./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.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_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/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_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/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_8cb72bc7-994e-4202-b17b-90d94987bed3/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 a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 --- 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 18:43:34,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:43:34,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:43:34,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:43:34,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:43:34,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:43:34,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:43:34,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:43:34,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:43:34,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:43:34,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:43:34,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:43:34,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:43:34,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:43:34,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:43:34,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:43:34,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:43:34,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:43:34,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:43:34,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:43:34,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:43:34,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:43:34,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:43:34,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:43:34,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:43:34,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:43:34,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:43:34,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:43:34,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:43:34,397 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:43:34,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:43:34,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:43:34,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:43:34,399 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:43:34,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:43:34,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:43:34,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:43:34,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:43:34,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:43:34,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:43:34,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:43:34,403 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:43:34,423 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:43:34,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:43:34,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:43:34,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:43:34,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:43:34,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:43:34,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:43:34,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:43:34,425 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:43:34,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:43:34,426 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:43:34,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:43:34,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:43:34,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:43:34,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:43:34,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:43:34,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:43:34,427 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:43:34,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:43:34,427 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:43:34,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:43:34,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:43:34,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:43:34,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:43:34,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:43:34,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:43:34,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:43:34,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:43:34,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:43:34,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:43:34,429 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:43:34,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:43:34,429 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:43:34,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:43:34,429 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:43:34,429 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_8cb72bc7-994e-4202-b17b-90d94987bed3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a650c00976061981bc34910bafee4d11d94c16289374f008af5a1f8d17e97036 [2022-12-13 18:43:34,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:43:34,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:43:34,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:43:34,638 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:43:34,638 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:43:34,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 18:43:37,245 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:43:37,427 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:43:37,427 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 18:43:37,438 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/data/ae187e942/9bcd650ceea34d98be467e2464dd88ce/FLAG722849311 [2022-12-13 18:43:37,452 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/data/ae187e942/9bcd650ceea34d98be467e2464dd88ce [2022-12-13 18:43:37,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:43:37,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:43:37,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:43:37,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:43:37,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:43:37,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66fc0a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37, skipping insertion in model container [2022-12-13 18:43:37,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:43:37,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:43:37,610 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_8cb72bc7-994e-4202-b17b-90d94987bed3/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-12-13 18:43:37,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,717 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,718 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,720 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,721 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,722 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,723 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,725 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,732 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:43:37,750 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:43:37,759 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_8cb72bc7-994e-4202-b17b-90d94987bed3/sv-benchmarks/c/pthread-wmm/mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2022-12-13 18:43:37,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,776 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,777 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,779 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,782 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,784 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,786 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,789 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:43:37,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:43:37,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:43:37,821 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:43:37,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37 WrapperNode [2022-12-13 18:43:37,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:43:37,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:43:37,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:43:37,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:43:37,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,858 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 157 [2022-12-13 18:43:37,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:43:37,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:43:37,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:43:37,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:43:37,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:43:37,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:43:37,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:43:37,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:43:37,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (1/1) ... [2022-12-13 18:43:37,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:43:37,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:43:37,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:43:37,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 18:43:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 18:43:37,944 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 18:43:37,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 18:43:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 18:43:37,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 18:43:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 18:43:37,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 18:43:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:43:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:43:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:43:37,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:43:37,946 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 18:43:38,058 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:43:38,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:43:38,361 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:43:38,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:43:38,467 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:43:38,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:43:38 BoogieIcfgContainer [2022-12-13 18:43:38,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:43:38,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:43:38,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:43:38,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:43:38,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:43:37" (1/3) ... [2022-12-13 18:43:38,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd2a2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:43:38, skipping insertion in model container [2022-12-13 18:43:38,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:43:37" (2/3) ... [2022-12-13 18:43:38,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd2a2f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:43:38, skipping insertion in model container [2022-12-13 18:43:38,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:43:38" (3/3) ... [2022-12-13 18:43:38,476 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2022-12-13 18:43:38,482 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:43:38,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:43:38,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 18:43:38,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:43:38,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 18:43:38,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 132 transitions, 284 flow [2022-12-13 18:43:38,609 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-13 18:43:38,609 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:43:38,613 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 61 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 18:43:38,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 132 transitions, 284 flow [2022-12-13 18:43:38,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 268 flow [2022-12-13 18:43:38,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:43:38,628 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-13 18:43:38,630 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 128 transitions, 268 flow [2022-12-13 18:43:38,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 268 flow [2022-12-13 18:43:38,652 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2022-12-13 18:43:38,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:43:38,653 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 61 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-12-13 18:43:38,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 2952 [2022-12-13 18:43:42,591 INFO L134 LiptonReduction]: Checked pairs total: 7218 [2022-12-13 18:43:42,592 INFO L136 LiptonReduction]: Total number of compositions: 113 [2022-12-13 18:43:42,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:43:42,610 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;@5295a516, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:43:42,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 18:43:42,616 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2022-12-13 18:43:42,616 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:43:42,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:42,617 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:42,617 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 18:43:42,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:42,621 INFO L85 PathProgramCache]: Analyzing trace with hash -27501721, now seen corresponding path program 1 times [2022-12-13 18:43:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:42,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741486908] [2022-12-13 18:43:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:42,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:42,964 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 18:43:42,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741486908] [2022-12-13 18:43:42,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741486908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:42,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:42,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:43:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907586989] [2022-12-13 18:43:42,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:42,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:42,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 245 [2022-12-13 18:43:42,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 18:43:42,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:42,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 245 [2022-12-13 18:43:42,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:43,429 INFO L130 PetriNetUnfolder]: 2075/3097 cut-off events. [2022-12-13 18:43:43,429 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 18:43:43,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6093 conditions, 3097 events. 2075/3097 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16532 event pairs, 518 based on Foata normal form. 0/2940 useless extension candidates. Maximal degree in co-relation 6081. Up to 2098 conditions per place. [2022-12-13 18:43:43,450 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 29 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2022-12-13 18:43:43,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 152 flow [2022-12-13 18:43:43,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-12-13 18:43:43,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.527891156462585 [2022-12-13 18:43:43,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-12-13 18:43:43,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-12-13 18:43:43,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:43,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-12-13 18:43:43,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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 18:43:43,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:43:43,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:43:43,480 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 66 flow. Second operand 3 states and 388 transitions. [2022-12-13 18:43:43,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 152 flow [2022-12-13 18:43:43,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 18:43:43,486 INFO L231 Difference]: Finished difference. Result has 37 places, 25 transitions, 62 flow [2022-12-13 18:43:43,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=37, PETRI_TRANSITIONS=25} [2022-12-13 18:43:43,491 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2022-12-13 18:43:43,491 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 25 transitions, 62 flow [2022-12-13 18:43:43,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 18:43:43,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:43,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:43,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:43:43,492 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 18:43:43,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash -659265069, now seen corresponding path program 1 times [2022-12-13 18:43:43,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:43,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612135312] [2022-12-13 18:43:43,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:43,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:43,633 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 18:43:43,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:43,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612135312] [2022-12-13 18:43:43,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612135312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:43,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:43,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:43:43,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879418414] [2022-12-13 18:43:43,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:43,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:43:43,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:43:43,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:43:43,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 245 [2022-12-13 18:43:43,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 18:43:43,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:43,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 245 [2022-12-13 18:43:43,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:43,959 INFO L130 PetriNetUnfolder]: 2213/3259 cut-off events. [2022-12-13 18:43:43,959 INFO L131 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-12-13 18:43:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 3259 events. 2213/3259 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 16785 event pairs, 441 based on Foata normal form. 24/3273 useless extension candidates. Maximal degree in co-relation 6651. Up to 2835 conditions per place. [2022-12-13 18:43:43,972 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2022-12-13 18:43:43,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 168 flow [2022-12-13 18:43:43,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:43,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:43,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-12-13 18:43:43,976 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-13 18:43:43,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-12-13 18:43:43,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-12-13 18:43:43,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:43,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-12-13 18:43:43,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 18:43:43,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:43:43,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:43:43,983 INFO L175 Difference]: Start difference. First operand has 37 places, 25 transitions, 62 flow. Second operand 3 states and 385 transitions. [2022-12-13 18:43:43,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 168 flow [2022-12-13 18:43:43,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:43:43,985 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 77 flow [2022-12-13 18:43:43,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2022-12-13 18:43:43,985 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2022-12-13 18:43:43,985 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 77 flow [2022-12-13 18:43:43,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 18:43:43,986 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:43,986 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:43:43,986 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 18:43:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1037618042, now seen corresponding path program 1 times [2022-12-13 18:43:43,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:43,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796912433] [2022-12-13 18:43:43,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:43,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:44,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:43:44,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:44,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796912433] [2022-12-13 18:43:44,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796912433] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:44,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:44,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217742981] [2022-12-13 18:43:44,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:44,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:43:44,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:44,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:43:44,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:43:44,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 245 [2022-12-13 18:43:44,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 18:43:44,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:44,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 245 [2022-12-13 18:43:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:45,430 INFO L130 PetriNetUnfolder]: 5912/8389 cut-off events. [2022-12-13 18:43:45,430 INFO L131 PetriNetUnfolder]: For 890/890 co-relation queries the response was YES. [2022-12-13 18:43:45,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18451 conditions, 8389 events. 5912/8389 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 44928 event pairs, 505 based on Foata normal form. 250/8637 useless extension candidates. Maximal degree in co-relation 18440. Up to 5208 conditions per place. [2022-12-13 18:43:45,468 INFO L137 encePairwiseOnDemand]: 234/245 looper letters, 51 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2022-12-13 18:43:45,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 66 transitions, 308 flow [2022-12-13 18:43:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:43:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:43:45,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2022-12-13 18:43:45,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5010204081632653 [2022-12-13 18:43:45,470 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 491 transitions. [2022-12-13 18:43:45,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 491 transitions. [2022-12-13 18:43:45,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:45,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 491 transitions. [2022-12-13 18:43:45,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 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 18:43:45,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 18:43:45,473 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 18:43:45,473 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 77 flow. Second operand 4 states and 491 transitions. [2022-12-13 18:43:45,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 66 transitions, 308 flow [2022-12-13 18:43:45,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 66 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:43:45,474 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 190 flow [2022-12-13 18:43:45,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2022-12-13 18:43:45,475 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2022-12-13 18:43:45,475 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 190 flow [2022-12-13 18:43:45,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 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 18:43:45,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:45,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:45,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:43:45,476 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 18:43:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:45,476 INFO L85 PathProgramCache]: Analyzing trace with hash 2098851565, now seen corresponding path program 1 times [2022-12-13 18:43:45,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:45,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642346917] [2022-12-13 18:43:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:45,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:46,029 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 18:43:46,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:46,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642346917] [2022-12-13 18:43:46,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642346917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:46,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:46,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:43:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262862036] [2022-12-13 18:43:46,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:46,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:43:46,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:43:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:43:46,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 245 [2022-12-13 18:43:46,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:46,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:46,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 245 [2022-12-13 18:43:46,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:46,979 INFO L130 PetriNetUnfolder]: 7316/10407 cut-off events. [2022-12-13 18:43:46,979 INFO L131 PetriNetUnfolder]: For 7569/7575 co-relation queries the response was YES. [2022-12-13 18:43:46,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30349 conditions, 10407 events. 7316/10407 cut-off events. For 7569/7575 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 56788 event pairs, 1589 based on Foata normal form. 166/10573 useless extension candidates. Maximal degree in co-relation 30334. Up to 4724 conditions per place. [2022-12-13 18:43:47,020 INFO L137 encePairwiseOnDemand]: 234/245 looper letters, 55 selfloop transitions, 20 changer transitions 0/76 dead transitions. [2022-12-13 18:43:47,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 76 transitions, 470 flow [2022-12-13 18:43:47,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:43:47,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:43:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 489 transitions. [2022-12-13 18:43:47,022 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4989795918367347 [2022-12-13 18:43:47,022 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 489 transitions. [2022-12-13 18:43:47,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 489 transitions. [2022-12-13 18:43:47,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:47,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 489 transitions. [2022-12-13 18:43:47,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.25) internal successors, (489), 4 states have internal predecessors, (489), 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 18:43:47,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 18:43:47,025 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 18:43:47,025 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 190 flow. Second operand 4 states and 489 transitions. [2022-12-13 18:43:47,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 76 transitions, 470 flow [2022-12-13 18:43:47,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 76 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:43:47,042 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 356 flow [2022-12-13 18:43:47,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2022-12-13 18:43:47,043 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2022-12-13 18:43:47,043 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 356 flow [2022-12-13 18:43:47,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:47,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:47,043 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:47,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:43:47,044 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 18:43:47,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:47,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2098915952, now seen corresponding path program 1 times [2022-12-13 18:43:47,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:47,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432355977] [2022-12-13 18:43:47,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:47,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:47,412 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 18:43:47,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:47,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432355977] [2022-12-13 18:43:47,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432355977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:47,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:47,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:43:47,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219913528] [2022-12-13 18:43:47,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:47,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:43:47,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:47,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:43:47,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:43:47,430 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 245 [2022-12-13 18:43:47,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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 18:43:47,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:47,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 245 [2022-12-13 18:43:47,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:48,270 INFO L130 PetriNetUnfolder]: 5530/8296 cut-off events. [2022-12-13 18:43:48,270 INFO L131 PetriNetUnfolder]: For 18016/18412 co-relation queries the response was YES. [2022-12-13 18:43:48,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28179 conditions, 8296 events. 5530/8296 cut-off events. For 18016/18412 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 49717 event pairs, 1059 based on Foata normal form. 212/8450 useless extension candidates. Maximal degree in co-relation 28159. Up to 5660 conditions per place. [2022-12-13 18:43:48,300 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 51 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2022-12-13 18:43:48,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 69 transitions, 588 flow [2022-12-13 18:43:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:43:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:43:48,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-12-13 18:43:48,301 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-13 18:43:48,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-12-13 18:43:48,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-12-13 18:43:48,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:48,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-12-13 18:43:48,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 18:43:48,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:43:48,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:43:48,304 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 356 flow. Second operand 3 states and 385 transitions. [2022-12-13 18:43:48,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 69 transitions, 588 flow [2022-12-13 18:43:48,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 576 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-12-13 18:43:48,318 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 365 flow [2022-12-13 18:43:48,318 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=365, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2022-12-13 18:43:48,318 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2022-12-13 18:43:48,319 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 365 flow [2022-12-13 18:43:48,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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 18:43:48,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:48,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:48,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:43:48,319 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 18:43:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1207416978, now seen corresponding path program 1 times [2022-12-13 18:43:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:48,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666623247] [2022-12-13 18:43:48,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:48,683 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 18:43:48,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:48,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666623247] [2022-12-13 18:43:48,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666623247] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:48,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:48,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:43:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57030613] [2022-12-13 18:43:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:48,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:43:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:43:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:43:48,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 245 [2022-12-13 18:43:48,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 365 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 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 18:43:48,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:48,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 245 [2022-12-13 18:43:48,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:49,560 INFO L130 PetriNetUnfolder]: 6252/9344 cut-off events. [2022-12-13 18:43:49,561 INFO L131 PetriNetUnfolder]: For 21553/22054 co-relation queries the response was YES. [2022-12-13 18:43:49,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31971 conditions, 9344 events. 6252/9344 cut-off events. For 21553/22054 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 56587 event pairs, 1153 based on Foata normal form. 293/9527 useless extension candidates. Maximal degree in co-relation 31948. Up to 4864 conditions per place. [2022-12-13 18:43:49,595 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 66 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2022-12-13 18:43:49,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 90 transitions, 773 flow [2022-12-13 18:43:49,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:43:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 18:43:49,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 509 transitions. [2022-12-13 18:43:49,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5193877551020408 [2022-12-13 18:43:49,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 509 transitions. [2022-12-13 18:43:49,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 509 transitions. [2022-12-13 18:43:49,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:49,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 509 transitions. [2022-12-13 18:43:49,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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 18:43:49,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 18:43:49,600 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 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 18:43:49,600 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 365 flow. Second operand 4 states and 509 transitions. [2022-12-13 18:43:49,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 90 transitions, 773 flow [2022-12-13 18:43:49,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 725 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 18:43:49,625 INFO L231 Difference]: Finished difference. Result has 52 places, 57 transitions, 421 flow [2022-12-13 18:43:49,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=52, PETRI_TRANSITIONS=57} [2022-12-13 18:43:49,625 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2022-12-13 18:43:49,625 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 57 transitions, 421 flow [2022-12-13 18:43:49,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 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 18:43:49,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:49,626 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:43:49,626 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 18:43:49,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2090308503, now seen corresponding path program 1 times [2022-12-13 18:43:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:49,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369706576] [2022-12-13 18:43:49,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:50,783 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 18:43:50,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:50,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369706576] [2022-12-13 18:43:50,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369706576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:50,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:50,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:43:50,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142377669] [2022-12-13 18:43:50,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:50,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:43:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:43:50,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:43:50,856 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 245 [2022-12-13 18:43:50,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 57 transitions, 421 flow. Second operand has 7 states, 7 states have (on average 105.28571428571429) internal successors, (737), 7 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:50,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:50,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 245 [2022-12-13 18:43:50,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:52,315 INFO L130 PetriNetUnfolder]: 12424/17365 cut-off events. [2022-12-13 18:43:52,315 INFO L131 PetriNetUnfolder]: For 31737/31737 co-relation queries the response was YES. [2022-12-13 18:43:52,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61510 conditions, 17365 events. 12424/17365 cut-off events. For 31737/31737 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 95396 event pairs, 966 based on Foata normal form. 56/17421 useless extension candidates. Maximal degree in co-relation 61487. Up to 8223 conditions per place. [2022-12-13 18:43:52,374 INFO L137 encePairwiseOnDemand]: 233/245 looper letters, 94 selfloop transitions, 54 changer transitions 22/170 dead transitions. [2022-12-13 18:43:52,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 170 transitions, 1478 flow [2022-12-13 18:43:52,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:43:52,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:43:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 813 transitions. [2022-12-13 18:43:52,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4740524781341108 [2022-12-13 18:43:52,377 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 813 transitions. [2022-12-13 18:43:52,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 813 transitions. [2022-12-13 18:43:52,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:52,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 813 transitions. [2022-12-13 18:43:52,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.14285714285714) internal successors, (813), 7 states have internal predecessors, (813), 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 18:43:52,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 18:43:52,381 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 18:43:52,381 INFO L175 Difference]: Start difference. First operand has 52 places, 57 transitions, 421 flow. Second operand 7 states and 813 transitions. [2022-12-13 18:43:52,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 170 transitions, 1478 flow [2022-12-13 18:43:52,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 170 transitions, 1455 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:43:52,425 INFO L231 Difference]: Finished difference. Result has 62 places, 93 transitions, 972 flow [2022-12-13 18:43:52,425 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=972, PETRI_PLACES=62, PETRI_TRANSITIONS=93} [2022-12-13 18:43:52,425 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2022-12-13 18:43:52,425 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 93 transitions, 972 flow [2022-12-13 18:43:52,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.28571428571429) internal successors, (737), 7 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:43:52,426 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:52,426 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:52,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:43:52,426 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 18:43:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1625764077, now seen corresponding path program 1 times [2022-12-13 18:43:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:52,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227231580] [2022-12-13 18:43:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:52,537 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 18:43:52,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:52,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227231580] [2022-12-13 18:43:52,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227231580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:52,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:52,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:43:52,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25648320] [2022-12-13 18:43:52,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:52,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:43:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:52,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:43:52,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:43:52,551 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 245 [2022-12-13 18:43:52,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 93 transitions, 972 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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 18:43:52,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:52,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 245 [2022-12-13 18:43:52,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:53,699 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([381] L780-->L787: Formula: (let ((.cse3 (not (= (mod v_~z$r_buff1_thd3~0_24 256) 0))) (.cse5 (not (= (mod v_~z$r_buff0_thd3~0_26 256) 0))) (.cse4 (not (= (mod v_~z$w_buff0_used~0_93 256) 0)))) (let ((.cse0 (and .cse5 .cse4)) (.cse1 (and (not (= (mod v_~z$w_buff0_used~0_94 256) 0)) .cse5)) (.cse2 (and (not (= (mod v_~z$w_buff1_used~0_81 256) 0)) .cse3))) (and (= v_~z$r_buff0_thd3~0_25 (ite .cse0 0 v_~z$r_buff0_thd3~0_26)) (= v_~z$w_buff0_used~0_93 (ite .cse1 0 v_~z$w_buff0_used~0_94)) (= (ite (or .cse0 .cse2) 0 v_~z$w_buff1_used~0_81) v_~z$w_buff1_used~0_80) (= v_~z$r_buff1_thd3~0_23 (ite (or (and .cse3 (not (= (mod v_~z$w_buff1_used~0_80 256) 0))) (and (not (= (mod v_~z$r_buff0_thd3~0_25 256) 0)) .cse4)) 0 v_~z$r_buff1_thd3~0_24)) (= v_~z~0_49 (ite .cse1 v_~z$w_buff0~0_36 (ite .cse2 v_~z$w_buff1~0_27 v_~z~0_50)))))) InVars {~z$w_buff0_used~0=v_~z$w_buff0_used~0_94, ~z$w_buff0~0=v_~z$w_buff0~0_36, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_24, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_81, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_26, ~z$w_buff1~0=v_~z$w_buff1~0_27, ~z~0=v_~z~0_50} OutVars{~z$w_buff0_used~0=v_~z$w_buff0_used~0_93, ~z$w_buff0~0=v_~z$w_buff0~0_36, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_23, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_80, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_25, ~z$w_buff1~0=v_~z$w_buff1~0_27, ~z~0=v_~z~0_49} AuxVars[] AssignedVars[~z$w_buff0_used~0, ~z$r_buff1_thd3~0, ~z$w_buff1_used~0, ~z$r_buff0_thd3~0, ~z~0][202], [18#L852true, Black: 189#(and (<= 0 ~z$r_buff0_thd0~0) (<= ~z$r_buff0_thd0~0 0) (= ~z~0 1) (<= ~z$r_buff0_thd3~0 0) (<= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256)) (<= 0 ~z$r_buff0_thd3~0) (<= 0 ~z$r_buff1_thd0~0) (= ~z$w_buff0~0 0) (= ~z$w_buff0_used~0 0)), Black: 194#(and (<= 0 ~z$r_buff0_thd0~0) (<= ~z$r_buff0_thd0~0 0) (<= ~z$r_buff0_thd3~0 0) (<= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256)) (<= 0 ~z$r_buff0_thd3~0) (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EAX~0 0)) (not (= 2 ~z~0))) (<= 0 ~z$r_buff1_thd0~0) (= ~z$w_buff0~0 0) (= ~z$w_buff0_used~0 0)), Black: 192#(and (or (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0) (not (= 2 ~y~0)) (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0) (not (= 2 ~x~0)) (not (= ~z$w_buff0~0 2)) (not (= ~__unbuffered_p3_EAX~0 0))) (or (not (= 2 ~y~0)) (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0) (not (= ~z$w_buff1~0 2)) (not (= 2 ~x~0)) (= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256)) (not (= ~__unbuffered_p3_EAX~0 0)) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0)) (= ~z$w_buff1_used~0 (* 256 (div ~z$w_buff1_used~0 256)))) (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EAX~0 0)) (and (not (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0)) (or (not (= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256))) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0))) (or (not (= ~z$w_buff1_used~0 (* 256 (div ~z$w_buff1_used~0 256)))) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0)))) (not (= 2 ~z~0)))), 104#L787true, Black: 191#(and (<= ~z$r_buff1_thd3~0 (* 256 (div ~z$r_buff1_thd3~0 256))) (< 0 (+ (div ~z$r_buff0_thd0~0 256) 1)) (<= ~z$r_buff0_thd0~0 (* 256 (div ~z$r_buff0_thd0~0 256))) (not (= ~z$w_buff1~0 ~z$w_buff0~0)) (not (<= (+ (div ~z$r_buff0_thd3~0 256) 1) 0)) (= ~z$w_buff0~0 2) (not (= ~z$w_buff0~0 ~z~0)) (<= ~z$r_buff0_thd3~0 (* 256 (div ~z$r_buff0_thd3~0 256))) (<= 0 ~z$r_buff1_thd3~0)), Black: 188#(and (<= 0 ~z$r_buff0_thd0~0) (<= ~z$r_buff0_thd0~0 0) (<= ~z$r_buff0_thd3~0 0) (<= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256)) (<= 0 ~z$r_buff0_thd3~0) (<= 0 ~z$r_buff1_thd0~0) (= ~z$w_buff0~0 0) (= ~z$w_buff0_used~0 0)), 86#P3EXITtrue, 186#true, P2Thread1of1ForFork0InUse, P0Thread1of1ForFork1InUse, 155#true, P1Thread1of1ForFork3InUse, P3Thread1of1ForFork2InUse, 165#(= ~y~0 1), Black: 152#(<= ~y~0 0), 202#true, Black: 157#(<= ~x~0 0), Black: 158#(and (or (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0) (not (= 2 ~y~0)) (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0) (not (= 2 ~x~0)) (not (= ~z$w_buff0~0 2)) (not (= ~__unbuffered_p3_EAX~0 0))) (or (not (= 2 ~y~0)) (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0) (not (= ~z$w_buff1~0 2)) (not (= 2 ~x~0)) (= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256)) (not (= ~__unbuffered_p3_EAX~0 0)) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0)) (= ~z$w_buff1_used~0 (* 256 (div ~z$w_buff1_used~0 256)))) (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EAX~0 0)) (and (not (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0)) (or (not (= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256))) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0))) (or (not (= ~z$w_buff1_used~0 (* 256 (div ~z$w_buff1_used~0 256)))) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0)))) (not (= 2 ~z~0)))), Black: 166#(and (or (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0) (not (= 2 ~y~0)) (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0) (not (= 2 ~x~0)) (not (= ~z$w_buff0~0 2)) (not (= ~__unbuffered_p3_EAX~0 0))) (or (not (= 2 ~y~0)) (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0) (not (= ~z$w_buff1~0 2)) (not (= 2 ~x~0)) (= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256)) (not (= ~__unbuffered_p3_EAX~0 0)) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0)) (= ~z$w_buff1_used~0 (* 256 (div ~z$w_buff1_used~0 256)))) (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p3_EAX~0 0)) (and (not (= (* 256 (div ~z$w_buff0_used~0 256)) ~z$w_buff0_used~0)) (or (not (= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256))) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0))) (or (not (= ~z$w_buff1_used~0 (* 256 (div ~z$w_buff1_used~0 256)))) (not (= (* 256 (div ~z$r_buff0_thd0~0 256)) ~z$r_buff0_thd0~0)))) (not (= 2 ~z~0)))), 100#P1EXITtrue, Black: 163#true, Black: 173#(and (<= ~z$r_buff1_thd0~0 (* (div ~z$r_buff1_thd0~0 256) 256)) (= ~z$w_buff1~0 ~z$w_buff0~0) (<= 0 ~z$r_buff1_thd0~0) (= ~z$w_buff0~0 0) (not (= 2 ~z~0))), Black: 181#(and (< 0 (+ (div ~z$r_buff0_thd0~0 256) 1)) (<= ~z$r_buff0_thd0~0 (* 256 (div ~z$r_buff0_thd0~0 256))) (= ~z$w_buff1~0 0) (not (= 2 ~z~0))), 129#L750true]) [2022-12-13 18:43:53,699 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2022-12-13 18:43:53,699 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 18:43:53,699 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 18:43:53,699 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 18:43:53,792 INFO L130 PetriNetUnfolder]: 7636/11459 cut-off events. [2022-12-13 18:43:53,792 INFO L131 PetriNetUnfolder]: For 65634/69138 co-relation queries the response was YES. [2022-12-13 18:43:53,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50228 conditions, 11459 events. 7636/11459 cut-off events. For 65634/69138 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 75479 event pairs, 1197 based on Foata normal form. 2503/13558 useless extension candidates. Maximal degree in co-relation 50199. Up to 7343 conditions per place. [2022-12-13 18:43:53,848 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 162 selfloop transitions, 10 changer transitions 35/231 dead transitions. [2022-12-13 18:43:53,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 231 transitions, 2877 flow [2022-12-13 18:43:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:43:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:43:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 610 transitions. [2022-12-13 18:43:53,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2022-12-13 18:43:53,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 610 transitions. [2022-12-13 18:43:53,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 610 transitions. [2022-12-13 18:43:53,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:53,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 610 transitions. [2022-12-13 18:43:53,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 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 18:43:53,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 18:43:53,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 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 18:43:53,854 INFO L175 Difference]: Start difference. First operand has 62 places, 93 transitions, 972 flow. Second operand 5 states and 610 transitions. [2022-12-13 18:43:53,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 231 transitions, 2877 flow [2022-12-13 18:43:53,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 231 transitions, 2861 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-12-13 18:43:53,892 INFO L231 Difference]: Finished difference. Result has 69 places, 100 transitions, 1044 flow [2022-12-13 18:43:53,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1044, PETRI_PLACES=69, PETRI_TRANSITIONS=100} [2022-12-13 18:43:53,893 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 29 predicate places. [2022-12-13 18:43:53,893 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 100 transitions, 1044 flow [2022-12-13 18:43:53,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 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 18:43:53,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:53,893 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 18:43:53,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:43:53,894 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 18:43:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1508991070, now seen corresponding path program 1 times [2022-12-13 18:43:53,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:53,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448997574] [2022-12-13 18:43:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:54,964 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 18:43:54,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:54,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448997574] [2022-12-13 18:43:54,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448997574] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:54,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:54,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:43:54,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678023421] [2022-12-13 18:43:54,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:54,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:43:54,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:54,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:43:54,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:43:55,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 245 [2022-12-13 18:43:55,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 100 transitions, 1044 flow. Second operand has 7 states, 7 states have (on average 105.42857142857143) internal successors, (738), 7 states have internal predecessors, (738), 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 18:43:55,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:55,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 245 [2022-12-13 18:43:55,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:56,901 INFO L130 PetriNetUnfolder]: 12753/19027 cut-off events. [2022-12-13 18:43:56,901 INFO L131 PetriNetUnfolder]: For 87309/87309 co-relation queries the response was YES. [2022-12-13 18:43:56,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95345 conditions, 19027 events. 12753/19027 cut-off events. For 87309/87309 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 123118 event pairs, 1128 based on Foata normal form. 167/19194 useless extension candidates. Maximal degree in co-relation 95311. Up to 7602 conditions per place. [2022-12-13 18:43:56,984 INFO L137 encePairwiseOnDemand]: 233/245 looper letters, 128 selfloop transitions, 69 changer transitions 30/227 dead transitions. [2022-12-13 18:43:56,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 227 transitions, 2548 flow [2022-12-13 18:43:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:43:56,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 18:43:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 805 transitions. [2022-12-13 18:43:56,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2022-12-13 18:43:56,987 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 805 transitions. [2022-12-13 18:43:56,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 805 transitions. [2022-12-13 18:43:56,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:56,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 805 transitions. [2022-12-13 18:43:56,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 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 18:43:56,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 18:43:56,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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 18:43:56,991 INFO L175 Difference]: Start difference. First operand has 69 places, 100 transitions, 1044 flow. Second operand 7 states and 805 transitions. [2022-12-13 18:43:56,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 227 transitions, 2548 flow [2022-12-13 18:43:57,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 227 transitions, 2529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:43:57,105 INFO L231 Difference]: Finished difference. Result has 79 places, 131 transitions, 1751 flow [2022-12-13 18:43:57,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1751, PETRI_PLACES=79, PETRI_TRANSITIONS=131} [2022-12-13 18:43:57,105 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2022-12-13 18:43:57,105 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 131 transitions, 1751 flow [2022-12-13 18:43:57,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.42857142857143) internal successors, (738), 7 states have internal predecessors, (738), 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 18:43:57,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:57,106 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 18:43:57,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:43:57,106 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 18:43:57,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:57,106 INFO L85 PathProgramCache]: Analyzing trace with hash -147635351, now seen corresponding path program 1 times [2022-12-13 18:43:57,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:57,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656290696] [2022-12-13 18:43:57,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:57,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:57,211 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 18:43:57,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:57,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656290696] [2022-12-13 18:43:57,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656290696] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:57,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:57,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:43:57,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526080921] [2022-12-13 18:43:57,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:57,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:43:57,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:43:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:43:57,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 245 [2022-12-13 18:43:57,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 131 transitions, 1751 flow. Second operand has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 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 18:43:57,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:57,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 245 [2022-12-13 18:43:57,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:43:58,314 INFO L130 PetriNetUnfolder]: 5376/8771 cut-off events. [2022-12-13 18:43:58,314 INFO L131 PetriNetUnfolder]: For 86284/89401 co-relation queries the response was YES. [2022-12-13 18:43:58,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47603 conditions, 8771 events. 5376/8771 cut-off events. For 86284/89401 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 62300 event pairs, 441 based on Foata normal form. 2121/10667 useless extension candidates. Maximal degree in co-relation 47563. Up to 4172 conditions per place. [2022-12-13 18:43:58,359 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 253 selfloop transitions, 14 changer transitions 27/331 dead transitions. [2022-12-13 18:43:58,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 331 transitions, 5024 flow [2022-12-13 18:43:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:43:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:43:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 734 transitions. [2022-12-13 18:43:58,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4993197278911565 [2022-12-13 18:43:58,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 734 transitions. [2022-12-13 18:43:58,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 734 transitions. [2022-12-13 18:43:58,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:43:58,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 734 transitions. [2022-12-13 18:43:58,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.33333333333333) internal successors, (734), 6 states have internal predecessors, (734), 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 18:43:58,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 18:43:58,366 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 18:43:58,366 INFO L175 Difference]: Start difference. First operand has 79 places, 131 transitions, 1751 flow. Second operand 6 states and 734 transitions. [2022-12-13 18:43:58,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 331 transitions, 5024 flow [2022-12-13 18:43:58,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 331 transitions, 4929 flow, removed 47 selfloop flow, removed 2 redundant places. [2022-12-13 18:43:58,582 INFO L231 Difference]: Finished difference. Result has 83 places, 134 transitions, 1754 flow [2022-12-13 18:43:58,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1754, PETRI_PLACES=83, PETRI_TRANSITIONS=134} [2022-12-13 18:43:58,582 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2022-12-13 18:43:58,583 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 134 transitions, 1754 flow [2022-12-13 18:43:58,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.2) internal successors, (566), 5 states have internal predecessors, (566), 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 18:43:58,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:43:58,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:43:58,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:43:58,583 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 18:43:58,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:43:58,584 INFO L85 PathProgramCache]: Analyzing trace with hash -96500435, now seen corresponding path program 1 times [2022-12-13 18:43:58,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:43:58,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28630873] [2022-12-13 18:43:58,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:43:58,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:43:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:43:59,151 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 18:43:59,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:43:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28630873] [2022-12-13 18:43:59,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28630873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:43:59,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:43:59,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:43:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088293722] [2022-12-13 18:43:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:43:59,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:43:59,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:43:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:43:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:43:59,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 245 [2022-12-13 18:43:59,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 134 transitions, 1754 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 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 18:43:59,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:43:59,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 245 [2022-12-13 18:43:59,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:44:01,293 INFO L130 PetriNetUnfolder]: 10043/16110 cut-off events. [2022-12-13 18:44:01,293 INFO L131 PetriNetUnfolder]: For 135851/135907 co-relation queries the response was YES. [2022-12-13 18:44:01,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102283 conditions, 16110 events. 10043/16110 cut-off events. For 135851/135907 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 116340 event pairs, 887 based on Foata normal form. 43/16113 useless extension candidates. Maximal degree in co-relation 102240. Up to 7702 conditions per place. [2022-12-13 18:44:01,366 INFO L137 encePairwiseOnDemand]: 233/245 looper letters, 108 selfloop transitions, 45 changer transitions 149/305 dead transitions. [2022-12-13 18:44:01,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 305 transitions, 4289 flow [2022-12-13 18:44:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:44:01,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:44:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 720 transitions. [2022-12-13 18:44:01,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2022-12-13 18:44:01,369 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 720 transitions. [2022-12-13 18:44:01,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 720 transitions. [2022-12-13 18:44:01,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:44:01,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 720 transitions. [2022-12-13 18:44:01,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 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 18:44:01,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 18:44:01,372 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 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 18:44:01,372 INFO L175 Difference]: Start difference. First operand has 83 places, 134 transitions, 1754 flow. Second operand 6 states and 720 transitions. [2022-12-13 18:44:01,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 305 transitions, 4289 flow [2022-12-13 18:44:02,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 305 transitions, 4097 flow, removed 77 selfloop flow, removed 2 redundant places. [2022-12-13 18:44:02,259 INFO L231 Difference]: Finished difference. Result has 88 places, 107 transitions, 1459 flow [2022-12-13 18:44:02,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1459, PETRI_PLACES=88, PETRI_TRANSITIONS=107} [2022-12-13 18:44:02,259 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2022-12-13 18:44:02,259 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 107 transitions, 1459 flow [2022-12-13 18:44:02,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 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 18:44:02,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:44:02,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:44:02,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:44:02,260 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 18:44:02,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:44:02,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1188599559, now seen corresponding path program 2 times [2022-12-13 18:44:02,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:44:02,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728796358] [2022-12-13 18:44:02,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:44:02,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:44:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:44:02,346 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 18:44:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:44:02,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728796358] [2022-12-13 18:44:02,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728796358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:44:02,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:44:02,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:44:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918624267] [2022-12-13 18:44:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:44:02,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:44:02,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:44:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:44:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:44:02,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 245 [2022-12-13 18:44:02,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 107 transitions, 1459 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 18:44:02,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:44:02,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 245 [2022-12-13 18:44:02,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:44:03,472 INFO L130 PetriNetUnfolder]: 5297/9134 cut-off events. [2022-12-13 18:44:03,472 INFO L131 PetriNetUnfolder]: For 84365/84785 co-relation queries the response was YES. [2022-12-13 18:44:03,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54792 conditions, 9134 events. 5297/9134 cut-off events. For 84365/84785 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 68310 event pairs, 1315 based on Foata normal form. 169/9176 useless extension candidates. Maximal degree in co-relation 54747. Up to 4460 conditions per place. [2022-12-13 18:44:03,515 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 98 selfloop transitions, 11 changer transitions 19/142 dead transitions. [2022-12-13 18:44:03,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 142 transitions, 2023 flow [2022-12-13 18:44:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:44:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:44:03,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-12-13 18:44:03,518 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2022-12-13 18:44:03,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-12-13 18:44:03,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-12-13 18:44:03,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:44:03,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-12-13 18:44:03,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 18:44:03,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:44:03,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 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 18:44:03,520 INFO L175 Difference]: Start difference. First operand has 88 places, 107 transitions, 1459 flow. Second operand 3 states and 385 transitions. [2022-12-13 18:44:03,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 142 transitions, 2023 flow [2022-12-13 18:44:03,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 142 transitions, 1964 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-12-13 18:44:03,837 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 1353 flow [2022-12-13 18:44:03,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1353, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2022-12-13 18:44:03,837 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2022-12-13 18:44:03,837 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 1353 flow [2022-12-13 18:44:03,838 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 18:44:03,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:44:03,838 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:44:03,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:44:03,838 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 18:44:03,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:44:03,838 INFO L85 PathProgramCache]: Analyzing trace with hash -643284454, now seen corresponding path program 1 times [2022-12-13 18:44:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:44:03,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186703946] [2022-12-13 18:44:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:44:03,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:44:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:44:03,939 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 18:44:03,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:44:03,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186703946] [2022-12-13 18:44:03,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186703946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:44:03,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:44:03,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:44:03,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439255996] [2022-12-13 18:44:03,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:44:03,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:44:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:44:03,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:44:03,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:44:03,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 245 [2022-12-13 18:44:03,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 1353 flow. Second operand has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:44:03,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:44:03,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 245 [2022-12-13 18:44:03,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:44:04,808 INFO L130 PetriNetUnfolder]: 3849/6808 cut-off events. [2022-12-13 18:44:04,809 INFO L131 PetriNetUnfolder]: For 67981/69232 co-relation queries the response was YES. [2022-12-13 18:44:04,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37173 conditions, 6808 events. 3849/6808 cut-off events. For 67981/69232 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 52521 event pairs, 144 based on Foata normal form. 1159/7811 useless extension candidates. Maximal degree in co-relation 37130. Up to 2984 conditions per place. [2022-12-13 18:44:04,834 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 128 selfloop transitions, 14 changer transitions 129/288 dead transitions. [2022-12-13 18:44:04,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 288 transitions, 4597 flow [2022-12-13 18:44:04,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:44:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 18:44:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 970 transitions. [2022-12-13 18:44:04,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49489795918367346 [2022-12-13 18:44:04,837 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 970 transitions. [2022-12-13 18:44:04,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 970 transitions. [2022-12-13 18:44:04,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:44:04,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 970 transitions. [2022-12-13 18:44:04,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.25) internal successors, (970), 8 states have internal predecessors, (970), 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 18:44:04,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 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 18:44:04,841 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 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 18:44:04,841 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 1353 flow. Second operand 8 states and 970 transitions. [2022-12-13 18:44:04,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 288 transitions, 4597 flow [2022-12-13 18:44:05,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 288 transitions, 4417 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 18:44:05,012 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 1194 flow [2022-12-13 18:44:05,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2022-12-13 18:44:05,013 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2022-12-13 18:44:05,013 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 1194 flow [2022-12-13 18:44:05,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:44:05,013 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:44:05,013 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] [2022-12-13 18:44:05,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:44:05,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 18:44:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:44:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash 343708712, now seen corresponding path program 1 times [2022-12-13 18:44:05,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:44:05,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552790832] [2022-12-13 18:44:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:44:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:44:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:44:05,137 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 18:44:05,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:44:05,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552790832] [2022-12-13 18:44:05,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552790832] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:44:05,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:44:05,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:44:05,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441500059] [2022-12-13 18:44:05,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:44:05,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:44:05,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:44:05,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:44:05,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:44:05,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 245 [2022-12-13 18:44:05,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 1194 flow. Second operand has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 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 18:44:05,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:44:05,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 245 [2022-12-13 18:44:05,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:44:05,765 INFO L130 PetriNetUnfolder]: 1960/3601 cut-off events. [2022-12-13 18:44:05,766 INFO L131 PetriNetUnfolder]: For 36007/36871 co-relation queries the response was YES. [2022-12-13 18:44:05,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21736 conditions, 3601 events. 1960/3601 cut-off events. For 36007/36871 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 25881 event pairs, 103 based on Foata normal form. 528/4045 useless extension candidates. Maximal degree in co-relation 21692. Up to 1459 conditions per place. [2022-12-13 18:44:05,778 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 31 selfloop transitions, 17 changer transitions 173/225 dead transitions. [2022-12-13 18:44:05,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 225 transitions, 3552 flow [2022-12-13 18:44:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:44:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 18:44:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1065 transitions. [2022-12-13 18:44:05,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2022-12-13 18:44:05,781 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1065 transitions. [2022-12-13 18:44:05,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1065 transitions. [2022-12-13 18:44:05,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:44:05,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1065 transitions. [2022-12-13 18:44:05,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.33333333333333) internal successors, (1065), 9 states have internal predecessors, (1065), 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 18:44:05,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 18:44:05,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 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 18:44:05,785 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 1194 flow. Second operand 9 states and 1065 transitions. [2022-12-13 18:44:05,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 225 transitions, 3552 flow [2022-12-13 18:44:05,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 225 transitions, 3429 flow, removed 36 selfloop flow, removed 8 redundant places. [2022-12-13 18:44:05,912 INFO L231 Difference]: Finished difference. Result has 92 places, 39 transitions, 385 flow [2022-12-13 18:44:05,912 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=92, PETRI_TRANSITIONS=39} [2022-12-13 18:44:05,912 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2022-12-13 18:44:05,912 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 39 transitions, 385 flow [2022-12-13 18:44:05,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.71428571428571) internal successors, (789), 7 states have internal predecessors, (789), 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 18:44:05,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:44:05,913 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:44:05,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:44:05,913 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 18:44:05,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:44:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1255371390, now seen corresponding path program 1 times [2022-12-13 18:44:05,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:44:05,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164229797] [2022-12-13 18:44:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:44:05,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:44:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:44:05,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:44:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:44:05,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:44:05,994 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 18:44:05,994 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-12-13 18:44:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-12-13 18:44:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-12-13 18:44:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-12-13 18:44:05,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-12-13 18:44:05,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2022-12-13 18:44:05,997 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-12-13 18:44:05,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:44:05,997 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:44:06,002 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:44:06,002 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:44:06,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:44:06 BasicIcfg [2022-12-13 18:44:06,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:44:06,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:44:06,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:44:06,066 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:44:06,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:43:38" (3/4) ... [2022-12-13 18:44:06,068 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 18:44:06,137 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:44:06,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:44:06,138 INFO L158 Benchmark]: Toolchain (without parser) took 28681.93ms. Allocated memory was 151.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 114.1MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 694.6MB. Max. memory is 16.1GB. [2022-12-13 18:44:06,138 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 122.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:44:06,139 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.89ms. Allocated memory is still 151.0MB. Free memory was 113.6MB in the beginning and 86.5MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 18:44:06,139 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 151.0MB. Free memory was 86.5MB in the beginning and 83.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:44:06,139 INFO L158 Benchmark]: Boogie Preprocessor took 22.25ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:44:06,140 INFO L158 Benchmark]: RCFGBuilder took 587.77ms. Allocated memory is still 151.0MB. Free memory was 81.7MB in the beginning and 118.7MB in the end (delta: -37.0MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. [2022-12-13 18:44:06,140 INFO L158 Benchmark]: TraceAbstraction took 27594.97ms. Allocated memory was 151.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 118.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 685.2MB. Max. memory is 16.1GB. [2022-12-13 18:44:06,140 INFO L158 Benchmark]: Witness Printer took 71.48ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 18:44:06,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 151.0MB. Free memory is still 122.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.89ms. Allocated memory is still 151.0MB. Free memory was 113.6MB in the beginning and 86.5MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 151.0MB. Free memory was 86.5MB in the beginning and 83.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.25ms. Allocated memory is still 151.0MB. Free memory was 83.8MB in the beginning and 81.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.77ms. Allocated memory is still 151.0MB. Free memory was 81.7MB in the beginning and 118.7MB in the end (delta: -37.0MB). Peak memory consumption was 40.8MB. Max. memory is 16.1GB. * TraceAbstraction took 27594.97ms. Allocated memory was 151.0MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 118.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 685.2MB. Max. memory is 16.1GB. * Witness Printer took 71.48ms. Allocated memory is still 2.3GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 139 PlacesBefore, 40 PlacesAfterwards, 128 TransitionsBefore, 27 TransitionsAfterwards, 2952 CoEnabledTransitionPairs, 7 FixpointIterations, 43 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 113 TotalNumberOfCompositions, 7218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3405, independent: 3205, independent conditional: 0, independent unconditional: 3205, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1581, independent: 1532, independent conditional: 0, independent unconditional: 1532, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3405, independent: 1673, independent conditional: 0, independent unconditional: 1673, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 1581, unknown conditional: 0, unknown unconditional: 1581] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, 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_p3_EAX = 0; [L714] 0 int a = 0; [L715] 0 _Bool main$tmp_guard0; [L716] 0 _Bool main$tmp_guard1; [L718] 0 int x = 0; [L720] 0 int y = 0; [L722] 0 int z = 0; [L723] 0 _Bool z$flush_delayed; [L724] 0 int z$mem_tmp; [L725] 0 _Bool z$r_buff0_thd0; [L726] 0 _Bool z$r_buff0_thd1; [L727] 0 _Bool z$r_buff0_thd2; [L728] 0 _Bool z$r_buff0_thd3; [L729] 0 _Bool z$r_buff0_thd4; [L730] 0 _Bool z$r_buff1_thd0; [L731] 0 _Bool z$r_buff1_thd1; [L732] 0 _Bool z$r_buff1_thd2; [L733] 0 _Bool z$r_buff1_thd3; [L734] 0 _Bool z$r_buff1_thd4; [L735] 0 _Bool z$read_delayed; [L736] 0 int *z$read_delayed_var; [L737] 0 int z$w_buff0; [L738] 0 _Bool z$w_buff0_used; [L739] 0 int z$w_buff1; [L740] 0 _Bool z$w_buff1_used; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1517; [L835] FCALL, FORK 0 pthread_create(&t1517, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1517, ((void *)0), P0, ((void *)0))=-3, t1517={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] [L836] 0 pthread_t t1518; [L837] FCALL, FORK 0 pthread_create(&t1518, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1518, ((void *)0), P1, ((void *)0))=-2, t1517={5:0}, t1518={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] [L838] 0 pthread_t t1519; [L839] FCALL, FORK 0 pthread_create(&t1519, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=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(&t1519, ((void *)0), P2, ((void *)0))=-1, t1517={5:0}, t1518={6:0}, t1519={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] [L840] 0 pthread_t t1520; [L841] FCALL, FORK 0 pthread_create(&t1520, ((void *)0), P3, ((void *)0)) VAL [__unbuffered_cnt=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(&t1520, ((void *)0), P3, ((void *)0))=0, t1517={5:0}, t1518={6:0}, t1519={7:0}, t1520={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] [L796] 4 z$w_buff1 = z$w_buff0 [L797] 4 z$w_buff0 = 2 [L798] 4 z$w_buff1_used = z$w_buff0_used [L799] 4 z$w_buff0_used = (_Bool)1 [L800] CALL 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 4 !(!expression) [L800] RET 4 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L801] 4 z$r_buff1_thd0 = z$r_buff0_thd0 [L802] 4 z$r_buff1_thd1 = z$r_buff0_thd1 [L803] 4 z$r_buff1_thd2 = z$r_buff0_thd2 [L804] 4 z$r_buff1_thd3 = z$r_buff0_thd3 [L805] 4 z$r_buff1_thd4 = z$r_buff0_thd4 [L806] 4 z$r_buff0_thd4 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p3_EAX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L809] 4 __unbuffered_p3_EAX = a VAL [__unbuffered_cnt=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L746] 1 a = 1 VAL [__unbuffered_cnt=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L749] 1 x = 1 VAL [__unbuffered_cnt=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L761] 2 x = 2 VAL [__unbuffered_cnt=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L764] 2 y = 1 VAL [__unbuffered_cnt=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L776] 3 y = 2 VAL [__unbuffered_cnt=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L779] 3 z = 1 VAL [__unbuffered_cnt=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=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L782] 3 z = z$w_buff0_used && z$r_buff0_thd3 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd3 ? z$w_buff1 : z) [L783] 3 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$w_buff0_used [L784] 3 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$w_buff1_used [L785] 3 z$r_buff0_thd3 = z$w_buff0_used && z$r_buff0_thd3 ? (_Bool)0 : z$r_buff0_thd3 [L786] 3 z$r_buff1_thd3 = z$w_buff0_used && z$r_buff0_thd3 || z$w_buff1_used && z$r_buff1_thd3 ? (_Bool)0 : z$r_buff1_thd3 VAL [__unbuffered_cnt=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=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$w_buff0=2, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0] [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L812] 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) [L813] 4 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$w_buff0_used [L814] 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 [L815] 4 z$r_buff0_thd4 = z$w_buff0_used && z$r_buff0_thd4 ? (_Bool)0 : z$r_buff0_thd4 [L816] 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_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$$choice0=0, weak$$choice2=0, x=2, y=2, z=2, 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$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L789] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L791] 3 return 0; [L754] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 1 return 0; [L819] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L821] 4 return 0; [L843] 0 main$tmp_guard0 = __unbuffered_cnt == 4 [L845] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L845] RET 0 assume_abort_if_not(main$tmp_guard0) [L847] 0 z = z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : (z$w_buff1_used && z$r_buff1_thd0 ? z$w_buff1 : z) [L848] 0 z$w_buff0_used = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used [L849] 0 z$w_buff1_used = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$w_buff1_used [L850] 0 z$r_buff0_thd0 = z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0 [L851] 0 z$r_buff1_thd0 = z$w_buff0_used && z$r_buff0_thd0 || z$w_buff1_used && z$r_buff1_thd0 ? (_Bool)0 : z$r_buff1_thd0 VAL [\result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1517={5:0}, t1518={6:0}, t1519={7:0}, t1520={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, z=2, 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$w_buff0=2, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0] [L854] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L855] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L856] 0 z$flush_delayed = weak$$choice2 [L857] 0 z$mem_tmp = z [L858] 0 z = !z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff1) [L859] 0 z$w_buff0 = weak$$choice2 ? z$w_buff0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff0 : z$w_buff0)) [L860] 0 z$w_buff1 = weak$$choice2 ? z$w_buff1 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1 : (z$w_buff0_used && z$r_buff0_thd0 ? z$w_buff1 : z$w_buff1)) [L861] 0 z$w_buff0_used = weak$$choice2 ? z$w_buff0_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff0_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$w_buff0_used)) [L862] 0 z$w_buff1_used = weak$$choice2 ? z$w_buff1_used : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$w_buff1_used : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] 0 z$r_buff0_thd0 = weak$$choice2 ? z$r_buff0_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff0_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : z$r_buff0_thd0)) [L864] 0 z$r_buff1_thd0 = weak$$choice2 ? z$r_buff1_thd0 : (!z$w_buff0_used || !z$r_buff0_thd0 && !z$w_buff1_used || !z$r_buff0_thd0 && !z$r_buff1_thd0 ? z$r_buff1_thd0 : (z$w_buff0_used && z$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L865] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2 && __unbuffered_p3_EAX == 0) [L866] 0 z = z$flush_delayed ? z$mem_tmp : z [L867] 0 z$flush_delayed = (_Bool)0 [L869] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, __unbuffered_cnt=4, __unbuffered_p3_EAX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=53, weak$$choice2=255, x=2, y=2, z=2, z$flush_delayed=0, z$mem_tmp=2, 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$w_buff0=2, z$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: 839]: 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: 835]: 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: 837]: 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: 841]: 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, 166 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: 27.4s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 776 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 617 mSDsluCounter, 352 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 197 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1578 IncrementalHoareTripleChecker+Invalid, 1775 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 197 mSolverCounterUnsat, 117 mSDtfsCounter, 1578 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1754occurred in iteration=10, InterpolantAutomatonStates: 72, 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, 5.3s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 2417 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 18:44:06,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cb72bc7-994e-4202-b17b-90d94987bed3/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