./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca --- 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-38b53e6 [2022-11-25 17:12:36,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:12:36,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:12:36,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:12:36,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:12:36,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:12:36,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:12:36,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:12:36,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:12:36,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:12:36,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:12:36,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:12:36,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:12:36,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:12:36,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:12:36,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:12:36,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:12:36,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:12:36,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:12:36,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:12:36,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:12:36,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:12:36,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:12:36,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:12:36,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:12:36,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:12:36,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:12:36,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:12:36,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:12:36,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:12:36,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:12:36,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:12:36,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:12:36,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:12:36,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:12:36,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:12:36,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:12:36,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:12:36,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:12:36,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:12:36,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:12:36,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:12:36,969 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:12:36,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:12:36,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:12:36,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:12:36,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:12:36,971 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:12:36,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:12:36,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:12:36,972 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:12:36,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:12:36,973 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:12:36,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:12:36,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:12:36,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:12:36,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:12:36,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:12:36,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:12:36,974 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:12:36,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:12:36,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:12:36,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:12:36,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:12:36,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:12:36,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:12:36,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:12:36,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:12:36,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:12:36,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:12:36,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:12:36,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:12:36,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:12:36,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:12:36,978 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:12:36,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:12:36,978 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_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ea4ca0f63ee44295abb2f56a10a45cd5c3c9aada41df664ec74c618092ddbca [2022-11-25 17:12:37,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:12:37,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:12:37,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:12:37,403 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:12:37,403 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:12:37,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-25 17:12:40,526 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:12:40,825 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:12:40,827 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2022-11-25 17:12:40,837 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/data/66db7771b/d9707a373b8d47d4a76ecab7b2d74f15/FLAG846ac9087 [2022-11-25 17:12:40,857 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/data/66db7771b/d9707a373b8d47d4a76ecab7b2d74f15 [2022-11-25 17:12:40,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:12:40,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:12:40,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:12:40,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:12:40,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:12:40,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:12:40" (1/1) ... [2022-11-25 17:12:40,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4abac876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:40, skipping insertion in model container [2022-11-25 17:12:40,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:12:40" (1/1) ... [2022-11-25 17:12:40,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:12:40,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:12:41,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,164 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,216 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_9b8a3e8e-59bb-4961-ba40-3f2864993947/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-25 17:12:41,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:12:41,251 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:12:41,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,286 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,287 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,307 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,308 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:12:41,309 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:12:41,315 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_9b8a3e8e-59bb-4961-ba40-3f2864993947/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2022-11-25 17:12:41,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:12:41,339 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:12:41,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41 WrapperNode [2022-11-25 17:12:41,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:12:41,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:12:41,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:12:41,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:12:41,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,415 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 137 [2022-11-25 17:12:41,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:12:41,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:12:41,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:12:41,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:12:41,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:12:41,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:12:41,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:12:41,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:12:41,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (1/1) ... [2022-11-25 17:12:41,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:12:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:41,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:12:41,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:12:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:12:41,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:12:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:12:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:12:41,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:12:41,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:12:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:12:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:12:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:12:41,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:12:41,568 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:12:41,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:12:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:12:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:12:41,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:12:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:12:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:12:41,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:12:41,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:12:41,572 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:12:41,687 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:12:41,689 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:12:42,176 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:12:42,266 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:12:42,266 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:12:42,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:12:42 BoogieIcfgContainer [2022-11-25 17:12:42,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:12:42,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:12:42,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:12:42,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:12:42,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:12:40" (1/3) ... [2022-11-25 17:12:42,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7dda7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:12:42, skipping insertion in model container [2022-11-25 17:12:42,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:12:41" (2/3) ... [2022-11-25 17:12:42,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7dda7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:12:42, skipping insertion in model container [2022-11-25 17:12:42,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:12:42" (3/3) ... [2022-11-25 17:12:42,279 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2022-11-25 17:12:42,288 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:12:42,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:12:42,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:12:42,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:12:42,389 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-25 17:12:42,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 172 transitions, 376 flow [2022-11-25 17:12:42,506 INFO L130 PetriNetUnfolder]: 12/168 cut-off events. [2022-11-25 17:12:42,506 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:12:42,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 168 events. 12/168 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-11-25 17:12:42,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 172 transitions, 376 flow [2022-11-25 17:12:42,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 155 transitions, 334 flow [2022-11-25 17:12:42,527 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:12:42,546 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 155 transitions, 334 flow [2022-11-25 17:12:42,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 155 transitions, 334 flow [2022-11-25 17:12:42,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 155 transitions, 334 flow [2022-11-25 17:12:42,641 INFO L130 PetriNetUnfolder]: 12/155 cut-off events. [2022-11-25 17:12:42,642 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:12:42,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 155 events. 12/155 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 134. Up to 2 conditions per place. [2022-11-25 17:12:42,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 2280 [2022-11-25 17:12:52,065 INFO L134 LiptonReduction]: Checked pairs total: 3670 [2022-11-25 17:12:52,065 INFO L136 LiptonReduction]: Total number of compositions: 147 [2022-11-25 17:12:52,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:12:52,092 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;@6a7b753, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:12:52,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-25 17:12:52,103 INFO L130 PetriNetUnfolder]: 4/30 cut-off events. [2022-11-25 17:12:52,104 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-25 17:12:52,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:52,105 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:52,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:12:52,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash 145427347, now seen corresponding path program 1 times [2022-11-25 17:12:52,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:52,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493893944] [2022-11-25 17:12:52,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:52,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:52,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:52,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493893944] [2022-11-25 17:12:52,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493893944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:52,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:52,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:12:52,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919757933] [2022-11-25 17:12:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:12:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:52,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:12:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:12:52,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 319 [2022-11-25 17:12:52,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:52,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:52,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 319 [2022-11-25 17:12:52,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:53,242 INFO L130 PetriNetUnfolder]: 1426/1904 cut-off events. [2022-11-25 17:12:53,243 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-25 17:12:53,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1904 events. 1426/1904 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7213 event pairs, 769 based on Foata normal form. 0/1432 useless extension candidates. Maximal degree in co-relation 3512. Up to 1560 conditions per place. [2022-11-25 17:12:53,259 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 42 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2022-11-25 17:12:53,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 215 flow [2022-11-25 17:12:53,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:12:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:12:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2022-11-25 17:12:53,276 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49059561128526646 [2022-11-25 17:12:53,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2022-11-25 17:12:53,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2022-11-25 17:12:53,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:53,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2022-11-25 17:12:53,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 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) [2022-11-25 17:12:53,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,296 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,298 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 4 states and 626 transitions. [2022-11-25 17:12:53,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 215 flow [2022-11-25 17:12:53,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 193 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-25 17:12:53,307 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 84 flow [2022-11-25 17:12:53,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2022-11-25 17:12:53,314 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2022-11-25 17:12:53,314 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 84 flow [2022-11-25 17:12:53,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:53,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:53,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:12:53,316 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:12:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:53,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1507037435, now seen corresponding path program 1 times [2022-11-25 17:12:53,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:53,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971422325] [2022-11-25 17:12:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:53,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:53,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971422325] [2022-11-25 17:12:53,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971422325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:53,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:53,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:12:53,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728852409] [2022-11-25 17:12:53,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:53,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:12:53,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:53,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:12:53,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:12:53,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 319 [2022-11-25 17:12:53,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:53,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 319 [2022-11-25 17:12:53,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:53,907 INFO L130 PetriNetUnfolder]: 1718/2336 cut-off events. [2022-11-25 17:12:53,907 INFO L131 PetriNetUnfolder]: For 539/539 co-relation queries the response was YES. [2022-11-25 17:12:53,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 2336 events. 1718/2336 cut-off events. For 539/539 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8132 event pairs, 977 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 1800. Up to 1790 conditions per place. [2022-11-25 17:12:53,922 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2022-11-25 17:12:53,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 233 flow [2022-11-25 17:12:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:12:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:12:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 629 transitions. [2022-11-25 17:12:53,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49294670846394983 [2022-11-25 17:12:53,926 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 629 transitions. [2022-11-25 17:12:53,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 629 transitions. [2022-11-25 17:12:53,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:53,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 629 transitions. [2022-11-25 17:12:53,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,932 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,933 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 84 flow. Second operand 4 states and 629 transitions. [2022-11-25 17:12:53,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 233 flow [2022-11-25 17:12:53,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 223 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:12:53,936 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 92 flow [2022-11-25 17:12:53,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2022-11-25 17:12:53,937 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2022-11-25 17:12:53,937 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 92 flow [2022-11-25 17:12:53,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:53,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:53,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:53,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:12:53,939 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:12:53,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1844912838, now seen corresponding path program 1 times [2022-11-25 17:12:53,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:53,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30845511] [2022-11-25 17:12:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:53,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:54,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:54,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30845511] [2022-11-25 17:12:54,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30845511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:54,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:54,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:12:54,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308558222] [2022-11-25 17:12:54,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:54,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:12:54,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:12:54,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:12:54,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 319 [2022-11-25 17:12:54,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:54,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:54,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 319 [2022-11-25 17:12:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:54,501 INFO L130 PetriNetUnfolder]: 1632/2230 cut-off events. [2022-11-25 17:12:54,501 INFO L131 PetriNetUnfolder]: For 544/696 co-relation queries the response was YES. [2022-11-25 17:12:54,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5574 conditions, 2230 events. 1632/2230 cut-off events. For 544/696 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8430 event pairs, 977 based on Foata normal form. 152/1983 useless extension candidates. Maximal degree in co-relation 1672. Up to 1790 conditions per place. [2022-11-25 17:12:54,516 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 46 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2022-11-25 17:12:54,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 240 flow [2022-11-25 17:12:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:12:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:12:54,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2022-11-25 17:12:54,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49059561128526646 [2022-11-25 17:12:54,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2022-11-25 17:12:54,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2022-11-25 17:12:54,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:54,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2022-11-25 17:12:54,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 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) [2022-11-25 17:12:54,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:54,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:54,526 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 92 flow. Second operand 4 states and 626 transitions. [2022-11-25 17:12:54,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 240 flow [2022-11-25 17:12:54,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 231 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:12:54,535 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 100 flow [2022-11-25 17:12:54,535 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2022-11-25 17:12:54,537 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2022-11-25 17:12:54,538 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 100 flow [2022-11-25 17:12:54,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:54,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:54,540 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:12:54,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:12:54,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 318708383, now seen corresponding path program 1 times [2022-11-25 17:12:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013844586] [2022-11-25 17:12:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:54,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:12:54,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:54,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013844586] [2022-11-25 17:12:54,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013844586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:54,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:54,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:12:54,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117010383] [2022-11-25 17:12:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:54,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:12:54,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:12:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:12:54,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 319 [2022-11-25 17:12:54,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:54,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:54,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 319 [2022-11-25 17:12:54,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:55,269 INFO L130 PetriNetUnfolder]: 1632/2231 cut-off events. [2022-11-25 17:12:55,270 INFO L131 PetriNetUnfolder]: For 879/1039 co-relation queries the response was YES. [2022-11-25 17:12:55,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 2231 events. 1632/2231 cut-off events. For 879/1039 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8183 event pairs, 1243 based on Foata normal form. 160/1996 useless extension candidates. Maximal degree in co-relation 1879. Up to 2223 conditions per place. [2022-11-25 17:12:55,284 INFO L137 encePairwiseOnDemand]: 316/319 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2022-11-25 17:12:55,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 170 flow [2022-11-25 17:12:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:12:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:12:55,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2022-11-25 17:12:55,286 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2022-11-25 17:12:55,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2022-11-25 17:12:55,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2022-11-25 17:12:55,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:12:55,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2022-11-25 17:12:55,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:55,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:55,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:55,292 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 100 flow. Second operand 3 states and 464 transitions. [2022-11-25 17:12:55,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 170 flow [2022-11-25 17:12:55,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:12:55,297 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 106 flow [2022-11-25 17:12:55,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2022-11-25 17:12:55,300 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-11-25 17:12:55,300 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 106 flow [2022-11-25 17:12:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:55,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:12:55,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:12:55,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:12:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1080092753, now seen corresponding path program 1 times [2022-11-25 17:12:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305846635] [2022-11-25 17:12:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:12:56,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:56,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305846635] [2022-11-25 17:12:56,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305846635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:56,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200000647] [2022-11-25 17:12:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:56,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:12:56,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:12:56,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:12:56,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:12:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:56,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 17:12:56,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:12:56,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:12:56,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 17:12:56,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:12:56,723 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 28 treesize of output 22 [2022-11-25 17:12:56,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 22 [2022-11-25 17:12:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:12:56,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:12:56,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 50 treesize of output 26 [2022-11-25 17:12:57,411 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) (and (forall ((v_ArrVal_181 (Array Int Int)) (|thread3Thread1of1ForFork3_~i~2#1| Int)) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_181) c_~A~0.base))) (let ((.cse2 (select .cse0 c_~A~0.offset))) (or (not (< c_~min~0 (select .cse0 .cse1))) (< c_~min~0 (+ .cse2 2)) (<= (+ (select .cse0 (+ c_~A~0.offset (* |thread3Thread1of1ForFork3_~i~2#1| 4))) 2147483648) 0) (< 2147483646 .cse2))))) (forall ((v_ArrVal_181 (Array Int Int)) (|thread3Thread1of1ForFork3_~i~2#1| Int)) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_181) c_~A~0.base))) (let ((.cse4 (select .cse5 c_~A~0.offset)) (.cse3 (select .cse5 .cse1))) (or (< .cse3 (+ .cse4 2)) (<= (+ (select .cse5 (+ c_~A~0.offset (* |thread3Thread1of1ForFork3_~i~2#1| 4))) 2147483648) 0) (< 2147483646 .cse4) (< c_~min~0 .cse3))))))) is different from false [2022-11-25 17:12:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:12:57,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200000647] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:12:57,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:12:57,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 10] total 23 [2022-11-25 17:12:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943847615] [2022-11-25 17:12:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:57,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:12:57,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:12:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=411, Unknown=1, NotChecked=42, Total=552 [2022-11-25 17:12:57,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 319 [2022-11-25 17:12:57,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 106 flow. Second operand has 8 states, 8 states have (on average 126.75) internal successors, (1014), 8 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:12:57,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:12:57,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 319 [2022-11-25 17:12:57,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:12:59,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:13:02,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:13:05,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-11-25 17:13:07,443 INFO L130 PetriNetUnfolder]: 7965/11003 cut-off events. [2022-11-25 17:13:07,445 INFO L131 PetriNetUnfolder]: For 2594/3242 co-relation queries the response was YES. [2022-11-25 17:13:07,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28155 conditions, 11003 events. 7965/11003 cut-off events. For 2594/3242 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 54489 event pairs, 788 based on Foata normal form. 655/9300 useless extension candidates. Maximal degree in co-relation 28141. Up to 2791 conditions per place. [2022-11-25 17:13:07,539 INFO L137 encePairwiseOnDemand]: 300/319 looper letters, 148 selfloop transitions, 46 changer transitions 141/336 dead transitions. [2022-11-25 17:13:07,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 336 transitions, 1661 flow [2022-11-25 17:13:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 17:13:07,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-25 17:13:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2396 transitions. [2022-11-25 17:13:07,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4418218698137562 [2022-11-25 17:13:07,548 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2396 transitions. [2022-11-25 17:13:07,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2396 transitions. [2022-11-25 17:13:07,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:07,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2396 transitions. [2022-11-25 17:13:07,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 140.94117647058823) internal successors, (2396), 17 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:07,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 319.0) internal successors, (5742), 18 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:07,571 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 319.0) internal successors, (5742), 18 states have internal predecessors, (5742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:07,572 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 106 flow. Second operand 17 states and 2396 transitions. [2022-11-25 17:13:07,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 336 transitions, 1661 flow [2022-11-25 17:13:07,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 336 transitions, 1657 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:13:07,644 INFO L231 Difference]: Finished difference. Result has 68 places, 84 transitions, 451 flow [2022-11-25 17:13:07,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=451, PETRI_PLACES=68, PETRI_TRANSITIONS=84} [2022-11-25 17:13:07,647 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2022-11-25 17:13:07,647 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 84 transitions, 451 flow [2022-11-25 17:13:07,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.75) internal successors, (1014), 8 states have internal predecessors, (1014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:07,648 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:07,648 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:07,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:13:07,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:13:07,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:13:07,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1465491027, now seen corresponding path program 2 times [2022-11-25 17:13:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:07,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768469051] [2022-11-25 17:13:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:07,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:13:08,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:08,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768469051] [2022-11-25 17:13:08,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768469051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:13:08,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792114907] [2022-11-25 17:13:08,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:13:08,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:13:08,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:13:08,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:13:08,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:13:08,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:13:08,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:13:08,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 17:13:08,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:13:09,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:13:09,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-25 17:13:09,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2022-11-25 17:13:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:13:09,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:13:09,594 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (forall ((v_ArrVal_246 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_246) c_~A~0.base) c_~A~0.offset))) (or (<= 2147483647 .cse0) (< .cse0 .cse1) (<= c_~min~0 (+ .cse0 1))))) (or (<= 2147483647 .cse1) (<= c_~min~0 (+ .cse1 1)) (forall ((v_ArrVal_246 (Array Int Int))) (not (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_246) c_~A~0.base) c_~A~0.offset) .cse1)))))) is different from false [2022-11-25 17:13:17,950 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:13:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-11-25 17:13:17,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792114907] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:13:17,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:13:17,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 8] total 21 [2022-11-25 17:13:17,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307791006] [2022-11-25 17:13:17,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:13:17,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 17:13:17,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 17:13:17,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=316, Unknown=3, NotChecked=38, Total=462 [2022-11-25 17:13:18,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 319 [2022-11-25 17:13:18,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 84 transitions, 451 flow. Second operand has 22 states, 22 states have (on average 118.72727272727273) internal successors, (2612), 22 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:18,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:18,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 319 [2022-11-25 17:13:18,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:13:25,128 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 66 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:13:43,636 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 56 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 17:13:53,725 INFO L130 PetriNetUnfolder]: 47744/65782 cut-off events. [2022-11-25 17:13:53,726 INFO L131 PetriNetUnfolder]: For 159900/167675 co-relation queries the response was YES. [2022-11-25 17:13:54,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275748 conditions, 65782 events. 47744/65782 cut-off events. For 159900/167675 co-relation queries the response was YES. Maximal size of possible extension queue 2509. Compared 415677 event pairs, 2760 based on Foata normal form. 7808/68848 useless extension candidates. Maximal degree in co-relation 275717. Up to 35699 conditions per place. [2022-11-25 17:13:54,282 INFO L137 encePairwiseOnDemand]: 299/319 looper letters, 454 selfloop transitions, 353 changer transitions 588/1396 dead transitions. [2022-11-25 17:13:54,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 1396 transitions, 10552 flow [2022-11-25 17:13:54,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-25 17:13:54,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-25 17:13:54,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 6524 transitions. [2022-11-25 17:13:54,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4090282131661442 [2022-11-25 17:13:54,305 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 6524 transitions. [2022-11-25 17:13:54,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 6524 transitions. [2022-11-25 17:13:54,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:13:54,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 6524 transitions. [2022-11-25 17:13:54,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 130.48) internal successors, (6524), 50 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:54,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 319.0) internal successors, (16269), 51 states have internal predecessors, (16269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:54,361 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 319.0) internal successors, (16269), 51 states have internal predecessors, (16269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:54,362 INFO L175 Difference]: Start difference. First operand has 68 places, 84 transitions, 451 flow. Second operand 50 states and 6524 transitions. [2022-11-25 17:13:54,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 1396 transitions, 10552 flow [2022-11-25 17:13:57,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 1396 transitions, 9702 flow, removed 425 selfloop flow, removed 8 redundant places. [2022-11-25 17:13:57,628 INFO L231 Difference]: Finished difference. Result has 139 places, 455 transitions, 4089 flow [2022-11-25 17:13:57,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4089, PETRI_PLACES=139, PETRI_TRANSITIONS=455} [2022-11-25 17:13:57,629 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2022-11-25 17:13:57,630 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 455 transitions, 4089 flow [2022-11-25 17:13:57,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 118.72727272727273) internal successors, (2612), 22 states have internal predecessors, (2612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:57,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:13:57,631 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:57,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:13:57,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:13:57,839 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:13:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:57,840 INFO L85 PathProgramCache]: Analyzing trace with hash 63675865, now seen corresponding path program 3 times [2022-11-25 17:13:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:57,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018253937] [2022-11-25 17:13:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:13:58,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018253937] [2022-11-25 17:13:58,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018253937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:58,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:58,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:13:58,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873726207] [2022-11-25 17:13:58,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:58,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:13:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:58,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:13:58,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:13:58,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 319 [2022-11-25 17:13:58,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 455 transitions, 4089 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:13:58,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:13:58,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 319 [2022-11-25 17:13:58,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:14:09,678 INFO L130 PetriNetUnfolder]: 39364/55202 cut-off events. [2022-11-25 17:14:09,678 INFO L131 PetriNetUnfolder]: For 1039709/1046283 co-relation queries the response was YES. [2022-11-25 17:14:10,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420387 conditions, 55202 events. 39364/55202 cut-off events. For 1039709/1046283 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 356550 event pairs, 3623 based on Foata normal form. 6575/61367 useless extension candidates. Maximal degree in co-relation 420324. Up to 32957 conditions per place. [2022-11-25 17:14:10,362 INFO L137 encePairwiseOnDemand]: 315/319 looper letters, 382 selfloop transitions, 10 changer transitions 803/1196 dead transitions. [2022-11-25 17:14:10,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1196 transitions, 13397 flow [2022-11-25 17:14:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:14:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:14:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 802 transitions. [2022-11-25 17:14:10,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5028213166144201 [2022-11-25 17:14:10,366 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 802 transitions. [2022-11-25 17:14:10,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 802 transitions. [2022-11-25 17:14:10,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:14:10,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 802 transitions. [2022-11-25 17:14:10,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.4) internal successors, (802), 5 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:10,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:10,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:10,375 INFO L175 Difference]: Start difference. First operand has 139 places, 455 transitions, 4089 flow. Second operand 5 states and 802 transitions. [2022-11-25 17:14:10,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 1196 transitions, 13397 flow [2022-11-25 17:14:30,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 1196 transitions, 12856 flow, removed 270 selfloop flow, removed 12 redundant places. [2022-11-25 17:14:31,005 INFO L231 Difference]: Finished difference. Result has 115 places, 287 transitions, 2354 flow [2022-11-25 17:14:31,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=319, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2354, PETRI_PLACES=115, PETRI_TRANSITIONS=287} [2022-11-25 17:14:31,006 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 75 predicate places. [2022-11-25 17:14:31,007 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 287 transitions, 2354 flow [2022-11-25 17:14:31,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:31,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:14:31,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:31,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:14:31,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-25 17:14:31,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1799014853, now seen corresponding path program 4 times [2022-11-25 17:14:31,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:31,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141663959] [2022-11-25 17:14:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:31,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 17:14:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:31,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141663959] [2022-11-25 17:14:31,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141663959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:31,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613970061] [2022-11-25 17:14:31,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:14:31,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:31,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:31,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:31,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b8a3e8e-59bb-4961-ba40-3f2864993947/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:14:32,027 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:14:32,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:14:32,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 17:14:32,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:32,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-11-25 17:14:32,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 17 treesize of output 9 [2022-11-25 17:14:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:14:32,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:14:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:14:32,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613970061] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:14:32,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:14:32,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 21 [2022-11-25 17:14:32,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480816085] [2022-11-25 17:14:32,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:14:32,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 17:14:32,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:32,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 17:14:32,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:14:33,979 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 319 [2022-11-25 17:14:33,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 287 transitions, 2354 flow. Second operand has 22 states, 22 states have (on average 136.36363636363637) internal successors, (3000), 22 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:14:33,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:14:33,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 319 [2022-11-25 17:14:33,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand