./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/dekker.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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/dekker.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/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 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f --- 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 15:13:17,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:13:17,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:13:17,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:13:17,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:13:17,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:13:17,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:13:17,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:13:17,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:13:17,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:13:17,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:13:17,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:13:17,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:13:17,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:13:17,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:13:17,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:13:17,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:13:17,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:13:17,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:13:17,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:13:17,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:13:17,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:13:17,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:13:17,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:13:17,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:13:17,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:13:17,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:13:17,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:13:17,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:13:17,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:13:17,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:13:17,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:13:17,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:13:17,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:13:17,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:13:17,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:13:17,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:13:17,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:13:17,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:13:17,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:13:17,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:13:17,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:13:17,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:13:17,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:13:17,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:13:17,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:13:17,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:13:17,213 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:13:17,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:13:17,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:13:17,214 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:13:17,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:13:17,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:13:17,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:13:17,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:13:17,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:13:17,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:13:17,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:13:17,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:13:17,215 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:13:17,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:13:17,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:13:17,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:13:17,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:13:17,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:13:17,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:13:17,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:13:17,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:13:17,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:13:17,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:13:17,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:13:17,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:13:17,218 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:13:17,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:13:17,218 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:13:17,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:13:17,219 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:13:17,219 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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6ef65da122b5f043dc58aac5c98a5417eca7613b00ec724ef2626b8a50d79f [2022-12-13 15:13:17,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:13:17,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:13:17,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:13:17,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:13:17,426 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:13:17,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/dekker.i [2022-12-13 15:13:20,053 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:13:20,212 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:13:20,212 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/sv-benchmarks/c/pthread-atomic/dekker.i [2022-12-13 15:13:20,220 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/data/1ec21ec23/62818868a35f4c7f86b25952dfc4ab23/FLAG891884bc5 [2022-12-13 15:13:20,233 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/data/1ec21ec23/62818868a35f4c7f86b25952dfc4ab23 [2022-12-13 15:13:20,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:13:20,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:13:20,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:13:20,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:13:20,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:13:20,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@339f3bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20, skipping insertion in model container [2022-12-13 15:13:20,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:13:20,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:13:20,385 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:13:20,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,467 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,468 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,470 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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2022-12-13 15:13:20,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,479 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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2022-12-13 15:13:20,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:13:20,491 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:13:20,502 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 15:13:20,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,517 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,518 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,519 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,520 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,521 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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/sv-benchmarks/c/pthread-atomic/dekker.i[31403,31416] [2022-12-13 15:13:20,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,526 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_b7cbf472-9c64-4b58-ac08-6cb4df85d599/sv-benchmarks/c/pthread-atomic/dekker.i[32483,32496] [2022-12-13 15:13:20,526 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:13:20,527 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:13:20,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:13:20,551 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:13:20,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20 WrapperNode [2022-12-13 15:13:20,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:13:20,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:13:20,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:13:20,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:13:20,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,580 INFO L138 Inliner]: procedures = 172, calls = 60, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2022-12-13 15:13:20,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:13:20,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:13:20,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:13:20,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:13:20,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,597 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:13:20,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:13:20,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:13:20,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:13:20,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (1/1) ... [2022-12-13 15:13:20,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:13:20,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:13:20,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:13:20,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:13:20,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 15:13:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 15:13:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:13:20,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:13:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:13:20,653 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 15:13:20,746 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:13:20,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:13:20,889 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:13:20,896 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:13:20,897 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 15:13:20,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:13:20 BoogieIcfgContainer [2022-12-13 15:13:20,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:13:20,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:13:20,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:13:20,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:13:20,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:13:20" (1/3) ... [2022-12-13 15:13:20,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364e16c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:13:20, skipping insertion in model container [2022-12-13 15:13:20,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:13:20" (2/3) ... [2022-12-13 15:13:20,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364e16c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:13:20, skipping insertion in model container [2022-12-13 15:13:20,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:13:20" (3/3) ... [2022-12-13 15:13:20,905 INFO L112 eAbstractionObserver]: Analyzing ICFG dekker.i [2022-12-13 15:13:20,912 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:13:20,920 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:13:20,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:13:20,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:13:20,980 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:13:21,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 106 transitions, 228 flow [2022-12-13 15:13:21,055 INFO L130 PetriNetUnfolder]: 13/104 cut-off events. [2022-12-13 15:13:21,055 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:13:21,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 13/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 147 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-13 15:13:21,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 106 transitions, 228 flow [2022-12-13 15:13:21,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 94 transitions, 197 flow [2022-12-13 15:13:21,066 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:13:21,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 94 transitions, 197 flow [2022-12-13 15:13:21,076 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 94 transitions, 197 flow [2022-12-13 15:13:21,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 94 transitions, 197 flow [2022-12-13 15:13:21,094 INFO L130 PetriNetUnfolder]: 13/94 cut-off events. [2022-12-13 15:13:21,094 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:13:21,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 94 events. 13/94 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-13 15:13:21,096 INFO L119 LiptonReduction]: Number of co-enabled transitions 2132 [2022-12-13 15:13:22,641 INFO L134 LiptonReduction]: Checked pairs total: 5724 [2022-12-13 15:13:22,641 INFO L136 LiptonReduction]: Total number of compositions: 72 [2022-12-13 15:13:22,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:13:22,656 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;@c949516, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:13:22,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 15:13:22,659 INFO L130 PetriNetUnfolder]: 1/12 cut-off events. [2022-12-13 15:13:22,659 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:13:22,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:13:22,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:13:22,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 15:13:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:13:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash -322872975, now seen corresponding path program 1 times [2022-12-13 15:13:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:13:22,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929673920] [2022-12-13 15:13:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:13:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:22,821 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 15:13:22,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:13:22,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929673920] [2022-12-13 15:13:22,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929673920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:13:22,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:13:22,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:13:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745998797] [2022-12-13 15:13:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:13:22,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:13:22,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:13:22,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:13:22,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:13:22,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-12-13 15:13:22,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:22,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:13:22,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-12-13 15:13:22,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:13:23,008 INFO L130 PetriNetUnfolder]: 466/805 cut-off events. [2022-12-13 15:13:23,009 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 15:13:23,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 805 events. 466/805 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3855 event pairs, 172 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 1400. Up to 453 conditions per place. [2022-12-13 15:13:23,016 INFO L137 encePairwiseOnDemand]: 173/178 looper letters, 37 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2022-12-13 15:13:23,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 49 transitions, 192 flow [2022-12-13 15:13:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:13:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:13:23,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2022-12-13 15:13:23,030 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5861423220973783 [2022-12-13 15:13:23,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2022-12-13 15:13:23,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2022-12-13 15:13:23,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:13:23,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2022-12-13 15:13:23,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,045 INFO L175 Difference]: Start difference. First operand has 36 places, 35 transitions, 79 flow. Second operand 3 states and 313 transitions. [2022-12-13 15:13:23,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 49 transitions, 192 flow [2022-12-13 15:13:23,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 185 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:13:23,050 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 94 flow [2022-12-13 15:13:23,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2022-12-13 15:13:23,055 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-12-13 15:13:23,056 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 94 flow [2022-12-13 15:13:23,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:13:23,056 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:13:23,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:13:23,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 15:13:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:13:23,057 INFO L85 PathProgramCache]: Analyzing trace with hash 410754768, now seen corresponding path program 1 times [2022-12-13 15:13:23,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:13:23,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447796467] [2022-12-13 15:13:23,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:23,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:13:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:23,131 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 15:13:23,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:13:23,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447796467] [2022-12-13 15:13:23,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447796467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:13:23,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:13:23,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:13:23,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671599655] [2022-12-13 15:13:23,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:13:23,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:13:23,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:13:23,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:13:23,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:13:23,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 178 [2022-12-13 15:13:23,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 94 flow. Second operand has 3 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 15:13:23,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:13:23,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 178 [2022-12-13 15:13:23,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:13:23,242 INFO L130 PetriNetUnfolder]: 419/732 cut-off events. [2022-12-13 15:13:23,242 INFO L131 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2022-12-13 15:13:23,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 732 events. 419/732 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3434 event pairs, 174 based on Foata normal form. 30/662 useless extension candidates. Maximal degree in co-relation 879. Up to 450 conditions per place. [2022-12-13 15:13:23,247 INFO L137 encePairwiseOnDemand]: 174/178 looper letters, 33 selfloop transitions, 2 changer transitions 4/47 dead transitions. [2022-12-13 15:13:23,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 195 flow [2022-12-13 15:13:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:13:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:13:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2022-12-13 15:13:23,250 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5823970037453183 [2022-12-13 15:13:23,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2022-12-13 15:13:23,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2022-12-13 15:13:23,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:13:23,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2022-12-13 15:13:23,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,253 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 94 flow. Second operand 3 states and 311 transitions. [2022-12-13 15:13:23,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 195 flow [2022-12-13 15:13:23,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:13:23,256 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 98 flow [2022-12-13 15:13:23,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2022-12-13 15:13:23,257 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2022-12-13 15:13:23,257 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 98 flow [2022-12-13 15:13:23,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 15:13:23,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:13:23,258 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:13:23,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:13:23,258 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 15:13:23,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:13:23,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1369343643, now seen corresponding path program 1 times [2022-12-13 15:13:23,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:13:23,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633017273] [2022-12-13 15:13:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:23,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:13:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:23,342 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 15:13:23,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:13:23,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633017273] [2022-12-13 15:13:23,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633017273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:13:23,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:13:23,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:13:23,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110638444] [2022-12-13 15:13:23,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:13:23,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:13:23,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:13:23,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:13:23,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:13:23,353 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2022-12-13 15:13:23,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 98 flow. Second operand has 4 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 15:13:23,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:13:23,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2022-12-13 15:13:23,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:13:23,507 INFO L130 PetriNetUnfolder]: 621/1026 cut-off events. [2022-12-13 15:13:23,508 INFO L131 PetriNetUnfolder]: For 252/252 co-relation queries the response was YES. [2022-12-13 15:13:23,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1026 events. 621/1026 cut-off events. For 252/252 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4827 event pairs, 125 based on Foata normal form. 18/863 useless extension candidates. Maximal degree in co-relation 1584. Up to 354 conditions per place. [2022-12-13 15:13:23,512 INFO L137 encePairwiseOnDemand]: 170/178 looper letters, 51 selfloop transitions, 11 changer transitions 7/75 dead transitions. [2022-12-13 15:13:23,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 75 transitions, 330 flow [2022-12-13 15:13:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:13:23,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:13:23,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 505 transitions. [2022-12-13 15:13:23,514 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5674157303370787 [2022-12-13 15:13:23,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 505 transitions. [2022-12-13 15:13:23,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 505 transitions. [2022-12-13 15:13:23,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:13:23,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 505 transitions. [2022-12-13 15:13:23,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,520 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,520 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 98 flow. Second operand 5 states and 505 transitions. [2022-12-13 15:13:23,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 75 transitions, 330 flow [2022-12-13 15:13:23,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 75 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:13:23,522 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 162 flow [2022-12-13 15:13:23,523 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2022-12-13 15:13:23,523 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-12-13 15:13:23,523 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 162 flow [2022-12-13 15:13:23,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 15:13:23,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:13:23,524 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:13:23,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:13:23,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-12-13 15:13:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:13:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash 406158699, now seen corresponding path program 2 times [2022-12-13 15:13:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:13:23,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764844232] [2022-12-13 15:13:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:13:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:13:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:13:23,586 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 15:13:23,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:13:23,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764844232] [2022-12-13 15:13:23,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764844232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:13:23,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:13:23,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:13:23,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252836020] [2022-12-13 15:13:23,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:13:23,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:13:23,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:13:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:13:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:13:23,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 178 [2022-12-13 15:13:23,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 162 flow. Second operand has 4 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 15:13:23,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:13:23,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 178 [2022-12-13 15:13:23,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:13:23,755 INFO L130 PetriNetUnfolder]: 763/1218 cut-off events. [2022-12-13 15:13:23,756 INFO L131 PetriNetUnfolder]: For 768/772 co-relation queries the response was YES. [2022-12-13 15:13:23,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2976 conditions, 1218 events. 763/1218 cut-off events. For 768/772 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5556 event pairs, 125 based on Foata normal form. 28/1152 useless extension candidates. Maximal degree in co-relation 2056. Up to 346 conditions per place. [2022-12-13 15:13:23,758 INFO L137 encePairwiseOnDemand]: 170/178 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2022-12-13 15:13:23,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 85 transitions, 468 flow [2022-12-13 15:13:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:13:23,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:13:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2022-12-13 15:13:23,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5617977528089888 [2022-12-13 15:13:23,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2022-12-13 15:13:23,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2022-12-13 15:13:23,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:13:23,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2022-12-13 15:13:23,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,762 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:13:23,762 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 162 flow. Second operand 5 states and 500 transitions. [2022-12-13 15:13:23,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 85 transitions, 468 flow [2022-12-13 15:13:23,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 460 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 15:13:23,773 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2022-12-13 15:13:23,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2022-12-13 15:13:23,773 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2022-12-13 15:13:23,773 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2022-12-13 15:13:23,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 15:13:23,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-12-13 15:13:23,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-12-13 15:13:23,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-12-13 15:13:23,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-12-13 15:13:23,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-12-13 15:13:23,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-12-13 15:13:23,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:13:23,777 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-12-13 15:13:23,780 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:13:23,781 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:13:23,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:13:23 BasicIcfg [2022-12-13 15:13:23,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:13:23,784 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:13:23,784 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:13:23,784 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:13:23,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:13:20" (3/4) ... [2022-12-13 15:13:23,786 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:13:23,790 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-12-13 15:13:23,790 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-12-13 15:13:23,793 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-12-13 15:13:23,793 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 15:13:23,793 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 15:13:23,793 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 15:13:23,814 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:13:23,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:13:23,814 INFO L158 Benchmark]: Toolchain (without parser) took 3577.78ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 100.1MB in the beginning and 123.2MB in the end (delta: -23.1MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-12-13 15:13:23,814 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory was 79.4MB in the beginning and 79.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:13:23,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.88ms. Allocated memory is still 136.3MB. Free memory was 100.1MB in the beginning and 74.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 15:13:23,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.62ms. Allocated memory is still 136.3MB. Free memory was 74.9MB in the beginning and 73.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:13:23,815 INFO L158 Benchmark]: Boogie Preprocessor took 19.08ms. Allocated memory is still 136.3MB. Free memory was 73.4MB in the beginning and 71.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:13:23,815 INFO L158 Benchmark]: RCFGBuilder took 298.15ms. Allocated memory is still 136.3MB. Free memory was 71.7MB in the beginning and 57.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 15:13:23,816 INFO L158 Benchmark]: TraceAbstraction took 2882.86ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 57.0MB in the beginning and 125.3MB in the end (delta: -68.3MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2022-12-13 15:13:23,816 INFO L158 Benchmark]: Witness Printer took 30.18ms. Allocated memory is still 163.6MB. Free memory was 125.3MB in the beginning and 123.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:13:23,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 136.3MB. Free memory was 79.4MB in the beginning and 79.3MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.88ms. Allocated memory is still 136.3MB. Free memory was 100.1MB in the beginning and 74.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.62ms. Allocated memory is still 136.3MB. Free memory was 74.9MB in the beginning and 73.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.08ms. Allocated memory is still 136.3MB. Free memory was 73.4MB in the beginning and 71.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 298.15ms. Allocated memory is still 136.3MB. Free memory was 71.7MB in the beginning and 57.6MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2882.86ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 57.0MB in the beginning and 125.3MB in the end (delta: -68.3MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Witness Printer took 30.18ms. Allocated memory is still 163.6MB. Free memory was 125.3MB in the beginning and 123.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 88 PlacesBefore, 36 PlacesAfterwards, 94 TransitionsBefore, 35 TransitionsAfterwards, 2132 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 10 ConcurrentYvCompositions, 7 ChoiceCompositions, 72 TotalNumberOfCompositions, 5724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3133, independent: 2900, independent conditional: 0, independent unconditional: 2900, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1080, independent: 1045, independent conditional: 0, independent unconditional: 1045, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3133, independent: 1855, independent conditional: 0, independent unconditional: 1855, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 1080, unknown conditional: 0, unknown unconditional: 1080] , Statistics on independence cache: Total cache size (in pairs): 194, Positive cache size: 172, Positive conditional cache size: 0, Positive unconditional cache size: 172, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 780]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 739]: 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 5 procedures, 138 locations, 6 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 125 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 395 IncrementalHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 12 mSDtfsCounter, 395 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 15:13:23,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7cbf472-9c64-4b58-ac08-6cb4df85d599/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