./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/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_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/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_9b4878d5-78be-4809-91a6-a9f4aefc070f/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 dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c --- 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 13:58:10,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:58:10,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:58:10,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:58:10,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:58:10,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:58:10,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:58:10,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:58:10,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:58:10,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:58:10,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:58:10,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:58:10,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:58:10,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:58:10,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:58:10,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:58:10,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:58:10,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:58:10,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:58:10,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:58:10,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:58:10,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:58:10,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:58:10,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:58:10,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:58:10,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:58:10,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:58:10,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:58:10,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:58:10,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:58:10,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:58:10,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:58:10,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:58:10,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:58:10,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:58:10,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:58:10,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:58:10,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:58:10,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:58:10,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:58:10,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:58:10,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:58:10,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:58:10,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:58:10,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:58:10,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:58:11,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:58:11,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:58:11,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:58:11,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:58:11,001 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:58:11,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:58:11,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:58:11,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:58:11,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:58:11,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:58:11,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:58:11,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:58:11,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:58:11,007 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:58:11,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:58:11,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:58:11,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:58:11,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:58:11,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:58:11,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:58:11,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:58:11,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:58:11,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:58:11,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:58:11,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:58:11,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:58:11,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:58:11,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:58:11,010 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:58:11,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:58:11,011 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:58:11,011 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_9b4878d5-78be-4809-91a6-a9f4aefc070f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda4e60b50ccb96ce521fa11aa956967863397082d82b1fb589f74967fe28a7c [2022-12-13 13:58:11,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:58:11,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:58:11,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:58:11,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:58:11,232 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:58:11,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-12-13 13:58:13,819 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:58:13,960 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:58:13,961 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2022-12-13 13:58:13,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/data/4587782b6/be13b1a9193b46bcaf1e53991bbd6c47/FLAG9039483f4 [2022-12-13 13:58:13,978 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/data/4587782b6/be13b1a9193b46bcaf1e53991bbd6c47 [2022-12-13 13:58:13,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:58:13,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:58:13,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:58:13,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:58:13,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:58:13,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:58:13" (1/1) ... [2022-12-13 13:58:13,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694a69e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:13, skipping insertion in model container [2022-12-13 13:58:13,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:58:13" (1/1) ... [2022-12-13 13:58:13,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:58:14,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:58:14,132 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,152 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_9b4878d5-78be-4809-91a6-a9f4aefc070f/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-12-13 13:58:14,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:58:14,167 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:58:14,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,177 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,178 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,179 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,180 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,183 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,184 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,185 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,186 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,187 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:14,188 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:14,192 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_9b4878d5-78be-4809-91a6-a9f4aefc070f/sv-benchmarks/c/weaver/parallel-lamport.wvr.c[4210,4223] [2022-12-13 13:58:14,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:58:14,205 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:58:14,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14 WrapperNode [2022-12-13 13:58:14,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:58:14,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:58:14,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:58:14,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:58:14,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,238 INFO L138 Inliner]: procedures = 25, calls = 89, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 235 [2022-12-13 13:58:14,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:58:14,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:58:14,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:58:14,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:58:14,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,257 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:58:14,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:58:14,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:58:14,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:58:14,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (1/1) ... [2022-12-13 13:58:14,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:58:14,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:14,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:58:14,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:58:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:58:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:58:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:58:14,320 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:58:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 13:58:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 13:58:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 13:58:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 13:58:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 13:58:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 13:58:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:58:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:58:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:58:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:58:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:58:14,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:58:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:58:14,324 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 13:58:14,420 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:58:14,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:58:14,686 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:58:14,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:58:14,764 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 13:58:14,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:14 BoogieIcfgContainer [2022-12-13 13:58:14,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:58:14,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:58:14,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:58:14,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:58:14,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:58:13" (1/3) ... [2022-12-13 13:58:14,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196c44f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:58:14, skipping insertion in model container [2022-12-13 13:58:14,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:14" (2/3) ... [2022-12-13 13:58:14,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196c44f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:58:14, skipping insertion in model container [2022-12-13 13:58:14,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:14" (3/3) ... [2022-12-13 13:58:14,774 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2022-12-13 13:58:14,782 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 13:58:14,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:58:14,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:58:14,790 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:58:14,841 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 13:58:14,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 186 transitions, 396 flow [2022-12-13 13:58:14,920 INFO L130 PetriNetUnfolder]: 7/183 cut-off events. [2022-12-13 13:58:14,920 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:58:14,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 7/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 100 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-12-13 13:58:14,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 189 places, 186 transitions, 396 flow [2022-12-13 13:58:14,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 172 transitions, 362 flow [2022-12-13 13:58:14,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:58:14,937 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 172 transitions, 362 flow [2022-12-13 13:58:14,939 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 172 transitions, 362 flow [2022-12-13 13:58:14,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 172 transitions, 362 flow [2022-12-13 13:58:14,965 INFO L130 PetriNetUnfolder]: 7/172 cut-off events. [2022-12-13 13:58:14,965 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:58:14,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 7/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 150. Up to 2 conditions per place. [2022-12-13 13:58:14,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 1266 [2022-12-13 13:58:19,585 INFO L134 LiptonReduction]: Checked pairs total: 7979 [2022-12-13 13:58:19,586 INFO L136 LiptonReduction]: Total number of compositions: 160 [2022-12-13 13:58:19,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:58:19,606 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;@75b48f97, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:58:19,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 13:58:19,614 INFO L130 PetriNetUnfolder]: 1/35 cut-off events. [2022-12-13 13:58:19,614 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 13:58:19,614 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:19,615 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] [2022-12-13 13:58:19,615 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 13:58:19,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:19,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1628662468, now seen corresponding path program 1 times [2022-12-13 13:58:19,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:19,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759855220] [2022-12-13 13:58:19,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:19,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:20,148 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 13:58:20,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:20,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759855220] [2022-12-13 13:58:20,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759855220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:20,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:20,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348638412] [2022-12-13 13:58:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:20,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:58:20,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:20,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:58:20,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:58:20,203 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 346 [2022-12-13 13:58:20,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 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 13:58:20,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:20,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 346 [2022-12-13 13:58:20,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:20,350 INFO L130 PetriNetUnfolder]: 406/717 cut-off events. [2022-12-13 13:58:20,350 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2022-12-13 13:58:20,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 717 events. 406/717 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3299 event pairs, 405 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 1330. Up to 667 conditions per place. [2022-12-13 13:58:20,357 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 25 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2022-12-13 13:58:20,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 146 flow [2022-12-13 13:58:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:20,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:58:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-12-13 13:58:20,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47784200385356457 [2022-12-13 13:58:20,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-12-13 13:58:20,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-12-13 13:58:20,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:20,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-12-13 13:58:20,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 13:58:20,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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 13:58:20,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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 13:58:20,387 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 90 flow. Second operand 3 states and 496 transitions. [2022-12-13 13:58:20,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 146 flow [2022-12-13 13:58:20,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 13:58:20,392 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 90 flow [2022-12-13 13:58:20,393 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2022-12-13 13:58:20,395 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2022-12-13 13:58:20,396 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 90 flow [2022-12-13 13:58:20,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 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 13:58:20,396 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:20,396 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] [2022-12-13 13:58:20,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:58:20,397 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 13:58:20,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:20,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1311756679, now seen corresponding path program 1 times [2022-12-13 13:58:20,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:20,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953621554] [2022-12-13 13:58:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:20,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:20,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:20,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953621554] [2022-12-13 13:58:20,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953621554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:20,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:20,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:58:20,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77305225] [2022-12-13 13:58:20,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:20,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:20,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:58:20,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 13:58:20,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:20,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:20,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 13:58:20,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:21,091 INFO L130 PetriNetUnfolder]: 1344/2387 cut-off events. [2022-12-13 13:58:21,091 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-12-13 13:58:21,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 2387 events. 1344/2387 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13605 event pairs, 243 based on Foata normal form. 30/2414 useless extension candidates. Maximal degree in co-relation 4672. Up to 695 conditions per place. [2022-12-13 13:58:21,105 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 102 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2022-12-13 13:58:21,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 124 transitions, 514 flow [2022-12-13 13:58:21,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:58:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:58:21,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1450 transitions. [2022-12-13 13:58:21,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46563904945407836 [2022-12-13 13:58:21,111 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1450 transitions. [2022-12-13 13:58:21,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1450 transitions. [2022-12-13 13:58:21,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:21,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1450 transitions. [2022-12-13 13:58:21,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 161.11111111111111) internal successors, (1450), 9 states have internal predecessors, (1450), 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 13:58:21,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:21,122 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:21,122 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 90 flow. Second operand 9 states and 1450 transitions. [2022-12-13 13:58:21,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 124 transitions, 514 flow [2022-12-13 13:58:21,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 124 transitions, 510 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 13:58:21,125 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 182 flow [2022-12-13 13:58:21,125 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2022-12-13 13:58:21,126 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 9 predicate places. [2022-12-13 13:58:21,126 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 182 flow [2022-12-13 13:58:21,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:21,127 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:21,127 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] [2022-12-13 13:58:21,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:58:21,127 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 13:58:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash -629082249, now seen corresponding path program 2 times [2022-12-13 13:58:21,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:21,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674400173] [2022-12-13 13:58:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:21,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:21,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674400173] [2022-12-13 13:58:21,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674400173] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:21,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:21,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:21,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396286340] [2022-12-13 13:58:21,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:21,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:21,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:21,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:58:21,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 346 [2022-12-13 13:58:21,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:21,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 346 [2022-12-13 13:58:21,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:21,533 INFO L130 PetriNetUnfolder]: 1068/1983 cut-off events. [2022-12-13 13:58:21,533 INFO L131 PetriNetUnfolder]: For 377/377 co-relation queries the response was YES. [2022-12-13 13:58:21,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 1983 events. 1068/1983 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11678 event pairs, 897 based on Foata normal form. 20/1971 useless extension candidates. Maximal degree in co-relation 4362. Up to 1600 conditions per place. [2022-12-13 13:58:21,545 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 44 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2022-12-13 13:58:21,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 301 flow [2022-12-13 13:58:21,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:21,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:58:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2022-12-13 13:58:21,547 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49421965317919075 [2022-12-13 13:58:21,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2022-12-13 13:58:21,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2022-12-13 13:58:21,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:21,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2022-12-13 13:58:21,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 13:58:21,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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 13:58:21,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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 13:58:21,552 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 182 flow. Second operand 3 states and 513 transitions. [2022-12-13 13:58:21,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 301 flow [2022-12-13 13:58:21,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:58:21,561 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 190 flow [2022-12-13 13:58:21,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2022-12-13 13:58:21,562 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2022-12-13 13:58:21,562 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 190 flow [2022-12-13 13:58:21,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:21,563 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] [2022-12-13 13:58:21,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:58:21,563 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 13:58:21,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:21,563 INFO L85 PathProgramCache]: Analyzing trace with hash 229980329, now seen corresponding path program 3 times [2022-12-13 13:58:21,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:21,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200293173] [2022-12-13 13:58:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:21,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:22,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:22,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200293173] [2022-12-13 13:58:22,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200293173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:22,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454673158] [2022-12-13 13:58:22,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:58:22,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:22,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:22,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:22,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:58:22,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 13:58:22,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:22,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 13:58:22,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:22,689 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:22,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:22,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:22,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454673158] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:22,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:22,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 16 [2022-12-13 13:58:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604609072] [2022-12-13 13:58:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:22,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:22,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:58:22,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:58:22,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:22,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:22,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:58:22,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:23,524 INFO L130 PetriNetUnfolder]: 1553/2678 cut-off events. [2022-12-13 13:58:23,525 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2022-12-13 13:58:23,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6203 conditions, 2678 events. 1553/2678 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15279 event pairs, 317 based on Foata normal form. 2/2614 useless extension candidates. Maximal degree in co-relation 6180. Up to 1421 conditions per place. [2022-12-13 13:58:23,546 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 88 selfloop transitions, 11 changer transitions 27/141 dead transitions. [2022-12-13 13:58:23,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 141 transitions, 725 flow [2022-12-13 13:58:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:58:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:58:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1415 transitions. [2022-12-13 13:58:23,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4543994861913937 [2022-12-13 13:58:23,553 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1415 transitions. [2022-12-13 13:58:23,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1415 transitions. [2022-12-13 13:58:23,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:23,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1415 transitions. [2022-12-13 13:58:23,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.22222222222223) internal successors, (1415), 9 states have internal predecessors, (1415), 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 13:58:23,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:23,571 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:23,571 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 190 flow. Second operand 9 states and 1415 transitions. [2022-12-13 13:58:23,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 141 transitions, 725 flow [2022-12-13 13:58:23,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 141 transitions, 721 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:58:23,586 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 251 flow [2022-12-13 13:58:23,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2022-12-13 13:58:23,587 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 22 predicate places. [2022-12-13 13:58:23,587 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 251 flow [2022-12-13 13:58:23,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:23,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:23,588 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] [2022-12-13 13:58:23,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:23,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:23,790 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 13:58:23,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2023151177, now seen corresponding path program 4 times [2022-12-13 13:58:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:23,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459479145] [2022-12-13 13:58:23,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:23,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:24,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:24,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459479145] [2022-12-13 13:58:24,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459479145] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:24,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952441477] [2022-12-13 13:58:24,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:58:24,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:24,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:24,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:24,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:58:24,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:58:24,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:24,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 13:58:24,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:24,626 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:24,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:24,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:24,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952441477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:24,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:24,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-12-13 13:58:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348469818] [2022-12-13 13:58:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:24,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 13:58:24,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:58:24,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 251 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:24,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:24,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:58:24,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:25,494 INFO L130 PetriNetUnfolder]: 1900/3341 cut-off events. [2022-12-13 13:58:25,494 INFO L131 PetriNetUnfolder]: For 1662/1662 co-relation queries the response was YES. [2022-12-13 13:58:25,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8855 conditions, 3341 events. 1900/3341 cut-off events. For 1662/1662 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20366 event pairs, 403 based on Foata normal form. 2/3273 useless extension candidates. Maximal degree in co-relation 8827. Up to 1401 conditions per place. [2022-12-13 13:58:25,510 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 118 selfloop transitions, 11 changer transitions 29/173 dead transitions. [2022-12-13 13:58:25,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 173 transitions, 976 flow [2022-12-13 13:58:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:58:25,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:58:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1431 transitions. [2022-12-13 13:58:25,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4595375722543353 [2022-12-13 13:58:25,517 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1431 transitions. [2022-12-13 13:58:25,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1431 transitions. [2022-12-13 13:58:25,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:25,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1431 transitions. [2022-12-13 13:58:25,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 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 13:58:25,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:25,529 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:25,530 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 251 flow. Second operand 9 states and 1431 transitions. [2022-12-13 13:58:25,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 173 transitions, 976 flow [2022-12-13 13:58:25,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 173 transitions, 970 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 13:58:25,539 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 327 flow [2022-12-13 13:58:25,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=327, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2022-12-13 13:58:25,539 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2022-12-13 13:58:25,539 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 327 flow [2022-12-13 13:58:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:25,540 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:25,540 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] [2022-12-13 13:58:25,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:58:25,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:25,741 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 13:58:25,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash 917943687, now seen corresponding path program 5 times [2022-12-13 13:58:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:25,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248770196] [2022-12-13 13:58:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:25,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:26,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:26,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248770196] [2022-12-13 13:58:26,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248770196] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:26,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144057608] [2022-12-13 13:58:26,085 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:58:26,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:26,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:26,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:26,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:58:26,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:58:26,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:26,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 13:58:26,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:26,538 INFO L321 Elim1Store]: treesize reduction 17, result has 48.5 percent of original size [2022-12-13 13:58:26,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33 [2022-12-13 13:58:26,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:26,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:26,712 INFO L321 Elim1Store]: treesize reduction 5, result has 86.5 percent of original size [2022-12-13 13:58:26,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 49 [2022-12-13 13:58:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:26,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144057608] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:26,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:26,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-13 13:58:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875518362] [2022-12-13 13:58:26,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:26,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 13:58:26,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 13:58:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-12-13 13:58:27,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 346 [2022-12-13 13:58:27,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 327 flow. Second operand has 19 states, 19 states have (on average 143.05263157894737) internal successors, (2718), 19 states have internal predecessors, (2718), 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 13:58:27,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:27,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 346 [2022-12-13 13:58:27,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:28,356 INFO L130 PetriNetUnfolder]: 3519/6437 cut-off events. [2022-12-13 13:58:28,356 INFO L131 PetriNetUnfolder]: For 6834/6954 co-relation queries the response was YES. [2022-12-13 13:58:28,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18874 conditions, 6437 events. 3519/6437 cut-off events. For 6834/6954 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 47002 event pairs, 860 based on Foata normal form. 66/6360 useless extension candidates. Maximal degree in co-relation 18781. Up to 2545 conditions per place. [2022-12-13 13:58:28,397 INFO L137 encePairwiseOnDemand]: 336/346 looper letters, 142 selfloop transitions, 25 changer transitions 24/207 dead transitions. [2022-12-13 13:58:28,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 207 transitions, 1305 flow [2022-12-13 13:58:28,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:58:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 13:58:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1809 transitions. [2022-12-13 13:58:28,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4356936416184971 [2022-12-13 13:58:28,403 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1809 transitions. [2022-12-13 13:58:28,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1809 transitions. [2022-12-13 13:58:28,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:28,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1809 transitions. [2022-12-13 13:58:28,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.75) internal successors, (1809), 12 states have internal predecessors, (1809), 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 13:58:28,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 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 13:58:28,416 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 346.0) internal successors, (4498), 13 states have internal predecessors, (4498), 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 13:58:28,416 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 327 flow. Second operand 12 states and 1809 transitions. [2022-12-13 13:58:28,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 207 transitions, 1305 flow [2022-12-13 13:58:28,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 207 transitions, 1259 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:28,469 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 515 flow [2022-12-13 13:58:28,469 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2022-12-13 13:58:28,470 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2022-12-13 13:58:28,470 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 515 flow [2022-12-13 13:58:28,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 143.05263157894737) internal successors, (2718), 19 states have internal predecessors, (2718), 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 13:58:28,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:28,471 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] [2022-12-13 13:58:28,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:58:28,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:28,672 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 13:58:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:28,673 INFO L85 PathProgramCache]: Analyzing trace with hash 845494597, now seen corresponding path program 6 times [2022-12-13 13:58:28,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:28,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281885910] [2022-12-13 13:58:28,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:28,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:28,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:28,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281885910] [2022-12-13 13:58:28,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281885910] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:28,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:28,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980008381] [2022-12-13 13:58:28,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:28,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:28,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:28,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:28,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:58:28,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 346 [2022-12-13 13:58:28,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 515 flow. Second operand has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:28,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:28,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 346 [2022-12-13 13:58:28,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:29,541 INFO L130 PetriNetUnfolder]: 3546/6805 cut-off events. [2022-12-13 13:58:29,541 INFO L131 PetriNetUnfolder]: For 11316/11410 co-relation queries the response was YES. [2022-12-13 13:58:29,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21948 conditions, 6805 events. 3546/6805 cut-off events. For 11316/11410 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 50344 event pairs, 2623 based on Foata normal form. 38/6723 useless extension candidates. Maximal degree in co-relation 21850. Up to 5828 conditions per place. [2022-12-13 13:58:29,567 INFO L137 encePairwiseOnDemand]: 343/346 looper letters, 81 selfloop transitions, 2 changer transitions 4/104 dead transitions. [2022-12-13 13:58:29,568 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 104 transitions, 818 flow [2022-12-13 13:58:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:58:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2022-12-13 13:58:29,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49421965317919075 [2022-12-13 13:58:29,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2022-12-13 13:58:29,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2022-12-13 13:58:29,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:29,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2022-12-13 13:58:29,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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 13:58:29,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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 13:58:29,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 346.0) internal successors, (1384), 4 states have internal predecessors, (1384), 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 13:58:29,573 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 515 flow. Second operand 3 states and 513 transitions. [2022-12-13 13:58:29,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 104 transitions, 818 flow [2022-12-13 13:58:29,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 104 transitions, 800 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:29,669 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 507 flow [2022-12-13 13:58:29,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=507, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2022-12-13 13:58:29,669 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 41 predicate places. [2022-12-13 13:58:29,669 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 507 flow [2022-12-13 13:58:29,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:29,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:29,670 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] [2022-12-13 13:58:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:58:29,670 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 13:58:29,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1885378881, now seen corresponding path program 7 times [2022-12-13 13:58:29,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:29,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119092837] [2022-12-13 13:58:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:29,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119092837] [2022-12-13 13:58:29,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119092837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:29,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:29,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:58:29,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324455076] [2022-12-13 13:58:29,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:29,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:29,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:29,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:29,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:58:29,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 13:58:29,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 507 flow. Second operand has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:29,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:29,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 13:58:29,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:31,195 INFO L130 PetriNetUnfolder]: 5564/10449 cut-off events. [2022-12-13 13:58:31,195 INFO L131 PetriNetUnfolder]: For 17235/17403 co-relation queries the response was YES. [2022-12-13 13:58:31,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34077 conditions, 10449 events. 5564/10449 cut-off events. For 17235/17403 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 80586 event pairs, 2002 based on Foata normal form. 82/10473 useless extension candidates. Maximal degree in co-relation 21461. Up to 6656 conditions per place. [2022-12-13 13:58:31,236 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 187 selfloop transitions, 15 changer transitions 6/216 dead transitions. [2022-12-13 13:58:31,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 216 transitions, 1725 flow [2022-12-13 13:58:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:58:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:58:31,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1439 transitions. [2022-12-13 13:58:31,238 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46210661528580604 [2022-12-13 13:58:31,238 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1439 transitions. [2022-12-13 13:58:31,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1439 transitions. [2022-12-13 13:58:31,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:31,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1439 transitions. [2022-12-13 13:58:31,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.88888888888889) internal successors, (1439), 9 states have internal predecessors, (1439), 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 13:58:31,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:31,244 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:31,244 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 507 flow. Second operand 9 states and 1439 transitions. [2022-12-13 13:58:31,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 216 transitions, 1725 flow [2022-12-13 13:58:31,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 216 transitions, 1721 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:58:31,355 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 637 flow [2022-12-13 13:58:31,355 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=637, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2022-12-13 13:58:31,355 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 52 predicate places. [2022-12-13 13:58:31,355 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 637 flow [2022-12-13 13:58:31,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:31,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:31,356 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] [2022-12-13 13:58:31,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:58:31,356 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 13:58:31,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:31,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1093381001, now seen corresponding path program 8 times [2022-12-13 13:58:31,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:31,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884695388] [2022-12-13 13:58:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:31,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:31,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:31,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884695388] [2022-12-13 13:58:31,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884695388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:31,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:31,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:58:31,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593491950] [2022-12-13 13:58:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:31,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:31,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:31,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:31,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:58:31,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 13:58:31,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:31,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:31,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 13:58:31,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:32,936 INFO L130 PetriNetUnfolder]: 5980/11481 cut-off events. [2022-12-13 13:58:32,936 INFO L131 PetriNetUnfolder]: For 22723/22901 co-relation queries the response was YES. [2022-12-13 13:58:32,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39029 conditions, 11481 events. 5980/11481 cut-off events. For 22723/22901 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 91754 event pairs, 2166 based on Foata normal form. 82/11487 useless extension candidates. Maximal degree in co-relation 28187. Up to 7636 conditions per place. [2022-12-13 13:58:32,987 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 211 selfloop transitions, 18 changer transitions 10/247 dead transitions. [2022-12-13 13:58:32,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 247 transitions, 2072 flow [2022-12-13 13:58:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:58:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 13:58:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1748 transitions. [2022-12-13 13:58:32,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4592748292170257 [2022-12-13 13:58:32,991 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1748 transitions. [2022-12-13 13:58:32,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1748 transitions. [2022-12-13 13:58:32,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:32,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1748 transitions. [2022-12-13 13:58:32,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.9090909090909) internal successors, (1748), 11 states have internal predecessors, (1748), 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 13:58:32,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 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 13:58:32,999 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 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 13:58:32,999 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 637 flow. Second operand 11 states and 1748 transitions. [2022-12-13 13:58:32,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 247 transitions, 2072 flow [2022-12-13 13:58:33,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 247 transitions, 2070 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-13 13:58:33,152 INFO L231 Difference]: Finished difference. Result has 113 places, 103 transitions, 760 flow [2022-12-13 13:58:33,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=760, PETRI_PLACES=113, PETRI_TRANSITIONS=103} [2022-12-13 13:58:33,153 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 68 predicate places. [2022-12-13 13:58:33,153 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 103 transitions, 760 flow [2022-12-13 13:58:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:33,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:33,154 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] [2022-12-13 13:58:33,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:58:33,154 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 13:58:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:33,154 INFO L85 PathProgramCache]: Analyzing trace with hash -208004923, now seen corresponding path program 9 times [2022-12-13 13:58:33,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:33,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604894526] [2022-12-13 13:58:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:33,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:33,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604894526] [2022-12-13 13:58:33,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604894526] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:33,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239425034] [2022-12-13 13:58:33,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:58:33,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:33,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:33,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:58:33,797 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 13:58:33,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:33,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 13:58:33,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:33,875 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:33,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:33,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:33,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239425034] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:33,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:33,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-12-13 13:58:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15142145] [2022-12-13 13:58:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:33,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:33,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:33,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:33,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:58:33,973 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:58:33,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 103 transitions, 760 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:33,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:33,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:58:33,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:35,693 INFO L130 PetriNetUnfolder]: 8536/15333 cut-off events. [2022-12-13 13:58:35,693 INFO L131 PetriNetUnfolder]: For 35809/35813 co-relation queries the response was YES. [2022-12-13 13:58:35,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55159 conditions, 15333 events. 8536/15333 cut-off events. For 35809/35813 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 122198 event pairs, 1328 based on Foata normal form. 18/15181 useless extension candidates. Maximal degree in co-relation 47440. Up to 8686 conditions per place. [2022-12-13 13:58:35,760 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 158 selfloop transitions, 27 changer transitions 29/240 dead transitions. [2022-12-13 13:58:35,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 240 transitions, 1999 flow [2022-12-13 13:58:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:58:35,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:58:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1285 transitions. [2022-12-13 13:58:35,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46423410404624277 [2022-12-13 13:58:35,763 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1285 transitions. [2022-12-13 13:58:35,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1285 transitions. [2022-12-13 13:58:35,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:35,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1285 transitions. [2022-12-13 13:58:35,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.625) internal successors, (1285), 8 states have internal predecessors, (1285), 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 13:58:35,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:58:35,768 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:58:35,768 INFO L175 Difference]: Start difference. First operand has 113 places, 103 transitions, 760 flow. Second operand 8 states and 1285 transitions. [2022-12-13 13:58:35,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 240 transitions, 1999 flow [2022-12-13 13:58:36,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 240 transitions, 1952 flow, removed 21 selfloop flow, removed 1 redundant places. [2022-12-13 13:58:36,061 INFO L231 Difference]: Finished difference. Result has 124 places, 115 transitions, 922 flow [2022-12-13 13:58:36,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=922, PETRI_PLACES=124, PETRI_TRANSITIONS=115} [2022-12-13 13:58:36,061 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 79 predicate places. [2022-12-13 13:58:36,061 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 115 transitions, 922 flow [2022-12-13 13:58:36,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:36,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:36,062 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] [2022-12-13 13:58:36,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:58:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:58:36,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 13:58:36,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:36,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1352399103, now seen corresponding path program 10 times [2022-12-13 13:58:36,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:36,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219603532] [2022-12-13 13:58:36,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:36,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219603532] [2022-12-13 13:58:36,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219603532] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139676318] [2022-12-13 13:58:36,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:58:36,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:36,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:36,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:36,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:58:36,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:58:36,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:36,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 13:58:36,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:36,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:36,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:37,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:37,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139676318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:37,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:37,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2022-12-13 13:58:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750637998] [2022-12-13 13:58:37,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:37,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:37,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:58:37,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:58:37,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 115 transitions, 922 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:37,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:37,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:58:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:39,371 INFO L130 PetriNetUnfolder]: 8920/16411 cut-off events. [2022-12-13 13:58:39,372 INFO L131 PetriNetUnfolder]: For 46925/46929 co-relation queries the response was YES. [2022-12-13 13:58:39,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64623 conditions, 16411 events. 8920/16411 cut-off events. For 46925/46929 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 136493 event pairs, 1898 based on Foata normal form. 12/16243 useless extension candidates. Maximal degree in co-relation 55909. Up to 8172 conditions per place. [2022-12-13 13:58:39,468 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 162 selfloop transitions, 27 changer transitions 38/253 dead transitions. [2022-12-13 13:58:39,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 253 transitions, 2209 flow [2022-12-13 13:58:39,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:58:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:58:39,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1432 transitions. [2022-12-13 13:58:39,471 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4598587026332691 [2022-12-13 13:58:39,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1432 transitions. [2022-12-13 13:58:39,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1432 transitions. [2022-12-13 13:58:39,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:39,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1432 transitions. [2022-12-13 13:58:39,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.11111111111111) internal successors, (1432), 9 states have internal predecessors, (1432), 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 13:58:39,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:39,479 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:58:39,479 INFO L175 Difference]: Start difference. First operand has 124 places, 115 transitions, 922 flow. Second operand 9 states and 1432 transitions. [2022-12-13 13:58:39,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 253 transitions, 2209 flow [2022-12-13 13:58:40,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 253 transitions, 2142 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-12-13 13:58:40,365 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 951 flow [2022-12-13 13:58:40,365 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=951, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2022-12-13 13:58:40,365 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 85 predicate places. [2022-12-13 13:58:40,366 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 951 flow [2022-12-13 13:58:40,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:40,366 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:40,366 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] [2022-12-13 13:58:40,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:58:40,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 13:58:40,567 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 13:58:40,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1684104193, now seen corresponding path program 11 times [2022-12-13 13:58:40,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:40,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835653257] [2022-12-13 13:58:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:40,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:41,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:41,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835653257] [2022-12-13 13:58:41,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835653257] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:41,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365829172] [2022-12-13 13:58:41,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:58:41,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:41,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:41,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:41,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:58:41,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:58:41,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:41,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-13 13:58:41,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:41,411 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-13 13:58:41,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 13:58:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:41,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:41,646 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:41,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 60 [2022-12-13 13:58:42,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:42,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365829172] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:42,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:42,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2022-12-13 13:58:42,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641999876] [2022-12-13 13:58:42,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:42,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 13:58:42,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:42,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 13:58:42,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-12-13 13:58:42,635 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 346 [2022-12-13 13:58:42,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 951 flow. Second operand has 25 states, 25 states have (on average 140.12) internal successors, (3503), 25 states have internal predecessors, (3503), 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 13:58:42,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:42,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 346 [2022-12-13 13:58:42,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:47,390 INFO L130 PetriNetUnfolder]: 12641/23563 cut-off events. [2022-12-13 13:58:47,390 INFO L131 PetriNetUnfolder]: For 76571/76580 co-relation queries the response was YES. [2022-12-13 13:58:47,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92445 conditions, 23563 events. 12641/23563 cut-off events. For 76571/76580 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 211355 event pairs, 2794 based on Foata normal form. 131/23512 useless extension candidates. Maximal degree in co-relation 92305. Up to 6609 conditions per place. [2022-12-13 13:58:47,527 INFO L137 encePairwiseOnDemand]: 333/346 looper letters, 72 selfloop transitions, 9 changer transitions 513/620 dead transitions. [2022-12-13 13:58:47,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 620 transitions, 5392 flow [2022-12-13 13:58:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 13:58:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-13 13:58:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4454 transitions. [2022-12-13 13:58:47,536 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42909441233140655 [2022-12-13 13:58:47,536 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4454 transitions. [2022-12-13 13:58:47,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4454 transitions. [2022-12-13 13:58:47,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:47,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4454 transitions. [2022-12-13 13:58:47,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 148.46666666666667) internal successors, (4454), 30 states have internal predecessors, (4454), 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 13:58:47,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 346.0) internal successors, (10726), 31 states have internal predecessors, (10726), 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 13:58:47,555 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 346.0) internal successors, (10726), 31 states have internal predecessors, (10726), 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 13:58:47,556 INFO L175 Difference]: Start difference. First operand has 130 places, 117 transitions, 951 flow. Second operand 30 states and 4454 transitions. [2022-12-13 13:58:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 620 transitions, 5392 flow [2022-12-13 13:58:48,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 620 transitions, 5223 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-12-13 13:58:48,628 INFO L231 Difference]: Finished difference. Result has 172 places, 98 transitions, 883 flow [2022-12-13 13:58:48,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=883, PETRI_PLACES=172, PETRI_TRANSITIONS=98} [2022-12-13 13:58:48,628 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 127 predicate places. [2022-12-13 13:58:48,628 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 98 transitions, 883 flow [2022-12-13 13:58:48,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 140.12) internal successors, (3503), 25 states have internal predecessors, (3503), 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 13:58:48,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:48,629 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:58:48,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:58:48,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:58:48,831 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 13:58:48,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2077505340, now seen corresponding path program 12 times [2022-12-13 13:58:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:48,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454876183] [2022-12-13 13:58:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:49,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:49,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454876183] [2022-12-13 13:58:49,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454876183] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:49,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606730266] [2022-12-13 13:58:49,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:58:49,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:49,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:49,487 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:49,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:58:49,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 13:58:49,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:49,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 13:58:49,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:50,005 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:50,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:58:50,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:50,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606730266] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:50,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:50,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-12-13 13:58:50,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983941997] [2022-12-13 13:58:50,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:50,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:50,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:50,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:58:50,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:58:50,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 98 transitions, 883 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:50,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:50,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:58:50,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:51,475 INFO L130 PetriNetUnfolder]: 4188/7594 cut-off events. [2022-12-13 13:58:51,476 INFO L131 PetriNetUnfolder]: For 71043/71047 co-relation queries the response was YES. [2022-12-13 13:58:51,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41239 conditions, 7594 events. 4188/7594 cut-off events. For 71043/71047 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 54476 event pairs, 887 based on Foata normal form. 6/7518 useless extension candidates. Maximal degree in co-relation 41156. Up to 4357 conditions per place. [2022-12-13 13:58:51,519 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 146 selfloop transitions, 17 changer transitions 39/228 dead transitions. [2022-12-13 13:58:51,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 228 transitions, 2271 flow [2022-12-13 13:58:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:58:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:58:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1583 transitions. [2022-12-13 13:58:51,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.457514450867052 [2022-12-13 13:58:51,521 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1583 transitions. [2022-12-13 13:58:51,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1583 transitions. [2022-12-13 13:58:51,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:51,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1583 transitions. [2022-12-13 13:58:51,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 158.3) internal successors, (1583), 10 states have internal predecessors, (1583), 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 13:58:51,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:58:51,525 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:58:51,525 INFO L175 Difference]: Start difference. First operand has 172 places, 98 transitions, 883 flow. Second operand 10 states and 1583 transitions. [2022-12-13 13:58:51,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 228 transitions, 2271 flow [2022-12-13 13:58:51,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 228 transitions, 2025 flow, removed 111 selfloop flow, removed 19 redundant places. [2022-12-13 13:58:51,801 INFO L231 Difference]: Finished difference. Result has 135 places, 97 transitions, 788 flow [2022-12-13 13:58:51,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=788, PETRI_PLACES=135, PETRI_TRANSITIONS=97} [2022-12-13 13:58:51,801 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 90 predicate places. [2022-12-13 13:58:51,801 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 97 transitions, 788 flow [2022-12-13 13:58:51,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:58:51,801 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:51,801 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:58:51,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:52,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:58:52,003 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 13:58:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash 483563162, now seen corresponding path program 13 times [2022-12-13 13:58:52,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:52,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860174238] [2022-12-13 13:58:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:58:52,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:52,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860174238] [2022-12-13 13:58:52,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860174238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:52,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:52,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:58:52,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206525555] [2022-12-13 13:58:52,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:52,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:58:52,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:58:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:58:52,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 13:58:52,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 97 transitions, 788 flow. Second operand has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:52,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:52,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 13:58:52,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:53,050 INFO L130 PetriNetUnfolder]: 3311/6181 cut-off events. [2022-12-13 13:58:53,050 INFO L131 PetriNetUnfolder]: For 29630/29758 co-relation queries the response was YES. [2022-12-13 13:58:53,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27966 conditions, 6181 events. 3311/6181 cut-off events. For 29630/29758 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 43067 event pairs, 1558 based on Foata normal form. 62/6183 useless extension candidates. Maximal degree in co-relation 27898. Up to 4991 conditions per place. [2022-12-13 13:58:53,084 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 127 selfloop transitions, 16 changer transitions 21/173 dead transitions. [2022-12-13 13:58:53,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 173 transitions, 1692 flow [2022-12-13 13:58:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:58:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:58:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1583 transitions. [2022-12-13 13:58:53,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.457514450867052 [2022-12-13 13:58:53,086 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1583 transitions. [2022-12-13 13:58:53,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1583 transitions. [2022-12-13 13:58:53,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:53,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1583 transitions. [2022-12-13 13:58:53,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 158.3) internal successors, (1583), 10 states have internal predecessors, (1583), 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 13:58:53,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:58:53,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:58:53,090 INFO L175 Difference]: Start difference. First operand has 135 places, 97 transitions, 788 flow. Second operand 10 states and 1583 transitions. [2022-12-13 13:58:53,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 173 transitions, 1692 flow [2022-12-13 13:58:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 173 transitions, 1577 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-12-13 13:58:53,187 INFO L231 Difference]: Finished difference. Result has 131 places, 95 transitions, 748 flow [2022-12-13 13:58:53,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=748, PETRI_PLACES=131, PETRI_TRANSITIONS=95} [2022-12-13 13:58:53,187 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2022-12-13 13:58:53,188 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 95 transitions, 748 flow [2022-12-13 13:58:53,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:58:53,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:53,188 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:58:53,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 13:58:53,188 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 13:58:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:53,188 INFO L85 PathProgramCache]: Analyzing trace with hash -456529744, now seen corresponding path program 14 times [2022-12-13 13:58:53,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:53,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486634092] [2022-12-13 13:58:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:53,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:53,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486634092] [2022-12-13 13:58:53,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486634092] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:53,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883548269] [2022-12-13 13:58:53,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:58:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:53,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:53,776 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:53,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:58:53,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:58:53,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:53,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 13:58:53,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:54,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:58:54,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:58:54,102 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:54,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:58:54,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:54,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883548269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:54,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:54,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2022-12-13 13:58:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898027560] [2022-12-13 13:58:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:54,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:58:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:58:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:58:54,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 346 [2022-12-13 13:58:54,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 95 transitions, 748 flow. Second operand has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:58:54,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:54,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 346 [2022-12-13 13:58:54,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:55,338 INFO L130 PetriNetUnfolder]: 3606/6593 cut-off events. [2022-12-13 13:58:55,338 INFO L131 PetriNetUnfolder]: For 26045/26049 co-relation queries the response was YES. [2022-12-13 13:58:55,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28173 conditions, 6593 events. 3606/6593 cut-off events. For 26045/26049 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 46953 event pairs, 677 based on Foata normal form. 5/6512 useless extension candidates. Maximal degree in co-relation 28108. Up to 2629 conditions per place. [2022-12-13 13:58:55,370 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 136 selfloop transitions, 18 changer transitions 34/214 dead transitions. [2022-12-13 13:58:55,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 214 transitions, 1936 flow [2022-12-13 13:58:55,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:58:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:58:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1528 transitions. [2022-12-13 13:58:55,372 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4416184971098266 [2022-12-13 13:58:55,372 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1528 transitions. [2022-12-13 13:58:55,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1528 transitions. [2022-12-13 13:58:55,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:55,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1528 transitions. [2022-12-13 13:58:55,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 152.8) internal successors, (1528), 10 states have internal predecessors, (1528), 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 13:58:55,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:58:55,376 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:58:55,376 INFO L175 Difference]: Start difference. First operand has 131 places, 95 transitions, 748 flow. Second operand 10 states and 1528 transitions. [2022-12-13 13:58:55,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 214 transitions, 1936 flow [2022-12-13 13:58:55,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 214 transitions, 1866 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-12-13 13:58:55,480 INFO L231 Difference]: Finished difference. Result has 134 places, 98 transitions, 798 flow [2022-12-13 13:58:55,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=798, PETRI_PLACES=134, PETRI_TRANSITIONS=98} [2022-12-13 13:58:55,481 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 89 predicate places. [2022-12-13 13:58:55,481 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 98 transitions, 798 flow [2022-12-13 13:58:55,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:58:55,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:55,481 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:58:55,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:58:55,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 13:58:55,683 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 13:58:55,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:55,684 INFO L85 PathProgramCache]: Analyzing trace with hash 919673244, now seen corresponding path program 15 times [2022-12-13 13:58:55,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:55,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547671961] [2022-12-13 13:58:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:55,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:56,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547671961] [2022-12-13 13:58:56,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547671961] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360734897] [2022-12-13 13:58:56,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:58:56,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:56,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:56,332 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:56,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:58:56,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 13:58:56,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:56,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 13:58:56,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:56,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:58:56,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:58:56,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:56,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:58:56,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:56,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360734897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:56,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:56,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2022-12-13 13:58:56,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865557368] [2022-12-13 13:58:56,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:56,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:58:56,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:58:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:58:56,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 346 [2022-12-13 13:58:56,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 98 transitions, 798 flow. Second operand has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:58:56,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:56,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 346 [2022-12-13 13:58:56,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:57,958 INFO L130 PetriNetUnfolder]: 3799/6980 cut-off events. [2022-12-13 13:58:57,958 INFO L131 PetriNetUnfolder]: For 30636/30640 co-relation queries the response was YES. [2022-12-13 13:58:57,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31452 conditions, 6980 events. 