./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R --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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- 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-38b53e6 [2022-11-25 17:44:19,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:44:19,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:44:20,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:44:20,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:44:20,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:44:20,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:44:20,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:44:20,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:44:20,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:44:20,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:44:20,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:44:20,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:44:20,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:44:20,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:44:20,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:44:20,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:44:20,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:44:20,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:44:20,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:44:20,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:44:20,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:44:20,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:44:20,071 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:44:20,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:44:20,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:44:20,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:44:20,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:44:20,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:44:20,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:44:20,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:44:20,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:44:20,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:44:20,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:44:20,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:44:20,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:44:20,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:44:20,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:44:20,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:44:20,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:44:20,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:44:20,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:44:20,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:44:20,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:44:20,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:44:20,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:44:20,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:44:20,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:44:20,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:44:20,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:44:20,118 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:44:20,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:44:20,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:44:20,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:44:20,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:44:20,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:44:20,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:44:20,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:44:20,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:44:20,120 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:44:20,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:44:20,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:44:20,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:44:20,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:44:20,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:44:20,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:44:20,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:44:20,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:44:20,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:44:20,122 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:44:20,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:44:20,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:44:20,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:44:20,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:44:20,123 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:44:20,123 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:44:20,123 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_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2022-11-25 17:44:20,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:44:20,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:44:20,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:44:20,466 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:44:20,467 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:44:20,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2022-11-25 17:44:23,662 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:44:23,952 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:44:23,953 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/sv-benchmarks/c/pthread-atomic/szymanski.i [2022-11-25 17:44:23,974 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/data/f8938a0e5/24120cea60ac44a08ec5e4eaccbf5e61/FLAG9230670e1 [2022-11-25 17:44:23,996 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/data/f8938a0e5/24120cea60ac44a08ec5e4eaccbf5e61 [2022-11-25 17:44:23,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:44:24,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:44:24,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:44:24,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:44:24,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:44:24,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:23" (1/1) ... [2022-11-25 17:44:24,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37574953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24, skipping insertion in model container [2022-11-25 17:44:24,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:23" (1/1) ... [2022-11-25 17:44:24,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:44:24,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:44:24,232 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:44:24,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,446 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,460 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,461 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,463 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_3b99d382-ea30-4040-9aef-d865ab7008f6/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-11-25 17:44:24,469 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,481 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,485 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,486 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,488 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,490 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,492 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,493 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_3b99d382-ea30-4040-9aef-d865ab7008f6/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-11-25 17:44:24,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,497 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:44:24,523 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:44:24,549 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 17:44:24,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,584 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,586 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,587 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,588 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,591 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,593 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,594 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,594 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_3b99d382-ea30-4040-9aef-d865ab7008f6/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-11-25 17:44:24,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,599 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,613 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,614 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,617 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,617 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,618 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,623 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,625 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_3b99d382-ea30-4040-9aef-d865ab7008f6/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-11-25 17:44:24,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,626 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:44:24,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:44:24,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:44:24,672 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:44:24,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24 WrapperNode [2022-11-25 17:44:24,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:44:24,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:44:24,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:44:24,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:44:24,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,712 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-11-25 17:44:24,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:44:24,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:44:24,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:44:24,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:44:24,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:44:24,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:44:24,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:44:24,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:44:24,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (1/1) ... [2022-11-25 17:44:24,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:44:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:24,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:44:24,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:44:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:44:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-25 17:44:24,829 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-25 17:44:24,829 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-25 17:44:24,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-25 17:44:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:44:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:44:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:44:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:44:24,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:44:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:44:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:44:24,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:44:24,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:44:24,833 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:44:25,007 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:44:25,010 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:44:25,319 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:44:25,327 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:44:25,328 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-25 17:44:25,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:25 BoogieIcfgContainer [2022-11-25 17:44:25,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:44:25,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:44:25,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:44:25,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:44:25,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:44:23" (1/3) ... [2022-11-25 17:44:25,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ba29f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:25, skipping insertion in model container [2022-11-25 17:44:25,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:24" (2/3) ... [2022-11-25 17:44:25,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ba29f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:25, skipping insertion in model container [2022-11-25 17:44:25,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:25" (3/3) ... [2022-11-25 17:44:25,342 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2022-11-25 17:44:25,353 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:44:25,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:44:25,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 17:44:25,372 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:44:25,453 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 17:44:25,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 117 transitions, 250 flow [2022-11-25 17:44:25,568 INFO L130 PetriNetUnfolder]: 20/115 cut-off events. [2022-11-25 17:44:25,569 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:44:25,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 115 events. 20/115 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2022-11-25 17:44:25,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 117 transitions, 250 flow [2022-11-25 17:44:25,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 105 transitions, 219 flow [2022-11-25 17:44:25,591 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:44:25,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 105 transitions, 219 flow [2022-11-25 17:44:25,615 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 105 transitions, 219 flow [2022-11-25 17:44:25,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 105 transitions, 219 flow [2022-11-25 17:44:25,670 INFO L130 PetriNetUnfolder]: 20/105 cut-off events. [2022-11-25 17:44:25,670 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:44:25,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 105 events. 20/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2022-11-25 17:44:25,676 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2022-11-25 17:44:28,480 INFO L134 LiptonReduction]: Checked pairs total: 6750 [2022-11-25 17:44:28,480 INFO L136 LiptonReduction]: Total number of compositions: 76 [2022-11-25 17:44:28,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:44:28,506 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;@4ad583c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:44:28,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-25 17:44:28,512 INFO L130 PetriNetUnfolder]: 5/26 cut-off events. [2022-11-25 17:44:28,513 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:44:28,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:28,514 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:28,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 17:44:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:28,520 INFO L85 PathProgramCache]: Analyzing trace with hash 971612218, now seen corresponding path program 1 times [2022-11-25 17:44:28,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:28,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276992813] [2022-11-25 17:44:28,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:28,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:28,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:28,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:28,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276992813] [2022-11-25 17:44:28,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276992813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:28,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:28,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:44:28,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956287182] [2022-11-25 17:44:28,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:28,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:44:28,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:44:28,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:44:28,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 193 [2022-11-25 17:44:28,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:28,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:28,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 193 [2022-11-25 17:44:28,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:29,221 INFO L130 PetriNetUnfolder]: 793/1235 cut-off events. [2022-11-25 17:44:29,221 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-25 17:44:29,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1235 events. 793/1235 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5290 event pairs, 209 based on Foata normal form. 22/791 useless extension candidates. Maximal degree in co-relation 2215. Up to 763 conditions per place. [2022-11-25 17:44:29,232 INFO L137 encePairwiseOnDemand]: 187/193 looper letters, 44 selfloop transitions, 5 changer transitions 2/61 dead transitions. [2022-11-25 17:44:29,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 236 flow [2022-11-25 17:44:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:44:29,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:44:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-11-25 17:44:29,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5975820379965457 [2022-11-25 17:44:29,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-11-25 17:44:29,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-11-25 17:44:29,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:29,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-11-25 17:44:29,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,266 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 95 flow. Second operand 3 states and 346 transitions. [2022-11-25 17:44:29,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 236 flow [2022-11-25 17:44:29,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 61 transitions, 229 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 17:44:29,273 INFO L231 Difference]: Finished difference. Result has 41 places, 45 transitions, 120 flow [2022-11-25 17:44:29,275 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=45} [2022-11-25 17:44:29,278 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-11-25 17:44:29,279 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 45 transitions, 120 flow [2022-11-25 17:44:29,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,279 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:29,279 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:29,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:44:29,280 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 17:44:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash -39889856, now seen corresponding path program 1 times [2022-11-25 17:44:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:29,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961968795] [2022-11-25 17:44:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:29,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:29,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961968795] [2022-11-25 17:44:29,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961968795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:29,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:29,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:44:29,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806583149] [2022-11-25 17:44:29,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:29,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:44:29,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:29,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:44:29,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:44:29,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 193 [2022-11-25 17:44:29,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:29,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 193 [2022-11-25 17:44:29,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:29,627 INFO L130 PetriNetUnfolder]: 737/1151 cut-off events. [2022-11-25 17:44:29,628 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-11-25 17:44:29,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 1151 events. 737/1151 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4847 event pairs, 212 based on Foata normal form. 28/807 useless extension candidates. Maximal degree in co-relation 1432. Up to 761 conditions per place. [2022-11-25 17:44:29,637 INFO L137 encePairwiseOnDemand]: 188/193 looper letters, 39 selfloop transitions, 4 changer transitions 7/60 dead transitions. [2022-11-25 17:44:29,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 251 flow [2022-11-25 17:44:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:44:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:44:29,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2022-11-25 17:44:29,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5958549222797928 [2022-11-25 17:44:29,649 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2022-11-25 17:44:29,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2022-11-25 17:44:29,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:29,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2022-11-25 17:44:29,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,658 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 120 flow. Second operand 3 states and 345 transitions. [2022-11-25 17:44:29,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 251 flow [2022-11-25 17:44:29,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:44:29,663 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2022-11-25 17:44:29,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2022-11-25 17:44:29,664 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2022-11-25 17:44:29,664 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2022-11-25 17:44:29,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,665 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:29,665 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:29,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:44:29,666 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 17:44:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:29,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1920381838, now seen corresponding path program 1 times [2022-11-25 17:44:29,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:29,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920684330] [2022-11-25 17:44:29,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:29,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:29,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920684330] [2022-11-25 17:44:29,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920684330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:29,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:29,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:44:29,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117479930] [2022-11-25 17:44:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:44:29,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:29,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:44:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:44:29,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 193 [2022-11-25 17:44:29,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:29,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:29,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 193 [2022-11-25 17:44:29,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:30,193 INFO L130 PetriNetUnfolder]: 708/1090 cut-off events. [2022-11-25 17:44:30,193 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2022-11-25 17:44:30,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2380 conditions, 1090 events. 708/1090 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4383 event pairs, 224 based on Foata normal form. 6/821 useless extension candidates. Maximal degree in co-relation 1403. Up to 559 conditions per place. [2022-11-25 17:44:30,199 INFO L137 encePairwiseOnDemand]: 176/193 looper letters, 44 selfloop transitions, 6 changer transitions 36/91 dead transitions. [2022-11-25 17:44:30,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 91 transitions, 415 flow [2022-11-25 17:44:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 501 transitions. [2022-11-25 17:44:30,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5191709844559586 [2022-11-25 17:44:30,203 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 501 transitions. [2022-11-25 17:44:30,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 501 transitions. [2022-11-25 17:44:30,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:30,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 501 transitions. [2022-11-25 17:44:30,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,211 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 5 states and 501 transitions. [2022-11-25 17:44:30,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 91 transitions, 415 flow [2022-11-25 17:44:30,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 91 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:30,216 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 161 flow [2022-11-25 17:44:30,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2022-11-25 17:44:30,217 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2022-11-25 17:44:30,217 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 161 flow [2022-11-25 17:44:30,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:30,219 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:30,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:44:30,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 17:44:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash -950500622, now seen corresponding path program 2 times [2022-11-25 17:44:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:30,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548899686] [2022-11-25 17:44:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:30,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:30,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:30,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548899686] [2022-11-25 17:44:30,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548899686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:30,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:30,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:44:30,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459905382] [2022-11-25 17:44:30,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:30,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:44:30,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:30,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:44:30,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:44:30,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 193 [2022-11-25 17:44:30,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:30,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 193 [2022-11-25 17:44:30,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:30,722 INFO L130 PetriNetUnfolder]: 572/947 cut-off events. [2022-11-25 17:44:30,722 INFO L131 PetriNetUnfolder]: For 511/513 co-relation queries the response was YES. [2022-11-25 17:44:30,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 947 events. 572/947 cut-off events. For 511/513 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4029 event pairs, 151 based on Foata normal form. 26/887 useless extension candidates. Maximal degree in co-relation 1695. Up to 377 conditions per place. [2022-11-25 17:44:30,729 INFO L137 encePairwiseOnDemand]: 176/193 looper letters, 56 selfloop transitions, 21 changer transitions 8/90 dead transitions. [2022-11-25 17:44:30,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 90 transitions, 515 flow [2022-11-25 17:44:30,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 504 transitions. [2022-11-25 17:44:30,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522279792746114 [2022-11-25 17:44:30,733 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 504 transitions. [2022-11-25 17:44:30,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 504 transitions. [2022-11-25 17:44:30,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:30,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 504 transitions. [2022-11-25 17:44:30,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,747 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,748 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 161 flow. Second operand 5 states and 504 transitions. [2022-11-25 17:44:30,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 90 transitions, 515 flow [2022-11-25 17:44:30,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 90 transitions, 490 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-25 17:44:30,761 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 345 flow [2022-11-25 17:44:30,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=345, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2022-11-25 17:44:30,765 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2022-11-25 17:44:30,766 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 345 flow [2022-11-25 17:44:30,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:30,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:30,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:44:30,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 17:44:30,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash -916646512, now seen corresponding path program 3 times [2022-11-25 17:44:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:30,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493903307] [2022-11-25 17:44:30,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:30,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:30,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:30,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:30,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493903307] [2022-11-25 17:44:30,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493903307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:30,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:30,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:44:30,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347096338] [2022-11-25 17:44:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:30,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:44:30,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:30,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:44:30,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:44:30,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 193 [2022-11-25 17:44:30,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:30,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:30,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 193 [2022-11-25 17:44:30,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:31,343 INFO L130 PetriNetUnfolder]: 722/1242 cut-off events. [2022-11-25 17:44:31,344 INFO L131 PetriNetUnfolder]: For 1926/1928 co-relation queries the response was YES. [2022-11-25 17:44:31,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 1242 events. 722/1242 cut-off events. For 1926/1928 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6106 event pairs, 232 based on Foata normal form. 36/1216 useless extension candidates. Maximal degree in co-relation 2906. Up to 700 conditions per place. [2022-11-25 17:44:31,353 INFO L137 encePairwiseOnDemand]: 180/193 looper letters, 84 selfloop transitions, 21 changer transitions 2/112 dead transitions. [2022-11-25 17:44:31,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 112 transitions, 868 flow [2022-11-25 17:44:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-11-25 17:44:31,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5212435233160622 [2022-11-25 17:44:31,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-11-25 17:44:31,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-11-25 17:44:31,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:31,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-11-25 17:44:31,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,365 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 345 flow. Second operand 5 states and 503 transitions. [2022-11-25 17:44:31,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 112 transitions, 868 flow [2022-11-25 17:44:31,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 112 transitions, 858 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-25 17:44:31,388 INFO L231 Difference]: Finished difference. Result has 63 places, 77 transitions, 591 flow [2022-11-25 17:44:31,388 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=591, PETRI_PLACES=63, PETRI_TRANSITIONS=77} [2022-11-25 17:44:31,393 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2022-11-25 17:44:31,393 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 77 transitions, 591 flow [2022-11-25 17:44:31,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,394 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:44:31,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:31,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:44:31,395 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-25 17:44:31,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:31,396 INFO L85 PathProgramCache]: Analyzing trace with hash 31646672, now seen corresponding path program 4 times [2022-11-25 17:44:31,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:31,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588630540] [2022-11-25 17:44:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:31,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:44:31,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:31,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588630540] [2022-11-25 17:44:31,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588630540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:31,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:31,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:44:31,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344419953] [2022-11-25 17:44:31,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:44:31,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:31,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:44:31,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:44:31,572 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 193 [2022-11-25 17:44:31,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 77 transitions, 591 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:44:31,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 193 [2022-11-25 17:44:31,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:44:31,880 INFO L130 PetriNetUnfolder]: 713/1202 cut-off events. [2022-11-25 17:44:31,880 INFO L131 PetriNetUnfolder]: For 3106/3170 co-relation queries the response was YES. [2022-11-25 17:44:31,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4339 conditions, 1202 events. 713/1202 cut-off events. For 3106/3170 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5504 event pairs, 210 based on Foata normal form. 76/1224 useless extension candidates. Maximal degree in co-relation 3586. Up to 640 conditions per place. [2022-11-25 17:44:31,886 INFO L137 encePairwiseOnDemand]: 178/193 looper letters, 0 selfloop transitions, 0 changer transitions 108/108 dead transitions. [2022-11-25 17:44:31,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 108 transitions, 927 flow [2022-11-25 17:44:31,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:44:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:44:31,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2022-11-25 17:44:31,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49844559585492226 [2022-11-25 17:44:31,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2022-11-25 17:44:31,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2022-11-25 17:44:31,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:44:31,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2022-11-25 17:44:31,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 193.0) internal successors, (1158), 6 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,922 INFO L175 Difference]: Start difference. First operand has 63 places, 77 transitions, 591 flow. Second operand 5 states and 481 transitions. [2022-11-25 17:44:31,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 108 transitions, 927 flow [2022-11-25 17:44:31,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 886 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-11-25 17:44:31,940 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2022-11-25 17:44:31,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2022-11-25 17:44:31,941 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2022-11-25 17:44:31,942 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2022-11-25 17:44:31,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:44:31,945 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-25 17:44:31,946 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-25 17:44:31,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-25 17:44:31,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-25 17:44:31,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-25 17:44:31,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-25 17:44:31,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:44:31,949 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2022-11-25 17:44:31,956 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:44:31,956 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:44:31,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:44:31 BasicIcfg [2022-11-25 17:44:31,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:44:31,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:44:31,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:44:31,963 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:44:31,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:25" (3/4) ... [2022-11-25 17:44:31,967 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:44:31,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-25 17:44:31,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-25 17:44:31,981 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-25 17:44:31,981 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:44:31,981 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:44:31,982 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:44:32,019 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:44:32,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:44:32,021 INFO L158 Benchmark]: Toolchain (without parser) took 8020.78ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 107.1MB in the beginning and 129.5MB in the end (delta: -22.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-11-25 17:44:32,021 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:44:32,022 INFO L158 Benchmark]: CACSL2BoogieTranslator took 672.23ms. Allocated memory is still 144.7MB. Free memory was 106.5MB in the beginning and 80.0MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-25 17:44:32,022 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.82ms. Allocated memory is still 144.7MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:44:32,023 INFO L158 Benchmark]: Boogie Preprocessor took 38.01ms. Allocated memory is still 144.7MB. Free memory was 77.9MB in the beginning and 76.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:44:32,023 INFO L158 Benchmark]: RCFGBuilder took 579.57ms. Allocated memory is still 144.7MB. Free memory was 76.5MB in the beginning and 108.6MB in the end (delta: -32.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:44:32,024 INFO L158 Benchmark]: TraceAbstraction took 6627.91ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 108.3MB in the beginning and 131.6MB in the end (delta: -23.3MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. [2022-11-25 17:44:32,025 INFO L158 Benchmark]: Witness Printer took 57.63ms. Allocated memory is still 174.1MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:44:32,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 111.1MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 672.23ms. Allocated memory is still 144.7MB. Free memory was 106.5MB in the beginning and 80.0MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.82ms. Allocated memory is still 144.7MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.01ms. Allocated memory is still 144.7MB. Free memory was 77.9MB in the beginning and 76.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 579.57ms. Allocated memory is still 144.7MB. Free memory was 76.5MB in the beginning and 108.6MB in the end (delta: -32.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6627.91ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 108.3MB in the beginning and 131.6MB in the end (delta: -23.3MB). Peak memory consumption was 101.5MB. Max. memory is 16.1GB. * Witness Printer took 57.63ms. Allocated memory is still 174.1MB. Free memory was 131.6MB in the beginning and 129.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 92 PlacesBefore, 40 PlacesAfterwards, 105 TransitionsBefore, 43 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 10 ChoiceCompositions, 76 TotalNumberOfCompositions, 6750 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3290, independent: 3096, independent conditional: 0, independent unconditional: 3096, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2163, independent: 2120, independent conditional: 0, independent unconditional: 2120, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2163, independent: 2116, independent conditional: 0, independent unconditional: 2116, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 107, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3290, independent: 976, independent conditional: 0, independent unconditional: 976, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 2163, unknown conditional: 0, unknown unconditional: 2163] , Statistics on independence cache: Total cache size (in pairs): 200, Positive cache size: 168, Positive conditional cache size: 0, Positive unconditional cache size: 168, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 802]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 745]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 154 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 415 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 893 IncrementalHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 60 mSDtfsCounter, 893 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=591occurred in iteration=5, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:44:32,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b99d382-ea30-4040-9aef-d865ab7008f6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE