./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/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_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/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_99a2a601-ab5e-4c40-8c00-84f117eb4859/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 df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a --- 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 17:30:56,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:30:56,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:30:56,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:30:56,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:30:56,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:30:56,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:30:56,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:30:56,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:30:56,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:30:56,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:30:56,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:30:56,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:30:56,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:30:56,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:30:56,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:30:56,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:30:56,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:30:56,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:30:56,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:30:56,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:30:56,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:30:56,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:30:56,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:30:56,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:30:56,974 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:30:56,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:30:56,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:30:56,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:30:56,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:30:56,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:30:56,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:30:56,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:30:56,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:30:56,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:30:56,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:30:56,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:30:56,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:30:56,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:30:56,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:30:56,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:30:56,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 17:30:57,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:30:57,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:30:57,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:30:57,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:30:57,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:30:57,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:30:57,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:30:57,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:30:57,006 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:30:57,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:30:57,006 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:30:57,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:30:57,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:30:57,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:30:57,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:30:57,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:30:57,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:30:57,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:30:57,007 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 17:30:57,008 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:30:57,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:30:57,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:30:57,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:30:57,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:30:57,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:30:57,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:30:57,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:30:57,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:30:57,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:30:57,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:30:57,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:30:57,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:30:57,009 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:30:57,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:30:57,010 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:30:57,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:30:57,010 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:30:57,010 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_99a2a601-ab5e-4c40-8c00-84f117eb4859/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df820220e47314ad1ae7e5e69c959ff16aa366a463fd9290864972c0f85d142a [2022-12-13 17:30:57,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:30:57,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:30:57,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:30:57,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:30:57,207 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:30:57,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-12-13 17:30:59,820 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:30:59,956 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:30:59,956 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c [2022-12-13 17:30:59,962 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/data/6739f429f/ac842c0b59f745a8aa9ab4208b66f373/FLAG47af3fad1 [2022-12-13 17:30:59,975 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/data/6739f429f/ac842c0b59f745a8aa9ab4208b66f373 [2022-12-13 17:30:59,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:30:59,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:30:59,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:30:59,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:30:59,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:30:59,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:30:59" (1/1) ... [2022-12-13 17:30:59,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10604400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:30:59, skipping insertion in model container [2022-12-13 17:30:59,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:30:59" (1/1) ... [2022-12-13 17:30:59,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:31:00,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:31:00,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,154 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_99a2a601-ab5e-4c40-8c00-84f117eb4859/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-12-13 17:31:00,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:31:00,168 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:31:00,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 17:31:00,194 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 17:31:00,199 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_99a2a601-ab5e-4c40-8c00-84f117eb4859/sv-benchmarks/c/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-12-13 17:31:00,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:31:00,215 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:31:00,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00 WrapperNode [2022-12-13 17:31:00,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:31:00,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:31:00,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:31:00,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:31:00,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,254 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 349 [2022-12-13 17:31:00,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:31:00,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:31:00,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:31:00,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:31:00,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,266 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:31:00,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:31:00,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:31:00,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:31:00,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (1/1) ... [2022-12-13 17:31:00,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:31:00,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:31:00,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:31:00,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:31:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 17:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 17:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 17:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 17:31:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 17:31:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 17:31:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 17:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 17:31:00,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 17:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 17:31:00,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 17:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 17:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 17:31:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 17:31:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:31:00,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:31:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 17:31:00,354 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 17:31:00,448 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:31:00,449 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:31:00,888 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:31:01,190 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:31:01,190 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-13 17:31:01,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:31:01 BoogieIcfgContainer [2022-12-13 17:31:01,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:31:01,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:31:01,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:31:01,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:31:01,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:30:59" (1/3) ... [2022-12-13 17:31:01,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24019826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:31:01, skipping insertion in model container [2022-12-13 17:31:01,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:31:00" (2/3) ... [2022-12-13 17:31:01,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24019826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:31:01, skipping insertion in model container [2022-12-13 17:31:01,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:31:01" (3/3) ... [2022-12-13 17:31:01,199 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-12-13 17:31:01,206 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 17:31:01,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:31:01,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-12-13 17:31:01,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 17:31:01,351 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 17:31:01,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 262 transitions, 556 flow [2022-12-13 17:31:01,456 INFO L130 PetriNetUnfolder]: 18/258 cut-off events. [2022-12-13 17:31:01,456 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 17:31:01,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 258 events. 18/258 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 277 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2022-12-13 17:31:01,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 262 transitions, 556 flow [2022-12-13 17:31:01,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 231 places, 235 transitions, 491 flow [2022-12-13 17:31:01,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 17:31:01,477 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 231 places, 235 transitions, 491 flow [2022-12-13 17:31:01,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 231 places, 235 transitions, 491 flow [2022-12-13 17:31:01,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 231 places, 235 transitions, 491 flow [2022-12-13 17:31:01,516 INFO L130 PetriNetUnfolder]: 17/235 cut-off events. [2022-12-13 17:31:01,516 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 17:31:01,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 235 events. 17/235 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 276 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2022-12-13 17:31:01,523 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2022-12-13 17:31:16,025 INFO L134 LiptonReduction]: Checked pairs total: 7127 [2022-12-13 17:31:16,025 INFO L136 LiptonReduction]: Total number of compositions: 240 [2022-12-13 17:31:16,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:31:16,043 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;@fbef95b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:31:16,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-12-13 17:31:16,045 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 17:31:16,045 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:31:16,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:31:16,046 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 17:31:16,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:31:16,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:31:16,050 INFO L85 PathProgramCache]: Analyzing trace with hash 45321, now seen corresponding path program 1 times [2022-12-13 17:31:16,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:31:16,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673414600] [2022-12-13 17:31:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:16,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:31:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:16,269 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 17:31:16,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:31:16,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673414600] [2022-12-13 17:31:16,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673414600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:31:16,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:31:16,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:31:16,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931632759] [2022-12-13 17:31:16,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:31:16,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:31:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:31:16,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:31:16,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:31:16,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 502 [2022-12-13 17:31:16,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:31:16,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:31:16,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 502 [2022-12-13 17:31:16,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:31:26,645 INFO L130 PetriNetUnfolder]: 73025/90269 cut-off events. [2022-12-13 17:31:26,645 INFO L131 PetriNetUnfolder]: For 1182/1182 co-relation queries the response was YES. [2022-12-13 17:31:26,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181738 conditions, 90269 events. 73025/90269 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 7849. Compared 512392 event pairs, 46498 based on Foata normal form. 0/24087 useless extension candidates. Maximal degree in co-relation 80291. Up to 44273 conditions per place. [2022-12-13 17:31:27,206 INFO L137 encePairwiseOnDemand]: 486/502 looper letters, 89 selfloop transitions, 4 changer transitions 0/99 dead transitions. [2022-12-13 17:31:27,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2022-12-13 17:31:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:31:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:31:27,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 728 transitions. [2022-12-13 17:31:27,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48339973439575035 [2022-12-13 17:31:27,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 728 transitions. [2022-12-13 17:31:27,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 728 transitions. [2022-12-13 17:31:27,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:31:27,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 728 transitions. [2022-12-13 17:31:27,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 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 17:31:27,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:31:27,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:31:27,238 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 147 flow. Second operand 3 states and 728 transitions. [2022-12-13 17:31:27,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2022-12-13 17:31:27,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 17:31:27,803 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 154 flow [2022-12-13 17:31:27,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2022-12-13 17:31:27,807 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2022-12-13 17:31:27,807 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 154 flow [2022-12-13 17:31:27,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:31:27,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:31:27,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:31:27,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:31:27,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:31:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:31:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1407740, now seen corresponding path program 1 times [2022-12-13 17:31:27,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:31:27,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111055421] [2022-12-13 17:31:27,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:27,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:31:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:27,877 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 17:31:27,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:31:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111055421] [2022-12-13 17:31:27,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111055421] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:31:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852272793] [2022-12-13 17:31:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:27,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:27,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:31:27,879 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:31:27,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:31:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:27,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:31:27,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:31:27,999 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 17:31:27,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:31:28,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852272793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:31:28,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:31:28,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 17:31:28,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47062180] [2022-12-13 17:31:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:31:28,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:31:28,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:31:28,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:31:28,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:31:28,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 502 [2022-12-13 17:31:28,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 0 states have call successors, (0), 0 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 17:31:28,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:31:28,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 502 [2022-12-13 17:31:28,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:31:36,562 INFO L130 PetriNetUnfolder]: 73025/90267 cut-off events. [2022-12-13 17:31:36,563 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:31:36,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180467 conditions, 90267 events. 73025/90267 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7484. Compared 510120 event pairs, 46498 based on Foata normal form. 0/24091 useless extension candidates. Maximal degree in co-relation 90228. Up to 44270 conditions per place. [2022-12-13 17:31:36,987 INFO L137 encePairwiseOnDemand]: 496/502 looper letters, 87 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2022-12-13 17:31:36,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 418 flow [2022-12-13 17:31:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:31:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:31:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 913 transitions. [2022-12-13 17:31:36,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4546812749003984 [2022-12-13 17:31:36,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 913 transitions. [2022-12-13 17:31:36,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 913 transitions. [2022-12-13 17:31:36,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:31:36,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 913 transitions. [2022-12-13 17:31:36,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 228.25) internal successors, (913), 4 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 17:31:36,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 502.0) internal successors, (2510), 5 states have internal predecessors, (2510), 0 states have call successors, (0), 0 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 17:31:36,997 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 502.0) internal successors, (2510), 5 states have internal predecessors, (2510), 0 states have call successors, (0), 0 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 17:31:36,997 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 154 flow. Second operand 4 states and 913 transitions. [2022-12-13 17:31:36,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 418 flow [2022-12-13 17:31:36,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:31:36,999 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 146 flow [2022-12-13 17:31:36,999 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-12-13 17:31:37,000 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2022-12-13 17:31:37,000 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 146 flow [2022-12-13 17:31:37,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 0 states have call successors, (0), 0 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 17:31:37,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:31:37,001 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 17:31:37,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:31:37,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 17:31:37,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:31:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:31:37,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1407759, now seen corresponding path program 1 times [2022-12-13 17:31:37,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:31:37,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860576950] [2022-12-13 17:31:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:31:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:37,279 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 17:31:37,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:31:37,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860576950] [2022-12-13 17:31:37,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860576950] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:31:37,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951809848] [2022-12-13 17:31:37,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:37,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:31:37,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:31:37,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:31:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:37,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:31:37,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:31:37,371 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 17:31:37,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:31:37,383 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 17:31:37,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951809848] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:31:37,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:31:37,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 17:31:37,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241160433] [2022-12-13 17:31:37,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:31:37,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:31:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:31:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:31:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:31:37,429 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 502 [2022-12-13 17:31:37,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 0 states have call successors, (0), 0 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 17:31:37,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:31:37,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 502 [2022-12-13 17:31:37,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:31:57,352 INFO L130 PetriNetUnfolder]: 182570/225681 cut-off events. [2022-12-13 17:31:57,352 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 17:31:57,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451163 conditions, 225681 events. 182570/225681 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13114. Compared 1364524 event pairs, 116245 based on Foata normal form. 0/60829 useless extension candidates. Maximal degree in co-relation 360903. Up to 44271 conditions per place. [2022-12-13 17:31:58,413 INFO L137 encePairwiseOnDemand]: 496/502 looper letters, 210 selfloop transitions, 13 changer transitions 0/229 dead transitions. [2022-12-13 17:31:58,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 229 transitions, 994 flow [2022-12-13 17:31:58,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:31:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 17:31:58,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-12-13 17:31:58,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4843957503320053 [2022-12-13 17:31:58,419 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-12-13 17:31:58,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-12-13 17:31:58,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:31:58,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-12-13 17:31:58,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 0 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 17:31:58,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 502.0) internal successors, (3514), 7 states have internal predecessors, (3514), 0 states have call successors, (0), 0 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 17:31:58,433 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 502.0) internal successors, (3514), 7 states have internal predecessors, (3514), 0 states have call successors, (0), 0 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 17:31:58,433 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 146 flow. Second operand 6 states and 1459 transitions. [2022-12-13 17:31:58,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 229 transitions, 994 flow [2022-12-13 17:31:58,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 229 transitions, 986 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:31:58,438 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 237 flow [2022-12-13 17:31:58,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2022-12-13 17:31:58,439 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2022-12-13 17:31:58,439 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 237 flow [2022-12-13 17:31:58,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 0 states have call successors, (0), 0 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 17:31:58,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:31:58,441 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 17:31:58,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:31:58,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:58,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:31:58,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:31:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1008921124, now seen corresponding path program 2 times [2022-12-13 17:31:58,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:31:58,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349487829] [2022-12-13 17:31:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:31:58,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:31:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:31:58,760 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 17:31:58,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:31:58,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349487829] [2022-12-13 17:31:58,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349487829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:31:58,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797555836] [2022-12-13 17:31:58,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:31:58,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:31:58,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:31:58,762 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:31:58,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:31:58,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 17:31:58,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:31:58,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:31:58,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:31:58,870 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 17:31:58,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:31:58,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797555836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:31:58,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:31:58,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 17:31:58,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806233779] [2022-12-13 17:31:58,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:31:58,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:31:58,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:31:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:31:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:31:58,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 502 [2022-12-13 17:31:58,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 237 flow. Second operand has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 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 17:31:58,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:31:58,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 502 [2022-12-13 17:31:58,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:32:18,836 INFO L130 PetriNetUnfolder]: 182546/225632 cut-off events. [2022-12-13 17:32:18,836 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 17:32:19,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451137 conditions, 225632 events. 182546/225632 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15816. Compared 1378162 event pairs, 116245 based on Foata normal form. 1/59223 useless extension candidates. Maximal degree in co-relation 360865. Up to 221332 conditions per place. [2022-12-13 17:32:20,081 INFO L137 encePairwiseOnDemand]: 499/502 looper letters, 52 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2022-12-13 17:32:20,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 343 flow [2022-12-13 17:32:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:32:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:32:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2022-12-13 17:32:20,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4435590969455511 [2022-12-13 17:32:20,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2022-12-13 17:32:20,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2022-12-13 17:32:20,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:32:20,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2022-12-13 17:32:20,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 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 17:32:20,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:32:20,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:32:20,089 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 237 flow. Second operand 3 states and 668 transitions. [2022-12-13 17:32:20,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 343 flow [2022-12-13 17:32:20,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 324 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 17:32:20,092 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 220 flow [2022-12-13 17:32:20,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2022-12-13 17:32:20,093 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2022-12-13 17:32:20,093 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 220 flow [2022-12-13 17:32:20,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 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 17:32:20,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:32:20,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:32:20,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 17:32:20,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:20,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:32:20,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:20,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1001649059, now seen corresponding path program 1 times [2022-12-13 17:32:20,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:20,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403675509] [2022-12-13 17:32:20,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:20,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:20,371 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 17:32:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:20,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403675509] [2022-12-13 17:32:20,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403675509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:32:20,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:32:20,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:32:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798063871] [2022-12-13 17:32:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:32:20,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:32:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:20,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:32:20,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:32:20,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 502 [2022-12-13 17:32:20,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 17:32:20,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:32:20,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 502 [2022-12-13 17:32:20,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:32:46,761 INFO L130 PetriNetUnfolder]: 223416/282982 cut-off events. [2022-12-13 17:32:46,761 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 17:32:47,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569348 conditions, 282982 events. 223416/282982 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21076. Compared 1943318 event pairs, 62540 based on Foata normal form. 0/78887 useless extension candidates. Maximal degree in co-relation 569292. Up to 175196 conditions per place. [2022-12-13 17:32:48,310 INFO L137 encePairwiseOnDemand]: 498/502 looper letters, 93 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2022-12-13 17:32:48,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 101 transitions, 491 flow [2022-12-13 17:32:48,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:32:48,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:32:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2022-12-13 17:32:48,313 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4747675962815405 [2022-12-13 17:32:48,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2022-12-13 17:32:48,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2022-12-13 17:32:48,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:32:48,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2022-12-13 17:32:48,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 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 17:32:48,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:32:48,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:32:48,318 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 220 flow. Second operand 3 states and 715 transitions. [2022-12-13 17:32:48,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 101 transitions, 491 flow [2022-12-13 17:32:48,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 101 transitions, 479 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 17:32:48,320 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 222 flow [2022-12-13 17:32:48,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2022-12-13 17:32:48,321 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2022-12-13 17:32:48,321 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 222 flow [2022-12-13 17:32:48,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 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 17:32:48,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:32:48,321 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 17:32:48,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:32:48,322 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:32:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:48,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1001649061, now seen corresponding path program 1 times [2022-12-13 17:32:48,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:48,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690672277] [2022-12-13 17:32:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:48,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:48,414 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 17:32:48,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:48,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690672277] [2022-12-13 17:32:48,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690672277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:32:48,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:32:48,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:32:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287229647] [2022-12-13 17:32:48,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:32:48,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:32:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:32:48,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:32:48,459 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 502 [2022-12-13 17:32:48,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 17:32:48,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:32:48,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 502 [2022-12-13 17:32:48,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:33:17,085 INFO L130 PetriNetUnfolder]: 238731/304938 cut-off events. [2022-12-13 17:33:17,085 INFO L131 PetriNetUnfolder]: For 13219/13219 co-relation queries the response was YES. [2022-12-13 17:33:17,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638861 conditions, 304938 events. 238731/304938 cut-off events. For 13219/13219 co-relation queries the response was YES. Maximal size of possible extension queue 21713. Compared 2135865 event pairs, 176460 based on Foata normal form. 1525/105493 useless extension candidates. Maximal degree in co-relation 481498. Up to 280686 conditions per place. [2022-12-13 17:33:18,855 INFO L137 encePairwiseOnDemand]: 491/502 looper letters, 93 selfloop transitions, 3 changer transitions 0/102 dead transitions. [2022-12-13 17:33:18,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 524 flow [2022-12-13 17:33:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:33:18,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:33:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 893 transitions. [2022-12-13 17:33:18,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4447211155378486 [2022-12-13 17:33:18,859 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 893 transitions. [2022-12-13 17:33:18,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 893 transitions. [2022-12-13 17:33:18,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:33:18,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 893 transitions. [2022-12-13 17:33:18,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 0 states have call successors, (0), 0 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 17:33:18,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 502.0) internal successors, (2510), 5 states have internal predecessors, (2510), 0 states have call successors, (0), 0 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 17:33:18,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 502.0) internal successors, (2510), 5 states have internal predecessors, (2510), 0 states have call successors, (0), 0 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 17:33:18,866 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 222 flow. Second operand 4 states and 893 transitions. [2022-12-13 17:33:18,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 524 flow [2022-12-13 17:33:18,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 522 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:33:18,880 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 243 flow [2022-12-13 17:33:18,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2022-12-13 17:33:18,881 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -2 predicate places. [2022-12-13 17:33:18,882 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 243 flow [2022-12-13 17:33:18,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 17:33:18,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:33:18,882 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:33:18,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:33:18,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:33:18,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:33:18,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1204509490, now seen corresponding path program 1 times [2022-12-13 17:33:18,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:33:18,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462379805] [2022-12-13 17:33:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:33:18,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:33:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:18,991 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 17:33:18,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:33:18,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462379805] [2022-12-13 17:33:18,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462379805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:33:18,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426308830] [2022-12-13 17:33:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:33:18,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:33:18,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:33:18,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:33:18,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:33:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:19,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:33:19,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:33:19,106 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 17:33:19,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:33:19,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426308830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:33:19,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 17:33:19,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 17:33:19,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424504010] [2022-12-13 17:33:19,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:33:19,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:33:19,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:33:19,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:33:19,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:33:19,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 502 [2022-12-13 17:33:19,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 17:33:19,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:33:19,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 502 [2022-12-13 17:33:19,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:33:39,259 INFO L130 PetriNetUnfolder]: 169181/216938 cut-off events. [2022-12-13 17:33:39,259 INFO L131 PetriNetUnfolder]: For 35809/35809 co-relation queries the response was YES. [2022-12-13 17:33:39,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488205 conditions, 216938 events. 169181/216938 cut-off events. For 35809/35809 co-relation queries the response was YES. Maximal size of possible extension queue 15075. Compared 1490624 event pairs, 123680 based on Foata normal form. 10250/95308 useless extension candidates. Maximal degree in co-relation 451243. Up to 212728 conditions per place. [2022-12-13 17:33:40,574 INFO L137 encePairwiseOnDemand]: 499/502 looper letters, 56 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-12-13 17:33:40,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 63 transitions, 349 flow [2022-12-13 17:33:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:33:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:33:40,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 673 transitions. [2022-12-13 17:33:40,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44687915006640105 [2022-12-13 17:33:40,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 673 transitions. [2022-12-13 17:33:40,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 673 transitions. [2022-12-13 17:33:40,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:33:40,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 673 transitions. [2022-12-13 17:33:40,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 0 states have call successors, (0), 0 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 17:33:40,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:33:40,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:33:40,580 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 243 flow. Second operand 3 states and 673 transitions. [2022-12-13 17:33:40,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 63 transitions, 349 flow [2022-12-13 17:33:40,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 343 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 17:33:40,592 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 231 flow [2022-12-13 17:33:40,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2022-12-13 17:33:40,592 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -3 predicate places. [2022-12-13 17:33:40,592 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 231 flow [2022-12-13 17:33:40,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 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 17:33:40,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:33:40,593 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 17:33:40,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:33:40,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 17:33:40,794 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:33:40,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:33:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash -998971503, now seen corresponding path program 1 times [2022-12-13 17:33:40,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:33:40,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845857167] [2022-12-13 17:33:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:33:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:33:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:40,865 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 17:33:40,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:33:40,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845857167] [2022-12-13 17:33:40,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845857167] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:33:40,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920035896] [2022-12-13 17:33:40,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:33:40,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:33:40,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:33:40,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:33:40,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:33:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:33:40,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 17:33:40,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:33:40,975 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 17:33:40,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:33:41,016 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 17:33:41,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920035896] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:33:41,016 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:33:41,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 17:33:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910644128] [2022-12-13 17:33:41,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:33:41,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 17:33:41,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:33:41,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 17:33:41,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 17:33:41,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 502 [2022-12-13 17:33:41,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 231 flow. Second operand has 13 states, 13 states have (on average 206.15384615384616) internal successors, (2680), 13 states have internal predecessors, (2680), 0 states have call successors, (0), 0 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 17:33:41,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:33:41,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 502 [2022-12-13 17:33:41,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:34:27,630 INFO L130 PetriNetUnfolder]: 372083/477052 cut-off events. [2022-12-13 17:34:27,631 INFO L131 PetriNetUnfolder]: For 56938/56938 co-relation queries the response was YES. [2022-12-13 17:34:29,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073799 conditions, 477052 events. 372083/477052 cut-off events. For 56938/56938 co-relation queries the response was YES. Maximal size of possible extension queue 17826. Compared 3367990 event pairs, 272096 based on Foata normal form. 12/190640 useless extension candidates. Maximal degree in co-relation 1073783. Up to 74636 conditions per place. [2022-12-13 17:34:30,608 INFO L137 encePairwiseOnDemand]: 497/502 looper letters, 444 selfloop transitions, 31 changer transitions 0/481 dead transitions. [2022-12-13 17:34:30,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 481 transitions, 2369 flow [2022-12-13 17:34:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 17:34:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 17:34:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2930 transitions. [2022-12-13 17:34:30,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4863877822045153 [2022-12-13 17:34:30,615 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2930 transitions. [2022-12-13 17:34:30,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2930 transitions. [2022-12-13 17:34:30,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:34:30,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2930 transitions. [2022-12-13 17:34:30,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 244.16666666666666) internal successors, (2930), 12 states have internal predecessors, (2930), 0 states have call successors, (0), 0 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 17:34:30,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 502.0) internal successors, (6526), 13 states have internal predecessors, (6526), 0 states have call successors, (0), 0 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 17:34:30,627 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 502.0) internal successors, (6526), 13 states have internal predecessors, (6526), 0 states have call successors, (0), 0 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 17:34:30,627 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 231 flow. Second operand 12 states and 2930 transitions. [2022-12-13 17:34:30,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 481 transitions, 2369 flow [2022-12-13 17:34:30,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 481 transitions, 2368 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:34:30,668 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 446 flow [2022-12-13 17:34:30,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=446, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2022-12-13 17:34:30,669 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 13 predicate places. [2022-12-13 17:34:30,669 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 446 flow [2022-12-13 17:34:30,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 206.15384615384616) internal successors, (2680), 13 states have internal predecessors, (2680), 0 states have call successors, (0), 0 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 17:34:30,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:34:30,670 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:34:30,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:34:30,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:34:30,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:34:30,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:34:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -504158122, now seen corresponding path program 1 times [2022-12-13 17:34:30,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:34:30,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391114714] [2022-12-13 17:34:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:34:30,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:34:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:34:30,948 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 17:34:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:34:30,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391114714] [2022-12-13 17:34:30,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391114714] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:34:30,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:34:30,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:34:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913985241] [2022-12-13 17:34:30,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:34:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:34:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:34:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:34:30,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:34:30,956 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 502 [2022-12-13 17:34:30,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 17:34:30,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:34:30,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 502 [2022-12-13 17:34:30,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:35:34,167 INFO L130 PetriNetUnfolder]: 448702/603771 cut-off events. [2022-12-13 17:35:34,167 INFO L131 PetriNetUnfolder]: For 96217/96217 co-relation queries the response was YES. [2022-12-13 17:35:36,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395854 conditions, 603771 events. 448702/603771 cut-off events. For 96217/96217 co-relation queries the response was YES. Maximal size of possible extension queue 30655. Compared 5159968 event pairs, 167618 based on Foata normal form. 0/266159 useless extension candidates. Maximal degree in co-relation 1395831. Up to 359305 conditions per place. [2022-12-13 17:35:38,880 INFO L137 encePairwiseOnDemand]: 498/502 looper letters, 107 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2022-12-13 17:35:38,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 115 transitions, 758 flow [2022-12-13 17:35:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:35:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:35:38,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2022-12-13 17:35:38,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4707835325365206 [2022-12-13 17:35:38,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2022-12-13 17:35:38,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2022-12-13 17:35:38,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:35:38,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2022-12-13 17:35:38,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 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 17:35:38,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:35:38,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:35:38,887 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 446 flow. Second operand 3 states and 709 transitions. [2022-12-13 17:35:38,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 115 transitions, 758 flow [2022-12-13 17:35:38,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 668 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-12-13 17:35:38,936 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 370 flow [2022-12-13 17:35:38,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2022-12-13 17:35:38,936 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2022-12-13 17:35:38,937 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 370 flow [2022-12-13 17:35:38,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 17:35:38,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:35:38,937 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:35:38,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:35:38,937 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:35:38,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:35:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -504158119, now seen corresponding path program 1 times [2022-12-13 17:35:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:35:38,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605728916] [2022-12-13 17:35:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:35:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:35:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:35:38,969 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 17:35:38,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:35:38,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605728916] [2022-12-13 17:35:38,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605728916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:35:38,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:35:38,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 17:35:38,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303987660] [2022-12-13 17:35:38,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:35:38,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:35:38,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:35:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:35:38,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:35:38,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 502 [2022-12-13 17:35:38,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 370 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 17:35:38,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:35:38,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 502 [2022-12-13 17:35:38,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:36:31,676 INFO L130 PetriNetUnfolder]: 378676/512075 cut-off events. [2022-12-13 17:36:31,676 INFO L131 PetriNetUnfolder]: For 96168/96168 co-relation queries the response was YES. [2022-12-13 17:36:33,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236162 conditions, 512075 events. 378676/512075 cut-off events. For 96168/96168 co-relation queries the response was YES. Maximal size of possible extension queue 25580. Compared 4305669 event pairs, 347182 based on Foata normal form. 0/254257 useless extension candidates. Maximal degree in co-relation 1236138. Up to 501317 conditions per place. [2022-12-13 17:36:35,759 INFO L137 encePairwiseOnDemand]: 500/502 looper letters, 74 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2022-12-13 17:36:35,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 518 flow [2022-12-13 17:36:35,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:36:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 17:36:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2022-12-13 17:36:35,762 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4455511288180611 [2022-12-13 17:36:35,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2022-12-13 17:36:35,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2022-12-13 17:36:35,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:36:35,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2022-12-13 17:36:35,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 17:36:35,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:36:35,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 502.0) internal successors, (2008), 4 states have internal predecessors, (2008), 0 states have call successors, (0), 0 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 17:36:35,766 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 370 flow. Second operand 3 states and 671 transitions. [2022-12-13 17:36:35,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 518 flow [2022-12-13 17:36:35,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 81 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:36:35,839 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 368 flow [2022-12-13 17:36:35,840 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2022-12-13 17:36:35,840 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 11 predicate places. [2022-12-13 17:36:35,840 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 368 flow [2022-12-13 17:36:35,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 17:36:35,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:36:35,841 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:35,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:36:35,841 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:36:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:35,841 INFO L85 PathProgramCache]: Analyzing trace with hash -504158116, now seen corresponding path program 1 times [2022-12-13 17:36:35,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:35,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761946196] [2022-12-13 17:36:35,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:35,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:35,898 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 17:36:35,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:35,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761946196] [2022-12-13 17:36:35,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761946196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:35,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:35,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:36:35,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19447922] [2022-12-13 17:36:35,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:35,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 17:36:35,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:35,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 17:36:35,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 17:36:35,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 502 [2022-12-13 17:36:35,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 17:36:35,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:36:35,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 502 [2022-12-13 17:36:35,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:37:25,750 INFO L130 PetriNetUnfolder]: 346022/468395 cut-off events. [2022-12-13 17:37:25,750 INFO L131 PetriNetUnfolder]: For 87924/87924 co-relation queries the response was YES. [2022-12-13 17:37:27,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1119261 conditions, 468395 events. 346022/468395 cut-off events. For 87924/87924 co-relation queries the response was YES. Maximal size of possible extension queue 24755. Compared 3921138 event pairs, 317172 based on Foata normal form. 350/238915 useless extension candidates. Maximal degree in co-relation 1119236. Up to 455737 conditions per place. [2022-12-13 17:37:29,616 INFO L137 encePairwiseOnDemand]: 490/502 looper letters, 88 selfloop transitions, 13 changer transitions 2/109 dead transitions. [2022-12-13 17:37:29,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 109 transitions, 658 flow [2022-12-13 17:37:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 17:37:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 17:37:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 884 transitions. [2022-12-13 17:37:29,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4402390438247012 [2022-12-13 17:37:29,619 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 884 transitions. [2022-12-13 17:37:29,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 884 transitions. [2022-12-13 17:37:29,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:37:29,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 884 transitions. [2022-12-13 17:37:29,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 221.0) internal successors, (884), 4 states have internal predecessors, (884), 0 states have call successors, (0), 0 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 17:37:29,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 502.0) internal successors, (2510), 5 states have internal predecessors, (2510), 0 states have call successors, (0), 0 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 17:37:29,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 502.0) internal successors, (2510), 5 states have internal predecessors, (2510), 0 states have call successors, (0), 0 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 17:37:29,625 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 368 flow. Second operand 4 states and 884 transitions. [2022-12-13 17:37:29,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 109 transitions, 658 flow [2022-12-13 17:37:29,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 109 transitions, 657 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 17:37:29,686 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 429 flow [2022-12-13 17:37:29,686 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=429, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2022-12-13 17:37:29,686 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 15 predicate places. [2022-12-13 17:37:29,687 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 429 flow [2022-12-13 17:37:29,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.75) internal successors, (811), 4 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 17:37:29,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:37:29,688 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:29,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 17:37:29,688 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:37:29,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:29,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1314915390, now seen corresponding path program 1 times [2022-12-13 17:37:29,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:29,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054821757] [2022-12-13 17:37:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:29,738 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 17:37:29,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:29,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054821757] [2022-12-13 17:37:29,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054821757] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:29,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810488110] [2022-12-13 17:37:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:29,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:29,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:29,740 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:29,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:37:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:29,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:37:29,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:29,861 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 17:37:29,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:29,877 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 17:37:29,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810488110] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:29,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:29,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 17:37:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48106795] [2022-12-13 17:37:29,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:29,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:37:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:37:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:37:29,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 502 [2022-12-13 17:37:29,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 429 flow. Second operand has 7 states, 7 states have (on average 212.85714285714286) internal successors, (1490), 7 states have internal predecessors, (1490), 0 states have call successors, (0), 0 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 17:37:29,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:37:29,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 502 [2022-12-13 17:37:29,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 17:39:22,345 INFO L130 PetriNetUnfolder]: 731396/969611 cut-off events. [2022-12-13 17:39:22,346 INFO L131 PetriNetUnfolder]: For 222496/222496 co-relation queries the response was YES. [2022-12-13 17:39:27,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612646 conditions, 969611 events. 731396/969611 cut-off events. For 222496/222496 co-relation queries the response was YES. Maximal size of possible extension queue 46412. Compared 8193671 event pairs, 125204 based on Foata normal form. 0/553745 useless extension candidates. Maximal degree in co-relation 2612619. Up to 270521 conditions per place. [2022-12-13 17:39:31,250 INFO L137 encePairwiseOnDemand]: 498/502 looper letters, 236 selfloop transitions, 9 changer transitions 0/251 dead transitions. [2022-12-13 17:39:31,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 251 transitions, 1481 flow [2022-12-13 17:39:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:39:31,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 17:39:31,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1681 transitions. [2022-12-13 17:39:31,254 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47837222538417756 [2022-12-13 17:39:31,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1681 transitions. [2022-12-13 17:39:31,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1681 transitions. [2022-12-13 17:39:31,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:39:31,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1681 transitions. [2022-12-13 17:39:31,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 0 states have call successors, (0), 0 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 17:39:31,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 502.0) internal successors, (4016), 8 states have internal predecessors, (4016), 0 states have call successors, (0), 0 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 17:39:31,261 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 502.0) internal successors, (4016), 8 states have internal predecessors, (4016), 0 states have call successors, (0), 0 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 17:39:31,261 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 429 flow. Second operand 7 states and 1681 transitions. [2022-12-13 17:39:31,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 251 transitions, 1481 flow [2022-12-13 17:39:31,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 251 transitions, 1454 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 17:39:31,383 INFO L231 Difference]: Finished difference. Result has 92 places, 88 transitions, 461 flow [2022-12-13 17:39:31,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=502, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=461, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2022-12-13 17:39:31,384 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, 22 predicate places. [2022-12-13 17:39:31,384 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 461 flow [2022-12-13 17:39:31,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.85714285714286) internal successors, (1490), 7 states have internal predecessors, (1490), 0 states have call successors, (0), 0 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 17:39:31,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 17:39:31,384 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:39:31,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 17:39:31,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99a2a601-ab5e-4c40-8c00-84f117eb4859/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 17:39:31,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-12-13 17:39:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:39:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1314915389, now seen corresponding path program 1 times [2022-12-13 17:39:31,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:39:31,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897492247] [2022-12-13 17:39:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:39:31,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:39:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:39:31,645 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 17:39:31,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:39:31,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897492247] [2022-12-13 17:39:31,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897492247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:39:31,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:39:31,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:39:31,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065529497] [2022-12-13 17:39:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:39:31,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:39:31,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:39:31,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:39:31,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:39:31,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 502 [2022-12-13 17:39:31,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 461 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 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 17:39:31,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 17:39:31,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 502 [2022-12-13 17:39:31,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand