./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix053.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/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_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix053.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/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_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/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 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 --- 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 14:21:02,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:21:02,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:21:02,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:21:02,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:21:02,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:21:02,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:21:02,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:21:02,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:21:02,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:21:02,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:21:02,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:21:02,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:21:02,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:21:02,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:21:02,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:21:02,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:21:02,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:21:02,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:21:02,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:21:02,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:21:02,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:21:02,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:21:02,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:21:02,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:21:02,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:21:02,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:21:02,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:21:02,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:21:02,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:21:02,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:21:02,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:21:02,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:21:02,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:21:02,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:21:02,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:21:02,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:21:02,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:21:02,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:21:02,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:21:02,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:21:02,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:21:02,215 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:21:02,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:21:02,216 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:21:02,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:21:02,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:21:02,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:21:02,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:21:02,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:21:02,217 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:21:02,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:21:02,218 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:21:02,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:21:02,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:21:02,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:21:02,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:21:02,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:21:02,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:21:02,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:21:02,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:21:02,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:21:02,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:21:02,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:21:02,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:21:02,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:21:02,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:21:02,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:21:02,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:21:02,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:21:02,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:21:02,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:21:02,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:21:02,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:21:02,221 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:21:02,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:21:02,222 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:21:02,222 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_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 998817f829569afa1d1e3eda89c2594d280c8ae81957c207a6b68804966cf3a6 [2022-12-13 14:21:02,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:21:02,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:21:02,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:21:02,414 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:21:02,415 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:21:02,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix053.opt.i [2022-12-13 14:21:04,968 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:21:05,170 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:21:05,171 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/sv-benchmarks/c/pthread-wmm/mix053.opt.i [2022-12-13 14:21:05,179 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/data/0284e48c4/8d071ed6731b4824ad5862f95916a3a9/FLAG84d495829 [2022-12-13 14:21:05,189 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/data/0284e48c4/8d071ed6731b4824ad5862f95916a3a9 [2022-12-13 14:21:05,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:21:05,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:21:05,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:21:05,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:21:05,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:21:05,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f8db89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05, skipping insertion in model container [2022-12-13 14:21:05,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:21:05,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:21:05,340 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_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/sv-benchmarks/c/pthread-wmm/mix053.opt.i[944,957] [2022-12-13 14:21:05,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,445 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,447 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,465 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,466 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,470 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:21:05,493 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:21:05,504 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_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/sv-benchmarks/c/pthread-wmm/mix053.opt.i[944,957] [2022-12-13 14:21:05,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,521 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,522 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,523 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,524 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,525 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,529 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,530 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,531 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,532 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,533 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,534 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,536 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,537 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,538 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:21:05,539 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:21:05,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:21:05,558 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:21:05,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05 WrapperNode [2022-12-13 14:21:05,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:21:05,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:21:05,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:21:05,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:21:05,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,601 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2022-12-13 14:21:05,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:21:05,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:21:05,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:21:05,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:21:05,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:21:05,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:21:05,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:21:05,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:21:05,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (1/1) ... [2022-12-13 14:21:05,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:21:05,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:21:05,662 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:21:05,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:21:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 14:21:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 14:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 14:21:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 14:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 14:21:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 14:21:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 14:21:05,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 14:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:21:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:21:05,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:21:05,700 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 14:21:05,806 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:21:05,808 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:21:06,042 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:21:06,148 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:21:06,148 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:21:06,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:21:06 BoogieIcfgContainer [2022-12-13 14:21:06,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:21:06,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:21:06,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:21:06,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:21:06,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:21:05" (1/3) ... [2022-12-13 14:21:06,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c7316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:21:06, skipping insertion in model container [2022-12-13 14:21:06,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:21:05" (2/3) ... [2022-12-13 14:21:06,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c7316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:21:06, skipping insertion in model container [2022-12-13 14:21:06,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:21:06" (3/3) ... [2022-12-13 14:21:06,159 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2022-12-13 14:21:06,167 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:21:06,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:21:06,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 14:21:06,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:21:06,223 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 14:21:06,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 284 flow [2022-12-13 14:21:06,308 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-13 14:21:06,309 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:21:06,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 14:21:06,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 284 flow [2022-12-13 14:21:06,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 268 flow [2022-12-13 14:21:06,322 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:21:06,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-13 14:21:06,335 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-13 14:21:06,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 268 flow [2022-12-13 14:21:06,365 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-13 14:21:06,366 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:21:06,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 14:21:06,368 INFO L119 LiptonReduction]: Number of co-enabled transitions 2828 [2022-12-13 14:21:09,028 INFO L134 LiptonReduction]: Checked pairs total: 6627 [2022-12-13 14:21:09,028 INFO L136 LiptonReduction]: Total number of compositions: 114 [2022-12-13 14:21:09,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:21:09,043 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@502536e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:21:09,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 14:21:09,047 INFO L130 PetriNetUnfolder]: 0/17 cut-off events. [2022-12-13 14:21:09,047 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:21:09,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:09,047 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:09,048 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:09,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:09,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1594630924, now seen corresponding path program 1 times [2022-12-13 14:21:09,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:09,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430939146] [2022-12-13 14:21:09,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:09,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:09,366 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 14:21:09,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:09,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430939146] [2022-12-13 14:21:09,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430939146] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:09,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:09,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:21:09,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550614816] [2022-12-13 14:21:09,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:09,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:21:09,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:09,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:21:09,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:21:09,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 246 [2022-12-13 14:21:09,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 14:21:09,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:09,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 246 [2022-12-13 14:21:09,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:09,721 INFO L130 PetriNetUnfolder]: 2075/3080 cut-off events. [2022-12-13 14:21:09,721 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-12-13 14:21:09,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6076 conditions, 3080 events. 2075/3080 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15862 event pairs, 518 based on Foata normal form. 0/2932 useless extension candidates. Maximal degree in co-relation 6064. Up to 2098 conditions per place. [2022-12-13 14:21:09,735 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 29 selfloop transitions, 2 changer transitions 2/36 dead transitions. [2022-12-13 14:21:09,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 150 flow [2022-12-13 14:21:09,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:21:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:21:09,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2022-12-13 14:21:09,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.532520325203252 [2022-12-13 14:21:09,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2022-12-13 14:21:09,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2022-12-13 14:21:09,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:09,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2022-12-13 14:21:09,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 14:21:09,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:09,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:09,763 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 66 flow. Second operand 3 states and 393 transitions. [2022-12-13 14:21:09,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 150 flow [2022-12-13 14:21:09,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 146 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 14:21:09,767 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 60 flow [2022-12-13 14:21:09,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2022-12-13 14:21:09,771 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2022-12-13 14:21:09,771 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 60 flow [2022-12-13 14:21:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 14:21:09,772 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:09,772 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:09,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:21:09,772 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:09,773 INFO L85 PathProgramCache]: Analyzing trace with hash -862919943, now seen corresponding path program 1 times [2022-12-13 14:21:09,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:09,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502668483] [2022-12-13 14:21:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:09,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:09,909 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 14:21:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:09,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502668483] [2022-12-13 14:21:09,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502668483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:09,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:09,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:21:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997029446] [2022-12-13 14:21:09,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:09,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:21:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:21:09,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:21:09,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 14:21:09,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 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 14:21:09,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:09,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 14:21:09,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:10,656 INFO L130 PetriNetUnfolder]: 6105/8506 cut-off events. [2022-12-13 14:21:10,656 INFO L131 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2022-12-13 14:21:10,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17670 conditions, 8506 events. 6105/8506 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 42358 event pairs, 2153 based on Foata normal form. 244/8750 useless extension candidates. Maximal degree in co-relation 17660. Up to 5069 conditions per place. [2022-12-13 14:21:10,692 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 36 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2022-12-13 14:21:10,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 43 transitions, 190 flow [2022-12-13 14:21:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:21:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:21:10,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 377 transitions. [2022-12-13 14:21:10,694 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.510840108401084 [2022-12-13 14:21:10,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 377 transitions. [2022-12-13 14:21:10,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 377 transitions. [2022-12-13 14:21:10,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:10,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 377 transitions. [2022-12-13 14:21:10,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:21:10,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:10,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:10,697 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 60 flow. Second operand 3 states and 377 transitions. [2022-12-13 14:21:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 43 transitions, 190 flow [2022-12-13 14:21:10,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:21:10,704 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 110 flow [2022-12-13 14:21:10,704 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2022-12-13 14:21:10,705 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2022-12-13 14:21:10,705 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 110 flow [2022-12-13 14:21:10,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 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 14:21:10,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:10,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:21:10,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:10,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash -980716662, now seen corresponding path program 1 times [2022-12-13 14:21:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:10,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317574468] [2022-12-13 14:21:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:10,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:10,815 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 14:21:10,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:10,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317574468] [2022-12-13 14:21:10,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317574468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:10,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:10,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:21:10,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075830447] [2022-12-13 14:21:10,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:10,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:21:10,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:10,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:21:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:21:10,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 14:21:10,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 14:21:10,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:10,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 14:21:10,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:11,607 INFO L130 PetriNetUnfolder]: 5895/8220 cut-off events. [2022-12-13 14:21:11,607 INFO L131 PetriNetUnfolder]: For 3260/3260 co-relation queries the response was YES. [2022-12-13 14:21:11,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21424 conditions, 8220 events. 5895/8220 cut-off events. For 3260/3260 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 41693 event pairs, 549 based on Foata normal form. 32/8252 useless extension candidates. Maximal degree in co-relation 21412. Up to 4573 conditions per place. [2022-12-13 14:21:11,648 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 51 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2022-12-13 14:21:11,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 62 transitions, 334 flow [2022-12-13 14:21:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:21:11,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:21:11,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2022-12-13 14:21:11,650 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5101626016260162 [2022-12-13 14:21:11,650 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2022-12-13 14:21:11,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2022-12-13 14:21:11,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:11,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2022-12-13 14:21:11,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 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 14:21:11,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 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 14:21:11,653 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 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 14:21:11,653 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 110 flow. Second operand 4 states and 502 transitions. [2022-12-13 14:21:11,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 62 transitions, 334 flow [2022-12-13 14:21:11,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 62 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:21:11,664 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 180 flow [2022-12-13 14:21:11,664 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-12-13 14:21:11,664 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-12-13 14:21:11,664 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 180 flow [2022-12-13 14:21:11,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 14:21:11,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:11,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:11,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:21:11,665 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:11,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash -980715856, now seen corresponding path program 1 times [2022-12-13 14:21:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:11,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971065540] [2022-12-13 14:21:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:11,780 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 14:21:11,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971065540] [2022-12-13 14:21:11,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971065540] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:11,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:11,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:21:11,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207152287] [2022-12-13 14:21:11,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:11,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:21:11,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:21:11,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:21:11,796 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 14:21:11,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 14:21:11,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:11,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 14:21:11,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:12,477 INFO L130 PetriNetUnfolder]: 5732/7997 cut-off events. [2022-12-13 14:21:12,477 INFO L131 PetriNetUnfolder]: For 7091/7091 co-relation queries the response was YES. [2022-12-13 14:21:12,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22892 conditions, 7997 events. 5732/7997 cut-off events. For 7091/7091 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 39658 event pairs, 1025 based on Foata normal form. 30/8027 useless extension candidates. Maximal degree in co-relation 22877. Up to 4392 conditions per place. [2022-12-13 14:21:12,516 INFO L137 encePairwiseOnDemand]: 238/246 looper letters, 56 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2022-12-13 14:21:12,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 446 flow [2022-12-13 14:21:12,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:21:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:21:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2022-12-13 14:21:12,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5142276422764228 [2022-12-13 14:21:12,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2022-12-13 14:21:12,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2022-12-13 14:21:12,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:12,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2022-12-13 14:21:12,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 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 14:21:12,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 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 14:21:12,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 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 14:21:12,521 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 180 flow. Second operand 4 states and 506 transitions. [2022-12-13 14:21:12,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 446 flow [2022-12-13 14:21:12,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 73 transitions, 446 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:21:12,532 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 286 flow [2022-12-13 14:21:12,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2022-12-13 14:21:12,533 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2022-12-13 14:21:12,533 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 286 flow [2022-12-13 14:21:12,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 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 14:21:12,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:12,533 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:12,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:21:12,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:12,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:12,534 INFO L85 PathProgramCache]: Analyzing trace with hash -337446849, now seen corresponding path program 1 times [2022-12-13 14:21:12,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:12,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176050400] [2022-12-13 14:21:12,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:12,632 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 14:21:12,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:12,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176050400] [2022-12-13 14:21:12,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176050400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:12,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:12,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:21:12,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056810367] [2022-12-13 14:21:12,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:12,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:21:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:12,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:21:12,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:21:12,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 14:21:12,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 14:21:12,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:12,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 14:21:12,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:13,272 INFO L130 PetriNetUnfolder]: 3941/5900 cut-off events. [2022-12-13 14:21:13,272 INFO L131 PetriNetUnfolder]: For 10153/10768 co-relation queries the response was YES. [2022-12-13 14:21:13,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17992 conditions, 5900 events. 3941/5900 cut-off events. For 10153/10768 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 34091 event pairs, 676 based on Foata normal form. 724/6504 useless extension candidates. Maximal degree in co-relation 17973. Up to 3992 conditions per place. [2022-12-13 14:21:13,302 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 80 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2022-12-13 14:21:13,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 104 transitions, 799 flow [2022-12-13 14:21:13,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:21:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 14:21:13,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 615 transitions. [2022-12-13 14:21:13,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 14:21:13,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 615 transitions. [2022-12-13 14:21:13,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 615 transitions. [2022-12-13 14:21:13,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:13,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 615 transitions. [2022-12-13 14:21:13,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 14:21:13,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 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 14:21:13,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 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 14:21:13,309 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 286 flow. Second operand 5 states and 615 transitions. [2022-12-13 14:21:13,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 104 transitions, 799 flow [2022-12-13 14:21:13,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 104 transitions, 799 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:21:13,316 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 361 flow [2022-12-13 14:21:13,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2022-12-13 14:21:13,317 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2022-12-13 14:21:13,317 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 361 flow [2022-12-13 14:21:13,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 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 14:21:13,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:13,318 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:13,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:21:13,318 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:13,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:13,318 INFO L85 PathProgramCache]: Analyzing trace with hash 108791642, now seen corresponding path program 1 times [2022-12-13 14:21:13,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:13,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432994070] [2022-12-13 14:21:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:13,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:13,420 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 14:21:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:13,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432994070] [2022-12-13 14:21:13,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432994070] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:13,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:13,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:21:13,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718572194] [2022-12-13 14:21:13,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:21:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:21:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:21:13,425 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 246 [2022-12-13 14:21:13,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 14:21:13,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:13,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 246 [2022-12-13 14:21:13,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:14,285 INFO L130 PetriNetUnfolder]: 5737/8655 cut-off events. [2022-12-13 14:21:14,285 INFO L131 PetriNetUnfolder]: For 21033/21391 co-relation queries the response was YES. [2022-12-13 14:21:14,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34194 conditions, 8655 events. 5737/8655 cut-off events. For 21033/21391 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 52527 event pairs, 2406 based on Foata normal form. 418/8959 useless extension candidates. Maximal degree in co-relation 34170. Up to 4587 conditions per place. [2022-12-13 14:21:14,309 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 54 selfloop transitions, 8 changer transitions 12/81 dead transitions. [2022-12-13 14:21:14,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 653 flow [2022-12-13 14:21:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:21:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:21:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2022-12-13 14:21:14,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5298102981029811 [2022-12-13 14:21:14,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2022-12-13 14:21:14,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2022-12-13 14:21:14,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:14,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2022-12-13 14:21:14,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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 14:21:14,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:14,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:14,312 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 361 flow. Second operand 3 states and 391 transitions. [2022-12-13 14:21:14,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 653 flow [2022-12-13 14:21:14,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:21:14,332 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 341 flow [2022-12-13 14:21:14,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=341, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2022-12-13 14:21:14,333 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2022-12-13 14:21:14,333 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 341 flow [2022-12-13 14:21:14,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 14:21:14,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:14,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:14,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:21:14,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:14,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:14,334 INFO L85 PathProgramCache]: Analyzing trace with hash 728107122, now seen corresponding path program 1 times [2022-12-13 14:21:14,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:14,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579632215] [2022-12-13 14:21:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:14,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:14,430 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 14:21:14,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:14,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579632215] [2022-12-13 14:21:14,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579632215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:14,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:14,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:21:14,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019673978] [2022-12-13 14:21:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:14,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:21:14,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:21:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:21:14,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 14:21:14,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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 14:21:14,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:14,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 14:21:14,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:15,015 INFO L130 PetriNetUnfolder]: 3230/5125 cut-off events. [2022-12-13 14:21:15,015 INFO L131 PetriNetUnfolder]: For 11745/12291 co-relation queries the response was YES. [2022-12-13 14:21:15,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20033 conditions, 5125 events. 3230/5125 cut-off events. For 11745/12291 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 31599 event pairs, 300 based on Foata normal form. 758/5788 useless extension candidates. Maximal degree in co-relation 20008. Up to 2259 conditions per place. [2022-12-13 14:21:15,030 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 104 selfloop transitions, 15 changer transitions 6/137 dead transitions. [2022-12-13 14:21:15,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 137 transitions, 1211 flow [2022-12-13 14:21:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:21:15,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 14:21:15,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 858 transitions. [2022-12-13 14:21:15,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49825783972125437 [2022-12-13 14:21:15,032 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 858 transitions. [2022-12-13 14:21:15,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 858 transitions. [2022-12-13 14:21:15,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:15,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 858 transitions. [2022-12-13 14:21:15,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 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 14:21:15,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 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 14:21:15,036 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 states have internal predecessors, (1968), 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 14:21:15,036 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 341 flow. Second operand 7 states and 858 transitions. [2022-12-13 14:21:15,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 137 transitions, 1211 flow [2022-12-13 14:21:15,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 137 transitions, 1174 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-12-13 14:21:15,061 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 451 flow [2022-12-13 14:21:15,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=451, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2022-12-13 14:21:15,062 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2022-12-13 14:21:15,062 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 451 flow [2022-12-13 14:21:15,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 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 14:21:15,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:15,062 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 14:21:15,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:21:15,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash -327102052, now seen corresponding path program 1 times [2022-12-13 14:21:15,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:15,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918273459] [2022-12-13 14:21:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:15,182 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 14:21:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:15,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918273459] [2022-12-13 14:21:15,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918273459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:15,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:15,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:21:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555016507] [2022-12-13 14:21:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:15,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:21:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:15,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:21:15,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:21:15,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 14:21:15,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 451 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 14:21:15,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:15,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 14:21:15,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:15,862 INFO L130 PetriNetUnfolder]: 2831/4524 cut-off events. [2022-12-13 14:21:15,862 INFO L131 PetriNetUnfolder]: For 13745/14424 co-relation queries the response was YES. [2022-12-13 14:21:15,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 4524 events. 2831/4524 cut-off events. For 13745/14424 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 27803 event pairs, 172 based on Foata normal form. 614/5047 useless extension candidates. Maximal degree in co-relation 20814. Up to 2077 conditions per place. [2022-12-13 14:21:15,880 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 113 selfloop transitions, 24 changer transitions 17/166 dead transitions. [2022-12-13 14:21:15,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 166 transitions, 1524 flow [2022-12-13 14:21:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:21:15,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 14:21:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1103 transitions. [2022-12-13 14:21:15,883 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.498193315266486 [2022-12-13 14:21:15,884 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1103 transitions. [2022-12-13 14:21:15,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1103 transitions. [2022-12-13 14:21:15,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:15,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1103 transitions. [2022-12-13 14:21:15,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.55555555555556) internal successors, (1103), 9 states have internal predecessors, (1103), 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 14:21:15,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 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 14:21:15,889 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 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 14:21:15,889 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 451 flow. Second operand 9 states and 1103 transitions. [2022-12-13 14:21:15,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 166 transitions, 1524 flow [2022-12-13 14:21:16,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 166 transitions, 1479 flow, removed 17 selfloop flow, removed 2 redundant places. [2022-12-13 14:21:16,030 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 576 flow [2022-12-13 14:21:16,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=576, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2022-12-13 14:21:16,031 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2022-12-13 14:21:16,031 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 576 flow [2022-12-13 14:21:16,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 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 14:21:16,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:16,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:16,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:21:16,032 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1865571558, now seen corresponding path program 1 times [2022-12-13 14:21:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:16,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754733571] [2022-12-13 14:21:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:16,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:16,168 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 14:21:16,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:16,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754733571] [2022-12-13 14:21:16,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754733571] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:16,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:16,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:21:16,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397937302] [2022-12-13 14:21:16,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:16,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:21:16,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:21:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:21:16,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 246 [2022-12-13 14:21:16,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 576 flow. Second operand has 7 states, 7 states have (on average 113.57142857142857) internal successors, (795), 7 states have internal predecessors, (795), 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 14:21:16,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:16,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 246 [2022-12-13 14:21:16,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:16,848 INFO L130 PetriNetUnfolder]: 2757/4387 cut-off events. [2022-12-13 14:21:16,848 INFO L131 PetriNetUnfolder]: For 15806/16319 co-relation queries the response was YES. [2022-12-13 14:21:16,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20600 conditions, 4387 events. 2757/4387 cut-off events. For 15806/16319 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 26901 event pairs, 162 based on Foata normal form. 384/4680 useless extension candidates. Maximal degree in co-relation 20569. Up to 1296 conditions per place. [2022-12-13 14:21:16,860 INFO L137 encePairwiseOnDemand]: 239/246 looper letters, 92 selfloop transitions, 27 changer transitions 39/167 dead transitions. [2022-12-13 14:21:16,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 167 transitions, 1581 flow [2022-12-13 14:21:16,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:21:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 14:21:16,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1326 transitions. [2022-12-13 14:21:16,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49002217294900224 [2022-12-13 14:21:16,862 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1326 transitions. [2022-12-13 14:21:16,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1326 transitions. [2022-12-13 14:21:16,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:16,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1326 transitions. [2022-12-13 14:21:16,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 120.54545454545455) internal successors, (1326), 11 states have internal predecessors, (1326), 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 14:21:16,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 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 14:21:16,867 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 246.0) internal successors, (2952), 12 states have internal predecessors, (2952), 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 14:21:16,867 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 576 flow. Second operand 11 states and 1326 transitions. [2022-12-13 14:21:16,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 167 transitions, 1581 flow [2022-12-13 14:21:17,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 1489 flow, removed 36 selfloop flow, removed 3 redundant places. [2022-12-13 14:21:17,031 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 508 flow [2022-12-13 14:21:17,031 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=508, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2022-12-13 14:21:17,031 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 41 predicate places. [2022-12-13 14:21:17,032 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 508 flow [2022-12-13 14:21:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 113.57142857142857) internal successors, (795), 7 states have internal predecessors, (795), 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 14:21:17,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:17,032 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:21:17,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:17,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash -366224827, now seen corresponding path program 1 times [2022-12-13 14:21:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:17,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045759330] [2022-12-13 14:21:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:17,145 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 14:21:17,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:17,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045759330] [2022-12-13 14:21:17,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045759330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:17,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:17,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:21:17,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799062414] [2022-12-13 14:21:17,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:17,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:21:17,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:17,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:21:17,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:21:17,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 246 [2022-12-13 14:21:17,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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 14:21:17,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:17,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 246 [2022-12-13 14:21:17,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:17,520 INFO L130 PetriNetUnfolder]: 1752/2921 cut-off events. [2022-12-13 14:21:17,521 INFO L131 PetriNetUnfolder]: For 11843/11984 co-relation queries the response was YES. [2022-12-13 14:21:17,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14204 conditions, 2921 events. 1752/2921 cut-off events. For 11843/11984 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 17003 event pairs, 226 based on Foata normal form. 120/3038 useless extension candidates. Maximal degree in co-relation 14169. Up to 1654 conditions per place. [2022-12-13 14:21:17,528 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 43 selfloop transitions, 1 changer transitions 69/117 dead transitions. [2022-12-13 14:21:17,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 1210 flow [2022-12-13 14:21:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:21:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:21:17,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 511 transitions. [2022-12-13 14:21:17,530 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5193089430894309 [2022-12-13 14:21:17,530 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 511 transitions. [2022-12-13 14:21:17,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 511 transitions. [2022-12-13 14:21:17,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:17,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 511 transitions. [2022-12-13 14:21:17,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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 14:21:17,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 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 14:21:17,532 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 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 14:21:17,532 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 508 flow. Second operand 4 states and 511 transitions. [2022-12-13 14:21:17,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 1210 flow [2022-12-13 14:21:17,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 964 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-12-13 14:21:17,570 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 288 flow [2022-12-13 14:21:17,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2022-12-13 14:21:17,570 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 32 predicate places. [2022-12-13 14:21:17,570 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 288 flow [2022-12-13 14:21:17,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.5) internal successors, (486), 4 states have internal predecessors, (486), 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 14:21:17,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:17,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 14:21:17,571 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:17,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1205897161, now seen corresponding path program 2 times [2022-12-13 14:21:17,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:17,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052081560] [2022-12-13 14:21:17,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:17,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:18,098 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 14:21:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:18,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052081560] [2022-12-13 14:21:18,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052081560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:18,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:18,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:21:18,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771591540] [2022-12-13 14:21:18,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:21:18,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:21:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:21:18,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2022-12-13 14:21:18,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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 14:21:18,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:18,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2022-12-13 14:21:18,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:18,501 INFO L130 PetriNetUnfolder]: 711/1210 cut-off events. [2022-12-13 14:21:18,501 INFO L131 PetriNetUnfolder]: For 3184/3184 co-relation queries the response was YES. [2022-12-13 14:21:18,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4909 conditions, 1210 events. 711/1210 cut-off events. For 3184/3184 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5648 event pairs, 81 based on Foata normal form. 1/1211 useless extension candidates. Maximal degree in co-relation 4886. Up to 267 conditions per place. [2022-12-13 14:21:18,503 INFO L137 encePairwiseOnDemand]: 235/246 looper letters, 41 selfloop transitions, 16 changer transitions 111/168 dead transitions. [2022-12-13 14:21:18,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 168 transitions, 1413 flow [2022-12-13 14:21:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:21:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 14:21:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2022-12-13 14:21:18,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47199638663053295 [2022-12-13 14:21:18,506 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2022-12-13 14:21:18,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2022-12-13 14:21:18,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:18,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2022-12-13 14:21:18,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 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 14:21:18,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 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 14:21:18,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 246.0) internal successors, (2460), 10 states have internal predecessors, (2460), 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 14:21:18,512 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 288 flow. Second operand 9 states and 1045 transitions. [2022-12-13 14:21:18,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 168 transitions, 1413 flow [2022-12-13 14:21:18,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 168 transitions, 1353 flow, removed 16 selfloop flow, removed 9 redundant places. [2022-12-13 14:21:18,524 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 343 flow [2022-12-13 14:21:18,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=343, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2022-12-13 14:21:18,525 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2022-12-13 14:21:18,525 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 343 flow [2022-12-13 14:21:18,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 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 14:21:18,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:18,525 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 14:21:18,526 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1558200371, now seen corresponding path program 3 times [2022-12-13 14:21:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:18,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652999795] [2022-12-13 14:21:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:21:18,645 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 14:21:18,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:21:18,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652999795] [2022-12-13 14:21:18,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652999795] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:21:18,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:21:18,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:21:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718357239] [2022-12-13 14:21:18,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:21:18,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:21:18,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:21:18,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:21:18,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:21:18,649 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 246 [2022-12-13 14:21:18,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 14:21:18,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:21:18,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 246 [2022-12-13 14:21:18,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:21:18,730 INFO L130 PetriNetUnfolder]: 164/331 cut-off events. [2022-12-13 14:21:18,730 INFO L131 PetriNetUnfolder]: For 887/887 co-relation queries the response was YES. [2022-12-13 14:21:18,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1450 conditions, 331 events. 164/331 cut-off events. For 887/887 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1178 event pairs, 57 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1430. Up to 234 conditions per place. [2022-12-13 14:21:18,732 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 36 selfloop transitions, 2 changer transitions 27/67 dead transitions. [2022-12-13 14:21:18,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 590 flow [2022-12-13 14:21:18,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:21:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:21:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-12-13 14:21:18,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.518970189701897 [2022-12-13 14:21:18,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-12-13 14:21:18,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-12-13 14:21:18,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:21:18,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-12-13 14:21:18,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 14:21:18,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:18,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 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 14:21:18,734 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 343 flow. Second operand 3 states and 383 transitions. [2022-12-13 14:21:18,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 590 flow [2022-12-13 14:21:18,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 560 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 14:21:18,737 INFO L231 Difference]: Finished difference. Result has 60 places, 36 transitions, 220 flow [2022-12-13 14:21:18,737 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=60, PETRI_TRANSITIONS=36} [2022-12-13 14:21:18,738 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2022-12-13 14:21:18,738 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 36 transitions, 220 flow [2022-12-13 14:21:18,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 14:21:18,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:21:18,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:21:18,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 14:21:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:21:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1938962485, now seen corresponding path program 4 times [2022-12-13 14:21:18,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:21:18,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787776297] [2022-12-13 14:21:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:21:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:21:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:21:18,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:21:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:21:18,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:21:18,800 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:21:18,801 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 14:21:18,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 14:21:18,802 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 14:21:18,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 14:21:18,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 14:21:18,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-13 14:21:18,803 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 14:21:18,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 14:21:18,803 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:21:18,807 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:21:18,807 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:21:18,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:21:18 BasicIcfg [2022-12-13 14:21:18,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:21:18,855 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:21:18,855 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:21:18,855 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:21:18,856 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:21:06" (3/4) ... [2022-12-13 14:21:18,857 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 14:21:18,921 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:21:18,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:21:18,922 INFO L158 Benchmark]: Toolchain (without parser) took 13729.54ms. Allocated memory was 144.7MB in the beginning and 878.7MB in the end (delta: 734.0MB). Free memory was 107.9MB in the beginning and 409.6MB in the end (delta: -301.7MB). Peak memory consumption was 433.8MB. Max. memory is 16.1GB. [2022-12-13 14:21:18,922 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:21:18,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.75ms. Allocated memory is still 144.7MB. Free memory was 107.9MB in the beginning and 81.2MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 14:21:18,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.36ms. Allocated memory is still 144.7MB. Free memory was 81.2MB in the beginning and 78.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:21:18,923 INFO L158 Benchmark]: Boogie Preprocessor took 30.73ms. Allocated memory is still 144.7MB. Free memory was 78.5MB in the beginning and 76.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:21:18,923 INFO L158 Benchmark]: RCFGBuilder took 517.30ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 76.4MB in the beginning and 137.5MB in the end (delta: -61.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. [2022-12-13 14:21:18,923 INFO L158 Benchmark]: TraceAbstraction took 12701.00ms. Allocated memory was 174.1MB in the beginning and 878.7MB in the end (delta: 704.6MB). Free memory was 136.5MB in the beginning and 423.3MB in the end (delta: -286.8MB). Peak memory consumption was 417.8MB. Max. memory is 16.1GB. [2022-12-13 14:21:18,924 INFO L158 Benchmark]: Witness Printer took 66.31ms. Allocated memory is still 878.7MB. Free memory was 423.3MB in the beginning and 409.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 14:21:18,925 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 144.7MB. Free memory is still 118.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.75ms. Allocated memory is still 144.7MB. Free memory was 107.9MB in the beginning and 81.2MB in the end (delta: 26.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.36ms. Allocated memory is still 144.7MB. Free memory was 81.2MB in the beginning and 78.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.73ms. Allocated memory is still 144.7MB. Free memory was 78.5MB in the beginning and 76.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 517.30ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 76.4MB in the beginning and 137.5MB in the end (delta: -61.1MB). Peak memory consumption was 32.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12701.00ms. Allocated memory was 174.1MB in the beginning and 878.7MB in the end (delta: 704.6MB). Free memory was 136.5MB in the beginning and 423.3MB in the end (delta: -286.8MB). Peak memory consumption was 417.8MB. Max. memory is 16.1GB. * Witness Printer took 66.31ms. Allocated memory is still 878.7MB. Free memory was 423.3MB in the beginning and 409.6MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 139 PlacesBefore, 39 PlacesAfterwards, 128 TransitionsBefore, 27 TransitionsAfterwards, 2828 CoEnabledTransitionPairs, 7 FixpointIterations, 44 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 114 TotalNumberOfCompositions, 6627 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3786, independent: 3599, independent conditional: 0, independent unconditional: 3599, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1568, independent: 1526, independent conditional: 0, independent unconditional: 1526, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3786, independent: 2073, independent conditional: 0, independent unconditional: 2073, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 1568, unknown conditional: 0, unknown unconditional: 1568] , Statistics on independence cache: Total cache size (in pairs): 132, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p2_EAX = 0; [L714] 0 int __unbuffered_p3_EAX = 0; [L716] 0 int a = 0; [L717] 0 _Bool main$tmp_guard0; [L718] 0 _Bool main$tmp_guard1; [L720] 0 int x = 0; [L722] 0 int y = 0; [L724] 0 int z = 0; [L725] 0 _Bool z$flush_delayed; [L726] 0 int z$mem_tmp; [L727] 0 _Bool z$r_buff0_thd0; [L728] 0 _Bool z$r_buff0_thd1; [L729] 0 _Bool z$r_buff0_thd2; [L730] 0 _Bool z$r_buff0_thd3; [L731] 0 _Bool z$r_buff0_thd4; [L732] 0 _Bool z$r_buff1_thd0; [L733] 0 _Bool z$r_buff1_thd1; [L734] 0 _Bool z$r_buff1_thd2; [L735] 0 _Bool z$r_buff1_thd3; [L736] 0 _Bool z$r_buff1_thd4; [L737] 0 _Bool z$read_delayed; [L738] 0 int *z$read_delayed_var; [L739] 0 int z$w_buff0; [L740] 0 _Bool z$w_buff0_used; [L741] 0 int z$w_buff1; [L742] 0 _Bool z$w_buff1_used; [L743] 0 _Bool weak$$choice0; [L744] 0 _Bool weak$$choice2; [L844] 0 pthread_t t1413; [L845] FCALL, FORK 0 pthread_create(&t1413, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1413, ((void *)0), P0, ((void *)0))=-1, t1413={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L846] 0 pthread_t t1414; [L847] FCALL, FORK 0 pthread_create(&t1414, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1414, ((void *)0), P1, ((void *)0))=0, t1413={5:0}, t1414={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L848] 0 pthread_t t1415; [L849] FCALL, FORK 0 pthread_create(&t1415, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1415, ((void *)0), P2, ((void *)0))=1, t1413={5:0}, t1414={6:0}, t1415={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L850] 0 pthread_t t1416; [L851] FCALL, FORK 0 pthread_create(&t1416, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1416, ((void *)0), P3, ((void *)0))=2, t1413={5:0}, t1414={6:0}, t1415={7:0}, t1416={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L806] 4 z$w_buff1 = z$w_buff0 [L807] 4 z$w_buff0 = 1 [L808] 4 z$w_buff1_used = z$w_buff0_used [L809] 4 z$w_buff0_used = (_Bool)1 [L810] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L810] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L811] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L812] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L813] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L814] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L815] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L816] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L819] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L748] 1 a = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L751] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L763] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L766] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L778] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L781] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L782] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L783] 3 z$flush_delayed = weak$$choice2 [L784] 3 z$mem_tmp = z [L785] 3 z = !z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff1) [L786] 3 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : z$w_buff0)) [L787] 3 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff1 : z$w_buff1)) [L788] 3 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used)) [L789] 3 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L790] 3 z$r_buff0_thd3 = weak$$choice2 ? z$r_buff0_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff0_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3)) [L791] 3 z$r_buff1_thd3 = weak$$choice2 ? z$r_buff1_thd3 : (!z$w_buff0_used || !z$r_buff0_thd3 && !z$w_buff1_used || !z$r_buff0_thd3 && !z$r_buff1_thd3 ? z$r_buff1_thd3 : (z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L792] 3 __unbuffered_p2_EAX = z [L793] 3 z = z$flush_delayed ? z$mem_tmp : z [L794] 3 z$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, z=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L799] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L801] 3 return 0; [L822] 4 z = z$w_buff0_used && z$r_buff0_thd4 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd4 ? z$w_buff1 : z) [L823] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L824] 4 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$w_buff1_used [L825] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L826] 4 z$r_buff1_thd4 = z$w_buff0_used && z$r_buff0_thd4 || z$w_buff1_used && z$r_buff1_thd4 ? (_Bool)0 : z$r_buff1_thd4 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L756] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L758] 1 return 0; [L829] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L831] 4 return 0; [L771] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L773] 2 return 0; [L853] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L855] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L855] RET 0 assume_abort_if_not(main$tmp_guard0) [L857] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L858] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L859] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L860] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L861] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1413={5:0}, t1414={6:0}, t1415={7:0}, t1416={3:0}, weak$$choice0=49, weak$$choice2=255, x=2, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L864] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 0) [L866] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, z=1, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff0_thd4=1, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$r_buff1_thd4=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 849]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 845]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 847]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 851]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 165 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 622 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 515 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 119 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1189 IncrementalHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 67 mSDtfsCounter, 1189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=576occurred in iteration=8, InterpolantAutomatonStates: 65, 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, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 220 NumberOfCodeBlocks, 220 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 1376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 14:21:18,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9c9c2d4-31fe-4cb8-8b60-0b96277debab/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE