./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:34:34,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:34:34,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:34:34,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:34:34,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:34:34,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:34:34,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:34:34,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:34:34,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:34:34,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:34:34,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:34:34,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:34:34,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:34:34,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:34:34,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:34:34,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:34:34,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:34:34,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:34:34,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:34:34,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:34:34,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:34:34,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:34:34,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:34:34,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:34:34,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:34:34,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:34:34,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:34:34,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:34:34,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:34:34,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:34:34,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:34:34,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:34:34,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:34:34,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:34:34,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:34:34,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:34:34,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:34:34,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:34:34,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:34:34,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:34:34,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:34:34,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:34:34,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:34:34,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:34:34,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:34:34,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:34:34,973 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:34:34,973 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:34:34,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:34:34,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:34:34,974 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:34:34,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:34:34,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:34:34,976 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:34:34,976 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:34:34,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:34:34,976 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:34:34,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:34:34,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:34:34,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:34:34,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:34:34,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:34:34,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:34:34,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:34:34,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:34:34,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:34:34,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:34:34,977 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:34:34,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:34:34,978 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:34:34,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:34:34,978 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:34:34,978 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_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 [2022-12-13 21:34:35,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:34:35,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:34:35,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:34:35,172 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:34:35,172 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:34:35,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-12-13 21:34:37,667 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:34:37,822 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:34:37,823 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2022-12-13 21:34:37,828 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/data/09885f2de/8fd4da8150d841c1b4f36469ef04c734/FLAGaec797237 [2022-12-13 21:34:37,838 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/data/09885f2de/8fd4da8150d841c1b4f36469ef04c734 [2022-12-13 21:34:37,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:34:37,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:34:37,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:34:37,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:34:37,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:34:37,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:37" (1/1) ... [2022-12-13 21:34:37,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2313bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:37, skipping insertion in model container [2022-12-13 21:34:37,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:34:37" (1/1) ... [2022-12-13 21:34:37,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:34:37,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:34:38,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,032 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,035 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,036 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,050 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_13d7f688-c543-41c9-9b3f-86ee6287f7aa/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-12-13 21:34:38,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:34:38,066 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:34:38,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 21:34:38,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 21:34:38,097 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_13d7f688-c543-41c9-9b3f-86ee6287f7aa/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2022-12-13 21:34:38,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:34:38,115 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:34:38,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38 WrapperNode [2022-12-13 21:34:38,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:34:38,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:34:38,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:34:38,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:34:38,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,160 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 297 [2022-12-13 21:34:38,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:34:38,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:34:38,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:34:38,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:34:38,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,184 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:34:38,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:34:38,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:34:38,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:34:38,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (1/1) ... [2022-12-13 21:34:38,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:34:38,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:38,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:34:38,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:34:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:34:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:34:38,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:34:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:34:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:34:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:34:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:34:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:34:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:34:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:34:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 21:34:38,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 21:34:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:34:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 21:34:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 21:34:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:34:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:34:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:34:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:34:38,251 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:34:38,354 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:34:38,356 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:34:38,725 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:34:39,005 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:34:39,006 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:34:39,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:34:39 BoogieIcfgContainer [2022-12-13 21:34:39,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:34:39,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:34:39,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:34:39,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:34:39,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:34:37" (1/3) ... [2022-12-13 21:34:39,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772c2938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:34:39, skipping insertion in model container [2022-12-13 21:34:39,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:34:38" (2/3) ... [2022-12-13 21:34:39,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772c2938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:34:39, skipping insertion in model container [2022-12-13 21:34:39,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:34:39" (3/3) ... [2022-12-13 21:34:39,015 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2022-12-13 21:34:39,022 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:34:39,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:34:39,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-12-13 21:34:39,029 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:34:39,163 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2022-12-13 21:34:39,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 236 transitions, 516 flow [2022-12-13 21:34:39,267 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2022-12-13 21:34:39,267 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 21:34:39,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 221 events. 14/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 318 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-12-13 21:34:39,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 236 transitions, 516 flow [2022-12-13 21:34:39,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 202 transitions, 431 flow [2022-12-13 21:34:39,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:34:39,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 202 transitions, 431 flow [2022-12-13 21:34:39,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 202 transitions, 431 flow [2022-12-13 21:34:39,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 202 transitions, 431 flow [2022-12-13 21:34:39,338 INFO L130 PetriNetUnfolder]: 13/202 cut-off events. [2022-12-13 21:34:39,339 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:34:39,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 202 events. 13/202 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 313 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 186. Up to 3 conditions per place. [2022-12-13 21:34:39,342 INFO L119 LiptonReduction]: Number of co-enabled transitions 5092 [2022-12-13 21:34:46,028 INFO L134 LiptonReduction]: Checked pairs total: 20133 [2022-12-13 21:34:46,028 INFO L136 LiptonReduction]: Total number of compositions: 182 [2022-12-13 21:34:46,038 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:34:46,042 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;@2fb45c21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:34:46,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2022-12-13 21:34:46,043 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 21:34:46,043 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:34:46,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:46,044 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 21:34:46,044 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:34:46,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1348, now seen corresponding path program 1 times [2022-12-13 21:34:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:46,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883898293] [2022-12-13 21:34:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:46,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:46,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:46,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883898293] [2022-12-13 21:34:46,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883898293] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:46,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:46,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 21:34:46,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445023319] [2022-12-13 21:34:46,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:46,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:34:46,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:46,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:34:46,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:34:46,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 420 [2022-12-13 21:34:46,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:46,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:46,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 420 [2022-12-13 21:34:46,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:47,906 INFO L130 PetriNetUnfolder]: 11217/15499 cut-off events. [2022-12-13 21:34:47,906 INFO L131 PetriNetUnfolder]: For 962/962 co-relation queries the response was YES. [2022-12-13 21:34:47,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31801 conditions, 15499 events. 11217/15499 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 83705 event pairs, 9848 based on Foata normal form. 0/6999 useless extension candidates. Maximal degree in co-relation 31700. Up to 15100 conditions per place. [2022-12-13 21:34:47,997 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 48 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-12-13 21:34:47,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 237 flow [2022-12-13 21:34:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:34:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 21:34:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 416 transitions. [2022-12-13 21:34:48,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2022-12-13 21:34:48,012 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 416 transitions. [2022-12-13 21:34:48,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 416 transitions. [2022-12-13 21:34:48,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:48,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 416 transitions. [2022-12-13 21:34:48,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:48,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:48,027 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:48,028 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 157 flow. Second operand 2 states and 416 transitions. [2022-12-13 21:34:48,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 237 flow [2022-12-13 21:34:48,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 21:34:48,041 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 124 flow [2022-12-13 21:34:48,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2022-12-13 21:34:48,047 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2022-12-13 21:34:48,047 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 124 flow [2022-12-13 21:34:48,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:48,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:48,048 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:34:48,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:34:48,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:34:48,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash 43107, now seen corresponding path program 1 times [2022-12-13 21:34:48,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:48,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896001554] [2022-12-13 21:34:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:48,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:48,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:48,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896001554] [2022-12-13 21:34:48,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896001554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:48,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:34:48,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:34:48,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931689480] [2022-12-13 21:34:48,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:48,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:34:48,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:48,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:34:48,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:34:48,218 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 420 [2022-12-13 21:34:48,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:48,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:48,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 420 [2022-12-13 21:34:48,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:51,179 INFO L130 PetriNetUnfolder]: 22433/30995 cut-off events. [2022-12-13 21:34:51,180 INFO L131 PetriNetUnfolder]: For 360/360 co-relation queries the response was YES. [2022-12-13 21:34:51,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62367 conditions, 30995 events. 22433/30995 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 1784. Compared 182276 event pairs, 19696 based on Foata normal form. 0/14077 useless extension candidates. Maximal degree in co-relation 62364. Up to 15100 conditions per place. [2022-12-13 21:34:51,297 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 91 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2022-12-13 21:34:51,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 410 flow [2022-12-13 21:34:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:34:51,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:34:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2022-12-13 21:34:51,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49682539682539684 [2022-12-13 21:34:51,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2022-12-13 21:34:51,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2022-12-13 21:34:51,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:51,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2022-12-13 21:34:51,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:51,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:51,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:51,308 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 124 flow. Second operand 3 states and 626 transitions. [2022-12-13 21:34:51,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 410 flow [2022-12-13 21:34:51,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 21:34:51,311 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 138 flow [2022-12-13 21:34:51,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2022-12-13 21:34:51,311 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2022-12-13 21:34:51,312 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 138 flow [2022-12-13 21:34:51,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:51,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:51,312 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:34:51,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:34:51,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:34:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:51,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1337946, now seen corresponding path program 1 times [2022-12-13 21:34:51,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:51,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763643950] [2022-12-13 21:34:51,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:51,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:51,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763643950] [2022-12-13 21:34:51,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763643950] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:34:51,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502744099] [2022-12-13 21:34:51,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:51,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:51,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:51,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:34:51,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:34:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:51,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:34:51,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:51,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:34:51,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502744099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:34:51,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:34:51,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 21:34:51,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724065922] [2022-12-13 21:34:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:34:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:34:51,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:34:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:34:51,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 420 [2022-12-13 21:34:51,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:51,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:51,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 420 [2022-12-13 21:34:51,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:34:54,600 INFO L130 PetriNetUnfolder]: 22433/30994 cut-off events. [2022-12-13 21:34:54,600 INFO L131 PetriNetUnfolder]: For 360/360 co-relation queries the response was YES. [2022-12-13 21:34:54,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62372 conditions, 30994 events. 22433/30994 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 1904. Compared 183562 event pairs, 19696 based on Foata normal form. 0/13999 useless extension candidates. Maximal degree in co-relation 62367. Up to 15098 conditions per place. [2022-12-13 21:34:54,698 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 90 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2022-12-13 21:34:54,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 101 transitions, 416 flow [2022-12-13 21:34:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:34:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:34:54,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 801 transitions. [2022-12-13 21:34:54,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4767857142857143 [2022-12-13 21:34:54,700 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 801 transitions. [2022-12-13 21:34:54,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 801 transitions. [2022-12-13 21:34:54,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:34:54,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 801 transitions. [2022-12-13 21:34:54,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.25) internal successors, (801), 4 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:54,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:54,704 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 420.0) internal successors, (2100), 5 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:54,704 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 138 flow. Second operand 4 states and 801 transitions. [2022-12-13 21:34:54,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 101 transitions, 416 flow [2022-12-13 21:34:54,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 101 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:34:54,706 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 136 flow [2022-12-13 21:34:54,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2022-12-13 21:34:54,706 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2022-12-13 21:34:54,706 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 136 flow [2022-12-13 21:34:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.75) internal successors, (711), 4 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:54,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:34:54,707 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:34:54,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:34:54,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:54,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:34:54,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:34:54,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1337945, now seen corresponding path program 1 times [2022-12-13 21:34:54,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:34:54,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757997099] [2022-12-13 21:34:54,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:54,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:34:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:54,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:54,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757997099] [2022-12-13 21:34:54,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757997099] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:34:54,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285925539] [2022-12-13 21:34:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:34:54,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:34:54,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:34:54,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:34:54,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:34:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:34:55,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:34:55,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:34:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:55,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:34:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:34:55,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285925539] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:34:55,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:34:55,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 21:34:55,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697205444] [2022-12-13 21:34:55,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:34:55,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:34:55,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:34:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:34:55,076 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 420 [2022-12-13 21:34:55,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:34:55,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:34:55,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 420 [2022-12-13 21:34:55,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:03,068 INFO L130 PetriNetUnfolder]: 56081/77482 cut-off events. [2022-12-13 21:35:03,068 INFO L131 PetriNetUnfolder]: For 900/900 co-relation queries the response was YES. [2022-12-13 21:35:03,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155913 conditions, 77482 events. 56081/77482 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 3851. Compared 507695 event pairs, 49240 based on Foata normal form. 0/35236 useless extension candidates. Maximal degree in co-relation 155908. Up to 15099 conditions per place. [2022-12-13 21:35:03,389 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 222 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-12-13 21:35:03,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 236 transitions, 994 flow [2022-12-13 21:35:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:35:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:35:03,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1292 transitions. [2022-12-13 21:35:03,393 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5126984126984127 [2022-12-13 21:35:03,393 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1292 transitions. [2022-12-13 21:35:03,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1292 transitions. [2022-12-13 21:35:03,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:03,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1292 transitions. [2022-12-13 21:35:03,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.33333333333334) internal successors, (1292), 6 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:03,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:03,402 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:03,402 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 136 flow. Second operand 6 states and 1292 transitions. [2022-12-13 21:35:03,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 236 transitions, 994 flow [2022-12-13 21:35:03,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 236 transitions, 991 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:35:03,406 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 169 flow [2022-12-13 21:35:03,406 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2022-12-13 21:35:03,407 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2022-12-13 21:35:03,407 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 169 flow [2022-12-13 21:35:03,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:03,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:03,408 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:35:03,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:35:03,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:03,609 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:35:03,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1205661218, now seen corresponding path program 2 times [2022-12-13 21:35:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:03,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980393349] [2022-12-13 21:35:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:03,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:03,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:03,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980393349] [2022-12-13 21:35:03,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980393349] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:35:03,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591266552] [2022-12-13 21:35:03,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:35:03,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:03,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:03,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:35:03,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:35:03,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:35:03,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:35:03,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:35:03,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:03,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:35:03,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:35:03,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591266552] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:03,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:35:03,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 21:35:03,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424736208] [2022-12-13 21:35:03,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:03,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:35:03,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:03,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:35:03,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:35:03,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:35:03,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:03,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:03,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:35:03,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:10,732 INFO L130 PetriNetUnfolder]: 56081/77481 cut-off events. [2022-12-13 21:35:10,732 INFO L131 PetriNetUnfolder]: For 901/901 co-relation queries the response was YES. [2022-12-13 21:35:10,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155921 conditions, 77481 events. 56081/77481 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 3855. Compared 507717 event pairs, 49240 based on Foata normal form. 1/34997 useless extension candidates. Maximal degree in co-relation 155913. Up to 75481 conditions per place. [2022-12-13 21:35:11,047 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 49 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-12-13 21:35:11,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 59 transitions, 259 flow [2022-12-13 21:35:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:35:11,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:35:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2022-12-13 21:35:11,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2022-12-13 21:35:11,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2022-12-13 21:35:11,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2022-12-13 21:35:11,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:11,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2022-12-13 21:35:11,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,053 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 169 flow. Second operand 3 states and 581 transitions. [2022-12-13 21:35:11,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 59 transitions, 259 flow [2022-12-13 21:35:11,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 241 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 21:35:11,055 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 143 flow [2022-12-13 21:35:11,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2022-12-13 21:35:11,056 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2022-12-13 21:35:11,056 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 143 flow [2022-12-13 21:35:11,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:11,056 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:11,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:35:11,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:11,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:35:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1664516543, now seen corresponding path program 1 times [2022-12-13 21:35:11,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:11,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310609107] [2022-12-13 21:35:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:11,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:11,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310609107] [2022-12-13 21:35:11,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310609107] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:11,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:11,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:35:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053399433] [2022-12-13 21:35:11,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:35:11,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:35:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:35:11,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:35:11,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:11,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:11,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:35:11,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:18,872 INFO L130 PetriNetUnfolder]: 60591/82691 cut-off events. [2022-12-13 21:35:18,872 INFO L131 PetriNetUnfolder]: For 1100/1100 co-relation queries the response was YES. [2022-12-13 21:35:18,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167680 conditions, 82691 events. 60591/82691 cut-off events. For 1100/1100 co-relation queries the response was YES. Maximal size of possible extension queue 4119. Compared 533078 event pairs, 42805 based on Foata normal form. 0/38036 useless extension candidates. Maximal degree in co-relation 167675. Up to 76237 conditions per place. [2022-12-13 21:35:19,199 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 73 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2022-12-13 21:35:19,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 355 flow [2022-12-13 21:35:19,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:35:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:35:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2022-12-13 21:35:19,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2022-12-13 21:35:19,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2022-12-13 21:35:19,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2022-12-13 21:35:19,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:19,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2022-12-13 21:35:19,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:19,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:19,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:19,205 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 143 flow. Second operand 3 states and 610 transitions. [2022-12-13 21:35:19,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 355 flow [2022-12-13 21:35:19,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:35:19,206 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 167 flow [2022-12-13 21:35:19,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2022-12-13 21:35:19,207 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2022-12-13 21:35:19,207 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 167 flow [2022-12-13 21:35:19,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:19,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:19,208 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:19,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:35:19,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:35:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -155798630, now seen corresponding path program 1 times [2022-12-13 21:35:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102235759] [2022-12-13 21:35:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:19,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:19,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:19,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102235759] [2022-12-13 21:35:19,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102235759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:19,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:19,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:35:19,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157122205] [2022-12-13 21:35:19,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:19,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:35:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:19,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:35:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:35:19,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:35:19,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:19,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:19,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:35:19,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:31,116 INFO L130 PetriNetUnfolder]: 97581/133831 cut-off events. [2022-12-13 21:35:31,116 INFO L131 PetriNetUnfolder]: For 9445/9445 co-relation queries the response was YES. [2022-12-13 21:35:31,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291591 conditions, 133831 events. 97581/133831 cut-off events. For 9445/9445 co-relation queries the response was YES. Maximal size of possible extension queue 6594. Compared 941439 event pairs, 51380 based on Foata normal form. 0/68391 useless extension candidates. Maximal degree in co-relation 291585. Up to 81682 conditions per place. [2022-12-13 21:35:31,653 INFO L137 encePairwiseOnDemand]: 416/420 looper letters, 89 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2022-12-13 21:35:31,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 100 transitions, 455 flow [2022-12-13 21:35:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:35:31,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:35:31,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2022-12-13 21:35:31,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49126984126984125 [2022-12-13 21:35:31,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2022-12-13 21:35:31,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2022-12-13 21:35:31,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:31,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2022-12-13 21:35:31,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:31,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:31,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:31,664 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 167 flow. Second operand 3 states and 619 transitions. [2022-12-13 21:35:31,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 100 transitions, 455 flow [2022-12-13 21:35:31,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:35:31,669 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 178 flow [2022-12-13 21:35:31,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2022-12-13 21:35:31,670 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2022-12-13 21:35:31,670 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 178 flow [2022-12-13 21:35:31,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:31,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:31,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:31,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 21:35:31,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:35:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash -155798632, now seen corresponding path program 1 times [2022-12-13 21:35:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:31,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716163693] [2022-12-13 21:35:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:31,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:31,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716163693] [2022-12-13 21:35:31,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716163693] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:31,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:31,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:35:31,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776871752] [2022-12-13 21:35:31,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:31,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:35:31,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:35:31,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:35:31,771 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 420 [2022-12-13 21:35:31,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:31,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:31,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 420 [2022-12-13 21:35:31,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:42,062 INFO L130 PetriNetUnfolder]: 81590/113210 cut-off events. [2022-12-13 21:35:42,062 INFO L131 PetriNetUnfolder]: For 16402/16402 co-relation queries the response was YES. [2022-12-13 21:35:42,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254494 conditions, 113210 events. 81590/113210 cut-off events. For 16402/16402 co-relation queries the response was YES. Maximal size of possible extension queue 5683. Compared 780919 event pairs, 68533 based on Foata normal form. 348/63378 useless extension candidates. Maximal degree in co-relation 254487. Up to 105066 conditions per place. [2022-12-13 21:35:42,522 INFO L137 encePairwiseOnDemand]: 409/420 looper letters, 107 selfloop transitions, 4 changer transitions 10/130 dead transitions. [2022-12-13 21:35:42,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 130 transitions, 604 flow [2022-12-13 21:35:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:35:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:35:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 970 transitions. [2022-12-13 21:35:42,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2022-12-13 21:35:42,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 970 transitions. [2022-12-13 21:35:42,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 970 transitions. [2022-12-13 21:35:42,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:42,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 970 transitions. [2022-12-13 21:35:42,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.0) internal successors, (970), 5 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:42,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:42,530 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:42,530 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 178 flow. Second operand 5 states and 970 transitions. [2022-12-13 21:35:42,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 130 transitions, 604 flow [2022-12-13 21:35:42,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 130 transitions, 601 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:35:42,544 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 218 flow [2022-12-13 21:35:42,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2022-12-13 21:35:42,545 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2022-12-13 21:35:42,545 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 218 flow [2022-12-13 21:35:42,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:42,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:42,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:42,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:35:42,546 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:35:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 60406414, now seen corresponding path program 1 times [2022-12-13 21:35:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:42,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601677395] [2022-12-13 21:35:42,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:42,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601677395] [2022-12-13 21:35:42,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601677395] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:35:42,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:35:42,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:35:42,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300779766] [2022-12-13 21:35:42,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:35:42,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:35:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:35:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:35:42,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 420 [2022-12-13 21:35:42,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:42,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:42,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 420 [2022-12-13 21:35:42,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:35:53,108 INFO L130 PetriNetUnfolder]: 78312/108644 cut-off events. [2022-12-13 21:35:53,108 INFO L131 PetriNetUnfolder]: For 43849/43849 co-relation queries the response was YES. [2022-12-13 21:35:53,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269346 conditions, 108644 events. 78312/108644 cut-off events. For 43849/43849 co-relation queries the response was YES. Maximal size of possible extension queue 5658. Compared 746006 event pairs, 67488 based on Foata normal form. 88/68419 useless extension candidates. Maximal degree in co-relation 269336. Up to 105066 conditions per place. [2022-12-13 21:35:53,602 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 51 selfloop transitions, 2 changer transitions 26/88 dead transitions. [2022-12-13 21:35:53,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 444 flow [2022-12-13 21:35:53,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:35:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:35:53,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2022-12-13 21:35:53,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2022-12-13 21:35:53,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 925 transitions. [2022-12-13 21:35:53,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 925 transitions. [2022-12-13 21:35:53,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:35:53,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 925 transitions. [2022-12-13 21:35:53,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:53,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:53,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:53,612 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 218 flow. Second operand 5 states and 925 transitions. [2022-12-13 21:35:53,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 444 flow [2022-12-13 21:35:53,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 438 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 21:35:53,624 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 208 flow [2022-12-13 21:35:53,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2022-12-13 21:35:53,625 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 6 predicate places. [2022-12-13 21:35:53,625 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 208 flow [2022-12-13 21:35:53,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:53,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:35:53,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:35:53,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 21:35:53,626 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:35:53,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:35:53,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1430070455, now seen corresponding path program 1 times [2022-12-13 21:35:53,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:35:53,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621181894] [2022-12-13 21:35:53,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:53,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:35:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:53,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:35:53,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621181894] [2022-12-13 21:35:53,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621181894] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:35:53,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812855427] [2022-12-13 21:35:53,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:35:53,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:35:53,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:35:53,727 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:35:53,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:35:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:35:53,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:35:53,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:35:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:53,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:35:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:35:53,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812855427] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:35:53,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:35:53,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 21:35:53,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044689119] [2022-12-13 21:35:53,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:35:53,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:35:53,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:35:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:35:53,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:35:54,044 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 420 [2022-12-13 21:35:54,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 208 flow. Second operand has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:35:54,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:35:54,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 420 [2022-12-13 21:35:54,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:02,072 INFO L130 PetriNetUnfolder]: 57674/81111 cut-off events. [2022-12-13 21:36:02,072 INFO L131 PetriNetUnfolder]: For 35976/35976 co-relation queries the response was YES. [2022-12-13 21:36:02,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199328 conditions, 81111 events. 57674/81111 cut-off events. For 35976/35976 co-relation queries the response was YES. Maximal size of possible extension queue 4754. Compared 558146 event pairs, 36521 based on Foata normal form. 1748/52732 useless extension candidates. Maximal degree in co-relation 199316. Up to 56009 conditions per place. [2022-12-13 21:36:02,430 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 112 selfloop transitions, 7 changer transitions 2/130 dead transitions. [2022-12-13 21:36:02,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 130 transitions, 669 flow [2022-12-13 21:36:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:02,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1299 transitions. [2022-12-13 21:36:02,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4418367346938776 [2022-12-13 21:36:02,433 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1299 transitions. [2022-12-13 21:36:02,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1299 transitions. [2022-12-13 21:36:02,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:02,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1299 transitions. [2022-12-13 21:36:02,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.57142857142858) internal successors, (1299), 7 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:02,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:02,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:02,438 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 208 flow. Second operand 7 states and 1299 transitions. [2022-12-13 21:36:02,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 130 transitions, 669 flow [2022-12-13 21:36:02,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 130 transitions, 657 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 21:36:02,464 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 268 flow [2022-12-13 21:36:02,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2022-12-13 21:36:02,464 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2022-12-13 21:36:02,464 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 268 flow [2022-12-13 21:36:02,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:02,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:02,465 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:02,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:36:02,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 21:36:02,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:36:02,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1213865409, now seen corresponding path program 1 times [2022-12-13 21:36:02,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:02,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784761281] [2022-12-13 21:36:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:02,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784761281] [2022-12-13 21:36:02,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784761281] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131093815] [2022-12-13 21:36:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:02,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:02,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:02,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:02,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:36:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:02,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:36:02,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:02,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:02,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:02,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131093815] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:02,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:36:02,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-13 21:36:02,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882381205] [2022-12-13 21:36:02,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:02,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 21:36:02,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:02,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 21:36:02,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 21:36:03,022 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 420 [2022-12-13 21:36:03,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 268 flow. Second operand has 12 states, 12 states have (on average 169.5) internal successors, (2034), 12 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:03,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:03,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 420 [2022-12-13 21:36:03,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:11,110 INFO L130 PetriNetUnfolder]: 56876/79391 cut-off events. [2022-12-13 21:36:11,110 INFO L131 PetriNetUnfolder]: For 72387/72387 co-relation queries the response was YES. [2022-12-13 21:36:11,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220090 conditions, 79391 events. 56876/79391 cut-off events. For 72387/72387 co-relation queries the response was YES. Maximal size of possible extension queue 4721. Compared 542170 event pairs, 42407 based on Foata normal form. 76/52272 useless extension candidates. Maximal degree in co-relation 220076. Up to 67190 conditions per place. [2022-12-13 21:36:11,548 INFO L137 encePairwiseOnDemand]: 411/420 looper letters, 79 selfloop transitions, 4 changer transitions 43/135 dead transitions. [2022-12-13 21:36:11,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 135 transitions, 760 flow [2022-12-13 21:36:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1295 transitions. [2022-12-13 21:36:11,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2022-12-13 21:36:11,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1295 transitions. [2022-12-13 21:36:11,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1295 transitions. [2022-12-13 21:36:11,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:11,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1295 transitions. [2022-12-13 21:36:11,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 185.0) internal successors, (1295), 7 states have internal predecessors, (1295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:11,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:11,557 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:11,557 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 268 flow. Second operand 7 states and 1295 transitions. [2022-12-13 21:36:11,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 135 transitions, 760 flow [2022-12-13 21:36:11,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 135 transitions, 752 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-13 21:36:11,592 INFO L231 Difference]: Finished difference. Result has 87 places, 64 transitions, 264 flow [2022-12-13 21:36:11,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=87, PETRI_TRANSITIONS=64} [2022-12-13 21:36:11,593 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2022-12-13 21:36:11,593 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 64 transitions, 264 flow [2022-12-13 21:36:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.5) internal successors, (2034), 12 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:11,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:11,593 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:11,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:36:11,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:11,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:36:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:11,796 INFO L85 PathProgramCache]: Analyzing trace with hash 723777667, now seen corresponding path program 1 times [2022-12-13 21:36:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:11,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718434300] [2022-12-13 21:36:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:36:11,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:11,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718434300] [2022-12-13 21:36:11,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718434300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:11,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:11,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:36:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194786750] [2022-12-13 21:36:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:11,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:36:11,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:11,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:36:11,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:36:11,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:36:11,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 64 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:11,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:11,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:36:11,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:19,223 INFO L130 PetriNetUnfolder]: 49471/69003 cut-off events. [2022-12-13 21:36:19,223 INFO L131 PetriNetUnfolder]: For 67683/67683 co-relation queries the response was YES. [2022-12-13 21:36:19,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200967 conditions, 69003 events. 49471/69003 cut-off events. For 67683/67683 co-relation queries the response was YES. Maximal size of possible extension queue 3936. Compared 463398 event pairs, 36006 based on Foata normal form. 1266/46515 useless extension candidates. Maximal degree in co-relation 200950. Up to 57502 conditions per place. [2022-12-13 21:36:19,634 INFO L137 encePairwiseOnDemand]: 414/420 looper letters, 89 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2022-12-13 21:36:19,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 603 flow [2022-12-13 21:36:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:36:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:36:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 617 transitions. [2022-12-13 21:36:19,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48968253968253966 [2022-12-13 21:36:19,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 617 transitions. [2022-12-13 21:36:19,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 617 transitions. [2022-12-13 21:36:19,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:19,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 617 transitions. [2022-12-13 21:36:19,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:19,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:19,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:19,641 INFO L175 Difference]: Start difference. First operand has 87 places, 64 transitions, 264 flow. Second operand 3 states and 617 transitions. [2022-12-13 21:36:19,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 102 transitions, 603 flow [2022-12-13 21:36:20,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 102 transitions, 581 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-13 21:36:20,441 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 275 flow [2022-12-13 21:36:20,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2022-12-13 21:36:20,442 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 9 predicate places. [2022-12-13 21:36:20,442 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 275 flow [2022-12-13 21:36:20,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:20,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:20,442 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:20,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 21:36:20,442 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:36:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash 723777720, now seen corresponding path program 2 times [2022-12-13 21:36:20,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:20,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869996998] [2022-12-13 21:36:20,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:20,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:20,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:20,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869996998] [2022-12-13 21:36:20,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869996998] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:20,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405854203] [2022-12-13 21:36:20,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:36:20,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:20,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:20,760 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:20,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:36:20,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:36:20,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:20,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 21:36:20,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:20,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:36:20,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:20,952 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 16 treesize of output 18 [2022-12-13 21:36:20,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:20,988 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 16 treesize of output 18 [2022-12-13 21:36:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:21,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:21,056 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_288 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_288) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296)) is different from false [2022-12-13 21:36:21,113 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:21,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 21:36:21,122 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:21,122 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 141 treesize of output 131 [2022-12-13 21:36:21,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2022-12-13 21:36:21,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 94 [2022-12-13 21:36:21,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:21,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405854203] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:21,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:36:21,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-12-13 21:36:21,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854613327] [2022-12-13 21:36:21,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:21,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 21:36:21,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 21:36:21,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=284, Unknown=3, NotChecked=34, Total=380 [2022-12-13 21:36:21,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 420 [2022-12-13 21:36:21,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 275 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:21,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:21,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 420 [2022-12-13 21:36:21,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:29,766 INFO L130 PetriNetUnfolder]: 55387/76935 cut-off events. [2022-12-13 21:36:29,766 INFO L131 PetriNetUnfolder]: For 83463/83463 co-relation queries the response was YES. [2022-12-13 21:36:29,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229106 conditions, 76935 events. 55387/76935 cut-off events. For 83463/83463 co-relation queries the response was YES. Maximal size of possible extension queue 4040. Compared 505888 event pairs, 24114 based on Foata normal form. 0/51342 useless extension candidates. Maximal degree in co-relation 229090. Up to 75397 conditions per place. [2022-12-13 21:36:30,155 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 71 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2022-12-13 21:36:30,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 526 flow [2022-12-13 21:36:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1115 transitions. [2022-12-13 21:36:30,157 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3792517006802721 [2022-12-13 21:36:30,157 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1115 transitions. [2022-12-13 21:36:30,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1115 transitions. [2022-12-13 21:36:30,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:30,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1115 transitions. [2022-12-13 21:36:30,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.28571428571428) internal successors, (1115), 7 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:30,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:30,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:30,163 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 275 flow. Second operand 7 states and 1115 transitions. [2022-12-13 21:36:30,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 526 flow [2022-12-13 21:36:30,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:36:30,194 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 326 flow [2022-12-13 21:36:30,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=326, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2022-12-13 21:36:30,194 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2022-12-13 21:36:30,194 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 326 flow [2022-12-13 21:36:30,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:30,195 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:30,195 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:30,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:36:30,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 21:36:30,397 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:36:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:30,398 INFO L85 PathProgramCache]: Analyzing trace with hash 723777719, now seen corresponding path program 1 times [2022-12-13 21:36:30,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:30,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329941885] [2022-12-13 21:36:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:30,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:30,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329941885] [2022-12-13 21:36:30,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329941885] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:30,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610255482] [2022-12-13 21:36:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:30,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:30,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:30,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:36:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:30,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 21:36:30,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:30,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:36:30,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:30,870 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 18 treesize of output 20 [2022-12-13 21:36:30,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:30,901 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 18 treesize of output 20 [2022-12-13 21:36:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:30,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:31,000 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:31,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-13 21:36:31,007 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:31,008 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 81 treesize of output 77 [2022-12-13 21:36:31,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-12-13 21:36:31,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2022-12-13 21:36:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:31,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610255482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:31,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:36:31,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-12-13 21:36:31,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951497056] [2022-12-13 21:36:31,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:31,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 21:36:31,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:31,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 21:36:31,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=249, Unknown=4, NotChecked=0, Total=306 [2022-12-13 21:36:31,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 420 [2022-12-13 21:36:31,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 326 flow. Second operand has 18 states, 18 states have (on average 150.5) internal successors, (2709), 18 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:31,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:31,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 420 [2022-12-13 21:36:31,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:40,036 INFO L130 PetriNetUnfolder]: 55369/76899 cut-off events. [2022-12-13 21:36:40,036 INFO L131 PetriNetUnfolder]: For 80718/80718 co-relation queries the response was YES. [2022-12-13 21:36:40,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229174 conditions, 76899 events. 55369/76899 cut-off events. For 80718/80718 co-relation queries the response was YES. Maximal size of possible extension queue 4063. Compared 505850 event pairs, 25488 based on Foata normal form. 0/49926 useless extension candidates. Maximal degree in co-relation 229156. Up to 75391 conditions per place. [2022-12-13 21:36:40,426 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 71 selfloop transitions, 8 changer transitions 0/84 dead transitions. [2022-12-13 21:36:40,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 84 transitions, 538 flow [2022-12-13 21:36:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:36:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:36:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1114 transitions. [2022-12-13 21:36:40,429 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.37891156462585035 [2022-12-13 21:36:40,429 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1114 transitions. [2022-12-13 21:36:40,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1114 transitions. [2022-12-13 21:36:40,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:40,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1114 transitions. [2022-12-13 21:36:40,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:40,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:40,434 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:40,434 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 326 flow. Second operand 7 states and 1114 transitions. [2022-12-13 21:36:40,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 84 transitions, 538 flow [2022-12-13 21:36:40,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 519 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-12-13 21:36:40,491 INFO L231 Difference]: Finished difference. Result has 88 places, 69 transitions, 313 flow [2022-12-13 21:36:40,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=88, PETRI_TRANSITIONS=69} [2022-12-13 21:36:40,491 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2022-12-13 21:36:40,491 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 69 transitions, 313 flow [2022-12-13 21:36:40,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 150.5) internal successors, (2709), 18 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:40,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:40,492 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:40,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:36:40,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 21:36:40,693 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:36:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash 939982770, now seen corresponding path program 1 times [2022-12-13 21:36:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:40,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126481857] [2022-12-13 21:36:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:40,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:36:40,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:40,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126481857] [2022-12-13 21:36:40,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126481857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:36:40,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:36:40,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:36:40,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401377841] [2022-12-13 21:36:40,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:36:40,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:36:40,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:40,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:36:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:36:40,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:36:40,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:40,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:40,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:36:40,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:36:51,959 INFO L130 PetriNetUnfolder]: 68050/94674 cut-off events. [2022-12-13 21:36:51,959 INFO L131 PetriNetUnfolder]: For 102295/102295 co-relation queries the response was YES. [2022-12-13 21:36:52,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280129 conditions, 94674 events. 68050/94674 cut-off events. For 102295/102295 co-relation queries the response was YES. Maximal size of possible extension queue 4555. Compared 662772 event pairs, 37356 based on Foata normal form. 0/60777 useless extension candidates. Maximal degree in co-relation 280113. Up to 64675 conditions per place. [2022-12-13 21:36:52,470 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 99 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2022-12-13 21:36:52,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 112 transitions, 726 flow [2022-12-13 21:36:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:36:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:36:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2022-12-13 21:36:52,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2022-12-13 21:36:52,472 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2022-12-13 21:36:52,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2022-12-13 21:36:52,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:36:52,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2022-12-13 21:36:52,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:52,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:52,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:52,475 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 313 flow. Second operand 3 states and 620 transitions. [2022-12-13 21:36:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 112 transitions, 726 flow [2022-12-13 21:36:52,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 706 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:36:52,507 INFO L231 Difference]: Finished difference. Result has 85 places, 71 transitions, 322 flow [2022-12-13 21:36:52,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=85, PETRI_TRANSITIONS=71} [2022-12-13 21:36:52,508 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2022-12-13 21:36:52,508 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 71 transitions, 322 flow [2022-12-13 21:36:52,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:52,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:36:52,508 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:36:52,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 21:36:52,509 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:36:52,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:52,509 INFO L85 PathProgramCache]: Analyzing trace with hash 939982766, now seen corresponding path program 2 times [2022-12-13 21:36:52,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:52,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101224949] [2022-12-13 21:36:52,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:52,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:52,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:52,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101224949] [2022-12-13 21:36:52,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101224949] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:52,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104911092] [2022-12-13 21:36:52,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:36:52,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:52,764 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:52,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:36:52,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:36:52,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:36:52,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 21:36:52,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:52,903 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 21:36:52,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-12-13 21:36:52,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:36:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:52,979 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 18 treesize of output 20 [2022-12-13 21:36:53,002 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:36:53,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 21:36:53,020 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 16 treesize of output 18 [2022-12-13 21:36:53,031 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 [2022-12-13 21:36:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:53,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:53,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:53,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-13 21:36:53,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:36:53,175 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 81 treesize of output 77 [2022-12-13 21:36:53,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2022-12-13 21:36:53,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-13 21:36:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:36:53,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104911092] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:36:53,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:36:53,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 21:36:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943894530] [2022-12-13 21:36:53,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:53,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 21:36:53,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 21:36:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=286, Unknown=6, NotChecked=0, Total=342 [2022-12-13 21:36:54,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 420 [2022-12-13 21:36:54,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 71 transitions, 322 flow. Second operand has 19 states, 19 states have (on average 138.26315789473685) internal successors, (2627), 19 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:36:54,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:36:54,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 420 [2022-12-13 21:36:54,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:14,106 INFO L130 PetriNetUnfolder]: 118261/161517 cut-off events. [2022-12-13 21:37:14,106 INFO L131 PetriNetUnfolder]: For 165819/165819 co-relation queries the response was YES. [2022-12-13 21:37:14,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505694 conditions, 161517 events. 118261/161517 cut-off events. For 165819/165819 co-relation queries the response was YES. Maximal size of possible extension queue 6929. Compared 1116496 event pairs, 50412 based on Foata normal form. 0/114765 useless extension candidates. Maximal degree in co-relation 505677. Up to 90267 conditions per place. [2022-12-13 21:37:15,064 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 153 selfloop transitions, 31 changer transitions 0/189 dead transitions. [2022-12-13 21:37:15,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 189 transitions, 1200 flow [2022-12-13 21:37:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:37:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 21:37:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1943 transitions. [2022-12-13 21:37:15,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3558608058608059 [2022-12-13 21:37:15,068 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1943 transitions. [2022-12-13 21:37:15,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1943 transitions. [2022-12-13 21:37:15,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:15,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1943 transitions. [2022-12-13 21:37:15,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 149.46153846153845) internal successors, (1943), 13 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:15,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 420.0) internal successors, (5880), 14 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:15,075 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 420.0) internal successors, (5880), 14 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:15,075 INFO L175 Difference]: Start difference. First operand has 85 places, 71 transitions, 322 flow. Second operand 13 states and 1943 transitions. [2022-12-13 21:37:15,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 189 transitions, 1200 flow [2022-12-13 21:37:15,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 189 transitions, 1193 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:37:15,245 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 552 flow [2022-12-13 21:37:15,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=552, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2022-12-13 21:37:15,245 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 30 predicate places. [2022-12-13 21:37:15,246 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 552 flow [2022-12-13 21:37:15,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 138.26315789473685) internal successors, (2627), 19 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:15,246 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:15,246 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:15,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 21:37:15,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 21:37:15,448 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:37:15,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash 939982767, now seen corresponding path program 1 times [2022-12-13 21:37:15,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:15,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096625329] [2022-12-13 21:37:15,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:15,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:15,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:15,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096625329] [2022-12-13 21:37:15,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096625329] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:15,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052248272] [2022-12-13 21:37:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:15,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:15,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:15,729 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:15,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:37:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:15,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 21:37:15,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:15,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:37:15,854 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 21:37:15,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-12-13 21:37:15,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:37:15,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:37:15,921 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 16 treesize of output 18 [2022-12-13 21:37:15,944 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:37:15,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 21:37:15,964 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 16 treesize of output 18 [2022-12-13 21:37:15,985 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 19 treesize of output 7 [2022-12-13 21:37:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:15,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:16,178 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:37:16,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 21:37:16,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:37:16,186 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 141 treesize of output 131 [2022-12-13 21:37:16,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2022-12-13 21:37:16,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 94 [2022-12-13 21:37:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:16,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052248272] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:16,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:16,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2022-12-13 21:37:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416513372] [2022-12-13 21:37:16,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 21:37:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 21:37:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=396, Unknown=3, NotChecked=0, Total=462 [2022-12-13 21:37:16,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 420 [2022-12-13 21:37:16,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 552 flow. Second operand has 22 states, 22 states have (on average 138.3181818181818) internal successors, (3043), 22 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:16,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:16,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 420 [2022-12-13 21:37:16,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:36,258 INFO L130 PetriNetUnfolder]: 118255/163065 cut-off events. [2022-12-13 21:37:36,258 INFO L131 PetriNetUnfolder]: For 237375/237399 co-relation queries the response was YES. [2022-12-13 21:37:36,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553139 conditions, 163065 events. 118255/163065 cut-off events. For 237375/237399 co-relation queries the response was YES. Maximal size of possible extension queue 7201. Compared 1157476 event pairs, 54600 based on Foata normal form. 3063/126981 useless extension candidates. Maximal degree in co-relation 553117. Up to 91839 conditions per place. [2022-12-13 21:37:37,256 INFO L137 encePairwiseOnDemand]: 407/420 looper letters, 159 selfloop transitions, 39 changer transitions 0/203 dead transitions. [2022-12-13 21:37:37,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 203 transitions, 1430 flow [2022-12-13 21:37:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:37:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 21:37:37,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1941 transitions. [2022-12-13 21:37:37,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3554945054945055 [2022-12-13 21:37:37,260 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1941 transitions. [2022-12-13 21:37:37,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1941 transitions. [2022-12-13 21:37:37,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:37,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1941 transitions. [2022-12-13 21:37:37,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 149.30769230769232) internal successors, (1941), 13 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:37,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 420.0) internal successors, (5880), 14 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:37,268 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 420.0) internal successors, (5880), 14 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:37,268 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 552 flow. Second operand 13 states and 1941 transitions. [2022-12-13 21:37:37,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 203 transitions, 1430 flow [2022-12-13 21:37:37,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 203 transitions, 1404 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-13 21:37:37,520 INFO L231 Difference]: Finished difference. Result has 110 places, 108 transitions, 648 flow [2022-12-13 21:37:37,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=110, PETRI_TRANSITIONS=108} [2022-12-13 21:37:37,521 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 38 predicate places. [2022-12-13 21:37:37,521 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 108 transitions, 648 flow [2022-12-13 21:37:37,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 138.3181818181818) internal successors, (3043), 22 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:37,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:37,521 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:37,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 21:37:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 21:37:37,722 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:37:37,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash 962274244, now seen corresponding path program 1 times [2022-12-13 21:37:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:37,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127109439] [2022-12-13 21:37:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:37,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:37,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127109439] [2022-12-13 21:37:37,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127109439] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:37,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689776293] [2022-12-13 21:37:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:37,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:37,805 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:37,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 21:37:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:37,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:37:37,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:37,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:37:38,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689776293] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:37:38,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:37:38,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-12-13 21:37:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116293753] [2022-12-13 21:37:38,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 21:37:38,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 21:37:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:37:38,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 420 [2022-12-13 21:37:38,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 108 transitions, 648 flow. Second operand has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:38,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:38,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 420 [2022-12-13 21:37:38,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:37:54,854 INFO L130 PetriNetUnfolder]: 90472/125756 cut-off events. [2022-12-13 21:37:54,854 INFO L131 PetriNetUnfolder]: For 239961/240352 co-relation queries the response was YES. [2022-12-13 21:37:55,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438797 conditions, 125756 events. 90472/125756 cut-off events. For 239961/240352 co-relation queries the response was YES. Maximal size of possible extension queue 5624. Compared 889338 event pairs, 55023 based on Foata normal form. 3472/99016 useless extension candidates. Maximal degree in co-relation 438775. Up to 85928 conditions per place. [2022-12-13 21:37:55,718 INFO L137 encePairwiseOnDemand]: 406/420 looper letters, 271 selfloop transitions, 13 changer transitions 14/331 dead transitions. [2022-12-13 21:37:55,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 331 transitions, 2511 flow [2022-12-13 21:37:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:37:55,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 21:37:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1901 transitions. [2022-12-13 21:37:55,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45261904761904764 [2022-12-13 21:37:55,721 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1901 transitions. [2022-12-13 21:37:55,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1901 transitions. [2022-12-13 21:37:55,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:37:55,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1901 transitions. [2022-12-13 21:37:55,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.1) internal successors, (1901), 10 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:55,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:55,727 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 420.0) internal successors, (4620), 11 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:55,727 INFO L175 Difference]: Start difference. First operand has 110 places, 108 transitions, 648 flow. Second operand 10 states and 1901 transitions. [2022-12-13 21:37:55,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 331 transitions, 2511 flow [2022-12-13 21:37:56,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 331 transitions, 2474 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-12-13 21:37:56,525 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 783 flow [2022-12-13 21:37:56,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=628, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=783, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2022-12-13 21:37:56,525 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 46 predicate places. [2022-12-13 21:37:56,526 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 783 flow [2022-12-13 21:37:56,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:56,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:37:56,526 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:37:56,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 21:37:56,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 21:37:56,728 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:37:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -925303938, now seen corresponding path program 1 times [2022-12-13 21:37:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:56,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851735777] [2022-12-13 21:37:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:56,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 21:37:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:56,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851735777] [2022-12-13 21:37:56,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851735777] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:37:56,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:37:56,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:37:56,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54772627] [2022-12-13 21:37:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:37:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:37:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:37:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:37:56,788 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:37:56,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 783 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:37:56,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:37:56,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:37:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:09,878 INFO L130 PetriNetUnfolder]: 73445/102981 cut-off events. [2022-12-13 21:38:09,878 INFO L131 PetriNetUnfolder]: For 322068/322253 co-relation queries the response was YES. [2022-12-13 21:38:10,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397692 conditions, 102981 events. 73445/102981 cut-off events. For 322068/322253 co-relation queries the response was YES. Maximal size of possible extension queue 4444. Compared 712639 event pairs, 61317 based on Foata normal form. 2866/82319 useless extension candidates. Maximal degree in co-relation 397664. Up to 99595 conditions per place. [2022-12-13 21:38:10,551 INFO L137 encePairwiseOnDemand]: 417/420 looper letters, 81 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2022-12-13 21:38:10,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 935 flow [2022-12-13 21:38:10,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:38:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:38:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2022-12-13 21:38:10,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2022-12-13 21:38:10,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2022-12-13 21:38:10,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2022-12-13 21:38:10,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:10,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2022-12-13 21:38:10,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:10,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:10,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:10,555 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 783 flow. Second operand 3 states and 580 transitions. [2022-12-13 21:38:10,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 935 flow [2022-12-13 21:38:10,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 909 flow, removed 10 selfloop flow, removed 4 redundant places. [2022-12-13 21:38:10,881 INFO L231 Difference]: Finished difference. Result has 114 places, 115 transitions, 747 flow [2022-12-13 21:38:10,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=747, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2022-12-13 21:38:10,882 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 42 predicate places. [2022-12-13 21:38:10,882 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 747 flow [2022-12-13 21:38:10,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:10,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:10,882 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:10,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 21:38:10,882 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:38:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash 546829492, now seen corresponding path program 1 times [2022-12-13 21:38:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:10,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865017392] [2022-12-13 21:38:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:10,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:10,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:38:10,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865017392] [2022-12-13 21:38:10,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865017392] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:38:10,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305960213] [2022-12-13 21:38:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:10,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:10,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:38:10,920 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:38:10,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 21:38:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:11,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:38:11,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:11,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:38:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:11,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305960213] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:38:11,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:38:11,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 21:38:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900975608] [2022-12-13 21:38:11,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:38:11,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:38:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:38:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:38:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:38:11,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:38:11,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 747 flow. Second operand has 7 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:11,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:11,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:38:11,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:38:37,125 INFO L130 PetriNetUnfolder]: 144986/206589 cut-off events. [2022-12-13 21:38:37,125 INFO L131 PetriNetUnfolder]: For 587140/587533 co-relation queries the response was YES. [2022-12-13 21:38:37,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747560 conditions, 206589 events. 144986/206589 cut-off events. For 587140/587533 co-relation queries the response was YES. Maximal size of possible extension queue 7351. Compared 1585562 event pairs, 38512 based on Foata normal form. 7021/166262 useless extension candidates. Maximal degree in co-relation 747532. Up to 75359 conditions per place. [2022-12-13 21:38:38,654 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 263 selfloop transitions, 17 changer transitions 0/313 dead transitions. [2022-12-13 21:38:38,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 313 transitions, 2523 flow [2022-12-13 21:38:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:38:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:38:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1248 transitions. [2022-12-13 21:38:38,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2022-12-13 21:38:38,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1248 transitions. [2022-12-13 21:38:38,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1248 transitions. [2022-12-13 21:38:38,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:38:38,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1248 transitions. [2022-12-13 21:38:38,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:38,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:38,661 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 420.0) internal successors, (2940), 7 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:38,661 INFO L175 Difference]: Start difference. First operand has 114 places, 115 transitions, 747 flow. Second operand 6 states and 1248 transitions. [2022-12-13 21:38:38,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 313 transitions, 2523 flow [2022-12-13 21:38:41,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 313 transitions, 2520 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 21:38:41,467 INFO L231 Difference]: Finished difference. Result has 121 places, 126 transitions, 928 flow [2022-12-13 21:38:41,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=928, PETRI_PLACES=121, PETRI_TRANSITIONS=126} [2022-12-13 21:38:41,468 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 49 predicate places. [2022-12-13 21:38:41,468 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 126 transitions, 928 flow [2022-12-13 21:38:41,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 180.42857142857142) internal successors, (1263), 7 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:41,468 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:38:41,468 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:38:41,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 21:38:41,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:41,669 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:38:41,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1860559676, now seen corresponding path program 1 times [2022-12-13 21:38:41,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:41,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282715141] [2022-12-13 21:38:41,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:41,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:38:41,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282715141] [2022-12-13 21:38:41,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282715141] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:38:41,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184516255] [2022-12-13 21:38:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:41,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:41,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:38:41,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:38:41,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 21:38:41,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:41,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:38:41,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:41,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:41,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:38:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:38:41,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184516255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:38:41,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:38:41,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 21:38:41,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884702950] [2022-12-13 21:38:41,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:38:41,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:38:41,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:38:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:38:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:38:41,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:38:41,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 126 transitions, 928 flow. Second operand has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:38:41,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:38:41,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:38:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:36,234 INFO L130 PetriNetUnfolder]: 280389/378223 cut-off events. [2022-12-13 21:39:36,234 INFO L131 PetriNetUnfolder]: For 1064508/1065327 co-relation queries the response was YES. [2022-12-13 21:39:37,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1455529 conditions, 378223 events. 280389/378223 cut-off events. For 1064508/1065327 co-relation queries the response was YES. Maximal size of possible extension queue 10913. Compared 2797119 event pairs, 65938 based on Foata normal form. 8817/282783 useless extension candidates. Maximal degree in co-relation 1455498. Up to 123114 conditions per place. [2022-12-13 21:39:39,418 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 329 selfloop transitions, 31 changer transitions 0/393 dead transitions. [2022-12-13 21:39:39,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 393 transitions, 3709 flow [2022-12-13 21:39:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:39:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 21:39:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1463 transitions. [2022-12-13 21:39:39,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4976190476190476 [2022-12-13 21:39:39,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1463 transitions. [2022-12-13 21:39:39,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1463 transitions. [2022-12-13 21:39:39,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:39,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1463 transitions. [2022-12-13 21:39:39,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:39,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:39,425 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 420.0) internal successors, (3360), 8 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:39,425 INFO L175 Difference]: Start difference. First operand has 121 places, 126 transitions, 928 flow. Second operand 7 states and 1463 transitions. [2022-12-13 21:39:39,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 393 transitions, 3709 flow [2022-12-13 21:39:50,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 393 transitions, 3577 flow, removed 56 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:50,731 INFO L231 Difference]: Finished difference. Result has 129 places, 144 transitions, 1141 flow [2022-12-13 21:39:50,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1141, PETRI_PLACES=129, PETRI_TRANSITIONS=144} [2022-12-13 21:39:50,731 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 57 predicate places. [2022-12-13 21:39:50,732 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 144 transitions, 1141 flow [2022-12-13 21:39:50,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:50,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:50,732 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:50,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 21:39:50,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:50,933 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:39:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:50,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1860559621, now seen corresponding path program 2 times [2022-12-13 21:39:50,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:50,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694887783] [2022-12-13 21:39:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:50,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:50,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:50,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694887783] [2022-12-13 21:39:50,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694887783] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:50,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:50,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305547792] [2022-12-13 21:39:50,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:50,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:50,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:39:50,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 144 transitions, 1141 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:50,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:50,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:39:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:40:40,861 INFO L130 PetriNetUnfolder]: 254007/349037 cut-off events. [2022-12-13 21:40:40,861 INFO L131 PetriNetUnfolder]: For 1187782/1189369 co-relation queries the response was YES. [2022-12-13 21:40:42,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443112 conditions, 349037 events. 254007/349037 cut-off events. For 1187782/1189369 co-relation queries the response was YES. Maximal size of possible extension queue 10290. Compared 2584400 event pairs, 198970 based on Foata normal form. 15/267046 useless extension candidates. Maximal degree in co-relation 1443077. Up to 337357 conditions per place. [2022-12-13 21:40:43,851 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 106 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2022-12-13 21:40:43,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 140 transitions, 1318 flow [2022-12-13 21:40:43,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:40:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:40:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2022-12-13 21:40:43,854 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4587301587301587 [2022-12-13 21:40:43,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2022-12-13 21:40:43,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2022-12-13 21:40:43,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:40:43,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2022-12-13 21:40:43,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:43,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:43,856 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:43,856 INFO L175 Difference]: Start difference. First operand has 129 places, 144 transitions, 1141 flow. Second operand 3 states and 578 transitions. [2022-12-13 21:40:43,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 140 transitions, 1318 flow [2022-12-13 21:40:51,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 140 transitions, 1276 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-13 21:40:51,589 INFO L231 Difference]: Finished difference. Result has 129 places, 140 transitions, 1064 flow [2022-12-13 21:40:51,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1064, PETRI_PLACES=129, PETRI_TRANSITIONS=140} [2022-12-13 21:40:51,589 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 57 predicate places. [2022-12-13 21:40:51,589 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 140 transitions, 1064 flow [2022-12-13 21:40:51,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:40:51,589 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:40:51,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 21:40:51,590 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:40:51,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:40:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1860559620, now seen corresponding path program 1 times [2022-12-13 21:40:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:40:51,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914832709] [2022-12-13 21:40:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:40:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:40:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:40:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:40:51,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:40:51,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914832709] [2022-12-13 21:40:51,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914832709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:40:51,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:40:51,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:40:51,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845310607] [2022-12-13 21:40:51,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:40:51,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:40:51,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:40:51,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:40:51,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:40:51,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:40:51,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 140 transitions, 1064 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:40:51,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:40:51,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:40:51,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:41:33,715 INFO L130 PetriNetUnfolder]: 226313/311635 cut-off events. [2022-12-13 21:41:33,716 INFO L131 PetriNetUnfolder]: For 1004358/1005801 co-relation queries the response was YES. [2022-12-13 21:41:35,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249536 conditions, 311635 events. 226313/311635 cut-off events. For 1004358/1005801 co-relation queries the response was YES. Maximal size of possible extension queue 9137. Compared 2287361 event pairs, 177664 based on Foata normal form. 15/245956 useless extension candidates. Maximal degree in co-relation 1249500. Up to 301083 conditions per place. [2022-12-13 21:41:36,305 INFO L137 encePairwiseOnDemand]: 418/420 looper letters, 102 selfloop transitions, 1 changer transitions 0/136 dead transitions. [2022-12-13 21:41:36,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 136 transitions, 1239 flow [2022-12-13 21:41:36,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:41:36,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:41:36,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 577 transitions. [2022-12-13 21:41:36,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4579365079365079 [2022-12-13 21:41:36,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 577 transitions. [2022-12-13 21:41:36,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 577 transitions. [2022-12-13 21:41:36,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:41:36,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 577 transitions. [2022-12-13 21:41:36,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:36,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:36,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 420.0) internal successors, (1680), 4 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:36,310 INFO L175 Difference]: Start difference. First operand has 129 places, 140 transitions, 1064 flow. Second operand 3 states and 577 transitions. [2022-12-13 21:41:36,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 136 transitions, 1239 flow [2022-12-13 21:41:42,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 136 transitions, 1238 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:41:42,071 INFO L231 Difference]: Finished difference. Result has 129 places, 136 transitions, 1034 flow [2022-12-13 21:41:42,071 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1034, PETRI_PLACES=129, PETRI_TRANSITIONS=136} [2022-12-13 21:41:42,071 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 57 predicate places. [2022-12-13 21:41:42,071 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 136 transitions, 1034 flow [2022-12-13 21:41:42,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:42,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:41:42,071 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:41:42,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 21:41:42,072 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:41:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:41:42,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1842772114, now seen corresponding path program 1 times [2022-12-13 21:41:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:41:42,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48887052] [2022-12-13 21:41:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:42,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:41:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:42,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:41:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48887052] [2022-12-13 21:41:42,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48887052] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:41:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715229183] [2022-12-13 21:41:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:41:42,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:41:42,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:41:42,115 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:41:42,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 21:41:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:41:42,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:41:42,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:41:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:41:42,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:41:42,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715229183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:41:42,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:41:42,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-12-13 21:41:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032287776] [2022-12-13 21:41:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:41:42,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:41:42,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:41:42,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:41:42,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:41:42,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 420 [2022-12-13 21:41:42,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 136 transitions, 1034 flow. Second operand has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:41:42,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:41:42,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 420 [2022-12-13 21:41:42,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:42:22,092 INFO L130 PetriNetUnfolder]: 207959/283141 cut-off events. [2022-12-13 21:42:22,092 INFO L131 PetriNetUnfolder]: For 794524/795007 co-relation queries the response was YES. [2022-12-13 21:42:23,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140841 conditions, 283141 events. 207959/283141 cut-off events. For 794524/795007 co-relation queries the response was YES. Maximal size of possible extension queue 8160. Compared 2094750 event pairs, 16212 based on Foata normal form. 5897/230629 useless extension candidates. Maximal degree in co-relation 1140805. Up to 153294 conditions per place. [2022-12-13 21:42:24,481 INFO L137 encePairwiseOnDemand]: 415/420 looper letters, 233 selfloop transitions, 15 changer transitions 0/281 dead transitions. [2022-12-13 21:42:24,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 281 transitions, 2589 flow [2022-12-13 21:42:24,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:42:24,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:42:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1028 transitions. [2022-12-13 21:42:24,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4895238095238095 [2022-12-13 21:42:24,483 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1028 transitions. [2022-12-13 21:42:24,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1028 transitions. [2022-12-13 21:42:24,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:42:24,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1028 transitions. [2022-12-13 21:42:24,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.6) internal successors, (1028), 5 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:24,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:24,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 420.0) internal successors, (2520), 6 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:42:24,486 INFO L175 Difference]: Start difference. First operand has 129 places, 136 transitions, 1034 flow. Second operand 5 states and 1028 transitions. [2022-12-13 21:42:24,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 281 transitions, 2589 flow [2022-12-13 21:43:20,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 281 transitions, 2588 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:43:20,306 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 1026 flow [2022-12-13 21:43:20,306 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1026, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2022-12-13 21:43:20,306 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 58 predicate places. [2022-12-13 21:43:20,306 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 1026 flow [2022-12-13 21:43:20,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:20,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:43:20,307 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:43:20,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 21:43:20,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 21:43:20,508 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:43:20,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:43:20,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1860559624, now seen corresponding path program 1 times [2022-12-13 21:43:20,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:43:20,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851847177] [2022-12-13 21:43:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:20,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:43:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:20,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:43:20,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851847177] [2022-12-13 21:43:20,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851847177] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:43:20,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327086039] [2022-12-13 21:43:20,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:43:20,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:43:20,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:43:20,764 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:43:20,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 21:43:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:43:20,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 21:43:20,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:43:20,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:43:20,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:43:20,984 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 18 treesize of output 20 [2022-12-13 21:43:21,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:43:21,022 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 18 treesize of output 20 [2022-12-13 21:43:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:21,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:43:21,110 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_710 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_710) c_~X_0~0.base) (+ 8 c_~X_0~0.offset)) 9223372039002259456))) is different from false [2022-12-13 21:43:21,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:43:21,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-13 21:43:21,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:43:21,176 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 81 treesize of output 77 [2022-12-13 21:43:21,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2022-12-13 21:43:21,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2022-12-13 21:43:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:43:21,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327086039] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:43:21,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:43:21,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-12-13 21:43:21,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841793583] [2022-12-13 21:43:21,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:43:21,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 21:43:21,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:43:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 21:43:21,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=436, Unknown=3, NotChecked=42, Total=552 [2022-12-13 21:43:21,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 420 [2022-12-13 21:43:21,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 132 transitions, 1026 flow. Second operand has 24 states, 24 states have (on average 150.41666666666666) internal successors, (3610), 24 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:43:21,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:43:21,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 420 [2022-12-13 21:43:21,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:04,861 INFO L130 PetriNetUnfolder]: 225793/309835 cut-off events. [2022-12-13 21:44:04,861 INFO L131 PetriNetUnfolder]: For 1068594/1068612 co-relation queries the response was YES. [2022-12-13 21:44:06,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250248 conditions, 309835 events. 225793/309835 cut-off events. For 1068594/1068612 co-relation queries the response was YES. Maximal size of possible extension queue 9019. Compared 2270139 event pairs, 181694 based on Foata normal form. 0/248063 useless extension candidates. Maximal degree in co-relation 1250212. Up to 261159 conditions per place. [2022-12-13 21:44:07,507 INFO L137 encePairwiseOnDemand]: 412/420 looper letters, 226 selfloop transitions, 13 changer transitions 0/244 dead transitions. [2022-12-13 21:44:07,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 244 transitions, 2277 flow [2022-12-13 21:44:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:44:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:44:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1451 transitions. [2022-12-13 21:44:07,510 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38386243386243385 [2022-12-13 21:44:07,510 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1451 transitions. [2022-12-13 21:44:07,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1451 transitions. [2022-12-13 21:44:07,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:44:07,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1451 transitions. [2022-12-13 21:44:07,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.22222222222223) internal successors, (1451), 9 states have internal predecessors, (1451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:07,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 420.0) internal successors, (4200), 10 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:07,514 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 420.0) internal successors, (4200), 10 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:07,514 INFO L175 Difference]: Start difference. First operand has 130 places, 132 transitions, 1026 flow. Second operand 9 states and 1451 transitions. [2022-12-13 21:44:07,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 244 transitions, 2277 flow [2022-12-13 21:44:12,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 244 transitions, 2248 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 21:44:12,605 INFO L231 Difference]: Finished difference. Result has 138 places, 138 transitions, 1095 flow [2022-12-13 21:44:12,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1095, PETRI_PLACES=138, PETRI_TRANSITIONS=138} [2022-12-13 21:44:12,605 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 66 predicate places. [2022-12-13 21:44:12,606 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 138 transitions, 1095 flow [2022-12-13 21:44:12,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 150.41666666666666) internal successors, (3610), 24 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:12,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:44:12,606 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:44:12,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 21:44:12,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 21:44:12,808 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:44:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:44:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1860559623, now seen corresponding path program 1 times [2022-12-13 21:44:12,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:44:12,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675279103] [2022-12-13 21:44:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:12,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:44:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:13,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:44:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675279103] [2022-12-13 21:44:13,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675279103] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:44:13,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816682008] [2022-12-13 21:44:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:44:13,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:44:13,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:44:13,188 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:44:13,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 21:44:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:44:13,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 21:44:13,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:44:13,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:44:13,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:13,362 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 16 treesize of output 18 [2022-12-13 21:44:13,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:44:13,395 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 16 treesize of output 18 [2022-12-13 21:44:13,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:44:13,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:44:13,503 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_751 (Array Int Int)) (v_ArrVal_752 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_751) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_752) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 8 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296)) is different from false [2022-12-13 21:44:13,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:44:13,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-12-13 21:44:13,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:44:13,516 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 141 treesize of output 131 [2022-12-13 21:44:13,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 110 [2022-12-13 21:44:13,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 94 [2022-12-13 21:44:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 21:44:13,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816682008] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:44:13,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:44:13,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-12-13 21:44:13,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318724631] [2022-12-13 21:44:13,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:44:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 21:44:13,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:44:13,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 21:44:13,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=434, Unknown=5, NotChecked=42, Total=552 [2022-12-13 21:44:13,660 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 420 [2022-12-13 21:44:13,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 138 transitions, 1095 flow. Second operand has 24 states, 24 states have (on average 150.41666666666666) internal successors, (3610), 24 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:44:13,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:44:13,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 420 [2022-12-13 21:44:13,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:44:58,456 INFO L130 PetriNetUnfolder]: 225781/309815 cut-off events. [2022-12-13 21:44:58,457 INFO L131 PetriNetUnfolder]: For 1006493/1006511 co-relation queries the response was YES. [2022-12-13 21:45:00,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1241402 conditions, 309815 events. 225781/309815 cut-off events. For 1006493/1006511 co-relation queries the response was YES. Maximal size of possible extension queue 9015. Compared 2269950 event pairs, 181690 based on Foata normal form. 8/248051 useless extension candidates. Maximal degree in co-relation 1241363. Up to 261155 conditions per place. [2022-12-13 21:45:01,414 INFO L137 encePairwiseOnDemand]: 413/420 looper letters, 226 selfloop transitions, 12 changer transitions 0/243 dead transitions. [2022-12-13 21:45:01,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 243 transitions, 2282 flow [2022-12-13 21:45:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:45:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 21:45:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1450 transitions. [2022-12-13 21:45:01,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2022-12-13 21:45:01,417 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1450 transitions. [2022-12-13 21:45:01,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1450 transitions. [2022-12-13 21:45:01,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:45:01,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1450 transitions. [2022-12-13 21:45:01,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.11111111111111) internal successors, (1450), 9 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:01,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 420.0) internal successors, (4200), 10 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:01,422 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 420.0) internal successors, (4200), 10 states have internal predecessors, (4200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:01,422 INFO L175 Difference]: Start difference. First operand has 138 places, 138 transitions, 1095 flow. Second operand 9 states and 1450 transitions. [2022-12-13 21:45:01,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 243 transitions, 2282 flow [2022-12-13 21:45:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 243 transitions, 2255 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-12-13 21:45:07,117 INFO L231 Difference]: Finished difference. Result has 141 places, 137 transitions, 1077 flow [2022-12-13 21:45:07,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=420, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1077, PETRI_PLACES=141, PETRI_TRANSITIONS=137} [2022-12-13 21:45:07,118 INFO L288 CegarLoopForPetriNet]: 72 programPoint places, 69 predicate places. [2022-12-13 21:45:07,118 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 137 transitions, 1077 flow [2022-12-13 21:45:07,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 150.41666666666666) internal successors, (3610), 24 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:07,118 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:45:07,118 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:45:07,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 21:45:07,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 21:45:07,319 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2022-12-13 21:45:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:45:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1380350097, now seen corresponding path program 1 times [2022-12-13 21:45:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:45:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097401298] [2022-12-13 21:45:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:07,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:45:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:07,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:45:07,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097401298] [2022-12-13 21:45:07,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097401298] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:45:07,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524675816] [2022-12-13 21:45:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:45:07,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:45:07,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:45:07,478 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:45:07,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d7f688-c543-41c9-9b3f-86ee6287f7aa/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 21:45:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:45:07,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 21:45:07,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:45:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:07,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:45:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:45:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524675816] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:45:07,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:45:07,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-12-13 21:45:07,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390443729] [2022-12-13 21:45:07,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:45:07,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 21:45:07,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:45:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 21:45:07,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-12-13 21:45:07,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 420 [2022-12-13 21:45:07,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 137 transitions, 1077 flow. Second operand has 17 states, 17 states have (on average 169.58823529411765) internal successors, (2883), 17 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:45:07,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:45:07,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 420 [2022-12-13 21:45:07,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand