./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_tso.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_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/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_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/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_bb517852-e40c-499d-a376-bb7262d55305/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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- 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 14:10:42,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:10:42,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:10:42,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:10:42,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:10:42,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:10:42,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:10:42,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:10:42,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:10:42,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:10:42,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:10:42,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:10:42,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:10:42,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:10:42,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:10:42,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:10:42,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:10:42,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:10:42,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:10:42,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:10:42,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:10:42,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:10:42,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:10:42,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:10:42,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:10:42,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:10:42,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:10:42,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:10:42,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:10:42,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:10:42,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:10:42,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:10:42,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:10:42,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:10:42,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:10:42,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:10:42,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:10:42,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:10:42,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:10:42,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:10:42,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:10:42,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:10:42,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:10:42,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:10:42,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:10:42,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:10:42,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:10:42,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:10:42,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:10:42,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:10:42,192 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:10:42,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:10:42,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:10:42,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:10:42,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:10:42,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:10:42,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:10:42,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:10:42,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:10:42,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:10:42,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:10:42,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:10:42,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:10:42,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:10:42,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:10:42,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:10:42,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:10:42,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:10:42,195 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:10:42,195 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_bb517852-e40c-499d-a376-bb7262d55305/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2022-12-13 14:10:42,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:10:42,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:10:42,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:10:42,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:10:42,382 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:10:42,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2022-12-13 14:10:44,934 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:10:45,129 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:10:45,129 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2022-12-13 14:10:45,138 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/data/1ee59bba7/be0911adcef94bd69c641fda06da5656/FLAG9ecd6c364 [2022-12-13 14:10:45,510 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/data/1ee59bba7/be0911adcef94bd69c641fda06da5656 [2022-12-13 14:10:45,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:10:45,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:10:45,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:10:45,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:10:45,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:10:45,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec99698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45, skipping insertion in model container [2022-12-13 14:10:45,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:10:45,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:10:45,660 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_bb517852-e40c-499d-a376-bb7262d55305/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2022-12-13 14:10:45,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,746 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,750 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,751 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,757 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:10:45,765 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:10:45,773 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_bb517852-e40c-499d-a376-bb7262d55305/sv-benchmarks/c/pthread-wmm/safe012_tso.i[945,958] [2022-12-13 14:10:45,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,791 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,793 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,794 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:10:45,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:10:45,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:10:45,817 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:10:45,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45 WrapperNode [2022-12-13 14:10:45,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:10:45,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:10:45,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:10:45,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:10:45,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,846 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2022-12-13 14:10:45,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:10:45,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:10:45,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:10:45,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:10:45,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,861 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:10:45,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:10:45,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:10:45,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:10:45,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (1/1) ... [2022-12-13 14:10:45,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:10:45,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:10:45,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:10:45,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:10:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:10:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:10:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:10:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:10:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:10:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 14:10:45,918 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 14:10:45,918 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 14:10:45,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 14:10:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 14:10:45,919 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 14:10:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:10:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:10:45,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:10:45,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:10:45,921 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 14:10:46,029 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:10:46,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:10:46,174 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:10:46,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:10:46,180 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:10:46,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:10:46 BoogieIcfgContainer [2022-12-13 14:10:46,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:10:46,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:10:46,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:10:46,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:10:46,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:10:45" (1/3) ... [2022-12-13 14:10:46,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f95ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:10:46, skipping insertion in model container [2022-12-13 14:10:46,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:10:45" (2/3) ... [2022-12-13 14:10:46,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35f95ecf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:10:46, skipping insertion in model container [2022-12-13 14:10:46,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:10:46" (3/3) ... [2022-12-13 14:10:46,192 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2022-12-13 14:10:46,201 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:10:46,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:10:46,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:10:46,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:10:46,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 14:10:46,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2022-12-13 14:10:46,322 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2022-12-13 14:10:46,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:10:46,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-13 14:10:46,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2022-12-13 14:10:46,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2022-12-13 14:10:46,334 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:10:46,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 76 transitions, 161 flow [2022-12-13 14:10:46,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 76 transitions, 161 flow [2022-12-13 14:10:46,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 161 flow [2022-12-13 14:10:46,365 INFO L130 PetriNetUnfolder]: 1/76 cut-off events. [2022-12-13 14:10:46,365 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:10:46,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 1/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 36 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 14:10:46,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-12-13 14:10:47,891 INFO L134 LiptonReduction]: Checked pairs total: 2275 [2022-12-13 14:10:47,891 INFO L136 LiptonReduction]: Total number of compositions: 65 [2022-12-13 14:10:47,904 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:10:47,909 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;@4fd985f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:10:47,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 14:10:47,913 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-12-13 14:10:47,913 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:10:47,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:47,914 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:47,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2097062557, now seen corresponding path program 1 times [2022-12-13 14:10:47,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:47,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271691922] [2022-12-13 14:10:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:48,222 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 14:10:48,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:48,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271691922] [2022-12-13 14:10:48,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271691922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:48,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:48,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:10:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752990518] [2022-12-13 14:10:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:48,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:10:48,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:48,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:10:48,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:10:48,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2022-12-13 14:10:48,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:48,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2022-12-13 14:10:48,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:48,322 INFO L130 PetriNetUnfolder]: 143/262 cut-off events. [2022-12-13 14:10:48,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:10:48,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 262 events. 143/262 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1051 event pairs, 53 based on Foata normal form. 9/267 useless extension candidates. Maximal degree in co-relation 522. Up to 154 conditions per place. [2022-12-13 14:10:48,324 INFO L137 encePairwiseOnDemand]: 154/158 looper letters, 17 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2022-12-13 14:10:48,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 91 flow [2022-12-13 14:10:48,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:10:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:10:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-12-13 14:10:48,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5843881856540084 [2022-12-13 14:10:48,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-12-13 14:10:48,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-12-13 14:10:48,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:48,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-12-13 14:10:48,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,348 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 277 transitions. [2022-12-13 14:10:48,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 91 flow [2022-12-13 14:10:48,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 14:10:48,353 INFO L231 Difference]: Finished difference. Result has 27 places, 17 transitions, 48 flow [2022-12-13 14:10:48,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=17} [2022-12-13 14:10:48,358 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2022-12-13 14:10:48,358 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 17 transitions, 48 flow [2022-12-13 14:10:48,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:48,359 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:48,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:10:48,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash -584430452, now seen corresponding path program 1 times [2022-12-13 14:10:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:48,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465756601] [2022-12-13 14:10:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:48,518 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 14:10:48,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:48,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465756601] [2022-12-13 14:10:48,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465756601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:48,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:48,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:10:48,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658088222] [2022-12-13 14:10:48,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:48,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:10:48,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:48,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:10:48,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:10:48,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 158 [2022-12-13 14:10:48,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:48,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 158 [2022-12-13 14:10:48,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:48,640 INFO L130 PetriNetUnfolder]: 349/582 cut-off events. [2022-12-13 14:10:48,640 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 14:10:48,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 582 events. 349/582 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2661 event pairs, 59 based on Foata normal form. 32/606 useless extension candidates. Maximal degree in co-relation 1280. Up to 233 conditions per place. [2022-12-13 14:10:48,643 INFO L137 encePairwiseOnDemand]: 152/158 looper letters, 34 selfloop transitions, 9 changer transitions 2/46 dead transitions. [2022-12-13 14:10:48,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 46 transitions, 215 flow [2022-12-13 14:10:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:10:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:10:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 442 transitions. [2022-12-13 14:10:48,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5594936708860759 [2022-12-13 14:10:48,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 442 transitions. [2022-12-13 14:10:48,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 442 transitions. [2022-12-13 14:10:48,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:48,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 442 transitions. [2022-12-13 14:10:48,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,649 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 48 flow. Second operand 5 states and 442 transitions. [2022-12-13 14:10:48,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 46 transitions, 215 flow [2022-12-13 14:10:48,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:10:48,650 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 105 flow [2022-12-13 14:10:48,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 14:10:48,650 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2022-12-13 14:10:48,650 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 105 flow [2022-12-13 14:10:48,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:48,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:10:48,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:48,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash -938196234, now seen corresponding path program 1 times [2022-12-13 14:10:48,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:48,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329573826] [2022-12-13 14:10:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:48,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:48,726 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 14:10:48,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329573826] [2022-12-13 14:10:48,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329573826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:48,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:48,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:10:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32731715] [2022-12-13 14:10:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:48,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:10:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:10:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:10:48,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2022-12-13 14:10:48,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:48,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2022-12-13 14:10:48,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:48,822 INFO L130 PetriNetUnfolder]: 284/517 cut-off events. [2022-12-13 14:10:48,822 INFO L131 PetriNetUnfolder]: For 420/440 co-relation queries the response was YES. [2022-12-13 14:10:48,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 517 events. 284/517 cut-off events. For 420/440 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2559 event pairs, 107 based on Foata normal form. 22/520 useless extension candidates. Maximal degree in co-relation 1356. Up to 188 conditions per place. [2022-12-13 14:10:48,824 INFO L137 encePairwiseOnDemand]: 154/158 looper letters, 21 selfloop transitions, 5 changer transitions 6/34 dead transitions. [2022-12-13 14:10:48,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 192 flow [2022-12-13 14:10:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:10:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:10:48,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2022-12-13 14:10:48,826 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5712025316455697 [2022-12-13 14:10:48,826 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2022-12-13 14:10:48,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2022-12-13 14:10:48,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:48,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2022-12-13 14:10:48,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,828 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,828 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 105 flow. Second operand 4 states and 361 transitions. [2022-12-13 14:10:48,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 192 flow [2022-12-13 14:10:48,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:10:48,830 INFO L231 Difference]: Finished difference. Result has 37 places, 21 transitions, 108 flow [2022-12-13 14:10:48,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=37, PETRI_TRANSITIONS=21} [2022-12-13 14:10:48,830 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2022-12-13 14:10:48,830 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 21 transitions, 108 flow [2022-12-13 14:10:48,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:48,831 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:48,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:10:48,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash 612894239, now seen corresponding path program 1 times [2022-12-13 14:10:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:48,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422030659] [2022-12-13 14:10:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:48,905 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 14:10:48,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:48,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422030659] [2022-12-13 14:10:48,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422030659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:48,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:48,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:10:48,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992306214] [2022-12-13 14:10:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:48,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:10:48,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:10:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:10:48,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 158 [2022-12-13 14:10:48,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 21 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:48,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 158 [2022-12-13 14:10:48,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:48,964 INFO L130 PetriNetUnfolder]: 143/261 cut-off events. [2022-12-13 14:10:48,964 INFO L131 PetriNetUnfolder]: For 300/306 co-relation queries the response was YES. [2022-12-13 14:10:48,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 261 events. 143/261 cut-off events. For 300/306 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 974 event pairs, 70 based on Foata normal form. 6/257 useless extension candidates. Maximal degree in co-relation 789. Up to 208 conditions per place. [2022-12-13 14:10:48,965 INFO L137 encePairwiseOnDemand]: 155/158 looper letters, 22 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2022-12-13 14:10:48,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 29 transitions, 180 flow [2022-12-13 14:10:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:10:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:10:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2022-12-13 14:10:48,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2022-12-13 14:10:48,967 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2022-12-13 14:10:48,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2022-12-13 14:10:48,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:48,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2022-12-13 14:10:48,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,970 INFO L175 Difference]: Start difference. First operand has 37 places, 21 transitions, 108 flow. Second operand 3 states and 268 transitions. [2022-12-13 14:10:48,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 29 transitions, 180 flow [2022-12-13 14:10:48,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 159 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 14:10:48,973 INFO L231 Difference]: Finished difference. Result has 35 places, 21 transitions, 101 flow [2022-12-13 14:10:48,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=35, PETRI_TRANSITIONS=21} [2022-12-13 14:10:48,974 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2022-12-13 14:10:48,974 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 21 transitions, 101 flow [2022-12-13 14:10:48,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:48,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:48,974 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:48,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:10:48,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1821119159, now seen corresponding path program 1 times [2022-12-13 14:10:48,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:48,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054254219] [2022-12-13 14:10:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:48,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:49,085 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 14:10:49,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:49,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054254219] [2022-12-13 14:10:49,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054254219] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:49,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:49,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:10:49,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209205640] [2022-12-13 14:10:49,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:49,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:10:49,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:49,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:10:49,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:10:49,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 158 [2022-12-13 14:10:49,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 21 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:49,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 158 [2022-12-13 14:10:49,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:49,169 INFO L130 PetriNetUnfolder]: 217/370 cut-off events. [2022-12-13 14:10:49,169 INFO L131 PetriNetUnfolder]: For 418/420 co-relation queries the response was YES. [2022-12-13 14:10:49,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 370 events. 217/370 cut-off events. For 418/420 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1276 event pairs, 97 based on Foata normal form. 20/385 useless extension candidates. Maximal degree in co-relation 1064. Up to 195 conditions per place. [2022-12-13 14:10:49,170 INFO L137 encePairwiseOnDemand]: 154/158 looper letters, 18 selfloop transitions, 3 changer transitions 9/31 dead transitions. [2022-12-13 14:10:49,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 192 flow [2022-12-13 14:10:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:10:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:10:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2022-12-13 14:10:49,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5443037974683544 [2022-12-13 14:10:49,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2022-12-13 14:10:49,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2022-12-13 14:10:49,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:49,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2022-12-13 14:10:49,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,175 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,175 INFO L175 Difference]: Start difference. First operand has 35 places, 21 transitions, 101 flow. Second operand 4 states and 344 transitions. [2022-12-13 14:10:49,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 192 flow [2022-12-13 14:10:49,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:10:49,177 INFO L231 Difference]: Finished difference. Result has 38 places, 17 transitions, 84 flow [2022-12-13 14:10:49,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=17} [2022-12-13 14:10:49,177 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2022-12-13 14:10:49,177 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 17 transitions, 84 flow [2022-12-13 14:10:49,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.2) internal successors, (406), 5 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:49,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:49,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:10:49,178 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:49,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash 580786617, now seen corresponding path program 1 times [2022-12-13 14:10:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:49,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774013492] [2022-12-13 14:10:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:49,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:49,252 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 14:10:49,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:49,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774013492] [2022-12-13 14:10:49,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774013492] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:49,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:49,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:10:49,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580400495] [2022-12-13 14:10:49,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:49,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:10:49,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:49,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:10:49,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:10:49,258 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2022-12-13 14:10:49,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 17 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:49,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2022-12-13 14:10:49,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:49,287 INFO L130 PetriNetUnfolder]: 41/89 cut-off events. [2022-12-13 14:10:49,287 INFO L131 PetriNetUnfolder]: For 220/226 co-relation queries the response was YES. [2022-12-13 14:10:49,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 89 events. 41/89 cut-off events. For 220/226 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 231 event pairs, 17 based on Foata normal form. 4/88 useless extension candidates. Maximal degree in co-relation 286. Up to 71 conditions per place. [2022-12-13 14:10:49,288 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 17 selfloop transitions, 4 changer transitions 0/24 dead transitions. [2022-12-13 14:10:49,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 24 transitions, 153 flow [2022-12-13 14:10:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:10:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:10:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2022-12-13 14:10:49,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5717299578059072 [2022-12-13 14:10:49,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2022-12-13 14:10:49,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2022-12-13 14:10:49,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:49,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2022-12-13 14:10:49,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,291 INFO L175 Difference]: Start difference. First operand has 38 places, 17 transitions, 84 flow. Second operand 3 states and 271 transitions. [2022-12-13 14:10:49,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 24 transitions, 153 flow [2022-12-13 14:10:49,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 119 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-13 14:10:49,292 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 84 flow [2022-12-13 14:10:49,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2022-12-13 14:10:49,292 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2022-12-13 14:10:49,293 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 84 flow [2022-12-13 14:10:49,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:49,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:49,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:10:49,293 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:49,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash 82234789, now seen corresponding path program 1 times [2022-12-13 14:10:49,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:49,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78389583] [2022-12-13 14:10:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:49,367 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 14:10:49,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:49,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78389583] [2022-12-13 14:10:49,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78389583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:49,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:49,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:10:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876644685] [2022-12-13 14:10:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:10:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:49,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:10:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:10:49,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2022-12-13 14:10:49,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:49,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2022-12-13 14:10:49,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:49,413 INFO L130 PetriNetUnfolder]: 22/59 cut-off events. [2022-12-13 14:10:49,413 INFO L131 PetriNetUnfolder]: For 34/44 co-relation queries the response was YES. [2022-12-13 14:10:49,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 59 events. 22/59 cut-off events. For 34/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 116 event pairs, 5 based on Foata normal form. 10/66 useless extension candidates. Maximal degree in co-relation 185. Up to 31 conditions per place. [2022-12-13 14:10:49,414 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 18 selfloop transitions, 7 changer transitions 0/28 dead transitions. [2022-12-13 14:10:49,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 162 flow [2022-12-13 14:10:49,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:10:49,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:10:49,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2022-12-13 14:10:49,416 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5664556962025317 [2022-12-13 14:10:49,416 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 358 transitions. [2022-12-13 14:10:49,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 358 transitions. [2022-12-13 14:10:49,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:49,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 358 transitions. [2022-12-13 14:10:49,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,418 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,418 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 84 flow. Second operand 4 states and 358 transitions. [2022-12-13 14:10:49,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 162 flow [2022-12-13 14:10:49,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:10:49,418 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 120 flow [2022-12-13 14:10:49,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2022-12-13 14:10:49,419 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-13 14:10:49,419 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 120 flow [2022-12-13 14:10:49,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:49,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:10:49,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1745710790, now seen corresponding path program 1 times [2022-12-13 14:10:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:49,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669743025] [2022-12-13 14:10:49,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:49,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:49,496 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 14:10:49,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:49,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669743025] [2022-12-13 14:10:49,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669743025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:49,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:49,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:10:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415734710] [2022-12-13 14:10:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:49,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:10:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:10:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:10:49,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2022-12-13 14:10:49,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:49,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2022-12-13 14:10:49,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:49,542 INFO L130 PetriNetUnfolder]: 14/43 cut-off events. [2022-12-13 14:10:49,542 INFO L131 PetriNetUnfolder]: For 64/80 co-relation queries the response was YES. [2022-12-13 14:10:49,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 43 events. 14/43 cut-off events. For 64/80 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 2 based on Foata normal form. 12/53 useless extension candidates. Maximal degree in co-relation 149. Up to 21 conditions per place. [2022-12-13 14:10:49,543 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 15 selfloop transitions, 10 changer transitions 0/28 dead transitions. [2022-12-13 14:10:49,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 186 flow [2022-12-13 14:10:49,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:10:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:10:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2022-12-13 14:10:49,545 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5582278481012658 [2022-12-13 14:10:49,545 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2022-12-13 14:10:49,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2022-12-13 14:10:49,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:49,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2022-12-13 14:10:49,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,548 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 120 flow. Second operand 5 states and 441 transitions. [2022-12-13 14:10:49,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 186 flow [2022-12-13 14:10:49,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 153 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-12-13 14:10:49,549 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 118 flow [2022-12-13 14:10:49,549 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2022-12-13 14:10:49,550 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-13 14:10:49,550 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 118 flow [2022-12-13 14:10:49,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,550 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:10:49,550 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 14:10:49,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:10:49,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 14:10:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:10:49,551 INFO L85 PathProgramCache]: Analyzing trace with hash 47574624, now seen corresponding path program 1 times [2022-12-13 14:10:49,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:10:49,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109462230] [2022-12-13 14:10:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:10:49,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:10:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:10:49,624 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 14:10:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:10:49,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109462230] [2022-12-13 14:10:49,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109462230] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:10:49,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:10:49,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:10:49,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043646684] [2022-12-13 14:10:49,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:10:49,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:10:49,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:10:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:10:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:10:49,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 158 [2022-12-13 14:10:49,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:10:49,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 158 [2022-12-13 14:10:49,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:10:49,673 INFO L130 PetriNetUnfolder]: 18/52 cut-off events. [2022-12-13 14:10:49,673 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2022-12-13 14:10:49,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 52 events. 18/52 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 3 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 173. Up to 27 conditions per place. [2022-12-13 14:10:49,673 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2022-12-13 14:10:49,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 204 flow [2022-12-13 14:10:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:10:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:10:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2022-12-13 14:10:49,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5240506329113924 [2022-12-13 14:10:49,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2022-12-13 14:10:49,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2022-12-13 14:10:49,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:10:49,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2022-12-13 14:10:49,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,680 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,680 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 118 flow. Second operand 5 states and 414 transitions. [2022-12-13 14:10:49,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 204 flow [2022-12-13 14:10:49,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 172 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 14:10:49,682 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2022-12-13 14:10:49,682 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2022-12-13 14:10:49,683 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2022-12-13 14:10:49,683 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2022-12-13 14:10:49,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:10:49,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 14:10:49,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 14:10:49,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 14:10:49,685 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 14:10:49,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:10:49,686 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:10:49,688 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:10:49,688 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:10:49,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:10:49 BasicIcfg [2022-12-13 14:10:49,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:10:49,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:10:49,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:10:49,691 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:10:49,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:10:46" (3/4) ... [2022-12-13 14:10:49,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:10:49,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 14:10:49,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 14:10:49,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 14:10:49,700 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 14:10:49,700 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 14:10:49,701 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 14:10:49,701 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 14:10:49,722 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:10:49,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:10:49,722 INFO L158 Benchmark]: Toolchain (without parser) took 4208.28ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 81.6MB in the beginning and 40.3MB in the end (delta: 41.4MB). Peak memory consumption was 79.5MB. Max. memory is 16.1GB. [2022-12-13 14:10:49,723 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 93.1MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:10:49,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.99ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 58.5MB in the end (delta: 23.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 14:10:49,723 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.38ms. Allocated memory is still 117.4MB. Free memory was 58.5MB in the beginning and 56.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:10:49,723 INFO L158 Benchmark]: Boogie Preprocessor took 16.35ms. Allocated memory is still 117.4MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:10:49,724 INFO L158 Benchmark]: RCFGBuilder took 319.73ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 54.8MB in the beginning and 119.5MB in the end (delta: -64.8MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2022-12-13 14:10:49,724 INFO L158 Benchmark]: TraceAbstraction took 3504.64ms. Allocated memory is still 153.1MB. Free memory was 118.7MB in the beginning and 42.4MB in the end (delta: 76.3MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. [2022-12-13 14:10:49,724 INFO L158 Benchmark]: Witness Printer took 31.22ms. Allocated memory is still 153.1MB. Free memory was 42.4MB in the beginning and 40.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:10:49,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 117.4MB. Free memory was 93.3MB in the beginning and 93.1MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.99ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 58.5MB in the end (delta: 23.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.38ms. Allocated memory is still 117.4MB. Free memory was 58.5MB in the beginning and 56.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.35ms. Allocated memory is still 117.4MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.73ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 54.8MB in the beginning and 119.5MB in the end (delta: -64.8MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3504.64ms. Allocated memory is still 153.1MB. Free memory was 118.7MB in the beginning and 42.4MB in the end (delta: 76.3MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. * Witness Printer took 31.22ms. Allocated memory is still 153.1MB. Free memory was 42.4MB in the beginning and 40.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 85 PlacesBefore, 27 PlacesAfterwards, 76 TransitionsBefore, 18 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 65 TotalNumberOfCompositions, 2275 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1358, independent: 1262, independent conditional: 0, independent unconditional: 1262, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 614, independent: 586, independent conditional: 0, independent unconditional: 586, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1358, independent: 676, independent conditional: 0, independent unconditional: 676, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 614, unknown conditional: 0, unknown unconditional: 614] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 4 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: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 218 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 172 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 44 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 363 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 44 mSolverCounterUnsat, 18 mSDtfsCounter, 363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=7, InterpolantAutomatonStates: 36, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 14:10:49,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb517852-e40c-499d-a376-bb7262d55305/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 Result: TRUE