3799/6980 cut-off events. For 30636/30640 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 50061 event pairs, 912 based on Foata normal form. 5/6894 useless extension candidates. Maximal degree in co-relation 31383. Up to 3604 conditions per place. [2022-12-13 13:58:57,985 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 158 selfloop transitions, 20 changer transitions 22/226 dead transitions. [2022-12-13 13:58:57,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 226 transitions, 2033 flow [2022-12-13 13:58:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:58:57,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 13:58:57,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1681 transitions. [2022-12-13 13:58:57,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4416710457172885 [2022-12-13 13:58:57,987 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1681 transitions. [2022-12-13 13:58:57,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1681 transitions. [2022-12-13 13:58:57,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:57,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1681 transitions. [2022-12-13 13:58:57,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 152.8181818181818) internal successors, (1681), 11 states have internal predecessors, (1681), 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 13:58:57,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 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 13:58:57,991 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 346.0) internal successors, (4152), 12 states have internal predecessors, (4152), 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 13:58:57,992 INFO L175 Difference]: Start difference. First operand has 134 places, 98 transitions, 798 flow. Second operand 11 states and 1681 transitions. [2022-12-13 13:58:57,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 226 transitions, 2033 flow [2022-12-13 13:58:58,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 226 transitions, 1978 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-12-13 13:58:58,121 INFO L231 Difference]: Finished difference. Result has 139 places, 101 transitions, 856 flow [2022-12-13 13:58:58,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=856, PETRI_PLACES=139, PETRI_TRANSITIONS=101} [2022-12-13 13:58:58,121 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2022-12-13 13:58:58,121 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 101 transitions, 856 flow [2022-12-13 13:58:58,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:58:58,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:58,122 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:58:58,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:58,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 13:58:58,323 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 13:58:58,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:58,324 INFO L85 PathProgramCache]: Analyzing trace with hash 842900648, now seen corresponding path program 16 times [2022-12-13 13:58:58,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:58,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16831937] [2022-12-13 13:58:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:58,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:58,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:58,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16831937] [2022-12-13 13:58:58,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16831937] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:58,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576282055] [2022-12-13 13:58:58,953 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:58:58,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:58,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:58,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:58,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:58:59,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:58:59,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:59,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 13:58:59,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:59,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:58:59,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:58:59,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:58:59,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:58:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:58:59,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:59,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576282055] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:59,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:58:59,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2022-12-13 13:58:59,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662810862] [2022-12-13 13:58:59,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:59,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:58:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:58:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:58:59,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 346 [2022-12-13 13:58:59,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 101 transitions, 856 flow. Second operand has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:58:59,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:59,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 346 [2022-12-13 13:58:59,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:00,375 INFO L130 PetriNetUnfolder]: 3707/6762 cut-off events. [2022-12-13 13:59:00,375 INFO L131 PetriNetUnfolder]: For 33323/33327 co-relation queries the response was YES. [2022-12-13 13:59:00,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31486 conditions, 6762 events. 3707/6762 cut-off events. For 33323/33327 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 48151 event pairs, 684 based on Foata normal form. 5/6681 useless extension candidates. Maximal degree in co-relation 31416. Up to 3609 conditions per place. [2022-12-13 13:59:00,408 INFO L137 encePairwiseOnDemand]: 337/346 looper letters, 104 selfloop transitions, 15 changer transitions 60/205 dead transitions. [2022-12-13 13:59:00,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 205 transitions, 1878 flow [2022-12-13 13:59:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:59:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:59:00,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1385 transitions. [2022-12-13 13:59:00,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4447655748233783 [2022-12-13 13:59:00,410 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1385 transitions. [2022-12-13 13:59:00,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1385 transitions. [2022-12-13 13:59:00,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:00,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1385 transitions. [2022-12-13 13:59:00,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 153.88888888888889) internal successors, (1385), 9 states have internal predecessors, (1385), 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 13:59:00,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:00,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:00,414 INFO L175 Difference]: Start difference. First operand has 139 places, 101 transitions, 856 flow. Second operand 9 states and 1385 transitions. [2022-12-13 13:59:00,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 205 transitions, 1878 flow [2022-12-13 13:59:00,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 205 transitions, 1814 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-12-13 13:59:00,585 INFO L231 Difference]: Finished difference. Result has 139 places, 90 transitions, 733 flow [2022-12-13 13:59:00,585 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=733, PETRI_PLACES=139, PETRI_TRANSITIONS=90} [2022-12-13 13:59:00,585 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2022-12-13 13:59:00,585 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 90 transitions, 733 flow [2022-12-13 13:59:00,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:59:00,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:00,586 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:00,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 13:59:00,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 13:59:00,787 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 13:59:00,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:00,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1616398630, now seen corresponding path program 17 times [2022-12-13 13:59:00,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:00,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231780340] [2022-12-13 13:59:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:00,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:00,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231780340] [2022-12-13 13:59:00,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231780340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:00,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:59:00,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:59:00,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261278335] [2022-12-13 13:59:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:00,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:00,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:00,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 13:59:00,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 90 transitions, 733 flow. Second operand has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:59:00,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:00,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 13:59:00,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:01,577 INFO L130 PetriNetUnfolder]: 2449/4598 cut-off events. [2022-12-13 13:59:01,577 INFO L131 PetriNetUnfolder]: For 23471/23491 co-relation queries the response was YES. [2022-12-13 13:59:01,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21054 conditions, 4598 events. 2449/4598 cut-off events. For 23471/23491 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 30889 event pairs, 1291 based on Foata normal form. 50/4611 useless extension candidates. Maximal degree in co-relation 20985. Up to 3626 conditions per place. [2022-12-13 13:59:01,597 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 73 selfloop transitions, 4 changer transitions 57/142 dead transitions. [2022-12-13 13:59:01,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 142 transitions, 1430 flow [2022-12-13 13:59:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:59:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:59:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1418 transitions. [2022-12-13 13:59:01,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45536287732819525 [2022-12-13 13:59:01,598 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1418 transitions. [2022-12-13 13:59:01,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1418 transitions. [2022-12-13 13:59:01,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:01,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1418 transitions. [2022-12-13 13:59:01,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 157.55555555555554) internal successors, (1418), 9 states have internal predecessors, (1418), 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 13:59:01,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:01,602 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:01,602 INFO L175 Difference]: Start difference. First operand has 139 places, 90 transitions, 733 flow. Second operand 9 states and 1418 transitions. [2022-12-13 13:59:01,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 142 transitions, 1430 flow [2022-12-13 13:59:01,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 142 transitions, 1303 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-12-13 13:59:01,668 INFO L231 Difference]: Finished difference. Result has 127 places, 76 transitions, 557 flow [2022-12-13 13:59:01,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=557, PETRI_PLACES=127, PETRI_TRANSITIONS=76} [2022-12-13 13:59:01,668 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2022-12-13 13:59:01,669 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 76 transitions, 557 flow [2022-12-13 13:59:01,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:59:01,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:01,669 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:01,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 13:59:01,669 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 13:59:01,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:01,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2080298256, now seen corresponding path program 18 times [2022-12-13 13:59:01,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:01,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466323719] [2022-12-13 13:59:01,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:01,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:01,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:01,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466323719] [2022-12-13 13:59:01,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466323719] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:01,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:59:01,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:59:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925296889] [2022-12-13 13:59:01,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:59:01,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 346 [2022-12-13 13:59:01,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 76 transitions, 557 flow. Second operand has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:59:01,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:01,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 346 [2022-12-13 13:59:01,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:02,176 INFO L130 PetriNetUnfolder]: 1167/2302 cut-off events. [2022-12-13 13:59:02,176 INFO L131 PetriNetUnfolder]: For 9109/9115 co-relation queries the response was YES. [2022-12-13 13:59:02,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9741 conditions, 2302 events. 1167/2302 cut-off events. For 9109/9115 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14405 event pairs, 358 based on Foata normal form. 35/2329 useless extension candidates. Maximal degree in co-relation 9677. Up to 631 conditions per place. [2022-12-13 13:59:02,190 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 94 selfloop transitions, 19 changer transitions 18/138 dead transitions. [2022-12-13 13:59:02,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 138 transitions, 1252 flow [2022-12-13 13:59:02,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:59:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:59:02,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1277 transitions. [2022-12-13 13:59:02,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4613439306358382 [2022-12-13 13:59:02,192 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1277 transitions. [2022-12-13 13:59:02,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1277 transitions. [2022-12-13 13:59:02,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:02,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1277 transitions. [2022-12-13 13:59:02,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.625) internal successors, (1277), 8 states have internal predecessors, (1277), 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 13:59:02,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:02,197 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:02,197 INFO L175 Difference]: Start difference. First operand has 127 places, 76 transitions, 557 flow. Second operand 8 states and 1277 transitions. [2022-12-13 13:59:02,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 138 transitions, 1252 flow [2022-12-13 13:59:02,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 138 transitions, 1090 flow, removed 60 selfloop flow, removed 16 redundant places. [2022-12-13 13:59:02,230 INFO L231 Difference]: Finished difference. Result has 105 places, 63 transitions, 426 flow [2022-12-13 13:59:02,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=426, PETRI_PLACES=105, PETRI_TRANSITIONS=63} [2022-12-13 13:59:02,231 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2022-12-13 13:59:02,231 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 63 transitions, 426 flow [2022-12-13 13:59:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.28571428571428) internal successors, (1066), 7 states have internal predecessors, (1066), 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 13:59:02,231 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:02,231 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:02,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 13:59:02,231 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 13:59:02,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:02,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1198602498, now seen corresponding path program 19 times [2022-12-13 13:59:02,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:02,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666450816] [2022-12-13 13:59:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:02,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:02,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666450816] [2022-12-13 13:59:02,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666450816] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:02,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816865103] [2022-12-13 13:59:02,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:59:02,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:02,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:02,779 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:02,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:59:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:02,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 13:59:02,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:02,982 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:02,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:02,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:02,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816865103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:02,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:02,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2022-12-13 13:59:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814942286] [2022-12-13 13:59:02,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:02,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:02,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:02,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:59:03,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:59:03,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 63 transitions, 426 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:03,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:03,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:59:03,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:03,547 INFO L130 PetriNetUnfolder]: 661/1335 cut-off events. [2022-12-13 13:59:03,547 INFO L131 PetriNetUnfolder]: For 2975/3002 co-relation queries the response was YES. [2022-12-13 13:59:03,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 1335 events. 661/1335 cut-off events. For 2975/3002 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7865 event pairs, 325 based on Foata normal form. 2/1279 useless extension candidates. Maximal degree in co-relation 4900. Up to 857 conditions per place. [2022-12-13 13:59:03,552 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 51 selfloop transitions, 5 changer transitions 26/100 dead transitions. [2022-12-13 13:59:03,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 100 transitions, 777 flow [2022-12-13 13:59:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:59:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:59:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1237 transitions. [2022-12-13 13:59:03,554 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44689306358381503 [2022-12-13 13:59:03,554 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1237 transitions. [2022-12-13 13:59:03,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1237 transitions. [2022-12-13 13:59:03,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:03,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1237 transitions. [2022-12-13 13:59:03,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 154.625) internal successors, (1237), 8 states have internal predecessors, (1237), 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 13:59:03,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:03,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:03,556 INFO L175 Difference]: Start difference. First operand has 105 places, 63 transitions, 426 flow. Second operand 8 states and 1237 transitions. [2022-12-13 13:59:03,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 100 transitions, 777 flow [2022-12-13 13:59:03,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 720 flow, removed 17 selfloop flow, removed 9 redundant places. [2022-12-13 13:59:03,563 INFO L231 Difference]: Finished difference. Result has 102 places, 63 transitions, 411 flow [2022-12-13 13:59:03,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=411, PETRI_PLACES=102, PETRI_TRANSITIONS=63} [2022-12-13 13:59:03,564 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 57 predicate places. [2022-12-13 13:59:03,564 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 63 transitions, 411 flow [2022-12-13 13:59:03,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:03,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:03,564 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:03,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 13:59:03,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:03,765 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 13:59:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:03,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1483034792, now seen corresponding path program 20 times [2022-12-13 13:59:03,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:03,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986273324] [2022-12-13 13:59:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:03,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:04,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:04,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986273324] [2022-12-13 13:59:04,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986273324] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:04,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739641495] [2022-12-13 13:59:04,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:59:04,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:04,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:04,303 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:04,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:59:04,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:59:04,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:04,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 13:59:04,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:04,490 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:04,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:04,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:04,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739641495] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:04,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:04,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2022-12-13 13:59:04,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900059368] [2022-12-13 13:59:04,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:04,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:04,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:04,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:04,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:59:04,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:59:04,634 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 63 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:04,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:04,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:59:04,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:05,058 INFO L130 PetriNetUnfolder]: 649/1305 cut-off events. [2022-12-13 13:59:05,058 INFO L131 PetriNetUnfolder]: For 2533/2536 co-relation queries the response was YES. [2022-12-13 13:59:05,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 1305 events. 649/1305 cut-off events. For 2533/2536 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7744 event pairs, 306 based on Foata normal form. 2/1251 useless extension candidates. Maximal degree in co-relation 4722. Up to 627 conditions per place. [2022-12-13 13:59:05,062 INFO L137 encePairwiseOnDemand]: 339/346 looper letters, 78 selfloop transitions, 5 changer transitions 24/125 dead transitions. [2022-12-13 13:59:05,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 125 transitions, 938 flow [2022-12-13 13:59:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:59:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:59:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1408 transitions. [2022-12-13 13:59:05,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45215157353885677 [2022-12-13 13:59:05,064 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1408 transitions. [2022-12-13 13:59:05,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1408 transitions. [2022-12-13 13:59:05,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:05,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1408 transitions. [2022-12-13 13:59:05,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 156.44444444444446) internal successors, (1408), 9 states have internal predecessors, (1408), 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 13:59:05,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:05,067 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:05,067 INFO L175 Difference]: Start difference. First operand has 102 places, 63 transitions, 411 flow. Second operand 9 states and 1408 transitions. [2022-12-13 13:59:05,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 125 transitions, 938 flow [2022-12-13 13:59:05,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 125 transitions, 910 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-12-13 13:59:05,073 INFO L231 Difference]: Finished difference. Result has 104 places, 62 transitions, 407 flow [2022-12-13 13:59:05,073 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=407, PETRI_PLACES=104, PETRI_TRANSITIONS=62} [2022-12-13 13:59:05,073 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2022-12-13 13:59:05,073 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 62 transitions, 407 flow [2022-12-13 13:59:05,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:05,074 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:05,074 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:05,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:59:05,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:05,275 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 13:59:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash -333927132, now seen corresponding path program 21 times [2022-12-13 13:59:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:05,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125797632] [2022-12-13 13:59:05,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:05,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:05,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125797632] [2022-12-13 13:59:05,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125797632] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:05,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099714809] [2022-12-13 13:59:05,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:59:05,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:05,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:05,751 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:05,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:59:05,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 13:59:05,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 34 conjunts are in the unsatisfiable core [2022-12-13 13:59:05,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:06,050 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:06,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:06,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:06,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099714809] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:06,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:06,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-12-13 13:59:06,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339744548] [2022-12-13 13:59:06,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:06,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:06,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:59:06,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:59:06,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 62 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:06,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:06,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:59:06,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:06,472 INFO L130 PetriNetUnfolder]: 636/1283 cut-off events. [2022-12-13 13:59:06,472 INFO L131 PetriNetUnfolder]: For 2693/2694 co-relation queries the response was YES. [2022-12-13 13:59:06,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4769 conditions, 1283 events. 636/1283 cut-off events. For 2693/2694 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7389 event pairs, 324 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 4721. Up to 700 conditions per place. [2022-12-13 13:59:06,477 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 81 selfloop transitions, 12 changer transitions 15/126 dead transitions. [2022-12-13 13:59:06,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 126 transitions, 968 flow [2022-12-13 13:59:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:59:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:59:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1260 transitions. [2022-12-13 13:59:06,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4552023121387283 [2022-12-13 13:59:06,478 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1260 transitions. [2022-12-13 13:59:06,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1260 transitions. [2022-12-13 13:59:06,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:06,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1260 transitions. [2022-12-13 13:59:06,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 157.5) internal successors, (1260), 8 states have internal predecessors, (1260), 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 13:59:06,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:06,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:06,481 INFO L175 Difference]: Start difference. First operand has 104 places, 62 transitions, 407 flow. Second operand 8 states and 1260 transitions. [2022-12-13 13:59:06,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 126 transitions, 968 flow [2022-12-13 13:59:06,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 126 transitions, 921 flow, removed 20 selfloop flow, removed 8 redundant places. [2022-12-13 13:59:06,486 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 491 flow [2022-12-13 13:59:06,486 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=491, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2022-12-13 13:59:06,487 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 58 predicate places. [2022-12-13 13:59:06,487 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 491 flow [2022-12-13 13:59:06,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:06,487 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:06,487 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:06,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 13:59:06,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:06,688 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 13:59:06,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:06,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2064771200, now seen corresponding path program 22 times [2022-12-13 13:59:06,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:06,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122864413] [2022-12-13 13:59:06,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:06,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:07,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:07,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:07,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122864413] [2022-12-13 13:59:07,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122864413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:07,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054592237] [2022-12-13 13:59:07,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:59:07,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:07,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:07,287 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:07,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 13:59:07,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:59:07,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:07,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 13:59:07,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:07,461 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:07,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:07,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:07,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054592237] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:07,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:07,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-12-13 13:59:07,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280864668] [2022-12-13 13:59:07,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:07,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:07,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:07,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:59:07,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:59:07,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 491 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:07,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:07,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:59:07,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:08,004 INFO L130 PetriNetUnfolder]: 637/1314 cut-off events. [2022-12-13 13:59:08,004 INFO L131 PetriNetUnfolder]: For 3101/3102 co-relation queries the response was YES. [2022-12-13 13:59:08,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4862 conditions, 1314 events. 637/1314 cut-off events. For 3101/3102 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7847 event pairs, 318 based on Foata normal form. 2/1260 useless extension candidates. Maximal degree in co-relation 4812. Up to 659 conditions per place. [2022-12-13 13:59:08,011 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 81 selfloop transitions, 11 changer transitions 16/126 dead transitions. [2022-12-13 13:59:08,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 126 transitions, 1009 flow [2022-12-13 13:59:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:59:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:59:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1403 transitions. [2022-12-13 13:59:08,013 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45054592164418755 [2022-12-13 13:59:08,013 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1403 transitions. [2022-12-13 13:59:08,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1403 transitions. [2022-12-13 13:59:08,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:08,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1403 transitions. [2022-12-13 13:59:08,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 155.88888888888889) internal successors, (1403), 9 states have internal predecessors, (1403), 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 13:59:08,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:08,016 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:08,016 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 491 flow. Second operand 9 states and 1403 transitions. [2022-12-13 13:59:08,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 126 transitions, 1009 flow [2022-12-13 13:59:08,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 126 transitions, 958 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-12-13 13:59:08,022 INFO L231 Difference]: Finished difference. Result has 109 places, 70 transitions, 481 flow [2022-12-13 13:59:08,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=481, PETRI_PLACES=109, PETRI_TRANSITIONS=70} [2022-12-13 13:59:08,022 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2022-12-13 13:59:08,022 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 70 transitions, 481 flow [2022-12-13 13:59:08,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:08,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:08,022 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:08,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 13:59:08,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 13:59:08,224 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 13:59:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:08,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2118626990, now seen corresponding path program 23 times [2022-12-13 13:59:08,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:08,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646683656] [2022-12-13 13:59:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:08,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:08,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:08,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646683656] [2022-12-13 13:59:08,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646683656] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:08,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061000461] [2022-12-13 13:59:08,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:59:08,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:08,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:08,943 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:08,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 13:59:09,039 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:59:09,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:09,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 13:59:09,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:09,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:09,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:59:09,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:59:09,247 INFO L321 Elim1Store]: treesize reduction 10, result has 85.5 percent of original size [2022-12-13 13:59:09,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 78 [2022-12-13 13:59:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:09,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061000461] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:09,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:59:09,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10, 7] total 19 [2022-12-13 13:59:09,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608908242] [2022-12-13 13:59:09,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:59:09,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:59:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:59:09,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 346 [2022-12-13 13:59:09,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 70 transitions, 481 flow. Second operand has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:09,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:09,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 346 [2022-12-13 13:59:09,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:09,668 INFO L130 PetriNetUnfolder]: 631/1304 cut-off events. [2022-12-13 13:59:09,668 INFO L131 PetriNetUnfolder]: For 2979/2980 co-relation queries the response was YES. [2022-12-13 13:59:09,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 1304 events. 631/1304 cut-off events. For 2979/2980 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7773 event pairs, 322 based on Foata normal form. 2/1250 useless extension candidates. Maximal degree in co-relation 4705. Up to 731 conditions per place. [2022-12-13 13:59:09,673 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 71 selfloop transitions, 10 changer transitions 29/128 dead transitions. [2022-12-13 13:59:09,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 128 transitions, 986 flow [2022-12-13 13:59:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:59:09,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:59:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1554 transitions. [2022-12-13 13:59:09,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44913294797687864 [2022-12-13 13:59:09,675 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1554 transitions. [2022-12-13 13:59:09,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1554 transitions. [2022-12-13 13:59:09,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:09,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1554 transitions. [2022-12-13 13:59:09,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 155.4) internal successors, (1554), 10 states have internal predecessors, (1554), 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 13:59:09,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:09,681 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:09,681 INFO L175 Difference]: Start difference. First operand has 109 places, 70 transitions, 481 flow. Second operand 10 states and 1554 transitions. [2022-12-13 13:59:09,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 128 transitions, 986 flow [2022-12-13 13:59:09,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 128 transitions, 955 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-12-13 13:59:09,690 INFO L231 Difference]: Finished difference. Result has 110 places, 67 transitions, 456 flow [2022-12-13 13:59:09,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=456, PETRI_PLACES=110, PETRI_TRANSITIONS=67} [2022-12-13 13:59:09,691 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2022-12-13 13:59:09,691 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 67 transitions, 456 flow [2022-12-13 13:59:09,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.0) internal successors, (1050), 7 states have internal predecessors, (1050), 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 13:59:09,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:09,691 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:09,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 13:59:09,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 13:59:09,893 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 13:59:09,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1847433044, now seen corresponding path program 24 times [2022-12-13 13:59:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:09,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416313713] [2022-12-13 13:59:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:10,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:10,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416313713] [2022-12-13 13:59:10,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416313713] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:10,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544576283] [2022-12-13 13:59:10,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:59:10,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:10,440 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:10,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 13:59:10,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 13:59:10,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:10,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 13:59:10,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:10,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:10,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:10,695 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:10,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:10,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:10,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544576283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:10,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:10,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2022-12-13 13:59:10,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851542955] [2022-12-13 13:59:10,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:10,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:59:10,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:59:10,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-12-13 13:59:10,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 346 [2022-12-13 13:59:10,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 67 transitions, 456 flow. Second operand has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:59:10,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:10,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 346 [2022-12-13 13:59:10,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:11,273 INFO L130 PetriNetUnfolder]: 579/1226 cut-off events. [2022-12-13 13:59:11,273 INFO L131 PetriNetUnfolder]: For 2712/2713 co-relation queries the response was YES. [2022-12-13 13:59:11,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4439 conditions, 1226 events. 579/1226 cut-off events. For 2712/2713 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7248 event pairs, 337 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 4393. Up to 634 conditions per place. [2022-12-13 13:59:11,277 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 56 selfloop transitions, 9 changer transitions 27/110 dead transitions. [2022-12-13 13:59:11,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 110 transitions, 859 flow [2022-12-13 13:59:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:59:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:59:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1205 transitions. [2022-12-13 13:59:11,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43533236994219654 [2022-12-13 13:59:11,279 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1205 transitions. [2022-12-13 13:59:11,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1205 transitions. [2022-12-13 13:59:11,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:11,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1205 transitions. [2022-12-13 13:59:11,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 150.625) internal successors, (1205), 8 states have internal predecessors, (1205), 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 13:59:11,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:11,282 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:11,282 INFO L175 Difference]: Start difference. First operand has 110 places, 67 transitions, 456 flow. Second operand 8 states and 1205 transitions. [2022-12-13 13:59:11,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 110 transitions, 859 flow [2022-12-13 13:59:11,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 110 transitions, 825 flow, removed 5 selfloop flow, removed 9 redundant places. [2022-12-13 13:59:11,287 INFO L231 Difference]: Finished difference. Result has 108 places, 67 transitions, 465 flow [2022-12-13 13:59:11,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=108, PETRI_TRANSITIONS=67} [2022-12-13 13:59:11,288 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 63 predicate places. [2022-12-13 13:59:11,288 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 67 transitions, 465 flow [2022-12-13 13:59:11,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:59:11,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:11,288 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:11,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 13:59:11,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 13:59:11,489 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 13:59:11,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash -447378400, now seen corresponding path program 25 times [2022-12-13 13:59:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:11,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894064421] [2022-12-13 13:59:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:12,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894064421] [2022-12-13 13:59:12,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894064421] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:12,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624113692] [2022-12-13 13:59:12,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:59:12,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:12,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:12,329 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:12,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 13:59:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:12,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 13:59:12,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:12,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:12,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:12,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:12,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:59:12,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:59:14,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:14,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 118 [2022-12-13 13:59:14,860 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:14,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 56 [2022-12-13 13:59:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:15,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624113692] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:15,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:59:15,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 28 [2022-12-13 13:59:15,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616619049] [2022-12-13 13:59:15,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:15,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:59:15,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:59:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=783, Unknown=3, NotChecked=0, Total=870 [2022-12-13 13:59:17,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:59:19,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:59:21,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:59:23,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:59:25,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:59:27,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-13 13:59:27,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 346 [2022-12-13 13:59:27,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 67 transitions, 465 flow. Second operand has 10 states, 10 states have (on average 133.8) internal successors, (1338), 10 states have internal predecessors, (1338), 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 13:59:27,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:27,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 346 [2022-12-13 13:59:27,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:31,846 INFO L130 PetriNetUnfolder]: 542/1144 cut-off events. [2022-12-13 13:59:31,846 INFO L131 PetriNetUnfolder]: For 2639/2640 co-relation queries the response was YES. [2022-12-13 13:59:31,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 1144 events. 542/1144 cut-off events. For 2639/2640 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6756 event pairs, 316 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 4146. Up to 567 conditions per place. [2022-12-13 13:59:31,852 INFO L137 encePairwiseOnDemand]: 332/346 looper letters, 50 selfloop transitions, 18 changer transitions 22/108 dead transitions. [2022-12-13 13:59:31,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 108 transitions, 864 flow [2022-12-13 13:59:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:59:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:59:31,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1384 transitions. [2022-12-13 13:59:31,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-13 13:59:31,855 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1384 transitions. [2022-12-13 13:59:31,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1384 transitions. [2022-12-13 13:59:31,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:31,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1384 transitions. [2022-12-13 13:59:31,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.4) internal successors, (1384), 10 states have internal predecessors, (1384), 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 13:59:31,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:31,861 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:31,861 INFO L175 Difference]: Start difference. First operand has 108 places, 67 transitions, 465 flow. Second operand 10 states and 1384 transitions. [2022-12-13 13:59:31,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 108 transitions, 864 flow [2022-12-13 13:59:31,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 834 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-12-13 13:59:31,871 INFO L231 Difference]: Finished difference. Result has 111 places, 74 transitions, 544 flow [2022-12-13 13:59:31,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=544, PETRI_PLACES=111, PETRI_TRANSITIONS=74} [2022-12-13 13:59:31,871 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 66 predicate places. [2022-12-13 13:59:31,871 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 74 transitions, 544 flow [2022-12-13 13:59:31,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.8) internal successors, (1338), 10 states have internal predecessors, (1338), 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 13:59:31,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:31,872 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:31,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 13:59:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:32,073 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 13:59:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2093843304, now seen corresponding path program 26 times [2022-12-13 13:59:32,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:32,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623802890] [2022-12-13 13:59:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:32,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:32,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623802890] [2022-12-13 13:59:32,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623802890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:32,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386031274] [2022-12-13 13:59:32,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:59:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:32,811 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:32,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 13:59:32,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:59:32,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:32,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 13:59:32,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:33,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:33,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:33,164 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:33,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:33,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:33,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386031274] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:33,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:33,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2022-12-13 13:59:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487976110] [2022-12-13 13:59:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:33,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 13:59:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 13:59:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-12-13 13:59:33,371 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 346 [2022-12-13 13:59:33,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 74 transitions, 544 flow. Second operand has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:59:33,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:33,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 346 [2022-12-13 13:59:33,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:33,770 INFO L130 PetriNetUnfolder]: 534/1108 cut-off events. [2022-12-13 13:59:33,770 INFO L131 PetriNetUnfolder]: For 2627/2658 co-relation queries the response was YES. [2022-12-13 13:59:33,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 1108 events. 534/1108 cut-off events. For 2627/2658 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6514 event pairs, 312 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 4321. Up to 594 conditions per place. [2022-12-13 13:59:33,774 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 30 selfloop transitions, 3 changer transitions 61/105 dead transitions. [2022-12-13 13:59:33,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 105 transitions, 884 flow [2022-12-13 13:59:33,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:59:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:59:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1336 transitions. [2022-12-13 13:59:33,776 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4290301862556198 [2022-12-13 13:59:33,776 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1336 transitions. [2022-12-13 13:59:33,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1336 transitions. [2022-12-13 13:59:33,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:33,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1336 transitions. [2022-12-13 13:59:33,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.44444444444446) internal successors, (1336), 9 states have internal predecessors, (1336), 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 13:59:33,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:33,779 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 346.0) internal successors, (3460), 10 states have internal predecessors, (3460), 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 13:59:33,779 INFO L175 Difference]: Start difference. First operand has 111 places, 74 transitions, 544 flow. Second operand 9 states and 1336 transitions. [2022-12-13 13:59:33,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 105 transitions, 884 flow [2022-12-13 13:59:33,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 842 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-12-13 13:59:33,785 INFO L231 Difference]: Finished difference. Result has 110 places, 44 transitions, 270 flow [2022-12-13 13:59:33,785 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=270, PETRI_PLACES=110, PETRI_TRANSITIONS=44} [2022-12-13 13:59:33,786 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2022-12-13 13:59:33,786 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 44 transitions, 270 flow [2022-12-13 13:59:33,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.8) internal successors, (1438), 10 states have internal predecessors, (1438), 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 13:59:33,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:33,786 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:33,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 13:59:33,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 13:59:33,988 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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 13:59:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:33,989 INFO L85 PathProgramCache]: Analyzing trace with hash 87277656, now seen corresponding path program 27 times [2022-12-13 13:59:33,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:33,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199471084] [2022-12-13 13:59:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:33,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:34,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199471084] [2022-12-13 13:59:34,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199471084] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:34,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076753535] [2022-12-13 13:59:34,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:59:34,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:34,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:34,901 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:34,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 13:59:35,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 13:59:35,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:35,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 13:59:35,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:35,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:35,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:35,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:35,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:35,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:35,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:35,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:35,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076753535] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:35,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:35,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 20 [2022-12-13 13:59:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052735634] [2022-12-13 13:59:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:35,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 13:59:35,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:35,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 13:59:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-12-13 13:59:35,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 346 [2022-12-13 13:59:35,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 44 transitions, 270 flow. Second operand has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 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 13:59:35,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:35,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 346 [2022-12-13 13:59:35,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:36,227 INFO L130 PetriNetUnfolder]: 225/478 cut-off events. [2022-12-13 13:59:36,227 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2022-12-13 13:59:36,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 478 events. 225/478 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2017 event pairs, 66 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 1668. Up to 136 conditions per place. [2022-12-13 13:59:36,229 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 45 selfloop transitions, 8 changer transitions 18/82 dead transitions. [2022-12-13 13:59:36,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 82 transitions, 590 flow [2022-12-13 13:59:36,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:59:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:59:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1453 transitions. [2022-12-13 13:59:36,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41994219653179193 [2022-12-13 13:59:36,230 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1453 transitions. [2022-12-13 13:59:36,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1453 transitions. [2022-12-13 13:59:36,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:36,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1453 transitions. [2022-12-13 13:59:36,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.3) internal successors, (1453), 10 states have internal predecessors, (1453), 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 13:59:36,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:36,235 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:36,236 INFO L175 Difference]: Start difference. First operand has 110 places, 44 transitions, 270 flow. Second operand 10 states and 1453 transitions. [2022-12-13 13:59:36,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 82 transitions, 590 flow [2022-12-13 13:59:36,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 82 transitions, 450 flow, removed 33 selfloop flow, removed 32 redundant places. [2022-12-13 13:59:36,240 INFO L231 Difference]: Finished difference. Result has 70 places, 46 transitions, 200 flow [2022-12-13 13:59:36,240 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=46} [2022-12-13 13:59:36,241 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2022-12-13 13:59:36,241 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 46 transitions, 200 flow [2022-12-13 13:59:36,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 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 13:59:36,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:36,241 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:36,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 13:59:36,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:36,443 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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 13:59:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash -891431670, now seen corresponding path program 28 times [2022-12-13 13:59:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:36,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59166139] [2022-12-13 13:59:36,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:36,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:37,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:37,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59166139] [2022-12-13 13:59:37,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59166139] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:37,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581026673] [2022-12-13 13:59:37,037 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:59:37,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:37,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:37,037 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:37,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 13:59:37,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:59:37,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:37,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 13:59:37,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:37,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:37,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:37,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:37,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:37,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:37,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:37,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:59:37,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581026673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:59:37,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 13:59:37,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 18 [2022-12-13 13:59:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436715025] [2022-12-13 13:59:37,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:37,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 13:59:37,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 13:59:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:59:37,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 346 [2022-12-13 13:59:37,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 46 transitions, 200 flow. Second operand has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 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 13:59:37,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:37,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 346 [2022-12-13 13:59:37,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:38,046 INFO L130 PetriNetUnfolder]: 211/456 cut-off events. [2022-12-13 13:59:38,046 INFO L131 PetriNetUnfolder]: For 367/367 co-relation queries the response was YES. [2022-12-13 13:59:38,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 456 events. 211/456 cut-off events. For 367/367 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1933 event pairs, 56 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 1442. Up to 114 conditions per place. [2022-12-13 13:59:38,047 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 49 selfloop transitions, 8 changer transitions 15/83 dead transitions. [2022-12-13 13:59:38,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 483 flow [2022-12-13 13:59:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:59:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 13:59:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1454 transitions. [2022-12-13 13:59:38,049 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42023121387283235 [2022-12-13 13:59:38,049 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1454 transitions. [2022-12-13 13:59:38,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1454 transitions. [2022-12-13 13:59:38,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:38,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1454 transitions. [2022-12-13 13:59:38,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.4) internal successors, (1454), 10 states have internal predecessors, (1454), 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 13:59:38,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:38,052 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 346.0) internal successors, (3806), 11 states have internal predecessors, (3806), 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 13:59:38,052 INFO L175 Difference]: Start difference. First operand has 70 places, 46 transitions, 200 flow. Second operand 10 states and 1454 transitions. [2022-12-13 13:59:38,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 483 flow [2022-12-13 13:59:38,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 83 transitions, 470 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 13:59:38,054 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 201 flow [2022-12-13 13:59:38,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=201, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2022-12-13 13:59:38,054 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2022-12-13 13:59:38,054 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 201 flow [2022-12-13 13:59:38,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 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 13:59:38,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:59:38,055 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 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] [2022-12-13 13:59:38,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 13:59:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 13:59:38,256 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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 13:59:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:59:38,257 INFO L85 PathProgramCache]: Analyzing trace with hash -637328464, now seen corresponding path program 29 times [2022-12-13 13:59:38,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:59:38,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738160725] [2022-12-13 13:59:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:59:38,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:59:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:59:39,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:59:39,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:59:39,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738160725] [2022-12-13 13:59:39,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738160725] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:39,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811315542] [2022-12-13 13:59:39,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:59:39,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:39,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:59:39,035 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:59:39,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 13:59:39,126 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:59:39,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:59:39,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 13:59:39,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:59:39,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:39,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:39,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:59:39,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-13 13:59:39,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:39,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2022-12-13 13:59:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:59:39,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:59:39,497 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1212 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1212) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* 4 (select .cse0 (+ c_~f~0.offset (* c_~j~0 4)))))) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2022-12-13 13:59:39,524 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1212 (Array Int Int)) (v_ArrVal_1211 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1211) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1212) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* (select .cse0 (+ c_~f~0.offset (* c_~j~0 4))) 4))) (select .cse0 (+ c_~f~0.offset (* c_~i~0 4)))))) is different from false [2022-12-13 13:59:39,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:39,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 180 [2022-12-13 13:59:39,579 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:39,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 110 [2022-12-13 13:59:39,605 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 13:59:39,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 77 [2022-12-13 13:59:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 13:59:40,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811315542] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 13:59:40,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:59:40,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 10] total 27 [2022-12-13 13:59:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150635490] [2022-12-13 13:59:40,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:59:40,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 13:59:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:59:40,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 13:59:40,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=624, Unknown=2, NotChecked=102, Total=812 [2022-12-13 13:59:40,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 346 [2022-12-13 13:59:40,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 201 flow. Second operand has 11 states, 11 states have (on average 130.54545454545453) internal successors, (1436), 11 states have internal predecessors, (1436), 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 13:59:40,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:59:40,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 346 [2022-12-13 13:59:40,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:59:40,505 INFO L130 PetriNetUnfolder]: 187/392 cut-off events. [2022-12-13 13:59:40,505 INFO L131 PetriNetUnfolder]: For 502/502 co-relation queries the response was YES. [2022-12-13 13:59:40,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 392 events. 187/392 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1618 event pairs, 50 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1303. Up to 114 conditions per place. [2022-12-13 13:59:40,507 INFO L137 encePairwiseOnDemand]: 338/346 looper letters, 0 selfloop transitions, 0 changer transitions 71/71 dead transitions. [2022-12-13 13:59:40,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 417 flow [2022-12-13 13:59:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:59:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:59:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1077 transitions. [2022-12-13 13:59:40,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3890895953757225 [2022-12-13 13:59:40,509 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1077 transitions. [2022-12-13 13:59:40,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1077 transitions. [2022-12-13 13:59:40,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:59:40,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1077 transitions. [2022-12-13 13:59:40,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.625) internal successors, (1077), 8 states have internal predecessors, (1077), 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 13:59:40,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:40,511 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 346.0) internal successors, (3114), 9 states have internal predecessors, (3114), 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 13:59:40,511 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 201 flow. Second operand 8 states and 1077 transitions. [2022-12-13 13:59:40,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 417 flow [2022-12-13 13:59:40,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 399 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-12-13 13:59:40,512 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2022-12-13 13:59:40,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2022-12-13 13:59:40,513 INFO L288 CegarLoopForPetriNet]: 45 programPoint places, 25 predicate places. [2022-12-13 13:59:40,513 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2022-12-13 13:59:40,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.54545454545453) internal successors, (1436), 11 states have internal predecessors, (1436), 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 13:59:40,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-13 13:59:40,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-13 13:59:40,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-13 13:59:40,515 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-13 13:59:40,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 13:59:40,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:59:40,717 INFO L445 BasicCegarLoop]: Path program histogram: [29, 1] [2022-12-13 13:59:40,724 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:59:40,725 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:59:40,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:59:40 BasicIcfg [2022-12-13 13:59:40,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:59:40,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:59:40,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:59:40,734 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:59:40,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:14" (3/4) ... [2022-12-13 13:59:40,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 13:59:40,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 13:59:40,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 13:59:40,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 13:59:40,761 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-12-13 13:59:40,761 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 13:59:40,762 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 13:59:40,762 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 13:59:40,790 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 13:59:40,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:59:40,790 INFO L158 Benchmark]: Toolchain (without parser) took 86808.99ms. Allocated memory was 127.9MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 89.6MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-12-13 13:59:40,791 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:59:40,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.99ms. Allocated memory is still 127.9MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 13:59:40,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.72ms. Allocated memory is still 127.9MB. Free memory was 72.7MB in the beginning and 70.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:59:40,792 INFO L158 Benchmark]: Boogie Preprocessor took 21.61ms. Allocated memory is still 127.9MB. Free memory was 70.2MB in the beginning and 68.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:59:40,792 INFO L158 Benchmark]: RCFGBuilder took 505.47ms. Allocated memory is still 127.9MB. Free memory was 68.6MB in the beginning and 94.6MB in the end (delta: -26.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2022-12-13 13:59:40,792 INFO L158 Benchmark]: TraceAbstraction took 85963.42ms. Allocated memory was 127.9MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 94.1MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-12-13 13:59:40,793 INFO L158 Benchmark]: Witness Printer took 56.93ms. Allocated memory is still 2.7GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 13:59:40,794 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 127.9MB. Free memory is still 99.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.99ms. Allocated memory is still 127.9MB. Free memory was 89.6MB in the beginning and 72.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.72ms. Allocated memory is still 127.9MB. Free memory was 72.7MB in the beginning and 70.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.61ms. Allocated memory is still 127.9MB. Free memory was 70.2MB in the beginning and 68.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 505.47ms. Allocated memory is still 127.9MB. Free memory was 68.6MB in the beginning and 94.6MB in the end (delta: -26.0MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * TraceAbstraction took 85963.42ms. Allocated memory was 127.9MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 94.1MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 56.93ms. Allocated memory is still 2.7GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 3.2MB). 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: 4.6s, 175 PlacesBefore, 45 PlacesAfterwards, 172 TransitionsBefore, 36 TransitionsAfterwards, 1266 CoEnabledTransitionPairs, 8 FixpointIterations, 108 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 26 TrivialYvCompositions, 0 ConcurrentYvCompositions, 6 ChoiceCompositions, 160 TotalNumberOfCompositions, 7979 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3811, independent: 3454, independent conditional: 0, independent unconditional: 3454, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 688, independent: 664, independent conditional: 0, independent unconditional: 664, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3811, independent: 2790, independent conditional: 0, independent unconditional: 2790, dependent: 333, dependent conditional: 0, dependent unconditional: 333, unknown: 688, unknown conditional: 0, unknown unconditional: 688] , Statistics on independence cache: Total cache size (in pairs): 202, Positive cache size: 183, Positive conditional cache size: 0, Positive unconditional cache size: 183, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 161]: 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, 215 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: 85.8s, OverallIterations: 30, TraceHistogramMax: 2, PathProgramHistogramMax: 29, EmptinessCheckTime: 0.0s, AutomataDifference: 51.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 26 mSolverCounterUnknown, 6230 SdHoareTripleChecker+Valid, 22.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5671 mSDsluCounter, 3516 SdHoareTripleChecker+Invalid, 21.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 109 IncrementalHoareTripleChecker+Unchecked, 3401 mSDsCounter, 280 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18426 IncrementalHoareTripleChecker+Invalid, 18841 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 280 mSolverCounterUnsat, 115 mSDtfsCounter, 18426 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1371 GetRequests, 807 SyntacticMatches, 2 SemanticMatches, 562 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=951occurred in iteration=11, InterpolantAutomatonStates: 281, 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: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 21.2s InterpolantComputationTime, 1868 NumberOfCodeBlocks, 1828 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 1995 ConstructedInterpolants, 97 QuantifiedInterpolants, 28847 SizeOfPredicates, 243 NumberOfNonLiveVariables, 5601 ConjunctsInSsa, 490 ConjunctsInUnsatCore, 56 InterpolantComputations, 28 PerfectInterpolantSequences, 66/127 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 13:59:40,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4878d5-78be-4809-91a6-a9f4aefc070f/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