./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-inc.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_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/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_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/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_516ef1b6-921a-4c08-ad45-bc9400796a3a/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 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 11:08:31,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:08:31,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:08:31,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:08:31,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:08:31,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:08:31,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:08:31,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:08:31,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:08:31,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:08:31,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:08:31,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:08:31,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:08:31,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:08:31,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:08:31,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:08:31,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:08:31,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:08:31,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:08:31,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:08:31,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:08:31,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:08:31,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:08:31,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:08:31,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:08:31,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:08:31,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:08:31,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:08:31,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:08:31,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:08:31,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:08:31,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:08:31,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:08:31,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:08:31,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:08:31,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:08:31,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:08:31,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:08:31,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:08:31,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:08:31,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:08:31,987 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 11:08:32,000 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:08:32,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:08:32,001 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:08:32,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:08:32,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:08:32,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:08:32,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:08:32,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:08:32,002 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:08:32,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:08:32,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:08:32,002 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 11:08:32,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:08:32,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:08:32,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:08:32,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:08:32,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:08:32,005 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:08:32,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:08:32,005 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:08:32,005 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_516ef1b6-921a-4c08-ad45-bc9400796a3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24c46cfa0dbb54d68ea1c1d9e6e82d14a582b1d00782b6decedd8126f489ee67 [2022-12-13 11:08:32,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:08:32,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:08:32,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:08:32,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:08:32,218 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:08:32,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2022-12-13 11:08:34,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:08:34,923 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:08:34,923 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c [2022-12-13 11:08:34,928 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/data/7a298c15a/ade29a06202c4096869c7836edd24602/FLAGebbf53070 [2022-12-13 11:08:35,304 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/data/7a298c15a/ade29a06202c4096869c7836edd24602 [2022-12-13 11:08:35,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:08:35,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:08:35,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:08:35,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:08:35,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:08:35,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48419a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35, skipping insertion in model container [2022-12-13 11:08:35,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:08:35,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:08:35,441 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,442 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,443 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,460 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_516ef1b6-921a-4c08-ad45-bc9400796a3a/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-12-13 11:08:35,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:08:35,471 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:08:35,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:08:35,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:08:35,491 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_516ef1b6-921a-4c08-ad45-bc9400796a3a/sv-benchmarks/c/weaver/popl20-min-max-inc.wvr.c[3018,3031] [2022-12-13 11:08:35,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:08:35,504 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:08:35,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35 WrapperNode [2022-12-13 11:08:35,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:08:35,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:08:35,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:08:35,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:08:35,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,532 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2022-12-13 11:08:35,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:08:35,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:08:35,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:08:35,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:08:35,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,551 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:08:35,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:08:35,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:08:35,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:08:35,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (1/1) ... [2022-12-13 11:08:35,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:08:35,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:35,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:08:35,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:08:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:08:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:08:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:08:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 11:08:35,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 11:08:35,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 11:08:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 11:08:35,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 11:08:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 11:08:35,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 11:08:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 11:08:35,614 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 11:08:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:08:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:08:35,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:08:35,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 11:08:35,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:08:35,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:08:35,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:08:35,616 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 11:08:35,711 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:08:35,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:08:36,008 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:08:36,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:08:36,107 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 11:08:36,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:08:36 BoogieIcfgContainer [2022-12-13 11:08:36,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:08:36,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:08:36,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:08:36,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:08:36,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:08:35" (1/3) ... [2022-12-13 11:08:36,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3a355b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:08:36, skipping insertion in model container [2022-12-13 11:08:36,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:08:35" (2/3) ... [2022-12-13 11:08:36,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3a355b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:08:36, skipping insertion in model container [2022-12-13 11:08:36,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:08:36" (3/3) ... [2022-12-13 11:08:36,118 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2022-12-13 11:08:36,126 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 11:08:36,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:08:36,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 11:08:36,136 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:08:36,210 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 11:08:36,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 191 transitions, 414 flow [2022-12-13 11:08:36,340 INFO L130 PetriNetUnfolder]: 12/187 cut-off events. [2022-12-13 11:08:36,340 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 11:08:36,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 187 events. 12/187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 204 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-12-13 11:08:36,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 191 transitions, 414 flow [2022-12-13 11:08:36,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 164 transitions, 349 flow [2022-12-13 11:08:36,357 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 11:08:36,368 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 164 transitions, 349 flow [2022-12-13 11:08:36,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 164 transitions, 349 flow [2022-12-13 11:08:36,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 164 transitions, 349 flow [2022-12-13 11:08:36,412 INFO L130 PetriNetUnfolder]: 11/164 cut-off events. [2022-12-13 11:08:36,413 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 11:08:36,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 164 events. 11/164 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 202 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-12-13 11:08:36,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 3864 [2022-12-13 11:08:42,814 INFO L134 LiptonReduction]: Checked pairs total: 5812 [2022-12-13 11:08:42,814 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-12-13 11:08:42,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:08:42,835 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;@27b24b58, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:08:42,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 11:08:42,838 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 11:08:42,838 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:08:42,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:08:42,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 11:08:42,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:08:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash 25312, now seen corresponding path program 1 times [2022-12-13 11:08:42,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:42,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966901581] [2022-12-13 11:08:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:42,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:43,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:43,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966901581] [2022-12-13 11:08:43,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966901581] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:43,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:08:43,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:08:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181417223] [2022-12-13 11:08:43,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:43,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:08:43,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:43,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:08:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:08:43,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 347 [2022-12-13 11:08:43,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:43,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:08:43,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 347 [2022-12-13 11:08:43,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:08:44,887 INFO L130 PetriNetUnfolder]: 14867/19013 cut-off events. [2022-12-13 11:08:44,887 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2022-12-13 11:08:44,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39302 conditions, 19013 events. 14867/19013 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 1232. Compared 96203 event pairs, 10390 based on Foata normal form. 0/8961 useless extension candidates. Maximal degree in co-relation 17376. Up to 9497 conditions per place. [2022-12-13 11:08:45,020 INFO L137 encePairwiseOnDemand]: 341/347 looper letters, 71 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2022-12-13 11:08:45,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 336 flow [2022-12-13 11:08:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:08:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:08:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2022-12-13 11:08:45,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5398655139289145 [2022-12-13 11:08:45,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2022-12-13 11:08:45,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2022-12-13 11:08:45,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:08:45,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2022-12-13 11:08:45,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:45,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:45,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:45,044 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 103 flow. Second operand 3 states and 562 transitions. [2022-12-13 11:08:45,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 336 flow [2022-12-13 11:08:45,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 310 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 11:08:45,114 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2022-12-13 11:08:45,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2022-12-13 11:08:45,118 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2022-12-13 11:08:45,119 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2022-12-13 11:08:45,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:45,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:08:45,119 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:08:45,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:08:45,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:08:45,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash 786083, now seen corresponding path program 1 times [2022-12-13 11:08:45,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:45,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323617526] [2022-12-13 11:08:45,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:45,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:45,197 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 11:08:45,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:45,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323617526] [2022-12-13 11:08:45,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323617526] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:45,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265162844] [2022-12-13 11:08:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:45,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:45,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:45,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:08:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:45,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:08:45,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:45,302 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 11:08:45,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:08:45,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265162844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:45,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:08:45,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 11:08:45,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261151390] [2022-12-13 11:08:45,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:45,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:08:45,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:08:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:08:45,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 347 [2022-12-13 11:08:45,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:45,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:08:45,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 347 [2022-12-13 11:08:45,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:08:46,893 INFO L130 PetriNetUnfolder]: 14867/19012 cut-off events. [2022-12-13 11:08:46,893 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:08:46,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38959 conditions, 19012 events. 14867/19012 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1189. Compared 95836 event pairs, 10390 based on Foata normal form. 0/8969 useless extension candidates. Maximal degree in co-relation 19477. Up to 9495 conditions per place. [2022-12-13 11:08:46,977 INFO L137 encePairwiseOnDemand]: 344/347 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-12-13 11:08:46,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 316 flow [2022-12-13 11:08:46,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:08:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:08:46,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2022-12-13 11:08:46,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5165706051873199 [2022-12-13 11:08:46,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2022-12-13 11:08:46,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2022-12-13 11:08:46,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:08:46,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2022-12-13 11:08:46,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:46,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 347.0) internal successors, (1735), 5 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:46,987 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 347.0) internal successors, (1735), 5 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:46,987 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 4 states and 717 transitions. [2022-12-13 11:08:46,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 73 transitions, 316 flow [2022-12-13 11:08:46,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 73 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:08:46,989 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 98 flow [2022-12-13 11:08:46,989 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-12-13 11:08:46,989 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2022-12-13 11:08:46,990 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 98 flow [2022-12-13 11:08:46,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:46,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:08:46,990 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:08:46,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:08:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:47,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:08:47,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:47,192 INFO L85 PathProgramCache]: Analyzing trace with hash 786104, now seen corresponding path program 1 times [2022-12-13 11:08:47,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:47,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384670333] [2022-12-13 11:08:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:47,250 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 11:08:47,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:47,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384670333] [2022-12-13 11:08:47,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384670333] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:47,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617276371] [2022-12-13 11:08:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:47,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:47,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:47,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:08:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:47,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:08:47,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:47,326 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 11:08:47,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:08:47,342 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 11:08:47,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617276371] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:08:47,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:08:47,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 11:08:47,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124945646] [2022-12-13 11:08:47,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:08:47,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:08:47,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:47,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:08:47,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:08:47,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 347 [2022-12-13 11:08:47,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 98 flow. Second operand has 7 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:47,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:08:47,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 347 [2022-12-13 11:08:47,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:08:50,693 INFO L130 PetriNetUnfolder]: 37166/47527 cut-off events. [2022-12-13 11:08:50,693 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:08:50,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97382 conditions, 47527 events. 37166/47527 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 261702 event pairs, 25975 based on Foata normal form. 0/22430 useless extension candidates. Maximal degree in co-relation 77899. Up to 9496 conditions per place. [2022-12-13 11:08:50,837 INFO L137 encePairwiseOnDemand]: 344/347 looper letters, 172 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2022-12-13 11:08:50,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 178 transitions, 768 flow [2022-12-13 11:08:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:08:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:08:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1146 transitions. [2022-12-13 11:08:50,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5504322766570605 [2022-12-13 11:08:50,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1146 transitions. [2022-12-13 11:08:50,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1146 transitions. [2022-12-13 11:08:50,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:08:50,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1146 transitions. [2022-12-13 11:08:50,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:50,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:50,845 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 347.0) internal successors, (2429), 7 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:50,845 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 98 flow. Second operand 6 states and 1146 transitions. [2022-12-13 11:08:50,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 178 transitions, 768 flow [2022-12-13 11:08:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 178 transitions, 765 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:08:50,847 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 131 flow [2022-12-13 11:08:50,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2022-12-13 11:08:50,847 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2022-12-13 11:08:50,847 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 131 flow [2022-12-13 11:08:50,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:50,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:08:50,848 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 11:08:50,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:08:51,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:51,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:08:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1940924299, now seen corresponding path program 1 times [2022-12-13 11:08:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:51,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794786118] [2022-12-13 11:08:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:51,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:08:51,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794786118] [2022-12-13 11:08:51,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794786118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:51,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:08:51,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:08:51,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703052710] [2022-12-13 11:08:51,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:51,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:08:51,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:08:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:08:51,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2022-12-13 11:08:51,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:51,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:08:51,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2022-12-13 11:08:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:08:55,640 INFO L130 PetriNetUnfolder]: 52566/67237 cut-off events. [2022-12-13 11:08:55,640 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 11:08:55,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137636 conditions, 67237 events. 52566/67237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3648. Compared 398598 event pairs, 26045 based on Foata normal form. 0/31762 useless extension candidates. Maximal degree in co-relation 110101. Up to 47688 conditions per place. [2022-12-13 11:08:55,911 INFO L137 encePairwiseOnDemand]: 343/347 looper letters, 67 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2022-12-13 11:08:55,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 332 flow [2022-12-13 11:08:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:08:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:08:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 553 transitions. [2022-12-13 11:08:55,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5312199807877042 [2022-12-13 11:08:55,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 553 transitions. [2022-12-13 11:08:55,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 553 transitions. [2022-12-13 11:08:55,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:08:55,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 553 transitions. [2022-12-13 11:08:55,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.33333333333334) internal successors, (553), 3 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:55,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:55,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:55,916 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 131 flow. Second operand 3 states and 553 transitions. [2022-12-13 11:08:55,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 332 flow [2022-12-13 11:08:55,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 70 transitions, 324 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 11:08:55,918 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 137 flow [2022-12-13 11:08:55,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2022-12-13 11:08:55,918 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2022-12-13 11:08:55,918 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 137 flow [2022-12-13 11:08:55,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:55,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:08:55,919 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 11:08:55,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:08:55,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:08:55,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:08:55,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1944763317, now seen corresponding path program 2 times [2022-12-13 11:08:55,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:08:55,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379744732] [2022-12-13 11:08:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:08:55,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:08:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:08:56,019 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 11:08:56,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:08:56,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379744732] [2022-12-13 11:08:56,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379744732] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:08:56,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789519578] [2022-12-13 11:08:56,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 11:08:56,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:08:56,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:08:56,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:08:56,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:08:56,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 11:08:56,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 11:08:56,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 11:08:56,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:08:56,094 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 11:08:56,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:08:56,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789519578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:08:56,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:08:56,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 11:08:56,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867634333] [2022-12-13 11:08:56,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:08:56,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:08:56,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:08:56,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:08:56,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:08:56,105 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2022-12-13 11:08:56,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:08:56,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:08:56,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2022-12-13 11:08:56,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:00,273 INFO L130 PetriNetUnfolder]: 52366/67036 cut-off events. [2022-12-13 11:09:00,273 INFO L131 PetriNetUnfolder]: For 7438/7438 co-relation queries the response was YES. [2022-12-13 11:09:00,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146198 conditions, 67036 events. 52366/67036 cut-off events. For 7438/7438 co-relation queries the response was YES. Maximal size of possible extension queue 3648. Compared 389657 event pairs, 37045 based on Foata normal form. 1/34687 useless extension candidates. Maximal degree in co-relation 116948. Up to 66976 conditions per place. [2022-12-13 11:09:00,563 INFO L137 encePairwiseOnDemand]: 345/347 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-12-13 11:09:00,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 209 flow [2022-12-13 11:09:00,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:09:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-12-13 11:09:00,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5024015369836695 [2022-12-13 11:09:00,565 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-12-13 11:09:00,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-12-13 11:09:00,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:00,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-12-13 11:09:00,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:00,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:00,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:00,569 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 137 flow. Second operand 3 states and 523 transitions. [2022-12-13 11:09:00,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 209 flow [2022-12-13 11:09:00,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 197 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 11:09:00,578 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 117 flow [2022-12-13 11:09:00,578 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2022-12-13 11:09:00,579 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2022-12-13 11:09:00,579 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 117 flow [2022-12-13 11:09:00,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:00,579 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:00,580 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:00,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:09:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:00,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:09:00,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:00,781 INFO L85 PathProgramCache]: Analyzing trace with hash 39111928, now seen corresponding path program 1 times [2022-12-13 11:09:00,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:00,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050896613] [2022-12-13 11:09:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:00,904 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 11:09:00,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:00,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050896613] [2022-12-13 11:09:00,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050896613] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:00,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849601275] [2022-12-13 11:09:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:00,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:00,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:00,907 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:00,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:09:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:00,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 11:09:00,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:00,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:09:00,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849601275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:01,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:09:01,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 11:09:01,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808514747] [2022-12-13 11:09:01,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:01,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:09:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:09:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:01,017 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 347 [2022-12-13 11:09:01,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:01,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:01,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 347 [2022-12-13 11:09:01,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:04,939 INFO L130 PetriNetUnfolder]: 41893/53630 cut-off events. [2022-12-13 11:09:04,940 INFO L131 PetriNetUnfolder]: For 3556/3556 co-relation queries the response was YES. [2022-12-13 11:09:04,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115757 conditions, 53630 events. 41893/53630 cut-off events. For 3556/3556 co-relation queries the response was YES. Maximal size of possible extension queue 2962. Compared 305271 event pairs, 29636 based on Foata normal form. 1/27751 useless extension candidates. Maximal degree in co-relation 115748. Up to 53582 conditions per place. [2022-12-13 11:09:05,111 INFO L137 encePairwiseOnDemand]: 344/347 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 11:09:05,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 199 flow [2022-12-13 11:09:05,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:05,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:09:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2022-12-13 11:09:05,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49759846301633043 [2022-12-13 11:09:05,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2022-12-13 11:09:05,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2022-12-13 11:09:05,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:05,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2022-12-13 11:09:05,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:05,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:05,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:05,115 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 117 flow. Second operand 3 states and 518 transitions. [2022-12-13 11:09:05,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 199 flow [2022-12-13 11:09:05,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 196 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:05,118 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 122 flow [2022-12-13 11:09:05,118 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2022-12-13 11:09:05,119 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2022-12-13 11:09:05,119 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 122 flow [2022-12-13 11:09:05,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:05,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:05,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:05,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:09:05,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 11:09:05,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:09:05,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:05,321 INFO L85 PathProgramCache]: Analyzing trace with hash 487789333, now seen corresponding path program 1 times [2022-12-13 11:09:05,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:05,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769693795] [2022-12-13 11:09:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:05,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:05,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:05,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769693795] [2022-12-13 11:09:05,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769693795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:05,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791393962] [2022-12-13 11:09:05,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:05,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:05,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:05,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:05,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:09:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:05,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:09:05,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:05,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:05,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791393962] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:05,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:05,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 11:09:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154702057] [2022-12-13 11:09:05,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:05,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2022-12-13 11:09:05,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:05,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:05,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2022-12-13 11:09:05,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:12,236 INFO L130 PetriNetUnfolder]: 82205/104286 cut-off events. [2022-12-13 11:09:12,236 INFO L131 PetriNetUnfolder]: For 2388/2388 co-relation queries the response was YES. [2022-12-13 11:09:12,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226252 conditions, 104286 events. 82205/104286 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 4790. Compared 637080 event pairs, 17532 based on Foata normal form. 0/53810 useless extension candidates. Maximal degree in co-relation 226241. Up to 32479 conditions per place. [2022-12-13 11:09:12,681 INFO L137 encePairwiseOnDemand]: 343/347 looper letters, 166 selfloop transitions, 9 changer transitions 0/176 dead transitions. [2022-12-13 11:09:12,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 176 transitions, 784 flow [2022-12-13 11:09:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:09:12,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:09:12,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1308 transitions. [2022-12-13 11:09:12,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5384932070811034 [2022-12-13 11:09:12,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1308 transitions. [2022-12-13 11:09:12,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1308 transitions. [2022-12-13 11:09:12,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:12,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1308 transitions. [2022-12-13 11:09:12,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 186.85714285714286) internal successors, (1308), 7 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:12,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:12,691 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:12,691 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 122 flow. Second operand 7 states and 1308 transitions. [2022-12-13 11:09:12,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 176 transitions, 784 flow [2022-12-13 11:09:12,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 176 transitions, 780 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:09:12,698 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 177 flow [2022-12-13 11:09:12,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=177, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2022-12-13 11:09:12,699 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2022-12-13 11:09:12,699 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 177 flow [2022-12-13 11:09:12,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 163.85714285714286) internal successors, (1147), 7 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:12,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:12,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:12,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:09:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:12,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:09:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash 487789334, now seen corresponding path program 1 times [2022-12-13 11:09:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:12,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139006115] [2022-12-13 11:09:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:12,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:12,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:12,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139006115] [2022-12-13 11:09:12,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139006115] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:12,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126054385] [2022-12-13 11:09:12,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:12,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:12,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:12,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:09:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:13,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:09:13,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:13,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:09:13,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126054385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:13,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:09:13,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 11:09:13,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219119004] [2022-12-13 11:09:13,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:13,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:09:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:09:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:09:13,060 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2022-12-13 11:09:13,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:13,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:13,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2022-12-13 11:09:13,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:19,634 INFO L130 PetriNetUnfolder]: 74189/95062 cut-off events. [2022-12-13 11:09:19,635 INFO L131 PetriNetUnfolder]: For 4840/4840 co-relation queries the response was YES. [2022-12-13 11:09:19,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217177 conditions, 95062 events. 74189/95062 cut-off events. For 4840/4840 co-relation queries the response was YES. Maximal size of possible extension queue 4398. Compared 598771 event pairs, 5388 based on Foata normal form. 2416/55422 useless extension candidates. Maximal degree in co-relation 217164. Up to 69384 conditions per place. [2022-12-13 11:09:20,021 INFO L137 encePairwiseOnDemand]: 344/347 looper letters, 88 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2022-12-13 11:09:20,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 435 flow [2022-12-13 11:09:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:09:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:09:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 732 transitions. [2022-12-13 11:09:20,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5273775216138329 [2022-12-13 11:09:20,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 732 transitions. [2022-12-13 11:09:20,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 732 transitions. [2022-12-13 11:09:20,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:20,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 732 transitions. [2022-12-13 11:09:20,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:20,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 347.0) internal successors, (1735), 5 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:20,026 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 347.0) internal successors, (1735), 5 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:20,026 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 177 flow. Second operand 4 states and 732 transitions. [2022-12-13 11:09:20,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 435 flow [2022-12-13 11:09:20,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 427 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:20,783 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 146 flow [2022-12-13 11:09:20,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2022-12-13 11:09:20,784 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2022-12-13 11:09:20,784 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 146 flow [2022-12-13 11:09:20,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:20,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:20,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:20,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 11:09:20,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 11:09:20,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:09:20,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:20,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1882187311, now seen corresponding path program 1 times [2022-12-13 11:09:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:20,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842465578] [2022-12-13 11:09:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:20,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:21,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:21,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842465578] [2022-12-13 11:09:21,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842465578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:09:21,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:09:21,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:09:21,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900547128] [2022-12-13 11:09:21,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:09:21,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:09:21,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:21,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:09:21,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:09:21,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2022-12-13 11:09:21,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:21,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:21,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2022-12-13 11:09:21,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:29,602 INFO L130 PetriNetUnfolder]: 99869/128222 cut-off events. [2022-12-13 11:09:29,602 INFO L131 PetriNetUnfolder]: For 46580/46580 co-relation queries the response was YES. [2022-12-13 11:09:29,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289162 conditions, 128222 events. 99869/128222 cut-off events. For 46580/46580 co-relation queries the response was YES. Maximal size of possible extension queue 5762. Compared 816198 event pairs, 52972 based on Foata normal form. 0/71430 useless extension candidates. Maximal degree in co-relation 289148. Up to 94815 conditions per place. [2022-12-13 11:09:30,189 INFO L137 encePairwiseOnDemand]: 343/347 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-12-13 11:09:30,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 388 flow [2022-12-13 11:09:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:09:30,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:09:30,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2022-12-13 11:09:30,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.526416906820365 [2022-12-13 11:09:30,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2022-12-13 11:09:30,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2022-12-13 11:09:30,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:30,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2022-12-13 11:09:30,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:30,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:30,194 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:30,194 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 146 flow. Second operand 3 states and 548 transitions. [2022-12-13 11:09:30,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 388 flow [2022-12-13 11:09:30,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:09:30,254 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 157 flow [2022-12-13 11:09:30,255 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2022-12-13 11:09:30,255 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2022-12-13 11:09:30,255 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 157 flow [2022-12-13 11:09:30,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:30,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:30,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:30,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:09:30,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:09:30,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1786538004, now seen corresponding path program 1 times [2022-12-13 11:09:30,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:30,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38184054] [2022-12-13 11:09:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:30,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:30,544 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 11:09:30,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:30,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38184054] [2022-12-13 11:09:30,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38184054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:30,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410284634] [2022-12-13 11:09:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:30,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:30,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:30,546 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:30,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:09:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:30,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 11:09:30,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:30,686 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 11 treesize of output 7 [2022-12-13 11:09:30,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:09:30,728 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 11:09:30,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:09:30,762 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 11:09:30,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:09:30,792 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 11:09:30,818 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 11:09:30,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:30,887 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_427 (Array Int Int)) (v_ArrVal_426 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_426) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_427) c_~A~0.base) c_~A~0.offset) 2147483650))) is different from false [2022-12-13 11:09:32,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:09:32,966 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 30 treesize of output 31 [2022-12-13 11:09:32,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:09:32,976 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 139 [2022-12-13 11:09:32,983 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 124 treesize of output 116 [2022-12-13 11:09:32,988 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 116 treesize of output 112 [2022-12-13 11:09:32,994 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 56 treesize of output 54 [2022-12-13 11:09:33,085 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 11:09:33,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410284634] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:33,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:33,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2022-12-13 11:09:33,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792021509] [2022-12-13 11:09:33,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:33,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:09:33,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:09:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=239, Unknown=5, NotChecked=32, Total=342 [2022-12-13 11:09:35,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 11:09:37,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 11:09:37,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 347 [2022-12-13 11:09:37,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 157 flow. Second operand has 19 states, 19 states have (on average 129.52631578947367) internal successors, (2461), 19 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:37,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:37,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 347 [2022-12-13 11:09:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:09:46,666 INFO L130 PetriNetUnfolder]: 100589/137998 cut-off events. [2022-12-13 11:09:46,666 INFO L131 PetriNetUnfolder]: For 76312/76312 co-relation queries the response was YES. [2022-12-13 11:09:46,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343419 conditions, 137998 events. 100589/137998 cut-off events. For 76312/76312 co-relation queries the response was YES. Maximal size of possible extension queue 4154. Compared 926763 event pairs, 17820 based on Foata normal form. 0/100750 useless extension candidates. Maximal degree in co-relation 343404. Up to 92849 conditions per place. [2022-12-13 11:09:47,407 INFO L137 encePairwiseOnDemand]: 338/347 looper letters, 115 selfloop transitions, 12 changer transitions 0/127 dead transitions. [2022-12-13 11:09:47,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 127 transitions, 751 flow [2022-12-13 11:09:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:09:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 11:09:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1126 transitions. [2022-12-13 11:09:47,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40561959654178675 [2022-12-13 11:09:47,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1126 transitions. [2022-12-13 11:09:47,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1126 transitions. [2022-12-13 11:09:47,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:09:47,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1126 transitions. [2022-12-13 11:09:47,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:47,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 347.0) internal successors, (3123), 9 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:47,416 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 347.0) internal successors, (3123), 9 states have internal predecessors, (3123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:47,416 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 157 flow. Second operand 8 states and 1126 transitions. [2022-12-13 11:09:47,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 127 transitions, 751 flow [2022-12-13 11:09:47,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 127 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:09:47,492 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 206 flow [2022-12-13 11:09:47,492 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2022-12-13 11:09:47,493 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2022-12-13 11:09:47,493 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 206 flow [2022-12-13 11:09:47,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 129.52631578947367) internal successors, (2461), 19 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:47,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:09:47,494 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:09:47,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:09:47,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 11:09:47,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:09:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:09:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1781737041, now seen corresponding path program 1 times [2022-12-13 11:09:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:09:47,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769048521] [2022-12-13 11:09:47,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:47,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:09:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:09:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769048521] [2022-12-13 11:09:47,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769048521] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:09:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158517722] [2022-12-13 11:09:47,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:09:47,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:09:47,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:09:47,785 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:09:47,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:09:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:09:47,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 11:09:47,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:09:47,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:47,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:09:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:09:47,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158517722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:09:47,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:09:47,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 11:09:47,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814126172] [2022-12-13 11:09:47,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:09:47,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:09:47,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:09:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:09:47,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:09:47,918 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2022-12-13 11:09:47,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:09:47,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:09:47,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2022-12-13 11:09:47,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:10:05,727 INFO L130 PetriNetUnfolder]: 182393/248714 cut-off events. [2022-12-13 11:10:05,727 INFO L131 PetriNetUnfolder]: For 130122/131418 co-relation queries the response was YES. [2022-12-13 11:10:06,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661567 conditions, 248714 events. 182393/248714 cut-off events. For 130122/131418 co-relation queries the response was YES. Maximal size of possible extension queue 6734. Compared 1778650 event pairs, 50260 based on Foata normal form. 1296/194150 useless extension candidates. Maximal degree in co-relation 661549. Up to 82383 conditions per place. [2022-12-13 11:10:07,042 INFO L137 encePairwiseOnDemand]: 343/347 looper letters, 206 selfloop transitions, 9 changer transitions 0/217 dead transitions. [2022-12-13 11:10:07,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 217 transitions, 1293 flow [2022-12-13 11:10:07,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:10:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:10:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1294 transitions. [2022-12-13 11:10:07,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5327295183202965 [2022-12-13 11:10:07,046 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1294 transitions. [2022-12-13 11:10:07,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1294 transitions. [2022-12-13 11:10:07,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:10:07,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1294 transitions. [2022-12-13 11:10:07,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 184.85714285714286) internal successors, (1294), 7 states have internal predecessors, (1294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:07,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:07,052 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:07,052 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 206 flow. Second operand 7 states and 1294 transitions. [2022-12-13 11:10:07,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 217 transitions, 1293 flow [2022-12-13 11:10:07,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 217 transitions, 1287 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 11:10:07,235 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 259 flow [2022-12-13 11:10:07,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=259, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2022-12-13 11:10:07,235 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 24 predicate places. [2022-12-13 11:10:07,235 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 259 flow [2022-12-13 11:10:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.14285714285714) internal successors, (1149), 7 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:07,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:10:07,236 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:10:07,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:10:07,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:10:07,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:10:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:10:07,439 INFO L85 PathProgramCache]: Analyzing trace with hash -600725839, now seen corresponding path program 1 times [2022-12-13 11:10:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:10:07,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795195412] [2022-12-13 11:10:07,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:10:07,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:10:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:10:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 11:10:07,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:10:07,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795195412] [2022-12-13 11:10:07,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795195412] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:10:07,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812064709] [2022-12-13 11:10:07,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:10:07,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:10:07,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:10:07,523 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:10:07,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:10:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:10:07,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:10:07,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:10:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:10:07,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:10:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:10:07,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812064709] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:10:07,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:10:07,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2022-12-13 11:10:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980756210] [2022-12-13 11:10:07,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:10:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:10:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:10:07,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:10:07,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:10:08,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 347 [2022-12-13 11:10:08,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 259 flow. Second operand has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:08,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:10:08,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 347 [2022-12-13 11:10:08,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:10:23,972 INFO L130 PetriNetUnfolder]: 131113/183832 cut-off events. [2022-12-13 11:10:23,972 INFO L131 PetriNetUnfolder]: For 112132/113136 co-relation queries the response was YES. [2022-12-13 11:10:24,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521815 conditions, 183832 events. 131113/183832 cut-off events. For 112132/113136 co-relation queries the response was YES. Maximal size of possible extension queue 5159. Compared 1356629 event pairs, 16045 based on Foata normal form. 9571/167397 useless extension candidates. Maximal degree in co-relation 521795. Up to 51111 conditions per place. [2022-12-13 11:10:24,999 INFO L137 encePairwiseOnDemand]: 338/347 looper letters, 327 selfloop transitions, 16 changer transitions 0/345 dead transitions. [2022-12-13 11:10:24,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 345 transitions, 2069 flow [2022-12-13 11:10:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 11:10:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 11:10:25,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2387 transitions. [2022-12-13 11:10:25,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49135446685878964 [2022-12-13 11:10:25,004 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2387 transitions. [2022-12-13 11:10:25,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2387 transitions. [2022-12-13 11:10:25,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:10:25,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2387 transitions. [2022-12-13 11:10:25,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 170.5) internal successors, (2387), 14 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:25,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 347.0) internal successors, (5205), 15 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:25,013 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 347.0) internal successors, (5205), 15 states have internal predecessors, (5205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:25,013 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 259 flow. Second operand 14 states and 2387 transitions. [2022-12-13 11:10:25,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 345 transitions, 2069 flow [2022-12-13 11:10:32,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 345 transitions, 2059 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 11:10:32,877 INFO L231 Difference]: Finished difference. Result has 91 places, 63 transitions, 354 flow [2022-12-13 11:10:32,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=354, PETRI_PLACES=91, PETRI_TRANSITIONS=63} [2022-12-13 11:10:32,878 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 41 predicate places. [2022-12-13 11:10:32,878 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 63 transitions, 354 flow [2022-12-13 11:10:32,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 154.0) internal successors, (2156), 14 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:32,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:10:32,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:10:32,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:10:33,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 11:10:33,081 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:10:33,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:10:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash -451893457, now seen corresponding path program 1 times [2022-12-13 11:10:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:10:33,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106348925] [2022-12-13 11:10:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:10:33,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:10:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:10:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:10:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:10:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106348925] [2022-12-13 11:10:33,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106348925] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:10:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487479905] [2022-12-13 11:10:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:10:33,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:10:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:10:33,209 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:10:33,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:10:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:10:33,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 11:10:33,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:10:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:10:33,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:10:33,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:10:33,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487479905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:10:33,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:10:33,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-12-13 11:10:33,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714355247] [2022-12-13 11:10:33,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:10:33,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 11:10:33,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:10:33,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 11:10:33,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-12-13 11:10:33,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 347 [2022-12-13 11:10:33,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 63 transitions, 354 flow. Second operand has 14 states, 14 states have (on average 153.57142857142858) internal successors, (2150), 14 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:33,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:10:33,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 347 [2022-12-13 11:10:33,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:10:50,034 INFO L130 PetriNetUnfolder]: 137686/190855 cut-off events. [2022-12-13 11:10:50,034 INFO L131 PetriNetUnfolder]: For 452030/452030 co-relation queries the response was YES. [2022-12-13 11:10:50,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603747 conditions, 190855 events. 137686/190855 cut-off events. For 452030/452030 co-relation queries the response was YES. Maximal size of possible extension queue 5110. Compared 1338167 event pairs, 93674 based on Foata normal form. 2376/172509 useless extension candidates. Maximal degree in co-relation 603718. Up to 147839 conditions per place. [2022-12-13 11:10:51,296 INFO L137 encePairwiseOnDemand]: 339/347 looper letters, 182 selfloop transitions, 10 changer transitions 2/194 dead transitions. [2022-12-13 11:10:51,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 194 transitions, 1314 flow [2022-12-13 11:10:51,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:10:51,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 11:10:51,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1511 transitions. [2022-12-13 11:10:51,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48382965097662506 [2022-12-13 11:10:51,300 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1511 transitions. [2022-12-13 11:10:51,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1511 transitions. [2022-12-13 11:10:51,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 11:10:51,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1511 transitions. [2022-12-13 11:10:51,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 167.88888888888889) internal successors, (1511), 9 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:51,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 347.0) internal successors, (3470), 10 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:51,307 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 347.0) internal successors, (3470), 10 states have internal predecessors, (3470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:51,307 INFO L175 Difference]: Start difference. First operand has 91 places, 63 transitions, 354 flow. Second operand 9 states and 1511 transitions. [2022-12-13 11:10:51,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 194 transitions, 1314 flow [2022-12-13 11:10:52,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 194 transitions, 1272 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 11:10:52,179 INFO L231 Difference]: Finished difference. Result has 98 places, 69 transitions, 409 flow [2022-12-13 11:10:52,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=409, PETRI_PLACES=98, PETRI_TRANSITIONS=69} [2022-12-13 11:10:52,180 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 48 predicate places. [2022-12-13 11:10:52,180 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 69 transitions, 409 flow [2022-12-13 11:10:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 153.57142857142858) internal successors, (2150), 14 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:10:52,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:10:52,180 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:10:52,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 11:10:52,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:10:52,382 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 11:10:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:10:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash -451894077, now seen corresponding path program 1 times [2022-12-13 11:10:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:10:52,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846320292] [2022-12-13 11:10:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:10:52,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:10:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:10:52,743 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 11:10:52,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:10:52,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846320292] [2022-12-13 11:10:52,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846320292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:10:52,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593520822] [2022-12-13 11:10:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:10:52,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:10:52,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:10:52,744 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:10:52,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_516ef1b6-921a-4c08-ad45-bc9400796a3a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 11:10:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:10:52,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 11:10:52,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:10:52,885 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 11 treesize of output 7 [2022-12-13 11:10:52,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:10:52,954 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 11:10:53,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:10:53,015 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 11:10:53,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:10:53,072 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 11:10:53,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 11:10:53,150 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 11:10:53,168 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 11:10:53,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:10:53,191 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_657 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_657) c_~A~0.base) (+ (* 4 |c_thread3Thread1of1ForFork0_~i~2#1|) c_~A~0.offset))))) is different from false [2022-12-13 11:10:53,237 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_656 (Array Int Int)) (v_ArrVal_657 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_656) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_657) c_~A~0.base) c_~A~0.offset)))) is different from false [2022-12-13 11:10:53,361 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:10:53,361 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 33 treesize of output 34 [2022-12-13 11:10:53,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 11:10:53,388 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 17539 treesize of output 17285 [2022-12-13 11:10:53,503 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 8635 treesize of output 8379 [2022-12-13 11:10:53,601 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 17014 treesize of output 16886 [2022-12-13 11:10:53,712 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 16886 treesize of output 16374 [2022-12-13 11:10:53,797 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 16374 treesize of output 15350