./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 17:54:53,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:54:53,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:54:53,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:54:53,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:54:53,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:54:53,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:54:53,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:54:53,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:54:53,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:54:53,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:54:53,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:54:53,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:54:53,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:54:53,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:54:53,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:54:53,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:54:53,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:54:53,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:54:53,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:54:53,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:54:53,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:54:53,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:54:53,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:54:53,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:54:53,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:54:53,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:54:53,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:54:53,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:54:53,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:54:53,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:54:53,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:54:53,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:54:53,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:54:53,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:54:53,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:54:53,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:54:53,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:54:53,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:54:53,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:54:53,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:54:53,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:54:53,089 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:54:53,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:54:53,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:54:53,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:54:53,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:54:53,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:54:53,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:54:53,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:54:53,092 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:54:53,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:54:53,092 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:54:53,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:54:53,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:54:53,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:54:53,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:54:53,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:54:53,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:54:53,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:54:53,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:54:53,095 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:54:53,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:54:53,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:54:53,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:54:53,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:54:53,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:54:53,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:54:53,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:54:53,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:54:53,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:54:53,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:54:53,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:54:53,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:54:53,098 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:54:53,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:54:53,098 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_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2022-11-25 17:54:53,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:54:53,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:54:53,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:54:53,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:54:53,459 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:54:53,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-25 17:54:56,423 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:54:56,672 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:54:56,672 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2022-11-25 17:54:56,680 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/data/0834ce516/779e521af02d41c0a190536d052f82a7/FLAG14e09ab3a [2022-11-25 17:54:56,695 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/data/0834ce516/779e521af02d41c0a190536d052f82a7 [2022-11-25 17:54:56,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:54:56,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:54:56,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:54:56,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:54:56,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:54:56,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:56" (1/1) ... [2022-11-25 17:54:56,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7128af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:56, skipping insertion in model container [2022-11-25 17:54:56,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:54:56" (1/1) ... [2022-11-25 17:54:56,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:54:56,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:54:56,939 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,942 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,942 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,946 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,947 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,949 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,950 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,951 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,952 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,953 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,953 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,953 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,954 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,955 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,956 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,957 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,958 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,959 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,960 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,961 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,962 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,963 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:56,965 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:56,977 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_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-25 17:54:56,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:54:56,992 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:54:57,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,013 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,014 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,016 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,018 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,025 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:54:57,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:54:57,035 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_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2022-11-25 17:54:57,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:54:57,061 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:54:57,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57 WrapperNode [2022-11-25 17:54:57,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:54:57,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:54:57,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:54:57,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:54:57,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,113 INFO L138 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2022-11-25 17:54:57,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:54:57,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:54:57,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:54:57,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:54:57,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:54:57,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:54:57,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:54:57,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:54:57,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (1/1) ... [2022-11-25 17:54:57,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:54:57,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:54:57,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:54:57,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f463d9e1-5cd9-44cc-8d16-f7b0d5162c17/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:54:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:54:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:54:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:54:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:54:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:54:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:54:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:54:57,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:54:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:54:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:54:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-25 17:54:57,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-25 17:54:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:54:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-25 17:54:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-25 17:54:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-11-25 17:54:57,252 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-11-25 17:54:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:54:57,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:54:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:54:57,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:54:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:54:57,255 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:54:57,379 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:54:57,382 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:54:57,875 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:54:57,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:54:57,990 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:54:57,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:54:57 BoogieIcfgContainer [2022-11-25 17:54:57,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:54:57,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:54:57,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:54:57,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:54:57,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:54:56" (1/3) ... [2022-11-25 17:54:57,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652dddc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:54:57, skipping insertion in model container [2022-11-25 17:54:57,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:54:57" (2/3) ... [2022-11-25 17:54:57,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652dddc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:54:57, skipping insertion in model container [2022-11-25 17:54:58,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:54:57" (3/3) ... [2022-11-25 17:54:58,001 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2022-11-25 17:54:58,010 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:54:58,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:54:58,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:54:58,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:54:58,140 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2022-11-25 17:54:58,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2022-11-25 17:54:58,303 INFO L130 PetriNetUnfolder]: 2/182 cut-off events. [2022-11-25 17:54:58,304 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:54:58,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-11-25 17:54:58,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 188 transitions, 424 flow [2022-11-25 17:54:58,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 165 transitions, 366 flow [2022-11-25 17:54:58,318 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:54:58,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 165 transitions, 366 flow [2022-11-25 17:54:58,336 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 165 transitions, 366 flow [2022-11-25 17:54:58,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 165 transitions, 366 flow [2022-11-25 17:54:58,434 INFO L130 PetriNetUnfolder]: 2/165 cut-off events. [2022-11-25 17:54:58,458 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:54:58,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 165 events. 2/165 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2022-11-25 17:54:58,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 3042 [2022-11-25 17:55:11,876 INFO L134 LiptonReduction]: Checked pairs total: 7286 [2022-11-25 17:55:11,877 INFO L136 LiptonReduction]: Total number of compositions: 136 [2022-11-25 17:55:11,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:55:11,901 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;@3e94d6b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:55:11,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-25 17:55:11,913 INFO L130 PetriNetUnfolder]: 0/37 cut-off events. [2022-11-25 17:55:11,913 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-25 17:55:11,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:11,915 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:11,915 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 4 more)] === [2022-11-25 17:55:11,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:11,921 INFO L85 PathProgramCache]: Analyzing trace with hash -406671392, now seen corresponding path program 1 times [2022-11-25 17:55:11,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:11,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270890963] [2022-11-25 17:55:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:14,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270890963] [2022-11-25 17:55:14,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270890963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:14,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:14,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:55:14,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119668361] [2022-11-25 17:55:14,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:14,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:55:14,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:14,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:55:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:55:14,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 324 [2022-11-25 17:55:14,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 112 flow. Second operand has 8 states, 8 states have (on average 148.75) internal successors, (1190), 8 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:14,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:14,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 324 [2022-11-25 17:55:14,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:18,761 INFO L130 PetriNetUnfolder]: 17545/23053 cut-off events. [2022-11-25 17:55:18,762 INFO L131 PetriNetUnfolder]: For 2114/2114 co-relation queries the response was YES. [2022-11-25 17:55:18,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48140 conditions, 23053 events. 17545/23053 cut-off events. For 2114/2114 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 109660 event pairs, 3257 based on Foata normal form. 1/23054 useless extension candidates. Maximal degree in co-relation 36536. Up to 10858 conditions per place. [2022-11-25 17:55:18,964 INFO L137 encePairwiseOnDemand]: 315/324 looper letters, 100 selfloop transitions, 18 changer transitions 15/133 dead transitions. [2022-11-25 17:55:18,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 133 transitions, 640 flow [2022-11-25 17:55:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:55:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:55:18,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 998 transitions. [2022-11-25 17:55:18,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5133744855967078 [2022-11-25 17:55:18,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 998 transitions. [2022-11-25 17:55:18,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 998 transitions. [2022-11-25 17:55:19,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:19,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 998 transitions. [2022-11-25 17:55:19,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 166.33333333333334) internal successors, (998), 6 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,032 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 112 flow. Second operand 6 states and 998 transitions. [2022-11-25 17:55:19,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 133 transitions, 640 flow [2022-11-25 17:55:19,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 133 transitions, 568 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-11-25 17:55:19,140 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 210 flow [2022-11-25 17:55:19,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2022-11-25 17:55:19,148 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2022-11-25 17:55:19,148 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 210 flow [2022-11-25 17:55:19,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 148.75) internal successors, (1190), 8 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:19,150 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:19,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:55:19,151 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 4 more)] === [2022-11-25 17:55:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -347813616, now seen corresponding path program 2 times [2022-11-25 17:55:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:19,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161616959] [2022-11-25 17:55:19,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:19,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:19,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:19,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161616959] [2022-11-25 17:55:19,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161616959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:19,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:19,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:55:19,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826760095] [2022-11-25 17:55:19,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:19,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:55:19,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:55:19,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:55:19,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 324 [2022-11-25 17:55:19,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:19,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:19,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 324 [2022-11-25 17:55:19,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:22,905 INFO L130 PetriNetUnfolder]: 13584/17865 cut-off events. [2022-11-25 17:55:22,906 INFO L131 PetriNetUnfolder]: For 6547/6547 co-relation queries the response was YES. [2022-11-25 17:55:22,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46552 conditions, 17865 events. 13584/17865 cut-off events. For 6547/6547 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 82319 event pairs, 3144 based on Foata normal form. 124/17989 useless extension candidates. Maximal degree in co-relation 24803. Up to 17011 conditions per place. [2022-11-25 17:55:23,033 INFO L137 encePairwiseOnDemand]: 312/324 looper letters, 97 selfloop transitions, 24 changer transitions 0/121 dead transitions. [2022-11-25 17:55:23,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 121 transitions, 643 flow [2022-11-25 17:55:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:55:23,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:55:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-25 17:55:23,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2022-11-25 17:55:23,049 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-25 17:55:23,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-25 17:55:23,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:23,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-25 17:55:23,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,059 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 210 flow. Second operand 5 states and 828 transitions. [2022-11-25 17:55:23,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 121 transitions, 643 flow [2022-11-25 17:55:23,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 121 transitions, 627 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 17:55:23,106 INFO L231 Difference]: Finished difference. Result has 58 places, 82 transitions, 384 flow [2022-11-25 17:55:23,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=58, PETRI_TRANSITIONS=82} [2022-11-25 17:55:23,111 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2022-11-25 17:55:23,111 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 82 transitions, 384 flow [2022-11-25 17:55:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:23,113 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:23,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:55:23,114 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 4 more)] === [2022-11-25 17:55:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:23,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1965097968, now seen corresponding path program 3 times [2022-11-25 17:55:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:23,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683478041] [2022-11-25 17:55:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:23,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:23,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683478041] [2022-11-25 17:55:23,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683478041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:23,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:23,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:55:23,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141579516] [2022-11-25 17:55:23,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:23,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:55:23,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:23,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:55:23,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:55:23,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 324 [2022-11-25 17:55:23,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 82 transitions, 384 flow. Second operand has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 12 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:23,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:23,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 324 [2022-11-25 17:55:23,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:29,821 INFO L130 PetriNetUnfolder]: 25172/33325 cut-off events. [2022-11-25 17:55:29,821 INFO L131 PetriNetUnfolder]: For 22617/22617 co-relation queries the response was YES. [2022-11-25 17:55:29,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101271 conditions, 33325 events. 25172/33325 cut-off events. For 22617/22617 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 171813 event pairs, 5428 based on Foata normal form. 404/33729 useless extension candidates. Maximal degree in co-relation 57319. Up to 14338 conditions per place. [2022-11-25 17:55:30,046 INFO L137 encePairwiseOnDemand]: 311/324 looper letters, 236 selfloop transitions, 372 changer transitions 0/608 dead transitions. [2022-11-25 17:55:30,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 608 transitions, 3979 flow [2022-11-25 17:55:30,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 17:55:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-25 17:55:30,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3759 transitions. [2022-11-25 17:55:30,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5044283413848631 [2022-11-25 17:55:30,059 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3759 transitions. [2022-11-25 17:55:30,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3759 transitions. [2022-11-25 17:55:30,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:30,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3759 transitions. [2022-11-25 17:55:30,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 163.43478260869566) internal successors, (3759), 23 states have internal predecessors, (3759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:30,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 324.0) internal successors, (7776), 24 states have internal predecessors, (7776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:30,094 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 324.0) internal successors, (7776), 24 states have internal predecessors, (7776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:30,094 INFO L175 Difference]: Start difference. First operand has 58 places, 82 transitions, 384 flow. Second operand 23 states and 3759 transitions. [2022-11-25 17:55:30,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 608 transitions, 3979 flow [2022-11-25 17:55:30,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 608 transitions, 3979 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:55:30,346 INFO L231 Difference]: Finished difference. Result has 80 places, 447 transitions, 3148 flow [2022-11-25 17:55:30,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3148, PETRI_PLACES=80, PETRI_TRANSITIONS=447} [2022-11-25 17:55:30,349 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2022-11-25 17:55:30,349 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 447 transitions, 3148 flow [2022-11-25 17:55:30,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 150.16666666666666) internal successors, (1802), 12 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:30,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:30,351 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:55:30,352 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 4 more)] === [2022-11-25 17:55:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:30,354 INFO L85 PathProgramCache]: Analyzing trace with hash 482717520, now seen corresponding path program 4 times [2022-11-25 17:55:30,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:30,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085916132] [2022-11-25 17:55:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:30,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:31,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085916132] [2022-11-25 17:55:31,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085916132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:31,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:31,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:55:31,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23233612] [2022-11-25 17:55:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:31,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:55:31,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:55:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:55:31,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 324 [2022-11-25 17:55:31,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 447 transitions, 3148 flow. Second operand has 10 states, 10 states have (on average 150.8) internal successors, (1508), 10 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:31,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:31,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 324 [2022-11-25 17:55:31,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:39,929 INFO L130 PetriNetUnfolder]: 34780/46751 cut-off events. [2022-11-25 17:55:39,930 INFO L131 PetriNetUnfolder]: For 45726/45726 co-relation queries the response was YES. [2022-11-25 17:55:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176802 conditions, 46751 events. 34780/46751 cut-off events. For 45726/45726 co-relation queries the response was YES. Maximal size of possible extension queue 1706. Compared 262362 event pairs, 6074 based on Foata normal form. 1478/48229 useless extension candidates. Maximal degree in co-relation 93052. Up to 21674 conditions per place. [2022-11-25 17:55:40,289 INFO L137 encePairwiseOnDemand]: 311/324 looper letters, 374 selfloop transitions, 588 changer transitions 0/962 dead transitions. [2022-11-25 17:55:40,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 962 transitions, 7958 flow [2022-11-25 17:55:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:55:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 17:55:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2661 transitions. [2022-11-25 17:55:40,300 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5133101851851852 [2022-11-25 17:55:40,301 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2661 transitions. [2022-11-25 17:55:40,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2661 transitions. [2022-11-25 17:55:40,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:40,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2661 transitions. [2022-11-25 17:55:40,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 166.3125) internal successors, (2661), 16 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:40,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 324.0) internal successors, (5508), 17 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:40,329 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 324.0) internal successors, (5508), 17 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:40,329 INFO L175 Difference]: Start difference. First operand has 80 places, 447 transitions, 3148 flow. Second operand 16 states and 2661 transitions. [2022-11-25 17:55:40,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 962 transitions, 7958 flow [2022-11-25 17:55:41,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 962 transitions, 7084 flow, removed 333 selfloop flow, removed 4 redundant places. [2022-11-25 17:55:41,606 INFO L231 Difference]: Finished difference. Result has 94 places, 744 transitions, 6143 flow [2022-11-25 17:55:41,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6143, PETRI_PLACES=94, PETRI_TRANSITIONS=744} [2022-11-25 17:55:41,608 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, 37 predicate places. [2022-11-25 17:55:41,608 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 744 transitions, 6143 flow [2022-11-25 17:55:41,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 150.8) internal successors, (1508), 10 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:41,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:41,610 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:41,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:55:41,611 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 4 more)] === [2022-11-25 17:55:41,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash 527750038, now seen corresponding path program 5 times [2022-11-25 17:55:41,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:41,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262989850] [2022-11-25 17:55:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:42,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:42,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262989850] [2022-11-25 17:55:42,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262989850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:42,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:42,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:55:42,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53332614] [2022-11-25 17:55:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:42,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:55:42,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:42,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:55:42,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:55:42,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 324 [2022-11-25 17:55:42,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 744 transitions, 6143 flow. Second operand has 8 states, 8 states have (on average 151.75) internal successors, (1214), 8 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:42,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:42,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 324 [2022-11-25 17:55:42,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:55:53,547 INFO L130 PetriNetUnfolder]: 48492/65493 cut-off events. [2022-11-25 17:55:53,547 INFO L131 PetriNetUnfolder]: For 90675/90675 co-relation queries the response was YES. [2022-11-25 17:55:53,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281092 conditions, 65493 events. 48492/65493 cut-off events. For 90675/90675 co-relation queries the response was YES. Maximal size of possible extension queue 2640. Compared 390897 event pairs, 6192 based on Foata normal form. 552/66045 useless extension candidates. Maximal degree in co-relation 193988. Up to 22710 conditions per place. [2022-11-25 17:55:54,129 INFO L137 encePairwiseOnDemand]: 311/324 looper letters, 293 selfloop transitions, 1008 changer transitions 0/1301 dead transitions. [2022-11-25 17:55:54,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 1301 transitions, 12895 flow [2022-11-25 17:55:54,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:55:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:55:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1835 transitions. [2022-11-25 17:55:54,136 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5148709315375982 [2022-11-25 17:55:54,137 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1835 transitions. [2022-11-25 17:55:54,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1835 transitions. [2022-11-25 17:55:54,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:55:54,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1835 transitions. [2022-11-25 17:55:54,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 166.8181818181818) internal successors, (1835), 11 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:54,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 324.0) internal successors, (3888), 12 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:54,152 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 324.0) internal successors, (3888), 12 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:54,152 INFO L175 Difference]: Start difference. First operand has 94 places, 744 transitions, 6143 flow. Second operand 11 states and 1835 transitions. [2022-11-25 17:55:54,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 1301 transitions, 12895 flow [2022-11-25 17:55:55,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 1301 transitions, 12610 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-11-25 17:55:55,303 INFO L231 Difference]: Finished difference. Result has 102 places, 1167 transitions, 12973 flow [2022-11-25 17:55:55,304 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=324, PETRI_DIFFERENCE_MINUEND_FLOW=5955, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=623, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12973, PETRI_PLACES=102, PETRI_TRANSITIONS=1167} [2022-11-25 17:55:55,305 INFO L288 CegarLoopForPetriNet]: 57 programPoint places, 45 predicate places. [2022-11-25 17:55:55,305 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 1167 transitions, 12973 flow [2022-11-25 17:55:55,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 151.75) internal successors, (1214), 8 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:55,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:55:55,306 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:55:55,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:55:55,307 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 4 more)] === [2022-11-25 17:55:55,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:55:55,308 INFO L85 PathProgramCache]: Analyzing trace with hash 416472778, now seen corresponding path program 6 times [2022-11-25 17:55:55,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:55:55,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559744588] [2022-11-25 17:55:55,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:55:55,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:55:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:55:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:55:55,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:55:55,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559744588] [2022-11-25 17:55:55,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559744588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:55:55,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:55:55,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:55:55,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773529444] [2022-11-25 17:55:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:55:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:55:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:55:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:55:55,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:55:55,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 324 [2022-11-25 17:55:55,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 1167 transitions, 12973 flow. Second operand has 8 states, 8 states have (on average 151.75) internal successors, (1214), 8 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:55:55,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:55:55,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 324 [2022-11-25 17:55:55,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:56:12,033 INFO L130 PetriNetUnfolder]: 50292/68033 cut-off events. [2022-11-25 17:56:12,034 INFO L131 PetriNetUnfolder]: For 160360/160360 co-relation queries the response was YES. [2022-11-25 17:56:12,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355671 conditions, 68033 events. 50292/68033 cut-off events. For 160360/160360 co-relation queries the response was YES. Maximal size of possible extension queue 2756. Compared 410363 event pairs, 6192 based on Foata normal form. 768/68801 useless extension candidates. Maximal degree in co-relation 241069. Up to 22710 conditions per place. [2022-11-25 17:56:12,606 INFO L137 encePairwiseOnDemand]: 311/324 looper letters, 297 selfloop transitions, 1241 changer transitions 0/1538 dead transitions. [2022-11-25 17:56:12,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 1538 transitions, 19243 flow [2022-11-25 17:56:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:56:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 17:56:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1839 transitions. [2022-11-25 17:56:12,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.515993265993266 [2022-11-25 17:56:12,615 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1839 transitions. [2022-11-25 17:56:12,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1839 transitions. [2022-11-25 17:56:12,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:56:12,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1839 transitions. [2022-11-25 17:56:12,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 167.1818181818182) internal successors, (1839), 11 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:12,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 324.0) internal successors, (3888), 12 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:12,634 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 324.0) internal successors, (3888), 12 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:56:12,634 INFO L175 Difference]: Start difference. First operand has 102 places, 1167 transitions, 12973 flow. Second operand 11 states and 1839 transitions. [2022-11-25 17:56:12,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 1538 transitions, 19243 flow