./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b87483e693fd72a28f6c7edd484e610e6e0dbb17679c8092f6f9c9cd35d4acca --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:57:49,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:57:49,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:57:49,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:57:49,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:57:49,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:57:49,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:57:49,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:57:49,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:57:49,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:57:49,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:57:49,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:57:49,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:57:49,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:57:49,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:57:49,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:57:49,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:57:49,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:57:49,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:57:49,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:57:49,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:57:49,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:57:49,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:57:49,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:57:49,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:57:49,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:57:49,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:57:49,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:57:49,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:57:49,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:57:49,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:57:49,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:57:49,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:57:49,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:57:49,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:57:49,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:57:49,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:57:49,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:57:49,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:57:49,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:57:49,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:57:49,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:57:49,727 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:57:49,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:57:49,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:57:49,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:57:49,729 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:57:49,729 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:57:49,729 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:57:49,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:57:49,729 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:57:49,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:57:49,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:57:49,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:57:49,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:57:49,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:57:49,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:57:49,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:57:49,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:57:49,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:57:49,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:57:49,732 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:57:49,733 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_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b87483e693fd72a28f6c7edd484e610e6e0dbb17679c8092f6f9c9cd35d4acca [2022-12-13 20:57:49,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:57:49,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:57:49,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:57:49,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:57:49,925 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:57:49,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/safe023_tso.i [2022-12-13 20:57:52,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:57:52,733 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:57:52,734 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/sv-benchmarks/c/pthread-wmm/safe023_tso.i [2022-12-13 20:57:52,743 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/data/a5041e62d/ee852af479bc4c3087a0db0ca09744aa/FLAGe112bc5ed [2022-12-13 20:57:52,756 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/data/a5041e62d/ee852af479bc4c3087a0db0ca09744aa [2022-12-13 20:57:52,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:57:52,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:57:52,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:57:52,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:57:52,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:57:52,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:57:52" (1/1) ... [2022-12-13 20:57:52,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d795a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:52, skipping insertion in model container [2022-12-13 20:57:52,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:57:52" (1/1) ... [2022-12-13 20:57:52,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:57:52,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:57:52,902 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_a5183de6-841f-4b4d-9225-552b9314deec/sv-benchmarks/c/pthread-wmm/safe023_tso.i[945,958] [2022-12-13 20:57:52,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,992 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,993 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,994 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,995 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,996 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:52,997 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:52,998 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:57:53,013 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:57:53,022 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_a5183de6-841f-4b4d-9225-552b9314deec/sv-benchmarks/c/pthread-wmm/safe023_tso.i[945,958] [2022-12-13 20:57:53,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,040 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 20:57:53,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 20:57:53,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:57:53,080 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:57:53,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53 WrapperNode [2022-12-13 20:57:53,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:57:53,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:57:53,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:57:53,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:57:53,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,128 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-13 20:57:53,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:57:53,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:57:53,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:57:53,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:57:53,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,147 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:57:53,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:57:53,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:57:53,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:57:53,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (1/1) ... [2022-12-13 20:57:53,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:57:53,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:57:53,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:57:53,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:57:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:57:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 20:57:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:57:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:57:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:57:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 20:57:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 20:57:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 20:57:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 20:57:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 20:57:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 20:57:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:57:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 20:57:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:57:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:57:53,220 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:57:53,317 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:57:53,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:57:53,464 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:57:53,470 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:57:53,470 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 20:57:53,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:57:53 BoogieIcfgContainer [2022-12-13 20:57:53,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:57:53,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:57:53,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:57:53,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:57:53,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:57:52" (1/3) ... [2022-12-13 20:57:53,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74575e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:57:53, skipping insertion in model container [2022-12-13 20:57:53,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:57:53" (2/3) ... [2022-12-13 20:57:53,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74575e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:57:53, skipping insertion in model container [2022-12-13 20:57:53,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:57:53" (3/3) ... [2022-12-13 20:57:53,479 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2022-12-13 20:57:53,486 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:57:53,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:57:53,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:57:53,495 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:57:53,540 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 20:57:53,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-12-13 20:57:53,600 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-12-13 20:57:53,600 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:57:53,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-12-13 20:57:53,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-12-13 20:57:53,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-12-13 20:57:53,609 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:57:53,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2022-12-13 20:57:53,619 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2022-12-13 20:57:53,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2022-12-13 20:57:53,633 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-12-13 20:57:53,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:57:53,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 36 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2022-12-13 20:57:53,635 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2022-12-13 20:57:55,070 INFO L134 LiptonReduction]: Checked pairs total: 2345 [2022-12-13 20:57:55,070 INFO L136 LiptonReduction]: Total number of compositions: 64 [2022-12-13 20:57:55,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:57:55,088 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;@708051f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:57:55,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 20:57:55,093 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2022-12-13 20:57:55,093 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:57:55,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:55,094 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:55,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:55,099 INFO L85 PathProgramCache]: Analyzing trace with hash -569792737, now seen corresponding path program 1 times [2022-12-13 20:57:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:55,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582596021] [2022-12-13 20:57:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:55,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:55,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:55,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582596021] [2022-12-13 20:57:55,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582596021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:55,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:55,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:57:55,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011907781] [2022-12-13 20:57:55,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:55,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:57:55,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:55,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:57:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:57:55,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-12-13 20:57:55,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:55,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-12-13 20:57:55,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:55,583 INFO L130 PetriNetUnfolder]: 424/734 cut-off events. [2022-12-13 20:57:55,583 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-12-13 20:57:55,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 734 events. 424/734 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3662 event pairs, 160 based on Foata normal form. 43/777 useless extension candidates. Maximal degree in co-relation 1476. Up to 392 conditions per place. [2022-12-13 20:57:55,588 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 21 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2022-12-13 20:57:55,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 122 flow [2022-12-13 20:57:55,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:57:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:57:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2022-12-13 20:57:55,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2022-12-13 20:57:55,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2022-12-13 20:57:55,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2022-12-13 20:57:55,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:55,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2022-12-13 20:57:55,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,608 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 261 transitions. [2022-12-13 20:57:55,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 122 flow [2022-12-13 20:57:55,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 20:57:55,612 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2022-12-13 20:57:55,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-12-13 20:57:55,616 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2022-12-13 20:57:55,616 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2022-12-13 20:57:55,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:55,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:55,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:57:55,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:55,617 INFO L85 PathProgramCache]: Analyzing trace with hash -483706604, now seen corresponding path program 1 times [2022-12-13 20:57:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:55,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828732177] [2022-12-13 20:57:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:55,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:55,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:55,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828732177] [2022-12-13 20:57:55,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828732177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:55,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:55,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:57:55,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697214204] [2022-12-13 20:57:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:55,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:57:55,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:57:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:57:55,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 156 [2022-12-13 20:57:55,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:55,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 156 [2022-12-13 20:57:55,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:55,787 INFO L130 PetriNetUnfolder]: 326/584 cut-off events. [2022-12-13 20:57:55,787 INFO L131 PetriNetUnfolder]: For 274/274 co-relation queries the response was YES. [2022-12-13 20:57:55,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 584 events. 326/584 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2863 event pairs, 111 based on Foata normal form. 8/573 useless extension candidates. Maximal degree in co-relation 1522. Up to 346 conditions per place. [2022-12-13 20:57:55,791 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2022-12-13 20:57:55,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 154 flow [2022-12-13 20:57:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:57:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:57:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-12-13 20:57:55,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2022-12-13 20:57:55,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-12-13 20:57:55,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-12-13 20:57:55,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:55,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-12-13 20:57:55,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,795 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 3 states and 272 transitions. [2022-12-13 20:57:55,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 154 flow [2022-12-13 20:57:55,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:57:55,797 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 85 flow [2022-12-13 20:57:55,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2022-12-13 20:57:55,798 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2022-12-13 20:57:55,798 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 85 flow [2022-12-13 20:57:55,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:55,798 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:55,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:57:55,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:55,799 INFO L85 PathProgramCache]: Analyzing trace with hash -483706170, now seen corresponding path program 1 times [2022-12-13 20:57:55,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:55,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791543633] [2022-12-13 20:57:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:55,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:55,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:55,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791543633] [2022-12-13 20:57:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791543633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:55,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:55,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:57:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266279056] [2022-12-13 20:57:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:57:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:57:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:57:55,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-12-13 20:57:55,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:55,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-12-13 20:57:55,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:55,982 INFO L130 PetriNetUnfolder]: 391/683 cut-off events. [2022-12-13 20:57:55,983 INFO L131 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2022-12-13 20:57:55,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 683 events. 391/683 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3351 event pairs, 51 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 1773. Up to 361 conditions per place. [2022-12-13 20:57:55,985 INFO L137 encePairwiseOnDemand]: 149/156 looper letters, 29 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2022-12-13 20:57:55,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 40 transitions, 220 flow [2022-12-13 20:57:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:57:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:57:55,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2022-12-13 20:57:55,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5544871794871795 [2022-12-13 20:57:55,987 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2022-12-13 20:57:55,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2022-12-13 20:57:55,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:55,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2022-12-13 20:57:55,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 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) [2022-12-13 20:57:55,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,991 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,991 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 85 flow. Second operand 4 states and 346 transitions. [2022-12-13 20:57:55,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 40 transitions, 220 flow [2022-12-13 20:57:55,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 20:57:55,992 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 154 flow [2022-12-13 20:57:55,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2022-12-13 20:57:55,993 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2022-12-13 20:57:55,993 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 154 flow [2022-12-13 20:57:55,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:55,993 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:55,993 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:55,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:57:55,994 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:55,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:55,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2109990850, now seen corresponding path program 1 times [2022-12-13 20:57:55,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:55,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531966796] [2022-12-13 20:57:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:56,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:56,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531966796] [2022-12-13 20:57:56,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531966796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:56,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:56,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:57:56,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137446912] [2022-12-13 20:57:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:56,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:57:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:56,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:57:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:57:56,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 156 [2022-12-13 20:57:56,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:56,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 156 [2022-12-13 20:57:56,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:56,152 INFO L130 PetriNetUnfolder]: 356/686 cut-off events. [2022-12-13 20:57:56,152 INFO L131 PetriNetUnfolder]: For 673/677 co-relation queries the response was YES. [2022-12-13 20:57:56,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 686 events. 356/686 cut-off events. For 673/677 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3901 event pairs, 141 based on Foata normal form. 13/694 useless extension candidates. Maximal degree in co-relation 2004. Up to 337 conditions per place. [2022-12-13 20:57:56,155 INFO L137 encePairwiseOnDemand]: 153/156 looper letters, 25 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2022-12-13 20:57:56,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 245 flow [2022-12-13 20:57:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:57:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:57:56,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2022-12-13 20:57:56,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5854700854700855 [2022-12-13 20:57:56,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2022-12-13 20:57:56,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2022-12-13 20:57:56,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:56,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2022-12-13 20:57:56,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,158 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 154 flow. Second operand 3 states and 274 transitions. [2022-12-13 20:57:56,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 245 flow [2022-12-13 20:57:56,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:57:56,162 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 174 flow [2022-12-13 20:57:56,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2022-12-13 20:57:56,162 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2022-12-13 20:57:56,162 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 174 flow [2022-12-13 20:57:56,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:56,163 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:56,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:57:56,163 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:56,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash 980792513, now seen corresponding path program 1 times [2022-12-13 20:57:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:56,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102716362] [2022-12-13 20:57:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:56,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:56,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102716362] [2022-12-13 20:57:56,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102716362] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:56,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:56,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:57:56,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023328799] [2022-12-13 20:57:56,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:56,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:57:56,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:56,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:57:56,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:57:56,259 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 156 [2022-12-13 20:57:56,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:56,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 156 [2022-12-13 20:57:56,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:56,392 INFO L130 PetriNetUnfolder]: 782/1278 cut-off events. [2022-12-13 20:57:56,392 INFO L131 PetriNetUnfolder]: For 2127/2127 co-relation queries the response was YES. [2022-12-13 20:57:56,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 1278 events. 782/1278 cut-off events. For 2127/2127 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6228 event pairs, 118 based on Foata normal form. 12/1290 useless extension candidates. Maximal degree in co-relation 4033. Up to 578 conditions per place. [2022-12-13 20:57:56,396 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 41 selfloop transitions, 14 changer transitions 5/60 dead transitions. [2022-12-13 20:57:56,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 456 flow [2022-12-13 20:57:56,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:57:56,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:57:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2022-12-13 20:57:56,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5435897435897435 [2022-12-13 20:57:56,398 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 424 transitions. [2022-12-13 20:57:56,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 424 transitions. [2022-12-13 20:57:56,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:56,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 424 transitions. [2022-12-13 20:57:56,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,400 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,400 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 174 flow. Second operand 5 states and 424 transitions. [2022-12-13 20:57:56,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 456 flow [2022-12-13 20:57:56,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 444 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 20:57:56,404 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 281 flow [2022-12-13 20:57:56,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=281, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2022-12-13 20:57:56,405 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-12-13 20:57:56,405 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 281 flow [2022-12-13 20:57:56,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:56,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:57:56,406 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2109990323, now seen corresponding path program 2 times [2022-12-13 20:57:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:56,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875636322] [2022-12-13 20:57:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:56,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:56,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875636322] [2022-12-13 20:57:56,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875636322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:56,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:56,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:57:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926613254] [2022-12-13 20:57:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:56,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:57:56,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:56,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:57:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:57:56,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 20:57:56,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:56,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 20:57:56,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:56,580 INFO L130 PetriNetUnfolder]: 556/1025 cut-off events. [2022-12-13 20:57:56,580 INFO L131 PetriNetUnfolder]: For 3066/3070 co-relation queries the response was YES. [2022-12-13 20:57:56,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 1025 events. 556/1025 cut-off events. For 3066/3070 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5980 event pairs, 130 based on Foata normal form. 38/1027 useless extension candidates. Maximal degree in co-relation 3464. Up to 411 conditions per place. [2022-12-13 20:57:56,583 INFO L137 encePairwiseOnDemand]: 152/156 looper letters, 22 selfloop transitions, 5 changer transitions 15/47 dead transitions. [2022-12-13 20:57:56,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 406 flow [2022-12-13 20:57:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:57:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:57:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2022-12-13 20:57:56,585 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5721153846153846 [2022-12-13 20:57:56,585 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2022-12-13 20:57:56,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2022-12-13 20:57:56,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:56,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2022-12-13 20:57:56,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,587 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,587 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 281 flow. Second operand 4 states and 357 transitions. [2022-12-13 20:57:56,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 406 flow [2022-12-13 20:57:56,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:57:56,592 INFO L231 Difference]: Finished difference. Result has 47 places, 25 transitions, 200 flow [2022-12-13 20:57:56,592 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=47, PETRI_TRANSITIONS=25} [2022-12-13 20:57:56,592 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2022-12-13 20:57:56,592 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 25 transitions, 200 flow [2022-12-13 20:57:56,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:56,593 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:56,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 20:57:56,593 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash 339753079, now seen corresponding path program 1 times [2022-12-13 20:57:56,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:56,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985864759] [2022-12-13 20:57:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:56,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:56,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:56,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:56,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985864759] [2022-12-13 20:57:56,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985864759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:56,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:56,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:57:56,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218365568] [2022-12-13 20:57:56,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:56,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:57:56,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:56,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:57:56,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:57:56,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 156 [2022-12-13 20:57:56,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 25 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:56,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 156 [2022-12-13 20:57:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:56,746 INFO L130 PetriNetUnfolder]: 303/535 cut-off events. [2022-12-13 20:57:56,746 INFO L131 PetriNetUnfolder]: For 1380/1380 co-relation queries the response was YES. [2022-12-13 20:57:56,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 535 events. 303/535 cut-off events. For 1380/1380 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2328 event pairs, 77 based on Foata normal form. 4/537 useless extension candidates. Maximal degree in co-relation 1905. Up to 272 conditions per place. [2022-12-13 20:57:56,748 INFO L137 encePairwiseOnDemand]: 150/156 looper letters, 24 selfloop transitions, 7 changer transitions 9/42 dead transitions. [2022-12-13 20:57:56,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 364 flow [2022-12-13 20:57:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:57:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:57:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2022-12-13 20:57:56,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5480769230769231 [2022-12-13 20:57:56,750 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2022-12-13 20:57:56,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2022-12-13 20:57:56,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:56,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2022-12-13 20:57:56,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,752 INFO L175 Difference]: Start difference. First operand has 47 places, 25 transitions, 200 flow. Second operand 4 states and 342 transitions. [2022-12-13 20:57:56,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 364 flow [2022-12-13 20:57:56,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 281 flow, removed 8 selfloop flow, removed 10 redundant places. [2022-12-13 20:57:56,754 INFO L231 Difference]: Finished difference. Result has 42 places, 22 transitions, 144 flow [2022-12-13 20:57:56,755 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=42, PETRI_TRANSITIONS=22} [2022-12-13 20:57:56,755 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-12-13 20:57:56,755 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 22 transitions, 144 flow [2022-12-13 20:57:56,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:56,755 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:56,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:57:56,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:56,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:56,756 INFO L85 PathProgramCache]: Analyzing trace with hash -321450723, now seen corresponding path program 1 times [2022-12-13 20:57:56,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:56,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073696040] [2022-12-13 20:57:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:56,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:56,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:56,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073696040] [2022-12-13 20:57:56,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073696040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:56,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:56,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:57:56,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337442248] [2022-12-13 20:57:56,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:56,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:57:56,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:57:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:57:56,819 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 20:57:56,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 22 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:56,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 20:57:56,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:56,853 INFO L130 PetriNetUnfolder]: 78/172 cut-off events. [2022-12-13 20:57:56,853 INFO L131 PetriNetUnfolder]: For 375/386 co-relation queries the response was YES. [2022-12-13 20:57:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 172 events. 78/172 cut-off events. For 375/386 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 613 event pairs, 19 based on Foata normal form. 9/175 useless extension candidates. Maximal degree in co-relation 541. Up to 128 conditions per place. [2022-12-13 20:57:56,854 INFO L137 encePairwiseOnDemand]: 151/156 looper letters, 22 selfloop transitions, 3 changer transitions 1/32 dead transitions. [2022-12-13 20:57:56,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 244 flow [2022-12-13 20:57:56,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:57:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:57:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2022-12-13 20:57:56,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2022-12-13 20:57:56,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2022-12-13 20:57:56,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2022-12-13 20:57:56,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:56,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2022-12-13 20:57:56,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,857 INFO L175 Difference]: Start difference. First operand has 42 places, 22 transitions, 144 flow. Second operand 3 states and 270 transitions. [2022-12-13 20:57:56,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 244 flow [2022-12-13 20:57:56,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 221 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-12-13 20:57:56,858 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 145 flow [2022-12-13 20:57:56,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2022-12-13 20:57:56,858 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2022-12-13 20:57:56,859 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 145 flow [2022-12-13 20:57:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,859 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:56,859 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:56,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:57:56,859 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1767532450, now seen corresponding path program 1 times [2022-12-13 20:57:56,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:56,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385771677] [2022-12-13 20:57:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:56,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:56,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:56,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385771677] [2022-12-13 20:57:56,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385771677] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:56,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:56,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:57:56,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638238442] [2022-12-13 20:57:56,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:56,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:57:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:57:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:57:56,933 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 20:57:56,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:56,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 20:57:56,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:56,977 INFO L130 PetriNetUnfolder]: 54/130 cut-off events. [2022-12-13 20:57:56,978 INFO L131 PetriNetUnfolder]: For 216/242 co-relation queries the response was YES. [2022-12-13 20:57:56,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 130 events. 54/130 cut-off events. For 216/242 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 438 event pairs, 9 based on Foata normal form. 23/147 useless extension candidates. Maximal degree in co-relation 475. Up to 57 conditions per place. [2022-12-13 20:57:56,979 INFO L137 encePairwiseOnDemand]: 151/156 looper letters, 24 selfloop transitions, 5 changer transitions 3/38 dead transitions. [2022-12-13 20:57:56,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 283 flow [2022-12-13 20:57:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:57:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:57:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2022-12-13 20:57:56,981 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5721153846153846 [2022-12-13 20:57:56,981 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2022-12-13 20:57:56,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2022-12-13 20:57:56,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:56,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2022-12-13 20:57:56,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,984 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 145 flow. Second operand 4 states and 357 transitions. [2022-12-13 20:57:56,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 283 flow [2022-12-13 20:57:56,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 274 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 20:57:56,986 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 154 flow [2022-12-13 20:57:56,986 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2022-12-13 20:57:56,987 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-12-13 20:57:56,987 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 154 flow [2022-12-13 20:57:56,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:56,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:57:56,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:56,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 20:57:56,988 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 20:57:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:57:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1240648655, now seen corresponding path program 1 times [2022-12-13 20:57:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:57:56,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059548062] [2022-12-13 20:57:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:57:56,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:57:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:57:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:57:57,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:57:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059548062] [2022-12-13 20:57:57,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059548062] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:57:57,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:57:57,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 20:57:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737921310] [2022-12-13 20:57:57,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:57:57,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 20:57:57,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:57:57,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 20:57:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 20:57:57,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 156 [2022-12-13 20:57:57,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:57,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:57:57,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 156 [2022-12-13 20:57:57,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:57:57,102 INFO L130 PetriNetUnfolder]: 47/112 cut-off events. [2022-12-13 20:57:57,102 INFO L131 PetriNetUnfolder]: For 323/351 co-relation queries the response was YES. [2022-12-13 20:57:57,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 112 events. 47/112 cut-off events. For 323/351 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 381 event pairs, 8 based on Foata normal form. 18/125 useless extension candidates. Maximal degree in co-relation 440. Up to 46 conditions per place. [2022-12-13 20:57:57,102 INFO L137 encePairwiseOnDemand]: 151/156 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2022-12-13 20:57:57,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 266 flow [2022-12-13 20:57:57,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 20:57:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 20:57:57,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2022-12-13 20:57:57,104 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5576923076923077 [2022-12-13 20:57:57,104 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2022-12-13 20:57:57,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2022-12-13 20:57:57,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:57:57,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2022-12-13 20:57:57,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:57,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:57,106 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:57,106 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 154 flow. Second operand 5 states and 435 transitions. [2022-12-13 20:57:57,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 266 flow [2022-12-13 20:57:57,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 249 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-13 20:57:57,107 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2022-12-13 20:57:57,107 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2022-12-13 20:57:57,107 INFO L288 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2022-12-13 20:57:57,107 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2022-12-13 20:57:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:57:57,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 20:57:57,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 20:57:57,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 20:57:57,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 20:57:57,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 20:57:57,110 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:57:57,113 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 20:57:57,113 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 20:57:57,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 08:57:57 BasicIcfg [2022-12-13 20:57:57,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 20:57:57,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 20:57:57,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 20:57:57,116 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 20:57:57,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:57:53" (3/4) ... [2022-12-13 20:57:57,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 20:57:57,123 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 20:57:57,123 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 20:57:57,123 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-12-13 20:57:57,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-12-13 20:57:57,126 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 20:57:57,126 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 20:57:57,126 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 20:57:57,147 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 20:57:57,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 20:57:57,147 INFO L158 Benchmark]: Toolchain (without parser) took 4389.28ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 72.4MB in the beginning and 38.9MB in the end (delta: 33.5MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2022-12-13 20:57:57,148 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:57:57,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.57ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 72.4MB in the beginning and 112.5MB in the end (delta: -40.0MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. [2022-12-13 20:57:57,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.91ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 114.0MB in the end (delta: -1.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-12-13 20:57:57,148 INFO L158 Benchmark]: Boogie Preprocessor took 21.88ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 112.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 20:57:57,148 INFO L158 Benchmark]: RCFGBuilder took 321.42ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 98.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 20:57:57,149 INFO L158 Benchmark]: TraceAbstraction took 3640.74ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 42.1MB in the end (delta: 56.5MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2022-12-13 20:57:57,149 INFO L158 Benchmark]: Witness Printer took 31.78ms. Allocated memory is still 142.6MB. Free memory was 42.1MB in the beginning and 38.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 20:57:57,150 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.57ms. Allocated memory was 115.3MB in the beginning and 142.6MB in the end (delta: 27.3MB). Free memory was 72.4MB in the beginning and 112.5MB in the end (delta: -40.0MB). Peak memory consumption was 30.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.91ms. Allocated memory is still 142.6MB. Free memory was 112.4MB in the beginning and 114.0MB in the end (delta: -1.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.88ms. Allocated memory is still 142.6MB. Free memory was 114.0MB in the beginning and 112.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 321.42ms. Allocated memory is still 142.6MB. Free memory was 112.7MB in the beginning and 98.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3640.74ms. Allocated memory is still 142.6MB. Free memory was 98.5MB in the beginning and 42.1MB in the end (delta: 56.5MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Witness Printer took 31.78ms. Allocated memory is still 142.6MB. Free memory was 42.1MB in the beginning and 38.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 18 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 2345 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1317, independent: 1221, independent conditional: 0, independent unconditional: 1221, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 617, independent: 588, independent conditional: 0, independent unconditional: 588, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1317, independent: 633, independent conditional: 0, independent unconditional: 633, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 617, unknown conditional: 0, unknown unconditional: 617] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 413 IncrementalHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 50 mSDtfsCounter, 413 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=281occurred in iteration=5, InterpolantAutomatonStates: 38, 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, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 20:57:57,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5183de6-841f-4b4d-9225-552b9314deec/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE