13 11:15:04,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:15:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1968500571, now seen corresponding path program 1 times [2022-12-13 11:15:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:15:04,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958445910] [2022-12-13 11:15:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:15:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:15:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:15:04,884 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 11:15:04,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:15:04,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958445910] [2022-12-13 11:15:04,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958445910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:15:04,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:15:04,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:15:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463517792] [2022-12-13 11:15:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:15:04,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:15:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:15:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:15:04,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:15:04,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 479 [2022-12-13 11:15:04,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 75 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 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 11:15:04,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:15:04,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 479 [2022-12-13 11:15:04,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand