./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/barrier_3t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/barrier_3t.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:43:59,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:43:59,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:43:59,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:43:59,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:43:59,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:43:59,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:43:59,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:43:59,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:43:59,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:43:59,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:43:59,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:43:59,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:43:59,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:43:59,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:43:59,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:43:59,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:43:59,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:43:59,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:43:59,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:43:59,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:43:59,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:43:59,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:43:59,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:43:59,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:43:59,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:43:59,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:43:59,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:43:59,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:43:59,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:43:59,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:43:59,842 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:43:59,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:43:59,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:43:59,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:43:59,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:43:59,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:43:59,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:43:59,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:43:59,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:43:59,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:43:59,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 16:43:59,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:43:59,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:43:59,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:43:59,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:43:59,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:43:59,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:43:59,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:43:59,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:43:59,905 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:43:59,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:43:59,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:43:59,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 16:43:59,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:43:59,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:43:59,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:43:59,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:43:59,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:43:59,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:43:59,909 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 16:43:59,909 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:43:59,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:43:59,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:43:59,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:43:59,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:43:59,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:43:59,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:43:59,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:43:59,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:43:59,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:43:59,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:43:59,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:43:59,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:43:59,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:43:59,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:43:59,913 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:43:59,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:43:59,913 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_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 116240ce9d1e33454ba4eae840c2d7b67606f3cd4ffa1a06798f06dcbc1241fc [2022-11-25 16:44:00,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:44:00,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:44:00,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:44:00,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:44:00,321 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:44:00,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-11-25 16:44:03,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:44:04,127 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:44:04,133 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i [2022-11-25 16:44:04,159 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/data/00dfc1d34/d8d6aa9229c14de4bef78751f08c194b/FLAG60a9ec86b [2022-11-25 16:44:04,181 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/data/00dfc1d34/d8d6aa9229c14de4bef78751f08c194b [2022-11-25 16:44:04,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:44:04,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:44:04,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:44:04,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:44:04,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:44:04,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:44:04" (1/1) ... [2022-11-25 16:44:04,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7e6301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:04, skipping insertion in model container [2022-11-25 16:44:04,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:44:04" (1/1) ... [2022-11-25 16:44:04,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:44:04,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:44:04,515 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:44:04,740 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[30484,30497] [2022-11-25 16:44:04,805 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[31858,31871] [2022-11-25 16:44:04,810 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[31909,31922] [2022-11-25 16:44:04,820 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32058,32071] [2022-11-25 16:44:04,822 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32135,32148] [2022-11-25 16:44:04,823 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32182,32195] [2022-11-25 16:44:04,826 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32291,32304] [2022-11-25 16:44:04,828 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32410,32423] [2022-11-25 16:44:04,829 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32458,32471] [2022-11-25 16:44:04,830 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32535,32548] [2022-11-25 16:44:04,833 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32661,32674] [2022-11-25 16:44:04,855 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[33244,33257] [2022-11-25 16:44:04,856 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[33321,33334] [2022-11-25 16:44:04,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:44:04,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:44:04,888 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 16:44:04,918 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[30484,30497] [2022-11-25 16:44:04,937 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[31858,31871] [2022-11-25 16:44:04,944 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[31909,31922] [2022-11-25 16:44:04,950 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32058,32071] [2022-11-25 16:44:04,955 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32135,32148] [2022-11-25 16:44:04,956 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32182,32195] [2022-11-25 16:44:04,962 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32291,32304] [2022-11-25 16:44:04,965 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32410,32423] [2022-11-25 16:44:04,969 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32458,32471] [2022-11-25 16:44:04,971 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32535,32548] [2022-11-25 16:44:04,977 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[32661,32674] [2022-11-25 16:44:05,001 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[33244,33257] [2022-11-25 16:44:05,005 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_714eb0fc-27be-4e90-9539-fff1c896361c/sv-benchmarks/c/pthread-divine/barrier_3t.i[33321,33334] [2022-11-25 16:44:05,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:44:05,063 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:44:05,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05 WrapperNode [2022-11-25 16:44:05,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:44:05,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:44:05,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:44:05,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:44:05,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,195 INFO L138 Inliner]: procedures = 174, calls = 83, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 955 [2022-11-25 16:44:05,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:44:05,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:44:05,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:44:05,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:44:05,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,300 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:44:05,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:44:05,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:44:05,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:44:05,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (1/1) ... [2022-11-25 16:44:05,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:44:05,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:44:05,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:44:05,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:44:05,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 16:44:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 16:44:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-25 16:44:05,431 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2022-11-25 16:44:05,432 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2022-11-25 16:44:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:44:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 16:44:05,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 16:44:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 16:44:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 16:44:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:44:05,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:44:05,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:44:05,436 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 16:44:05,641 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:44:05,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:44:07,284 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:44:07,299 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:44:07,300 INFO L300 CfgBuilder]: Removed 20 assume(true) statements. [2022-11-25 16:44:07,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:44:07 BoogieIcfgContainer [2022-11-25 16:44:07,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:44:07,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:44:07,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:44:07,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:44:07,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:44:04" (1/3) ... [2022-11-25 16:44:07,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70efd082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:44:07, skipping insertion in model container [2022-11-25 16:44:07,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:44:05" (2/3) ... [2022-11-25 16:44:07,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70efd082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:44:07, skipping insertion in model container [2022-11-25 16:44:07,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:44:07" (3/3) ... [2022-11-25 16:44:07,313 INFO L112 eAbstractionObserver]: Analyzing ICFG barrier_3t.i [2022-11-25 16:44:07,324 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 16:44:07,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:44:07,337 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 98 error locations. [2022-11-25 16:44:07,337 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 16:44:07,577 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 16:44:07,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1023 places, 1090 transitions, 2188 flow [2022-11-25 16:44:08,802 INFO L130 PetriNetUnfolder]: 106/1598 cut-off events. [2022-11-25 16:44:08,803 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:44:08,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 1598 events. 106/1598 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6064 event pairs, 0 based on Foata normal form. 0/1344 useless extension candidates. Maximal degree in co-relation 964. Up to 4 conditions per place. [2022-11-25 16:44:08,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 1023 places, 1090 transitions, 2188 flow [2022-11-25 16:44:08,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1023 places, 1090 transitions, 2188 flow [2022-11-25 16:44:08,995 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:44:09,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1023 places, 1090 transitions, 2188 flow [2022-11-25 16:44:09,035 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1023 places, 1090 transitions, 2188 flow [2022-11-25 16:44:09,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1023 places, 1090 transitions, 2188 flow [2022-11-25 16:44:10,091 INFO L130 PetriNetUnfolder]: 106/1598 cut-off events. [2022-11-25 16:44:10,092 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 16:44:10,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 1598 events. 106/1598 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6064 event pairs, 0 based on Foata normal form. 0/1344 useless extension candidates. Maximal degree in co-relation 964. Up to 4 conditions per place. [2022-11-25 16:44:10,340 INFO L119 LiptonReduction]: Number of co-enabled transitions 463628 [2022-11-25 16:48:40,461 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:48:51,315 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:50:01,268 WARN L233 SmtUtils]: Spent 50.52s on a formula simplification. DAG size of input: 144 DAG size of output: 142 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:50:15,186 WARN L233 SmtUtils]: Spent 13.92s on a formula simplification that was a NOOP. DAG size: 134 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:51:11,379 WARN L233 SmtUtils]: Spent 56.19s on a formula simplification. DAG size of input: 150 DAG size of output: 148 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:51:27,293 WARN L233 SmtUtils]: Spent 15.91s on a formula simplification that was a NOOP. DAG size: 140 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:51:48,375 WARN L233 SmtUtils]: Spent 17.91s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:52:06,089 WARN L233 SmtUtils]: Spent 17.71s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:52:26,375 WARN L233 SmtUtils]: Spent 20.28s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:52:46,538 WARN L233 SmtUtils]: Spent 20.16s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:52:46,804 INFO L134 LiptonReduction]: Checked pairs total: 2882175 [2022-11-25 16:52:46,804 INFO L136 LiptonReduction]: Total number of compositions: 710 [2022-11-25 16:52:46,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:52:46,828 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;@24b22807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:52:46,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 143 error locations. [2022-11-25 16:52:46,832 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:52:46,833 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:52:46,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:46,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:52:46,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 140 more)] === [2022-11-25 16:52:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:46,841 INFO L85 PathProgramCache]: Analyzing trace with hash 117534, now seen corresponding path program 1 times [2022-11-25 16:52:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:46,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490245643] [2022-11-25 16:52:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:46,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:52:47,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:47,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490245643] [2022-11-25 16:52:47,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490245643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:47,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:52:47,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:52:47,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295099789] [2022-11-25 16:52:47,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:47,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:52:47,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:47,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:52:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:52:47,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1045 out of 1800 [2022-11-25 16:52:47,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 588 transitions, 1184 flow. Second operand has 2 states, 2 states have (on average 1046.0) internal successors, (2092), 2 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:47,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:47,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1045 of 1800 [2022-11-25 16:52:47,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:52:57,627 INFO L130 PetriNetUnfolder]: 10454/33450 cut-off events. [2022-11-25 16:52:57,627 INFO L131 PetriNetUnfolder]: For 3/8 co-relation queries the response was YES. [2022-11-25 16:52:57,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52278 conditions, 33450 events. 10454/33450 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 339570 event pairs, 8170 based on Foata normal form. 909/30931 useless extension candidates. Maximal degree in co-relation 51868. Up to 18822 conditions per place. [2022-11-25 16:52:57,821 INFO L137 encePairwiseOnDemand]: 1770/1800 looper letters, 211 selfloop transitions, 0 changer transitions 0/558 dead transitions. [2022-11-25 16:52:57,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 558 transitions, 1546 flow [2022-11-25 16:52:57,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 16:52:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 16:52:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2331 transitions. [2022-11-25 16:52:57,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6475 [2022-11-25 16:52:57,852 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2331 transitions. [2022-11-25 16:52:57,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2331 transitions. [2022-11-25 16:52:57,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:52:57,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2331 transitions. [2022-11-25 16:52:57,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1165.5) internal successors, (2331), 2 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:57,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1800.0) internal successors, (5400), 3 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:57,900 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1800.0) internal successors, (5400), 3 states have internal predecessors, (5400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:57,903 INFO L175 Difference]: Start difference. First operand has 541 places, 588 transitions, 1184 flow. Second operand 2 states and 2331 transitions. [2022-11-25 16:52:57,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 558 transitions, 1546 flow [2022-11-25 16:52:57,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 558 transitions, 1546 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:52:57,927 INFO L231 Difference]: Finished difference. Result has 535 places, 558 transitions, 1124 flow [2022-11-25 16:52:57,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1800, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1124, PETRI_PLACES=535, PETRI_TRANSITIONS=558} [2022-11-25 16:52:57,938 INFO L288 CegarLoopForPetriNet]: 541 programPoint places, -6 predicate places. [2022-11-25 16:52:57,938 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 558 transitions, 1124 flow [2022-11-25 16:52:57,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1046.0) internal successors, (2092), 2 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:57,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:52:57,941 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-25 16:52:57,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:52:57,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 140 more)] === [2022-11-25 16:52:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:52:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1281736247, now seen corresponding path program 1 times [2022-11-25 16:52:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:52:57,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998003745] [2022-11-25 16:52:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:52:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:52:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:52:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:52:58,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:52:58,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998003745] [2022-11-25 16:52:58,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998003745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:52:58,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:52:58,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 16:52:58,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118503622] [2022-11-25 16:52:58,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:52:58,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:52:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:52:58,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:52:58,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:52:58,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1041 out of 1800 [2022-11-25 16:52:58,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 558 transitions, 1124 flow. Second operand has 3 states, 3 states have (on average 1042.6666666666667) internal successors, (3128), 3 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:52:58,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:52:58,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1041 of 1800 [2022-11-25 16:52:58,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:53:06,189 INFO L130 PetriNetUnfolder]: 10454/33451 cut-off events. [2022-11-25 16:53:06,190 INFO L131 PetriNetUnfolder]: For 3/8 co-relation queries the response was YES. [2022-11-25 16:53:06,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52281 conditions, 33451 events. 10454/33451 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 339810 event pairs, 8170 based on Foata normal form. 0/30023 useless extension candidates. Maximal degree in co-relation 52277. Up to 18822 conditions per place. [2022-11-25 16:53:06,363 INFO L137 encePairwiseOnDemand]: 1797/1800 looper letters, 210 selfloop transitions, 2 changer transitions 0/559 dead transitions. [2022-11-25 16:53:06,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 559 transitions, 1550 flow [2022-11-25 16:53:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:53:06,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 16:53:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3336 transitions. [2022-11-25 16:53:06,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6177777777777778 [2022-11-25 16:53:06,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3336 transitions. [2022-11-25 16:53:06,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3336 transitions. [2022-11-25 16:53:06,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:53:06,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3336 transitions. [2022-11-25 16:53:06,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1112.0) internal successors, (3336), 3 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:06,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1800.0) internal successors, (7200), 4 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:06,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1800.0) internal successors, (7200), 4 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:06,409 INFO L175 Difference]: Start difference. First operand has 535 places, 558 transitions, 1124 flow. Second operand 3 states and 3336 transitions. [2022-11-25 16:53:06,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 559 transitions, 1550 flow [2022-11-25 16:53:06,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 559 transitions, 1550 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 16:53:06,425 INFO L231 Difference]: Finished difference. Result has 538 places, 559 transitions, 1136 flow [2022-11-25 16:53:06,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1800, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1136, PETRI_PLACES=538, PETRI_TRANSITIONS=559} [2022-11-25 16:53:06,428 INFO L288 CegarLoopForPetriNet]: 541 programPoint places, -3 predicate places. [2022-11-25 16:53:06,428 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 559 transitions, 1136 flow [2022-11-25 16:53:06,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1042.6666666666667) internal successors, (3128), 3 states have internal predecessors, (3128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:06,431 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:53:06,431 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 16:53:06,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:53:06,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 140 more)] === [2022-11-25 16:53:06,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:53:06,437 INFO L85 PathProgramCache]: Analyzing trace with hash 494959114, now seen corresponding path program 1 times [2022-11-25 16:53:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:53:06,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532508325] [2022-11-25 16:53:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:53:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:53:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:53:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:53:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:53:06,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532508325] [2022-11-25 16:53:06,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532508325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:53:06,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721995446] [2022-11-25 16:53:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:53:06,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:53:06,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:53:06,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:53:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:53:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:53:06,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:53:06,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:53:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:53:06,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:53:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 16:53:07,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721995446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:53:07,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:53:07,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2022-11-25 16:53:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419120158] [2022-11-25 16:53:07,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:53:07,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:53:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:53:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:53:07,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:53:07,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1040 out of 1800 [2022-11-25 16:53:07,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 559 transitions, 1136 flow. Second operand has 5 states, 5 states have (on average 1041.8) internal successors, (5209), 5 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:07,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:53:07,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1040 of 1800 [2022-11-25 16:53:07,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 16:53:15,715 INFO L130 PetriNetUnfolder]: 10454/33453 cut-off events. [2022-11-25 16:53:15,715 INFO L131 PetriNetUnfolder]: For 3/8 co-relation queries the response was YES. [2022-11-25 16:53:15,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52294 conditions, 33453 events. 10454/33453 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 339945 event pairs, 8170 based on Foata normal form. 0/30025 useless extension candidates. Maximal degree in co-relation 52288. Up to 18822 conditions per place. [2022-11-25 16:53:15,918 INFO L137 encePairwiseOnDemand]: 1797/1800 looper letters, 210 selfloop transitions, 4 changer transitions 0/561 dead transitions. [2022-11-25 16:53:15,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 561 transitions, 1572 flow [2022-11-25 16:53:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:53:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 16:53:15,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5416 transitions. [2022-11-25 16:53:15,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6017777777777777 [2022-11-25 16:53:15,944 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 5416 transitions. [2022-11-25 16:53:15,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 5416 transitions. [2022-11-25 16:53:15,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 16:53:15,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 5416 transitions. [2022-11-25 16:53:15,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 1083.2) internal successors, (5416), 5 states have internal predecessors, (5416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:16,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1800.0) internal successors, (10800), 6 states have internal predecessors, (10800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:16,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1800.0) internal successors, (10800), 6 states have internal predecessors, (10800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:16,007 INFO L175 Difference]: Start difference. First operand has 538 places, 559 transitions, 1136 flow. Second operand 5 states and 5416 transitions. [2022-11-25 16:53:16,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 561 transitions, 1572 flow [2022-11-25 16:53:16,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 561 transitions, 1568 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 16:53:16,030 INFO L231 Difference]: Finished difference. Result has 543 places, 561 transitions, 1158 flow [2022-11-25 16:53:16,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1800, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1158, PETRI_PLACES=543, PETRI_TRANSITIONS=561} [2022-11-25 16:53:16,034 INFO L288 CegarLoopForPetriNet]: 541 programPoint places, 2 predicate places. [2022-11-25 16:53:16,034 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 561 transitions, 1158 flow [2022-11-25 16:53:16,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1041.8) internal successors, (5209), 5 states have internal predecessors, (5209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:53:16,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:53:16,059 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-11-25 16:53:16,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:53:16,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714eb0fc-27be-4e90-9539-fff1c896361c/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:53:16,266 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 140 more)] === [2022-11-25 16:53:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:53:16,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2040165866, now seen corresponding path program 2 times [2022-11-25 16:53:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:53:16,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654221037] [2022-11-25 16:53:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:53:16,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:53:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:53:16,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 16:53:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 16:53:16,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 16:53:16,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 16:53:16,515 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (142 of 143 remaining) [2022-11-25 16:53:16,517 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (141 of 143 remaining) [2022-11-25 16:53:16,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (140 of 143 remaining) [2022-11-25 16:53:16,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (139 of 143 remaining) [2022-11-25 16:53:16,518 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (138 of 143 remaining) [2022-11-25 16:53:16,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (137 of 143 remaining) [2022-11-25 16:53:16,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (136 of 143 remaining) [2022-11-25 16:53:16,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (135 of 143 remaining) [2022-11-25 16:53:16,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (134 of 143 remaining) [2022-11-25 16:53:16,520 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (133 of 143 remaining) [2022-11-25 16:53:16,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (132 of 143 remaining) [2022-11-25 16:53:16,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (131 of 143 remaining) [2022-11-25 16:53:16,521 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (130 of 143 remaining) [2022-11-25 16:53:16,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (129 of 143 remaining) [2022-11-25 16:53:16,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (128 of 143 remaining) [2022-11-25 16:53:16,522 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (127 of 143 remaining) [2022-11-25 16:53:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE (126 of 143 remaining) [2022-11-25 16:53:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE (125 of 143 remaining) [2022-11-25 16:53:16,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONDATA_RACE (124 of 143 remaining) [2022-11-25 16:53:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE (123 of 143 remaining) [2022-11-25 16:53:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONDATA_RACE (122 of 143 remaining) [2022-11-25 16:53:16,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE (121 of 143 remaining) [2022-11-25 16:53:16,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE (120 of 143 remaining) [2022-11-25 16:53:16,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONDATA_RACE (119 of 143 remaining) [2022-11-25 16:53:16,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE (118 of 143 remaining) [2022-11-25 16:53:16,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE (117 of 143 remaining) [2022-11-25 16:53:16,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE (116 of 143 remaining) [2022-11-25 16:53:16,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONDATA_RACE (115 of 143 remaining) [2022-11-25 16:53:16,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONDATA_RACE (114 of 143 remaining) [2022-11-25 16:53:16,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONDATA_RACE (113 of 143 remaining) [2022-11-25 16:53:16,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONDATA_RACE (112 of 143 remaining) [2022-11-25 16:53:16,533 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONDATA_RACE (111 of 143 remaining) [2022-11-25 16:53:16,535 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONDATA_RACE (110 of 143 remaining) [2022-11-25 16:53:16,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONDATA_RACE (109 of 143 remaining) [2022-11-25 16:53:16,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONDATA_RACE (108 of 143 remaining) [2022-11-25 16:53:16,536 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONDATA_RACE (107 of 143 remaining) [2022-11-25 16:53:16,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONDATA_RACE (106 of 143 remaining) [2022-11-25 16:53:16,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONDATA_RACE (105 of 143 remaining) [2022-11-25 16:53:16,537 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE (104 of 143 remaining) [2022-11-25 16:53:16,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (103 of 143 remaining) [2022-11-25 16:53:16,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONDATA_RACE (102 of 143 remaining) [2022-11-25 16:53:16,538 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE (101 of 143 remaining) [2022-11-25 16:53:16,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONDATA_RACE (100 of 143 remaining) [2022-11-25 16:53:16,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONDATA_RACE (99 of 143 remaining) [2022-11-25 16:53:16,539 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE (98 of 143 remaining) [2022-11-25 16:53:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONDATA_RACE (97 of 143 remaining) [2022-11-25 16:53:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45ASSERT_VIOLATIONDATA_RACE (96 of 143 remaining) [2022-11-25 16:53:16,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46ASSERT_VIOLATIONDATA_RACE (95 of 143 remaining) [2022-11-25 16:53:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONDATA_RACE (94 of 143 remaining) [2022-11-25 16:53:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONDATA_RACE (93 of 143 remaining) [2022-11-25 16:53:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONDATA_RACE (92 of 143 remaining) [2022-11-25 16:53:16,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONDATA_RACE (91 of 143 remaining) [2022-11-25 16:53:16,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr52ASSERT_VIOLATIONDATA_RACE (90 of 143 remaining) [2022-11-25 16:53:16,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51ASSERT_VIOLATIONDATA_RACE (89 of 143 remaining) [2022-11-25 16:53:16,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53ASSERT_VIOLATIONDATA_RACE (88 of 143 remaining) [2022-11-25 16:53:16,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONDATA_RACE (87 of 143 remaining) [2022-11-25 16:53:16,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONDATA_RACE (86 of 143 remaining) [2022-11-25 16:53:16,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONDATA_RACE (85 of 143 remaining) [2022-11-25 16:53:16,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONDATA_RACE (84 of 143 remaining) [2022-11-25 16:53:16,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONDATA_RACE (83 of 143 remaining) [2022-11-25 16:53:16,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONDATA_RACE (82 of 143 remaining) [2022-11-25 16:53:16,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONDATA_RACE (81 of 143 remaining) [2022-11-25 16:53:16,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONDATA_RACE (80 of 143 remaining) [2022-11-25 16:53:16,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONDATA_RACE (79 of 143 remaining) [2022-11-25 16:53:16,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONDATA_RACE (78 of 143 remaining) [2022-11-25 16:53:16,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr14ASSERT_VIOLATIONDATA_RACE (77 of 143 remaining) [2022-11-25 16:53:16,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONDATA_RACE (76 of 143 remaining) [2022-11-25 16:53:16,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr15ASSERT_VIOLATIONDATA_RACE (75 of 143 remaining) [2022-11-25 16:53:16,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONDATA_RACE (74 of 143 remaining) [2022-11-25 16:53:16,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr16ASSERT_VIOLATIONDATA_RACE (73 of 143 remaining) [2022-11-25 16:53:16,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr12ASSERT_VIOLATIONDATA_RACE (72 of 143 remaining) [2022-11-25 16:53:16,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr17ASSERT_VIOLATIONDATA_RACE (71 of 143 remaining) [2022-11-25 16:53:16,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr13ASSERT_VIOLATIONDATA_RACE (70 of 143 remaining) [2022-11-25 16:53:16,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr18ASSERT_VIOLATIONDATA_RACE (69 of 143 remaining) [2022-11-25 16:53:16,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr19ASSERT_VIOLATIONDATA_RACE (68 of 143 remaining) [2022-11-25 16:53:16,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr21ASSERT_VIOLATIONDATA_RACE (67 of 143 remaining) [2022-11-25 16:53:16,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr20ASSERT_VIOLATIONDATA_RACE (66 of 143 remaining) [2022-11-25 16:53:16,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr22ASSERT_VIOLATIONDATA_RACE (65 of 143 remaining) [2022-11-25 16:53:16,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr23ASSERT_VIOLATIONDATA_RACE (64 of 143 remaining) [2022-11-25 16:53:16,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr24ASSERT_VIOLATIONDATA_RACE (63 of 143 remaining) [2022-11-25 16:53:16,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr25ASSERT_VIOLATIONDATA_RACE (62 of 143 remaining) [2022-11-25 16:53:16,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr26ASSERT_VIOLATIONDATA_RACE (61 of 143 remaining) [2022-11-25 16:53:16,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr27ASSERT_VIOLATIONDATA_RACE (60 of 143 remaining) [2022-11-25 16:53:16,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr28ASSERT_VIOLATIONDATA_RACE (59 of 143 remaining) [2022-11-25 16:53:16,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr33ASSERT_VIOLATIONDATA_RACE (58 of 143 remaining) [2022-11-25 16:53:16,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr29ASSERT_VIOLATIONDATA_RACE (57 of 143 remaining) [2022-11-25 16:53:16,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr34ASSERT_VIOLATIONDATA_RACE (56 of 143 remaining) [2022-11-25 16:53:16,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr30ASSERT_VIOLATIONDATA_RACE (55 of 143 remaining) [2022-11-25 16:53:16,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr35ASSERT_VIOLATIONDATA_RACE (54 of 143 remaining) [2022-11-25 16:53:16,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr31ASSERT_VIOLATIONDATA_RACE (53 of 143 remaining) [2022-11-25 16:53:16,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr36ASSERT_VIOLATIONDATA_RACE (52 of 143 remaining) [2022-11-25 16:53:16,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr32ASSERT_VIOLATIONDATA_RACE (51 of 143 remaining) [2022-11-25 16:53:16,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr37ASSERT_VIOLATIONDATA_RACE (50 of 143 remaining) [2022-11-25 16:53:16,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr38ASSERT_VIOLATIONDATA_RACE (49 of 143 remaining) [2022-11-25 16:53:16,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr39ASSERT_VIOLATIONDATA_RACE (48 of 143 remaining) [2022-11-25 16:53:16,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr40ASSERT_VIOLATIONDATA_RACE (47 of 143 remaining) [2022-11-25 16:53:16,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr43ASSERT_VIOLATIONDATA_RACE (46 of 143 remaining) [2022-11-25 16:53:16,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr41ASSERT_VIOLATIONDATA_RACE (45 of 143 remaining) [2022-11-25 16:53:16,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr42ASSERT_VIOLATIONDATA_RACE (44 of 143 remaining) [2022-11-25 16:53:16,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr0ASSERT_VIOLATIONDATA_RACE (43 of 143 remaining) [2022-11-25 16:53:16,561 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr1ASSERT_VIOLATIONDATA_RACE (42 of 143 remaining) [2022-11-25 16:53:16,562 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr2ASSERT_VIOLATIONDATA_RACE (41 of 143 remaining) [2022-11-25 16:53:16,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr4ASSERT_VIOLATIONDATA_RACE (40 of 143 remaining) [2022-11-25 16:53:16,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr3ASSERT_VIOLATIONDATA_RACE (39 of 143 remaining) [2022-11-25 16:53:16,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr5ASSERT_VIOLATIONDATA_RACE (38 of 143 remaining) [2022-11-25 16:53:16,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr6ASSERT_VIOLATIONDATA_RACE (37 of 143 remaining) [2022-11-25 16:53:16,563 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr7ASSERT_VIOLATIONDATA_RACE (36 of 143 remaining) [2022-11-25 16:53:16,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr8ASSERT_VIOLATIONDATA_RACE (35 of 143 remaining) [2022-11-25 16:53:16,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr9ASSERT_VIOLATIONDATA_RACE (34 of 143 remaining) [2022-11-25 16:53:16,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr14ASSERT_VIOLATIONDATA_RACE (33 of 143 remaining) [2022-11-25 16:53:16,564 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr10ASSERT_VIOLATIONDATA_RACE (32 of 143 remaining) [2022-11-25 16:53:16,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr15ASSERT_VIOLATIONDATA_RACE (31 of 143 remaining) [2022-11-25 16:53:16,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr11ASSERT_VIOLATIONDATA_RACE (30 of 143 remaining) [2022-11-25 16:53:16,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr16ASSERT_VIOLATIONDATA_RACE (29 of 143 remaining) [2022-11-25 16:53:16,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr12ASSERT_VIOLATIONDATA_RACE (28 of 143 remaining) [2022-11-25 16:53:16,565 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr17ASSERT_VIOLATIONDATA_RACE (27 of 143 remaining) [2022-11-25 16:53:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr13ASSERT_VIOLATIONDATA_RACE (26 of 143 remaining) [2022-11-25 16:53:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr18ASSERT_VIOLATIONDATA_RACE (25 of 143 remaining) [2022-11-25 16:53:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr19ASSERT_VIOLATIONDATA_RACE (24 of 143 remaining) [2022-11-25 16:53:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr21ASSERT_VIOLATIONDATA_RACE (23 of 143 remaining) [2022-11-25 16:53:16,566 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr20ASSERT_VIOLATIONDATA_RACE (22 of 143 remaining) [2022-11-25 16:53:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr22ASSERT_VIOLATIONDATA_RACE (21 of 143 remaining) [2022-11-25 16:53:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr23ASSERT_VIOLATIONDATA_RACE (20 of 143 remaining) [2022-11-25 16:53:16,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr24ASSERT_VIOLATIONDATA_RACE (19 of 143 remaining) [2022-11-25 16:53:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr25ASSERT_VIOLATIONDATA_RACE (18 of 143 remaining) [2022-11-25 16:53:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr26ASSERT_VIOLATIONDATA_RACE (17 of 143 remaining) [2022-11-25 16:53:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr27ASSERT_VIOLATIONDATA_RACE (16 of 143 remaining) [2022-11-25 16:53:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr28ASSERT_VIOLATIONDATA_RACE (15 of 143 remaining) [2022-11-25 16:53:16,568 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr33ASSERT_VIOLATIONDATA_RACE (14 of 143 remaining) [2022-11-25 16:53:16,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr29ASSERT_VIOLATIONDATA_RACE (13 of 143 remaining) [2022-11-25 16:53:16,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr34ASSERT_VIOLATIONDATA_RACE (12 of 143 remaining) [2022-11-25 16:53:16,569 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr30ASSERT_VIOLATIONDATA_RACE (11 of 143 remaining) [2022-11-25 16:53:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr35ASSERT_VIOLATIONDATA_RACE (10 of 143 remaining) [2022-11-25 16:53:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr31ASSERT_VIOLATIONDATA_RACE (9 of 143 remaining) [2022-11-25 16:53:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr36ASSERT_VIOLATIONDATA_RACE (8 of 143 remaining) [2022-11-25 16:53:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr32ASSERT_VIOLATIONDATA_RACE (7 of 143 remaining) [2022-11-25 16:53:16,570 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr37ASSERT_VIOLATIONDATA_RACE (6 of 143 remaining) [2022-11-25 16:53:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr38ASSERT_VIOLATIONDATA_RACE (5 of 143 remaining) [2022-11-25 16:53:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr39ASSERT_VIOLATIONDATA_RACE (4 of 143 remaining) [2022-11-25 16:53:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr40ASSERT_VIOLATIONDATA_RACE (3 of 143 remaining) [2022-11-25 16:53:16,571 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr43ASSERT_VIOLATIONDATA_RACE (2 of 143 remaining) [2022-11-25 16:53:16,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr41ASSERT_VIOLATIONDATA_RACE (1 of 143 remaining) [2022-11-25 16:53:16,572 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location worker_fnErr42ASSERT_VIOLATIONDATA_RACE (0 of 143 remaining) [2022-11-25 16:53:16,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 16:53:16,573 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-25 16:53:16,576 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-25 16:53:16,576 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-25 16:53:16,833 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 16:53:16,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1447 places, 1543 transitions, 3104 flow [2022-11-25 16:53:18,927 INFO L130 PetriNetUnfolder]: 179/2618 cut-off events. [2022-11-25 16:53:18,927 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:53:19,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 2618 events. 179/2618 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 13374 event pairs, 0 based on Foata normal form. 0/2196 useless extension candidates. Maximal degree in co-relation 1600. Up to 8 conditions per place. [2022-11-25 16:53:19,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 1447 places, 1543 transitions, 3104 flow [2022-11-25 16:53:19,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1447 places, 1543 transitions, 3104 flow [2022-11-25 16:53:19,112 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 16:53:19,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1447 places, 1543 transitions, 3104 flow [2022-11-25 16:53:19,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1447 places, 1543 transitions, 3104 flow [2022-11-25 16:53:19,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1447 places, 1543 transitions, 3104 flow [2022-11-25 16:53:21,038 INFO L130 PetriNetUnfolder]: 179/2618 cut-off events. [2022-11-25 16:53:21,039 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 16:53:21,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 2618 events. 179/2618 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 13374 event pairs, 0 based on Foata normal form. 0/2196 useless extension candidates. Maximal degree in co-relation 1600. Up to 8 conditions per place. [2022-11-25 16:53:22,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 1343980 [2022-11-25 16:54:31,809 WARN L233 SmtUtils]: Spent 7.48s on a formula simplification. DAG size of input: 108 DAG size of output: 106 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:54:41,803 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 114 DAG size of output: 112 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:55:37,709 WARN L233 SmtUtils]: Spent 34.02s on a formula simplification that was a NOOP. DAG size: 161 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:56:01,598 WARN L233 SmtUtils]: Spent 23.89s on a formula simplification that was a NOOP. DAG size: 153 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:56:32,421 WARN L233 SmtUtils]: Spent 30.82s on a formula simplification that was a NOOP. DAG size: 167 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:56:54,135 WARN L233 SmtUtils]: Spent 21.71s on a formula simplification that was a NOOP. DAG size: 159 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-25 16:56:57,158 INFO L134 LiptonReduction]: Checked pairs total: 7714662 [2022-11-25 16:56:57,159 INFO L136 LiptonReduction]: Total number of compositions: 953 [2022-11-25 16:56:57,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:56:57,165 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;@24b22807, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:56:57,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 187 error locations. [2022-11-25 16:56:57,168 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 16:56:57,169 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 16:56:57,169 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 16:56:57,169 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 16:56:57,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 184 more)] === [2022-11-25 16:56:57,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:56:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash 212014, now seen corresponding path program 1 times [2022-11-25 16:56:57,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:56:57,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739494425] [2022-11-25 16:56:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:56:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:56:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:56:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 16:56:57,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:56:57,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739494425] [2022-11-25 16:56:57,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739494425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:56:57,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:56:57,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 16:56:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828788266] [2022-11-25 16:56:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:56:57,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 16:56:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:56:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 16:56:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 16:56:57,201 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 1478 out of 2496 [2022-11-25 16:56:57,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 871 transitions, 1760 flow. Second operand has 2 states, 2 states have (on average 1479.0) internal successors, (2958), 2 states have internal predecessors, (2958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:56:57,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 16:56:57,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1478 of 2496 [2022-11-25 16:56:57,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand