./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:57:42,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:57:42,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:57:42,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:57:42,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:57:42,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:57:42,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:57:42,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:57:42,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:57:42,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:57:42,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:57:42,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:57:42,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:57:42,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:57:42,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:57:42,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:57:42,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:57:42,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:57:42,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:57:42,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:57:42,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:57:42,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:57:42,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:57:42,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:57:42,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:57:42,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:57:42,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:57:42,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:57:42,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:57:42,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:57:42,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:57:42,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:57:42,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:57:42,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:57:42,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:57:42,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:57:42,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:57:42,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:57:42,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:57:42,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:57:42,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:57:42,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:57:42,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:57:42,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:57:42,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:57:42,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:57:42,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:57:42,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:57:42,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:57:42,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:57:42,876 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:57:42,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:57:42,877 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:57:42,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:57:42,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:57:42,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:57:42,879 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:57:42,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:57:42,879 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:57:42,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:57:42,879 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:57:42,879 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_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 [2022-12-13 19:57:43,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:57:43,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:57:43,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:57:43,066 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:57:43,066 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:57:43,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2022-12-13 19:57:45,643 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:57:45,829 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:57:45,830 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2022-12-13 19:57:45,839 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/data/663ccf983/aa50b7630d56412e97bc2f9e23271cb6/FLAGa88231e08 [2022-12-13 19:57:46,237 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/data/663ccf983/aa50b7630d56412e97bc2f9e23271cb6 [2022-12-13 19:57:46,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:57:46,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:57:46,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:57:46,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:57:46,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:57:46,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35cfa357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46, skipping insertion in model container [2022-12-13 19:57:46,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:57:46,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:57:46,423 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_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2022-12-13 19:57:46,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,515 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,516 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,535 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:57:46,550 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:57:46,559 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_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i[949,962] [2022-12-13 19:57:46,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,585 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:57:46,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:57:46,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:57:46,621 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:57:46,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46 WrapperNode [2022-12-13 19:57:46,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:57:46,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:57:46,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:57:46,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:57:46,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,656 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2022-12-13 19:57:46,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:57:46,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:57:46,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:57:46,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:57:46,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,675 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:57:46,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:57:46,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:57:46,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:57:46,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (1/1) ... [2022-12-13 19:57:46,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:57:46,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:57:46,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:57:46,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:57:46,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 19:57:46,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 19:57:46,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 19:57:46,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 19:57:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 19:57:46,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 19:57:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:57:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:57:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:57:46,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:57:46,733 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:57:46,847 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:57:46,848 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:57:47,137 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:57:47,229 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:57:47,229 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:57:47,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:57:47 BoogieIcfgContainer [2022-12-13 19:57:47,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:57:47,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:57:47,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:57:47,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:57:47,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:57:46" (1/3) ... [2022-12-13 19:57:47,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0e58fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:57:47, skipping insertion in model container [2022-12-13 19:57:47,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:57:46" (2/3) ... [2022-12-13 19:57:47,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0e58fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:57:47, skipping insertion in model container [2022-12-13 19:57:47,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:57:47" (3/3) ... [2022-12-13 19:57:47,238 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037_tso.oepc.i [2022-12-13 19:57:47,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:57:47,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:57:47,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:57:47,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:57:47,302 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 19:57:47,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 140 transitions, 300 flow [2022-12-13 19:57:47,369 INFO L130 PetriNetUnfolder]: 2/136 cut-off events. [2022-12-13 19:57:47,369 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:57:47,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 2/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-12-13 19:57:47,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 140 transitions, 300 flow [2022-12-13 19:57:47,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 136 transitions, 284 flow [2022-12-13 19:57:47,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:57:47,386 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 136 transitions, 284 flow [2022-12-13 19:57:47,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 136 transitions, 284 flow [2022-12-13 19:57:47,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 284 flow [2022-12-13 19:57:47,410 INFO L130 PetriNetUnfolder]: 2/136 cut-off events. [2022-12-13 19:57:47,411 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:57:47,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 136 events. 2/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 75 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2022-12-13 19:57:47,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 3504 [2022-12-13 19:57:50,520 INFO L134 LiptonReduction]: Checked pairs total: 9952 [2022-12-13 19:57:50,520 INFO L136 LiptonReduction]: Total number of compositions: 116 [2022-12-13 19:57:50,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:57:50,534 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;@157abe9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:57:50,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 19:57:50,537 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2022-12-13 19:57:50,537 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:57:50,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:50,537 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:57:50,538 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:57:50,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash 552765816, now seen corresponding path program 1 times [2022-12-13 19:57:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:50,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044356048] [2022-12-13 19:57:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:50,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044356048] [2022-12-13 19:57:50,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044356048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:50,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:50,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:57:50,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922159037] [2022-12-13 19:57:50,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:57:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:57:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:57:50,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 256 [2022-12-13 19:57:50,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:50,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:50,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 256 [2022-12-13 19:57:50,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:57:51,790 INFO L130 PetriNetUnfolder]: 6855/9501 cut-off events. [2022-12-13 19:57:51,791 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-12-13 19:57:51,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18941 conditions, 9501 events. 6855/9501 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 49868 event pairs, 2421 based on Foata normal form. 320/9152 useless extension candidates. Maximal degree in co-relation 18929. Up to 7387 conditions per place. [2022-12-13 19:57:51,842 INFO L137 encePairwiseOnDemand]: 252/256 looper letters, 41 selfloop transitions, 2 changer transitions 4/51 dead transitions. [2022-12-13 19:57:51,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 214 flow [2022-12-13 19:57:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:57:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:57:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-12-13 19:57:51,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5494791666666666 [2022-12-13 19:57:51,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-12-13 19:57:51,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-12-13 19:57:51,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:57:51,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-12-13 19:57:51,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:51,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:51,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:51,864 INFO L175 Difference]: Start difference. First operand has 45 places, 33 transitions, 78 flow. Second operand 3 states and 422 transitions. [2022-12-13 19:57:51,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 214 flow [2022-12-13 19:57:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:57:51,868 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 70 flow [2022-12-13 19:57:51,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2022-12-13 19:57:51,873 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2022-12-13 19:57:51,873 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 70 flow [2022-12-13 19:57:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:51,873 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:51,873 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:51,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:57:51,874 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:57:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash -73595458, now seen corresponding path program 1 times [2022-12-13 19:57:51,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:51,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621908813] [2022-12-13 19:57:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:51,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:52,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:52,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621908813] [2022-12-13 19:57:52,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621908813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:52,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:52,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:52,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17612832] [2022-12-13 19:57:52,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:57:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:57:52,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:57:52,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 256 [2022-12-13 19:57:52,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:52,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:52,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 256 [2022-12-13 19:57:52,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:57:53,601 INFO L130 PetriNetUnfolder]: 9659/13109 cut-off events. [2022-12-13 19:57:53,601 INFO L131 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2022-12-13 19:57:53,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27159 conditions, 13109 events. 9659/13109 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 64089 event pairs, 2649 based on Foata normal form. 600/13708 useless extension candidates. Maximal degree in co-relation 27149. Up to 8101 conditions per place. [2022-12-13 19:57:53,647 INFO L137 encePairwiseOnDemand]: 252/256 looper letters, 39 selfloop transitions, 2 changer transitions 28/70 dead transitions. [2022-12-13 19:57:53,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 296 flow [2022-12-13 19:57:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:57:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:57:53,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 631 transitions. [2022-12-13 19:57:53,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49296875 [2022-12-13 19:57:53,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 631 transitions. [2022-12-13 19:57:53,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 631 transitions. [2022-12-13 19:57:53,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:57:53,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 631 transitions. [2022-12-13 19:57:53,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.2) internal successors, (631), 5 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:53,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:53,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:53,654 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 5 states and 631 transitions. [2022-12-13 19:57:53,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 296 flow [2022-12-13 19:57:53,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:57:53,658 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 78 flow [2022-12-13 19:57:53,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=78, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2022-12-13 19:57:53,658 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2022-12-13 19:57:53,659 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 78 flow [2022-12-13 19:57:53,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:53,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:53,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:53,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:57:53,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:57:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:53,660 INFO L85 PathProgramCache]: Analyzing trace with hash -138382591, now seen corresponding path program 1 times [2022-12-13 19:57:53,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:53,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470732815] [2022-12-13 19:57:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:53,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:54,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:54,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470732815] [2022-12-13 19:57:54,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470732815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:54,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:54,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:54,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419966774] [2022-12-13 19:57:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:54,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:57:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:57:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:57:54,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 256 [2022-12-13 19:57:54,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:54,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:54,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 256 [2022-12-13 19:57:54,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:57:54,998 INFO L130 PetriNetUnfolder]: 5827/8380 cut-off events. [2022-12-13 19:57:54,998 INFO L131 PetriNetUnfolder]: For 1390/1390 co-relation queries the response was YES. [2022-12-13 19:57:55,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17809 conditions, 8380 events. 5827/8380 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 47353 event pairs, 1163 based on Foata normal form. 260/8628 useless extension candidates. Maximal degree in co-relation 17796. Up to 6363 conditions per place. [2022-12-13 19:57:55,029 INFO L137 encePairwiseOnDemand]: 248/256 looper letters, 53 selfloop transitions, 7 changer transitions 30/93 dead transitions. [2022-12-13 19:57:55,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 93 transitions, 406 flow [2022-12-13 19:57:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:57:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:57:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 954 transitions. [2022-12-13 19:57:55,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5323660714285714 [2022-12-13 19:57:55,032 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 954 transitions. [2022-12-13 19:57:55,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 954 transitions. [2022-12-13 19:57:55,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:57:55,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 954 transitions. [2022-12-13 19:57:55,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:55,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:55,040 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:55,040 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 78 flow. Second operand 7 states and 954 transitions. [2022-12-13 19:57:55,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 93 transitions, 406 flow [2022-12-13 19:57:55,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 93 transitions, 394 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 19:57:55,069 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 132 flow [2022-12-13 19:57:55,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2022-12-13 19:57:55,070 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2022-12-13 19:57:55,070 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 132 flow [2022-12-13 19:57:55,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:55,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:55,071 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:55,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:57:55,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:57:55,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1841054797, now seen corresponding path program 1 times [2022-12-13 19:57:55,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:55,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040733762] [2022-12-13 19:57:55,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:55,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:55,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040733762] [2022-12-13 19:57:55,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040733762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:55,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:55,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:57:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130253441] [2022-12-13 19:57:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:57:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:55,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:57:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:57:55,405 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 256 [2022-12-13 19:57:55,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:55,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:55,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 256 [2022-12-13 19:57:55,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:57:56,266 INFO L130 PetriNetUnfolder]: 5715/8319 cut-off events. [2022-12-13 19:57:56,266 INFO L131 PetriNetUnfolder]: For 6796/6848 co-relation queries the response was YES. [2022-12-13 19:57:56,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22625 conditions, 8319 events. 5715/8319 cut-off events. For 6796/6848 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 47164 event pairs, 836 based on Foata normal form. 194/8486 useless extension candidates. Maximal degree in co-relation 22609. Up to 5974 conditions per place. [2022-12-13 19:57:56,299 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 58 selfloop transitions, 9 changer transitions 25/95 dead transitions. [2022-12-13 19:57:56,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 95 transitions, 522 flow [2022-12-13 19:57:56,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:57:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:57:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2022-12-13 19:57:56,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5228794642857143 [2022-12-13 19:57:56,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2022-12-13 19:57:56,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2022-12-13 19:57:56,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:57:56,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2022-12-13 19:57:56,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:56,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:56,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:56,307 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 132 flow. Second operand 7 states and 937 transitions. [2022-12-13 19:57:56,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 95 transitions, 522 flow [2022-12-13 19:57:56,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 95 transitions, 518 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 19:57:56,324 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 198 flow [2022-12-13 19:57:56,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2022-12-13 19:57:56,325 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2022-12-13 19:57:56,325 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 198 flow [2022-12-13 19:57:56,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:56,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:56,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:56,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:57:56,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:57:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1772785357, now seen corresponding path program 2 times [2022-12-13 19:57:56,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:56,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655006366] [2022-12-13 19:57:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:56,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:56,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:56,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655006366] [2022-12-13 19:57:56,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655006366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:56,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:56,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:57:56,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126691978] [2022-12-13 19:57:56,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:56,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:57:56,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:56,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:57:56,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:57:56,712 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 256 [2022-12-13 19:57:56,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:56,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:56,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 256 [2022-12-13 19:57:56,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:57:57,638 INFO L130 PetriNetUnfolder]: 5732/8319 cut-off events. [2022-12-13 19:57:57,638 INFO L131 PetriNetUnfolder]: For 17203/17331 co-relation queries the response was YES. [2022-12-13 19:57:57,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27213 conditions, 8319 events. 5732/8319 cut-off events. For 17203/17331 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 47203 event pairs, 873 based on Foata normal form. 218/8510 useless extension candidates. Maximal degree in co-relation 27192. Up to 5984 conditions per place. [2022-12-13 19:57:57,670 INFO L137 encePairwiseOnDemand]: 248/256 looper letters, 59 selfloop transitions, 12 changer transitions 25/99 dead transitions. [2022-12-13 19:57:57,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 99 transitions, 670 flow [2022-12-13 19:57:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:57:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:57:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 944 transitions. [2022-12-13 19:57:57,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2022-12-13 19:57:57,672 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 944 transitions. [2022-12-13 19:57:57,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 944 transitions. [2022-12-13 19:57:57,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:57:57,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 944 transitions. [2022-12-13 19:57:57,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:57,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:57,676 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:57,676 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 198 flow. Second operand 7 states and 944 transitions. [2022-12-13 19:57:57,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 99 transitions, 670 flow [2022-12-13 19:57:57,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 99 transitions, 643 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 19:57:57,725 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 264 flow [2022-12-13 19:57:57,725 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2022-12-13 19:57:57,726 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 15 predicate places. [2022-12-13 19:57:57,726 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 264 flow [2022-12-13 19:57:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.2) internal successors, (626), 5 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:57,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:57,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:57:57,726 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:57:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1706902011, now seen corresponding path program 1 times [2022-12-13 19:57:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:57,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431066309] [2022-12-13 19:57:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:57,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:58,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:58,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431066309] [2022-12-13 19:57:58,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431066309] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:58,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:58,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:57:58,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023198881] [2022-12-13 19:57:58,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:58,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:57:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:57:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:57:58,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 256 [2022-12-13 19:57:58,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 124.42857142857143) internal successors, (871), 7 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:58,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:58,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 256 [2022-12-13 19:57:58,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:57:59,119 INFO L130 PetriNetUnfolder]: 5853/8438 cut-off events. [2022-12-13 19:57:59,120 INFO L131 PetriNetUnfolder]: For 28735/28882 co-relation queries the response was YES. [2022-12-13 19:57:59,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30654 conditions, 8438 events. 5853/8438 cut-off events. For 28735/28882 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 47421 event pairs, 695 based on Foata normal form. 204/8621 useless extension candidates. Maximal degree in co-relation 30630. Up to 6068 conditions per place. [2022-12-13 19:57:59,151 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 63 selfloop transitions, 13 changer transitions 23/102 dead transitions. [2022-12-13 19:57:59,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 779 flow [2022-12-13 19:57:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:57:59,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:57:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 943 transitions. [2022-12-13 19:57:59,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5262276785714286 [2022-12-13 19:57:59,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 943 transitions. [2022-12-13 19:57:59,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 943 transitions. [2022-12-13 19:57:59,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:57:59,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 943 transitions. [2022-12-13 19:57:59,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.71428571428572) internal successors, (943), 7 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:59,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:59,156 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:59,156 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 264 flow. Second operand 7 states and 943 transitions. [2022-12-13 19:57:59,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 779 flow [2022-12-13 19:57:59,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 102 transitions, 713 flow, removed 29 selfloop flow, removed 4 redundant places. [2022-12-13 19:57:59,217 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 313 flow [2022-12-13 19:57:59,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=313, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2022-12-13 19:57:59,218 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2022-12-13 19:57:59,218 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 313 flow [2022-12-13 19:57:59,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.42857142857143) internal successors, (871), 7 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:59,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:57:59,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:57:59,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:57:59,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:57:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:57:59,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1238084435, now seen corresponding path program 1 times [2022-12-13 19:57:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:57:59,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581570676] [2022-12-13 19:57:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:57:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:57:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:57:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:57:59,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:57:59,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581570676] [2022-12-13 19:57:59,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581570676] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:57:59,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:57:59,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:57:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797658854] [2022-12-13 19:57:59,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:57:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:57:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:57:59,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:57:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:57:59,571 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 256 [2022-12-13 19:57:59,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:57:59,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:57:59,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 256 [2022-12-13 19:57:59,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:00,555 INFO L130 PetriNetUnfolder]: 6076/8734 cut-off events. [2022-12-13 19:58:00,555 INFO L131 PetriNetUnfolder]: For 37196/37454 co-relation queries the response was YES. [2022-12-13 19:58:00,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32853 conditions, 8734 events. 6076/8734 cut-off events. For 37196/37454 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 48655 event pairs, 1123 based on Foata normal form. 262/8962 useless extension candidates. Maximal degree in co-relation 32827. Up to 6167 conditions per place. [2022-12-13 19:58:00,586 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 74 selfloop transitions, 15 changer transitions 17/109 dead transitions. [2022-12-13 19:58:00,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 109 transitions, 854 flow [2022-12-13 19:58:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:58:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:58:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 936 transitions. [2022-12-13 19:58:00,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5223214285714286 [2022-12-13 19:58:00,588 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 936 transitions. [2022-12-13 19:58:00,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 936 transitions. [2022-12-13 19:58:00,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:00,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 936 transitions. [2022-12-13 19:58:00,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.71428571428572) internal successors, (936), 7 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:00,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:00,592 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:00,592 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 313 flow. Second operand 7 states and 936 transitions. [2022-12-13 19:58:00,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 109 transitions, 854 flow [2022-12-13 19:58:00,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 800 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-12-13 19:58:00,656 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 380 flow [2022-12-13 19:58:00,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=380, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2022-12-13 19:58:00,656 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2022-12-13 19:58:00,656 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 380 flow [2022-12-13 19:58:00,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:00,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:00,657 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:00,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:58:00,657 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:00,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:00,657 INFO L85 PathProgramCache]: Analyzing trace with hash -878268205, now seen corresponding path program 2 times [2022-12-13 19:58:00,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:00,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248469679] [2022-12-13 19:58:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:00,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:01,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:01,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248469679] [2022-12-13 19:58:01,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248469679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:01,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:01,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:58:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525002375] [2022-12-13 19:58:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:58:01,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:58:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:58:01,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 256 [2022-12-13 19:58:01,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 112.42857142857143) internal successors, (787), 7 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:01,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:01,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 256 [2022-12-13 19:58:01,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:03,234 INFO L130 PetriNetUnfolder]: 14085/19054 cut-off events. [2022-12-13 19:58:03,235 INFO L131 PetriNetUnfolder]: For 86019/86019 co-relation queries the response was YES. [2022-12-13 19:58:03,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72899 conditions, 19054 events. 14085/19054 cut-off events. For 86019/86019 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 94918 event pairs, 2922 based on Foata normal form. 364/19418 useless extension candidates. Maximal degree in co-relation 72872. Up to 13721 conditions per place. [2022-12-13 19:58:03,300 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 99 selfloop transitions, 31 changer transitions 41/171 dead transitions. [2022-12-13 19:58:03,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 171 transitions, 1454 flow [2022-12-13 19:58:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:58:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:58:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1252 transitions. [2022-12-13 19:58:03,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4890625 [2022-12-13 19:58:03,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1252 transitions. [2022-12-13 19:58:03,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1252 transitions. [2022-12-13 19:58:03,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:03,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1252 transitions. [2022-12-13 19:58:03,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:03,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 256.0) internal successors, (2816), 11 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:03,308 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 256.0) internal successors, (2816), 11 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:03,308 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 380 flow. Second operand 10 states and 1252 transitions. [2022-12-13 19:58:03,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 171 transitions, 1454 flow [2022-12-13 19:58:03,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 171 transitions, 1358 flow, removed 28 selfloop flow, removed 4 redundant places. [2022-12-13 19:58:03,428 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 597 flow [2022-12-13 19:58:03,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=597, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2022-12-13 19:58:03,428 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2022-12-13 19:58:03,428 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 597 flow [2022-12-13 19:58:03,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.42857142857143) internal successors, (787), 7 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:03,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:03,429 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:03,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:58:03,429 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -879104275, now seen corresponding path program 3 times [2022-12-13 19:58:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:03,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785365230] [2022-12-13 19:58:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:03,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:04,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785365230] [2022-12-13 19:58:04,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785365230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:04,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:04,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:58:04,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525634669] [2022-12-13 19:58:04,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:04,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:58:04,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:58:04,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:58:04,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 256 [2022-12-13 19:58:04,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 597 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:04,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:04,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 256 [2022-12-13 19:58:04,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:06,711 INFO L130 PetriNetUnfolder]: 15412/20851 cut-off events. [2022-12-13 19:58:06,711 INFO L131 PetriNetUnfolder]: For 136030/136030 co-relation queries the response was YES. [2022-12-13 19:58:06,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98661 conditions, 20851 events. 15412/20851 cut-off events. For 136030/136030 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 106338 event pairs, 2333 based on Foata normal form. 382/21233 useless extension candidates. Maximal degree in co-relation 98629. Up to 13467 conditions per place. [2022-12-13 19:58:06,822 INFO L137 encePairwiseOnDemand]: 243/256 looper letters, 116 selfloop transitions, 34 changer transitions 35/185 dead transitions. [2022-12-13 19:58:06,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 185 transitions, 1795 flow [2022-12-13 19:58:06,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:58:06,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:58:06,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1248 transitions. [2022-12-13 19:58:06,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4875 [2022-12-13 19:58:06,826 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1248 transitions. [2022-12-13 19:58:06,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1248 transitions. [2022-12-13 19:58:06,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:06,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1248 transitions. [2022-12-13 19:58:06,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 124.8) internal successors, (1248), 10 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:06,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 256.0) internal successors, (2816), 11 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:06,832 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 256.0) internal successors, (2816), 11 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:06,832 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 597 flow. Second operand 10 states and 1248 transitions. [2022-12-13 19:58:06,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 185 transitions, 1795 flow [2022-12-13 19:58:07,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 185 transitions, 1578 flow, removed 85 selfloop flow, removed 8 redundant places. [2022-12-13 19:58:07,489 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 768 flow [2022-12-13 19:58:07,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=768, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2022-12-13 19:58:07,489 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2022-12-13 19:58:07,489 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 768 flow [2022-12-13 19:58:07,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:07,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:07,490 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:07,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:58:07,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1876859961, now seen corresponding path program 4 times [2022-12-13 19:58:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:07,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185264135] [2022-12-13 19:58:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:07,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:07,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:07,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185264135] [2022-12-13 19:58:07,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185264135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:07,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:07,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:58:07,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117096483] [2022-12-13 19:58:07,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:07,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:58:07,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:58:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:58:07,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 256 [2022-12-13 19:58:07,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 768 flow. Second operand has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:07,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:07,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 256 [2022-12-13 19:58:07,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:10,720 INFO L130 PetriNetUnfolder]: 17674/23963 cut-off events. [2022-12-13 19:58:10,720 INFO L131 PetriNetUnfolder]: For 172962/172962 co-relation queries the response was YES. [2022-12-13 19:58:10,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119989 conditions, 23963 events. 17674/23963 cut-off events. For 172962/172962 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 125862 event pairs, 2640 based on Foata normal form. 358/24321 useless extension candidates. Maximal degree in co-relation 119955. Up to 15829 conditions per place. [2022-12-13 19:58:10,837 INFO L137 encePairwiseOnDemand]: 242/256 looper letters, 139 selfloop transitions, 67 changer transitions 26/232 dead transitions. [2022-12-13 19:58:10,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 232 transitions, 2326 flow [2022-12-13 19:58:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:58:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:58:10,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1235 transitions. [2022-12-13 19:58:10,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.482421875 [2022-12-13 19:58:10,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1235 transitions. [2022-12-13 19:58:10,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1235 transitions. [2022-12-13 19:58:10,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:10,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1235 transitions. [2022-12-13 19:58:10,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.5) internal successors, (1235), 10 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:10,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 256.0) internal successors, (2816), 11 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:10,887 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 256.0) internal successors, (2816), 11 states have internal predecessors, (2816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:10,888 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 768 flow. Second operand 10 states and 1235 transitions. [2022-12-13 19:58:10,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 232 transitions, 2326 flow [2022-12-13 19:58:11,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 232 transitions, 2165 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-12-13 19:58:11,759 INFO L231 Difference]: Finished difference. Result has 83 places, 125 transitions, 1344 flow [2022-12-13 19:58:11,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1344, PETRI_PLACES=83, PETRI_TRANSITIONS=125} [2022-12-13 19:58:11,759 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2022-12-13 19:58:11,760 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 125 transitions, 1344 flow [2022-12-13 19:58:11,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.42857142857143) internal successors, (773), 7 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:11,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:11,760 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:58:11,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash 458809535, now seen corresponding path program 5 times [2022-12-13 19:58:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:11,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002271041] [2022-12-13 19:58:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:12,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:12,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002271041] [2022-12-13 19:58:12,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002271041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:12,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:12,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:58:12,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034645294] [2022-12-13 19:58:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:58:12,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:12,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:58:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:58:12,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 256 [2022-12-13 19:58:12,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 125 transitions, 1344 flow. Second operand has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:12,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:12,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 256 [2022-12-13 19:58:12,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:14,724 INFO L130 PetriNetUnfolder]: 15315/21605 cut-off events. [2022-12-13 19:58:14,724 INFO L131 PetriNetUnfolder]: For 226906/229055 co-relation queries the response was YES. [2022-12-13 19:58:14,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127882 conditions, 21605 events. 15315/21605 cut-off events. For 226906/229055 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 125812 event pairs, 2714 based on Foata normal form. 1454/22739 useless extension candidates. Maximal degree in co-relation 127847. Up to 11156 conditions per place. [2022-12-13 19:58:14,851 INFO L137 encePairwiseOnDemand]: 247/256 looper letters, 96 selfloop transitions, 55 changer transitions 19/193 dead transitions. [2022-12-13 19:58:14,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 193 transitions, 2269 flow [2022-12-13 19:58:14,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:58:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 19:58:14,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1058 transitions. [2022-12-13 19:58:14,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5166015625 [2022-12-13 19:58:14,853 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1058 transitions. [2022-12-13 19:58:14,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1058 transitions. [2022-12-13 19:58:14,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:14,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1058 transitions. [2022-12-13 19:58:14,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.25) internal successors, (1058), 8 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:14,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:14,857 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:14,857 INFO L175 Difference]: Start difference. First operand has 83 places, 125 transitions, 1344 flow. Second operand 8 states and 1058 transitions. [2022-12-13 19:58:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 193 transitions, 2269 flow [2022-12-13 19:58:15,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 193 transitions, 2112 flow, removed 66 selfloop flow, removed 5 redundant places. [2022-12-13 19:58:15,500 INFO L231 Difference]: Finished difference. Result has 86 places, 129 transitions, 1483 flow [2022-12-13 19:58:15,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1483, PETRI_PLACES=86, PETRI_TRANSITIONS=129} [2022-12-13 19:58:15,501 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2022-12-13 19:58:15,501 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 129 transitions, 1483 flow [2022-12-13 19:58:15,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:15,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:15,501 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:15,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:58:15,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:15,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash -291772616, now seen corresponding path program 1 times [2022-12-13 19:58:15,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:15,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248698656] [2022-12-13 19:58:15,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:15,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:15,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:15,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248698656] [2022-12-13 19:58:15,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248698656] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:15,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:15,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:58:15,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956882159] [2022-12-13 19:58:15,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:15,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:58:15,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:15,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:58:15,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:58:15,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 256 [2022-12-13 19:58:15,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 129 transitions, 1483 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:15,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:15,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 256 [2022-12-13 19:58:15,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:17,246 INFO L130 PetriNetUnfolder]: 8389/12086 cut-off events. [2022-12-13 19:58:17,246 INFO L131 PetriNetUnfolder]: For 182058/184801 co-relation queries the response was YES. [2022-12-13 19:58:17,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76294 conditions, 12086 events. 8389/12086 cut-off events. For 182058/184801 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 69489 event pairs, 1616 based on Foata normal form. 1402/13082 useless extension candidates. Maximal degree in co-relation 76258. Up to 9221 conditions per place. [2022-12-13 19:58:17,333 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 146 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2022-12-13 19:58:17,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 178 transitions, 2341 flow [2022-12-13 19:58:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:58:17,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:58:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2022-12-13 19:58:17,335 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.52734375 [2022-12-13 19:58:17,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2022-12-13 19:58:17,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2022-12-13 19:58:17,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:17,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2022-12-13 19:58:17,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:17,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:17,337 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:17,337 INFO L175 Difference]: Start difference. First operand has 86 places, 129 transitions, 1483 flow. Second operand 3 states and 405 transitions. [2022-12-13 19:58:17,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 178 transitions, 2341 flow [2022-12-13 19:58:17,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 178 transitions, 2252 flow, removed 33 selfloop flow, removed 5 redundant places. [2022-12-13 19:58:17,455 INFO L231 Difference]: Finished difference. Result has 82 places, 129 transitions, 1416 flow [2022-12-13 19:58:17,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1416, PETRI_PLACES=82, PETRI_TRANSITIONS=129} [2022-12-13 19:58:17,456 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2022-12-13 19:58:17,456 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 129 transitions, 1416 flow [2022-12-13 19:58:17,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:17,457 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:17,457 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:17,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:58:17,457 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:17,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:17,458 INFO L85 PathProgramCache]: Analyzing trace with hash 390503125, now seen corresponding path program 1 times [2022-12-13 19:58:17,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:17,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646351891] [2022-12-13 19:58:17,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:17,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:17,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:17,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:17,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646351891] [2022-12-13 19:58:17,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646351891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:17,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:17,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:58:17,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288716442] [2022-12-13 19:58:17,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:58:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:58:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:58:17,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 256 [2022-12-13 19:58:17,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 129 transitions, 1416 flow. Second operand has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:17,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:17,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 256 [2022-12-13 19:58:17,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:18,454 INFO L130 PetriNetUnfolder]: 4068/6177 cut-off events. [2022-12-13 19:58:18,454 INFO L131 PetriNetUnfolder]: For 72550/74144 co-relation queries the response was YES. [2022-12-13 19:58:18,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38411 conditions, 6177 events. 4068/6177 cut-off events. For 72550/74144 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 34713 event pairs, 654 based on Foata normal form. 1080/7071 useless extension candidates. Maximal degree in co-relation 38376. Up to 2529 conditions per place. [2022-12-13 19:58:18,483 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 171 selfloop transitions, 9 changer transitions 0/204 dead transitions. [2022-12-13 19:58:18,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 204 transitions, 2602 flow [2022-12-13 19:58:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:58:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:58:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2022-12-13 19:58:18,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.529296875 [2022-12-13 19:58:18,485 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2022-12-13 19:58:18,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2022-12-13 19:58:18,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:18,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2022-12-13 19:58:18,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:18,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:18,487 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:18,487 INFO L175 Difference]: Start difference. First operand has 82 places, 129 transitions, 1416 flow. Second operand 4 states and 542 transitions. [2022-12-13 19:58:18,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 204 transitions, 2602 flow [2022-12-13 19:58:18,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 204 transitions, 2580 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:58:18,538 INFO L231 Difference]: Finished difference. Result has 84 places, 117 transitions, 1253 flow [2022-12-13 19:58:18,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1201, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1253, PETRI_PLACES=84, PETRI_TRANSITIONS=117} [2022-12-13 19:58:18,539 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 39 predicate places. [2022-12-13 19:58:18,539 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 117 transitions, 1253 flow [2022-12-13 19:58:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.25) internal successors, (497), 4 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:18,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:18,540 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:18,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:58:18,540 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash 344153925, now seen corresponding path program 1 times [2022-12-13 19:58:18,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:18,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900410690] [2022-12-13 19:58:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:18,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:18,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:18,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900410690] [2022-12-13 19:58:18,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900410690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:18,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:18,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:58:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507696019] [2022-12-13 19:58:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:18,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:58:18,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:58:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:58:18,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 256 [2022-12-13 19:58:18,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 117 transitions, 1253 flow. Second operand has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:18,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:18,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 256 [2022-12-13 19:58:18,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:19,295 INFO L130 PetriNetUnfolder]: 3076/4646 cut-off events. [2022-12-13 19:58:19,296 INFO L131 PetriNetUnfolder]: For 55763/57129 co-relation queries the response was YES. [2022-12-13 19:58:19,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29660 conditions, 4646 events. 3076/4646 cut-off events. For 55763/57129 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25459 event pairs, 509 based on Foata normal form. 687/5186 useless extension candidates. Maximal degree in co-relation 29623. Up to 1811 conditions per place. [2022-12-13 19:58:19,320 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 170 selfloop transitions, 13 changer transitions 0/205 dead transitions. [2022-12-13 19:58:19,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 205 transitions, 2601 flow [2022-12-13 19:58:19,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:58:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:58:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2022-12-13 19:58:19,322 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.52890625 [2022-12-13 19:58:19,322 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2022-12-13 19:58:19,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2022-12-13 19:58:19,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:19,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2022-12-13 19:58:19,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:19,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:19,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:19,324 INFO L175 Difference]: Start difference. First operand has 84 places, 117 transitions, 1253 flow. Second operand 5 states and 677 transitions. [2022-12-13 19:58:19,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 205 transitions, 2601 flow [2022-12-13 19:58:19,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 205 transitions, 2402 flow, removed 54 selfloop flow, removed 7 redundant places. [2022-12-13 19:58:19,383 INFO L231 Difference]: Finished difference. Result has 82 places, 103 transitions, 1001 flow [2022-12-13 19:58:19,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1001, PETRI_PLACES=82, PETRI_TRANSITIONS=103} [2022-12-13 19:58:19,383 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 37 predicate places. [2022-12-13 19:58:19,384 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 103 transitions, 1001 flow [2022-12-13 19:58:19,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:19,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:19,384 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:19,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:58:19,385 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:19,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1184263188, now seen corresponding path program 1 times [2022-12-13 19:58:19,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:19,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651867378] [2022-12-13 19:58:19,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:19,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:19,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:19,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651867378] [2022-12-13 19:58:19,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651867378] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:19,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:19,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:58:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966658531] [2022-12-13 19:58:19,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:19,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 19:58:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:58:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:58:19,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 256 [2022-12-13 19:58:19,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 103 transitions, 1001 flow. Second operand has 9 states, 9 states have (on average 110.77777777777777) internal successors, (997), 9 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:19,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:19,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 256 [2022-12-13 19:58:19,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:21,194 INFO L130 PetriNetUnfolder]: 5430/7994 cut-off events. [2022-12-13 19:58:21,194 INFO L131 PetriNetUnfolder]: For 57176/57176 co-relation queries the response was YES. [2022-12-13 19:58:21,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46455 conditions, 7994 events. 5430/7994 cut-off events. For 57176/57176 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 42003 event pairs, 281 based on Foata normal form. 14/8008 useless extension candidates. Maximal degree in co-relation 46421. Up to 4420 conditions per place. [2022-12-13 19:58:21,227 INFO L137 encePairwiseOnDemand]: 244/256 looper letters, 198 selfloop transitions, 30 changer transitions 121/349 dead transitions. [2022-12-13 19:58:21,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 349 transitions, 3933 flow [2022-12-13 19:58:21,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:58:21,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:58:21,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1477 transitions. [2022-12-13 19:58:21,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4807942708333333 [2022-12-13 19:58:21,229 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1477 transitions. [2022-12-13 19:58:21,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1477 transitions. [2022-12-13 19:58:21,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:21,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1477 transitions. [2022-12-13 19:58:21,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 123.08333333333333) internal successors, (1477), 12 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:21,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:21,233 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:21,233 INFO L175 Difference]: Start difference. First operand has 82 places, 103 transitions, 1001 flow. Second operand 12 states and 1477 transitions. [2022-12-13 19:58:21,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 349 transitions, 3933 flow [2022-12-13 19:58:21,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 349 transitions, 3717 flow, removed 52 selfloop flow, removed 3 redundant places. [2022-12-13 19:58:21,392 INFO L231 Difference]: Finished difference. Result has 97 places, 113 transitions, 1195 flow [2022-12-13 19:58:21,392 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1195, PETRI_PLACES=97, PETRI_TRANSITIONS=113} [2022-12-13 19:58:21,392 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2022-12-13 19:58:21,392 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 113 transitions, 1195 flow [2022-12-13 19:58:21,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.77777777777777) internal successors, (997), 9 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:21,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:21,393 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:21,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:58:21,393 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1306225872, now seen corresponding path program 2 times [2022-12-13 19:58:21,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:21,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814401806] [2022-12-13 19:58:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:21,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:21,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:21,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814401806] [2022-12-13 19:58:21,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814401806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:21,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:21,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:58:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612494014] [2022-12-13 19:58:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:21,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:58:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:21,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:58:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:58:21,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 256 [2022-12-13 19:58:21,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 113 transitions, 1195 flow. Second operand has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:21,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:21,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 256 [2022-12-13 19:58:21,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:22,242 INFO L130 PetriNetUnfolder]: 3471/5231 cut-off events. [2022-12-13 19:58:22,243 INFO L131 PetriNetUnfolder]: For 59126/60141 co-relation queries the response was YES. [2022-12-13 19:58:22,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32896 conditions, 5231 events. 3471/5231 cut-off events. For 59126/60141 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 29619 event pairs, 451 based on Foata normal form. 379/5453 useless extension candidates. Maximal degree in co-relation 32861. Up to 2103 conditions per place. [2022-12-13 19:58:22,263 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 153 selfloop transitions, 17 changer transitions 33/218 dead transitions. [2022-12-13 19:58:22,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 218 transitions, 2808 flow [2022-12-13 19:58:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:58:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:58:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 797 transitions. [2022-12-13 19:58:22,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5188802083333334 [2022-12-13 19:58:22,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 797 transitions. [2022-12-13 19:58:22,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 797 transitions. [2022-12-13 19:58:22,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:22,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 797 transitions. [2022-12-13 19:58:22,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:22,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:22,267 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:22,267 INFO L175 Difference]: Start difference. First operand has 97 places, 113 transitions, 1195 flow. Second operand 6 states and 797 transitions. [2022-12-13 19:58:22,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 218 transitions, 2808 flow [2022-12-13 19:58:22,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 218 transitions, 2516 flow, removed 56 selfloop flow, removed 7 redundant places. [2022-12-13 19:58:22,379 INFO L231 Difference]: Finished difference. Result has 93 places, 89 transitions, 845 flow [2022-12-13 19:58:22,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=845, PETRI_PLACES=93, PETRI_TRANSITIONS=89} [2022-12-13 19:58:22,379 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2022-12-13 19:58:22,379 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 89 transitions, 845 flow [2022-12-13 19:58:22,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 123.66666666666667) internal successors, (742), 6 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:22,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:22,380 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:22,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:58:22,380 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1584503291, now seen corresponding path program 1 times [2022-12-13 19:58:22,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:22,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937924585] [2022-12-13 19:58:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:22,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:22,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:22,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937924585] [2022-12-13 19:58:22,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937924585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:22,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:22,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:58:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780189177] [2022-12-13 19:58:22,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:22,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:58:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:58:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:58:22,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 256 [2022-12-13 19:58:22,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 89 transitions, 845 flow. Second operand has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:22,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:22,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 256 [2022-12-13 19:58:22,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:23,544 INFO L130 PetriNetUnfolder]: 4047/6059 cut-off events. [2022-12-13 19:58:23,544 INFO L131 PetriNetUnfolder]: For 42788/43014 co-relation queries the response was YES. [2022-12-13 19:58:23,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34714 conditions, 6059 events. 4047/6059 cut-off events. For 42788/43014 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33620 event pairs, 528 based on Foata normal form. 227/6280 useless extension candidates. Maximal degree in co-relation 34678. Up to 3154 conditions per place. [2022-12-13 19:58:23,564 INFO L137 encePairwiseOnDemand]: 248/256 looper letters, 112 selfloop transitions, 8 changer transitions 69/192 dead transitions. [2022-12-13 19:58:23,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 192 transitions, 2158 flow [2022-12-13 19:58:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:58:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:58:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 845 transitions. [2022-12-13 19:58:23,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47154017857142855 [2022-12-13 19:58:23,565 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 845 transitions. [2022-12-13 19:58:23,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 845 transitions. [2022-12-13 19:58:23,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:23,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 845 transitions. [2022-12-13 19:58:23,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:23,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:23,568 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:23,568 INFO L175 Difference]: Start difference. First operand has 93 places, 89 transitions, 845 flow. Second operand 7 states and 845 transitions. [2022-12-13 19:58:23,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 192 transitions, 2158 flow [2022-12-13 19:58:23,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 192 transitions, 1874 flow, removed 91 selfloop flow, removed 9 redundant places. [2022-12-13 19:58:23,683 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 649 flow [2022-12-13 19:58:23,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=649, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2022-12-13 19:58:23,683 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 47 predicate places. [2022-12-13 19:58:23,683 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 649 flow [2022-12-13 19:58:23,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:23,683 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:23,684 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:58:23,684 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:23,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:23,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1642033827, now seen corresponding path program 2 times [2022-12-13 19:58:23,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:23,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65392350] [2022-12-13 19:58:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:23,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:23,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:23,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65392350] [2022-12-13 19:58:23,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65392350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:23,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:23,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:58:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514283615] [2022-12-13 19:58:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:23,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:58:23,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:23,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:58:23,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:58:24,009 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 256 [2022-12-13 19:58:24,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 649 flow. Second operand has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:24,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:24,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 256 [2022-12-13 19:58:24,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:24,977 INFO L130 PetriNetUnfolder]: 4580/7053 cut-off events. [2022-12-13 19:58:24,977 INFO L131 PetriNetUnfolder]: For 30418/30723 co-relation queries the response was YES. [2022-12-13 19:58:24,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34008 conditions, 7053 events. 4580/7053 cut-off events. For 30418/30723 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 42361 event pairs, 716 based on Foata normal form. 306/7336 useless extension candidates. Maximal degree in co-relation 33978. Up to 3114 conditions per place. [2022-12-13 19:58:24,995 INFO L137 encePairwiseOnDemand]: 249/256 looper letters, 56 selfloop transitions, 3 changer transitions 109/170 dead transitions. [2022-12-13 19:58:24,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 170 transitions, 1710 flow [2022-12-13 19:58:24,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:58:24,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:58:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 838 transitions. [2022-12-13 19:58:24,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46763392857142855 [2022-12-13 19:58:24,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 838 transitions. [2022-12-13 19:58:24,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 838 transitions. [2022-12-13 19:58:24,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:24,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 838 transitions. [2022-12-13 19:58:24,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:24,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:24,999 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:24,999 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 649 flow. Second operand 7 states and 838 transitions. [2022-12-13 19:58:24,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 170 transitions, 1710 flow [2022-12-13 19:58:25,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 170 transitions, 1649 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-12-13 19:58:25,149 INFO L231 Difference]: Finished difference. Result has 93 places, 49 transitions, 324 flow [2022-12-13 19:58:25,149 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=93, PETRI_TRANSITIONS=49} [2022-12-13 19:58:25,150 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 48 predicate places. [2022-12-13 19:58:25,150 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 49 transitions, 324 flow [2022-12-13 19:58:25,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:25,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:25,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:25,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:58:25,150 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:25,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:25,150 INFO L85 PathProgramCache]: Analyzing trace with hash -229496477, now seen corresponding path program 3 times [2022-12-13 19:58:25,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:25,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432144329] [2022-12-13 19:58:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:26,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:26,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:26,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432144329] [2022-12-13 19:58:26,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432144329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:26,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:26,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:58:26,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459476799] [2022-12-13 19:58:26,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:26,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:58:26,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:26,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:58:26,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:58:26,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2022-12-13 19:58:26,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 49 transitions, 324 flow. Second operand has 11 states, 11 states have (on average 109.63636363636364) internal successors, (1206), 11 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:26,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:26,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2022-12-13 19:58:26,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:26,990 INFO L130 PetriNetUnfolder]: 1813/2831 cut-off events. [2022-12-13 19:58:26,990 INFO L131 PetriNetUnfolder]: For 8946/8946 co-relation queries the response was YES. [2022-12-13 19:58:26,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12500 conditions, 2831 events. 1813/2831 cut-off events. For 8946/8946 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13726 event pairs, 220 based on Foata normal form. 1/2832 useless extension candidates. Maximal degree in co-relation 12472. Up to 1409 conditions per place. [2022-12-13 19:58:26,998 INFO L137 encePairwiseOnDemand]: 246/256 looper letters, 94 selfloop transitions, 14 changer transitions 26/134 dead transitions. [2022-12-13 19:58:26,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 134 transitions, 1118 flow [2022-12-13 19:58:26,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 19:58:26,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 19:58:27,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 941 transitions. [2022-12-13 19:58:27,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45947265625 [2022-12-13 19:58:27,000 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 941 transitions. [2022-12-13 19:58:27,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 941 transitions. [2022-12-13 19:58:27,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:27,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 941 transitions. [2022-12-13 19:58:27,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:27,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:27,003 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:27,003 INFO L175 Difference]: Start difference. First operand has 93 places, 49 transitions, 324 flow. Second operand 8 states and 941 transitions. [2022-12-13 19:58:27,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 134 transitions, 1118 flow [2022-12-13 19:58:27,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 134 transitions, 998 flow, removed 45 selfloop flow, removed 17 redundant places. [2022-12-13 19:58:27,049 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 358 flow [2022-12-13 19:58:27,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2022-12-13 19:58:27,049 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 29 predicate places. [2022-12-13 19:58:27,050 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 358 flow [2022-12-13 19:58:27,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.63636363636364) internal successors, (1206), 11 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:27,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:27,050 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:27,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:58:27,050 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1453010023, now seen corresponding path program 4 times [2022-12-13 19:58:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:27,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184292424] [2022-12-13 19:58:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:27,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:58:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:58:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:58:27,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184292424] [2022-12-13 19:58:27,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184292424] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:58:27,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:58:27,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:58:27,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375657651] [2022-12-13 19:58:27,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:58:27,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:58:27,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:58:27,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:58:27,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:58:27,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 256 [2022-12-13 19:58:27,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 358 flow. Second operand has 11 states, 11 states have (on average 120.36363636363636) internal successors, (1324), 11 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:27,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:58:27,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 256 [2022-12-13 19:58:27,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:58:28,573 INFO L130 PetriNetUnfolder]: 1765/2812 cut-off events. [2022-12-13 19:58:28,573 INFO L131 PetriNetUnfolder]: For 8134/8206 co-relation queries the response was YES. [2022-12-13 19:58:28,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12058 conditions, 2812 events. 1765/2812 cut-off events. For 8134/8206 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14377 event pairs, 339 based on Foata normal form. 23/2797 useless extension candidates. Maximal degree in co-relation 12036. Up to 1246 conditions per place. [2022-12-13 19:58:28,580 INFO L137 encePairwiseOnDemand]: 250/256 looper letters, 58 selfloop transitions, 5 changer transitions 42/108 dead transitions. [2022-12-13 19:58:28,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 108 transitions, 853 flow [2022-12-13 19:58:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:58:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 19:58:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 889 transitions. [2022-12-13 19:58:28,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49609375 [2022-12-13 19:58:28,582 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 889 transitions. [2022-12-13 19:58:28,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 889 transitions. [2022-12-13 19:58:28,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:58:28,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 889 transitions. [2022-12-13 19:58:28,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:28,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:28,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:28,584 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 358 flow. Second operand 7 states and 889 transitions. [2022-12-13 19:58:28,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 108 transitions, 853 flow [2022-12-13 19:58:28,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 108 transitions, 840 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-12-13 19:58:28,621 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 323 flow [2022-12-13 19:58:28,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=77, PETRI_TRANSITIONS=50} [2022-12-13 19:58:28,621 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2022-12-13 19:58:28,621 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 323 flow [2022-12-13 19:58:28,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 120.36363636363636) internal successors, (1324), 11 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:58:28,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:58:28,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:28,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:58:28,622 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 19:58:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:58:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash 521224397, now seen corresponding path program 5 times [2022-12-13 19:58:28,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:58:28,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311042590] [2022-12-13 19:58:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:58:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:58:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:58:28,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:58:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:58:28,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:58:28,695 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:58:28,696 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 19:58:28,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 19:58:28,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 19:58:28,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 19:58:28,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 19:58:28,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-13 19:58:28,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 19:58:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:58:28,698 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:58:28,702 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:58:28,703 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:58:28,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:58:28 BasicIcfg [2022-12-13 19:58:28,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:58:28,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:58:28,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:58:28,751 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:58:28,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:57:47" (3/4) ... [2022-12-13 19:58:28,753 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 19:58:28,807 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:58:28,807 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:58:28,808 INFO L158 Benchmark]: Toolchain (without parser) took 42559.22ms. Allocated memory was 130.0MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 94.4MB in the beginning and 863.6MB in the end (delta: -769.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-12-13 19:58:28,808 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:58:28,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.18ms. Allocated memory is still 130.0MB. Free memory was 94.4MB in the beginning and 65.9MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 19:58:28,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.39ms. Allocated memory is still 130.0MB. Free memory was 65.9MB in the beginning and 63.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:58:28,809 INFO L158 Benchmark]: Boogie Preprocessor took 21.90ms. Allocated memory is still 130.0MB. Free memory was 63.3MB in the beginning and 61.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:58:28,809 INFO L158 Benchmark]: RCFGBuilder took 552.04ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 61.3MB in the beginning and 103.0MB in the end (delta: -41.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2022-12-13 19:58:28,810 INFO L158 Benchmark]: TraceAbstraction took 41517.55ms. Allocated memory was 157.3MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 102.1MB in the beginning and 880.4MB in the end (delta: -778.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-12-13 19:58:28,810 INFO L158 Benchmark]: Witness Printer took 56.32ms. Allocated memory is still 2.3GB. Free memory was 880.4MB in the beginning and 863.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 19:58:28,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.18ms. Allocated memory is still 130.0MB. Free memory was 94.4MB in the beginning and 65.9MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.39ms. Allocated memory is still 130.0MB. Free memory was 65.9MB in the beginning and 63.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.90ms. Allocated memory is still 130.0MB. Free memory was 63.3MB in the beginning and 61.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 552.04ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 61.3MB in the beginning and 103.0MB in the end (delta: -41.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 41517.55ms. Allocated memory was 157.3MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 102.1MB in the beginning and 880.4MB in the end (delta: -778.3MB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 56.32ms. Allocated memory is still 2.3GB. Free memory was 880.4MB in the beginning and 863.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 147 PlacesBefore, 45 PlacesAfterwards, 136 TransitionsBefore, 33 TransitionsAfterwards, 3504 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 116 TotalNumberOfCompositions, 9952 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4565, independent: 4312, independent conditional: 0, independent unconditional: 4312, dependent: 253, dependent conditional: 0, dependent unconditional: 253, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1852, independent: 1819, independent conditional: 0, independent unconditional: 1819, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4565, independent: 2493, independent conditional: 0, independent unconditional: 2493, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 1852, unknown conditional: 0, unknown unconditional: 1852] , Statistics on independence cache: Total cache size (in pairs): 177, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L714] 0 int __unbuffered_p2_EAX = 0; [L716] 0 int __unbuffered_p3_EAX = 0; [L718] 0 int __unbuffered_p3_EBX = 0; [L720] 0 int a = 0; [L722] 0 int b = 0; [L723] 0 _Bool main$tmp_guard0; [L724] 0 _Bool main$tmp_guard1; [L726] 0 int x = 0; [L727] 0 _Bool x$flush_delayed; [L728] 0 int x$mem_tmp; [L729] 0 _Bool x$r_buff0_thd0; [L730] 0 _Bool x$r_buff0_thd1; [L731] 0 _Bool x$r_buff0_thd2; [L732] 0 _Bool x$r_buff0_thd3; [L733] 0 _Bool x$r_buff0_thd4; [L734] 0 _Bool x$r_buff1_thd0; [L735] 0 _Bool x$r_buff1_thd1; [L736] 0 _Bool x$r_buff1_thd2; [L737] 0 _Bool x$r_buff1_thd3; [L738] 0 _Bool x$r_buff1_thd4; [L739] 0 _Bool x$read_delayed; [L740] 0 int *x$read_delayed_var; [L741] 0 int x$w_buff0; [L742] 0 _Bool x$w_buff0_used; [L743] 0 int x$w_buff1; [L744] 0 _Bool x$w_buff1_used; [L746] 0 int y = 0; [L748] 0 int z = 0; [L749] 0 _Bool weak$$choice0; [L750] 0 _Bool weak$$choice2; [L858] 0 pthread_t t993; [L859] FCALL, FORK 0 pthread_create(&t993, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t993, ((void *)0), P0, ((void *)0))=-3, t993={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L860] 0 pthread_t t994; [L861] FCALL, FORK 0 pthread_create(&t994, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t994, ((void *)0), P1, ((void *)0))=-2, t993={5:0}, t994={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L862] 0 pthread_t t995; [L863] FCALL, FORK 0 pthread_create(&t995, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t995, ((void *)0), P2, ((void *)0))=-1, t993={5:0}, t994={6:0}, t995={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L864] 0 pthread_t t996; [L865] FCALL, FORK 0 pthread_create(&t996, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t996, ((void *)0), P3, ((void *)0))=0, t993={5:0}, t994={6:0}, t995={7:0}, t996={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L774] 2 x$w_buff1 = x$w_buff0 [L775] 2 x$w_buff0 = 2 [L776] 2 x$w_buff1_used = x$w_buff0_used [L777] 2 x$w_buff0_used = (_Bool)1 [L778] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L778] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L779] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L780] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L781] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L782] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L783] 2 x$r_buff1_thd4 = x$r_buff0_thd4 [L784] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L787] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0, z=0] [L804] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L807] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=0] [L824] 4 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L827] 4 a = 1 [L830] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L833] 4 __unbuffered_p3_EBX = b VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L754] 1 b = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L757] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L790] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L791] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L792] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L793] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L794] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L797] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L799] 2 return 0; [L760] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L761] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L762] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L763] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L764] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L810] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L811] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L812] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L813] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L814] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L767] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L769] 1 return 0; [L836] 4 x = x$w_buff0_used && x$r_buff0_thd4 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd4 ? x$w_buff1 : x) [L837] 4 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$w_buff0_used [L838] 4 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$w_buff1_used [L839] 4 x$r_buff0_thd4 = x$w_buff0_used && x$r_buff0_thd4 ? (_Bool)0 : x$r_buff0_thd4 [L840] 4 x$r_buff1_thd4 = x$w_buff0_used && x$r_buff0_thd4 || x$w_buff1_used && x$r_buff1_thd4 ? (_Bool)0 : x$r_buff1_thd4 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L817] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L819] 3 return 0; [L843] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L845] 4 return 0; [L867] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L869] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L869] RET 0 assume_abort_if_not(main$tmp_guard0) [L871] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L872] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L873] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L874] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L875] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, main$tmp_guard0=1, main$tmp_guard1=0, t993={5:0}, t994={6:0}, t995={7:0}, t996={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] [L878] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L879] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L880] 0 x$flush_delayed = weak$$choice2 [L881] 0 x$mem_tmp = x [L882] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L883] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L884] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L885] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L886] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L887] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L888] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L889] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) [L890] 0 x = x$flush_delayed ? x$mem_tmp : x [L891] 0 x$flush_delayed = (_Bool)0 [L893] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, b=1, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff0_thd4=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$r_buff1_thd4=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=1, z=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 861]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 865]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 863]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 859]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 178 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 41.4s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 30.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1973 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1730 mSDsluCounter, 1542 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1409 mSDsCounter, 455 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4600 IncrementalHoareTripleChecker+Invalid, 5055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 455 mSolverCounterUnsat, 133 mSDtfsCounter, 4600 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1483occurred in iteration=11, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 416 NumberOfCodeBlocks, 416 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 367 ConstructedInterpolants, 0 QuantifiedInterpolants, 4141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 19:58:28,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d338b8e-3c60-4c66-b0a2-b059f639c6c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE