./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 15:40:42,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:40:42,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:40:42,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:40:42,807 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:40:42,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:40:42,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:40:42,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:40:42,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:40:42,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:40:42,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:40:42,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:40:42,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:40:42,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:40:42,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:40:42,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:40:42,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:40:42,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:40:42,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:40:42,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:40:42,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:40:42,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:40:42,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:40:42,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:40:42,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:40:42,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:40:42,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:40:42,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:40:42,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:40:42,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:40:42,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:40:42,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:40:42,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:40:42,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:40:42,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:40:42,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:40:42,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:40:42,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:40:42,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:40:42,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:40:42,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:40:42,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:40:42,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:40:42,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:40:42,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:40:42,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:40:42,953 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:40:42,953 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:40:42,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:40:42,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:40:42,955 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:40:42,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:40:42,956 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:40:42,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:40:42,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:40:42,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:40:42,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:40:42,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:40:42,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:40:42,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:40:42,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:40:42,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:40:42,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:40:42,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:40:42,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:40:42,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:40:42,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:40:42,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:40:42,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:40:42,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:40:42,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:40:42,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:40:42,962 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:40:42,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:40:42,962 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:40:42,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:40:42,963 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_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fedede1a0cf545b0a275694256164e3eb4f49b22c80042adac647157728b27d [2022-11-25 15:40:43,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:40:43,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:40:43,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:40:43,346 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:40:43,347 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:40:43,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-25 15:40:46,646 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:40:46,912 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:40:46,912 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2022-11-25 15:40:46,926 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/data/e24dc6d14/d0569a6efa05471194312b56bc47d6d6/FLAG792e15a59 [2022-11-25 15:40:46,951 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/data/e24dc6d14/d0569a6efa05471194312b56bc47d6d6 [2022-11-25 15:40:46,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:40:46,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:40:46,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:40:46,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:40:46,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:40:46,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:40:46" (1/1) ... [2022-11-25 15:40:46,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db31f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:46, skipping insertion in model container [2022-11-25 15:40:46,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:40:46" (1/1) ... [2022-11-25 15:40:46,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:40:47,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:40:47,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,204 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,205 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,215 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,217 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,219 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,232 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_b8e4f676-e928-49ff-9795-ea75f6467f43/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-25 15:40:47,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:40:47,253 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:40:47,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,271 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,280 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,281 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,283 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,284 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 15:40:47,285 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 15:40:47,292 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_b8e4f676-e928-49ff-9795-ea75f6467f43/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4085,4098] [2022-11-25 15:40:47,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:40:47,313 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:40:47,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47 WrapperNode [2022-11-25 15:40:47,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:40:47,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:40:47,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:40:47,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:40:47,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,389 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2022-11-25 15:40:47,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:40:47,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:40:47,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:40:47,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:40:47,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,466 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:40:47,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:40:47,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:40:47,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:40:47,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (1/1) ... [2022-11-25 15:40:47,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:40:47,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:40:47,544 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:40:47,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:40:47,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:40:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:40:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:40:47,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:40:47,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 15:40:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 15:40:47,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 15:40:47,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 15:40:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 15:40:47,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 15:40:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:40:47,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 15:40:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 15:40:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:40:47,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:40:47,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:40:47,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:40:47,609 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:40:47,824 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:40:47,826 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:40:48,465 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:40:48,697 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:40:48,698 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 15:40:48,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:40:48 BoogieIcfgContainer [2022-11-25 15:40:48,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:40:48,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:40:48,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:40:48,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:40:48,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:40:46" (1/3) ... [2022-11-25 15:40:48,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b53ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:40:48, skipping insertion in model container [2022-11-25 15:40:48,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:40:47" (2/3) ... [2022-11-25 15:40:48,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b53ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:40:48, skipping insertion in model container [2022-11-25 15:40:48,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:40:48" (3/3) ... [2022-11-25 15:40:48,719 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-11-25 15:40:48,732 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:40:48,745 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:40:48,745 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:40:48,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:40:48,882 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 15:40:48,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 279 transitions, 582 flow [2022-11-25 15:40:49,102 INFO L130 PetriNetUnfolder]: 25/276 cut-off events. [2022-11-25 15:40:49,102 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:40:49,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 276 events. 25/276 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 236. Up to 4 conditions per place. [2022-11-25 15:40:49,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 279 transitions, 582 flow [2022-11-25 15:40:49,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 265 transitions, 548 flow [2022-11-25 15:40:49,127 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:40:49,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 265 transitions, 548 flow [2022-11-25 15:40:49,161 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 265 transitions, 548 flow [2022-11-25 15:40:49,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 265 transitions, 548 flow [2022-11-25 15:40:49,258 INFO L130 PetriNetUnfolder]: 25/265 cut-off events. [2022-11-25 15:40:49,258 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:40:49,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 265 events. 25/265 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 236. Up to 4 conditions per place. [2022-11-25 15:40:49,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 2898 [2022-11-25 15:41:02,820 INFO L134 LiptonReduction]: Checked pairs total: 4284 [2022-11-25 15:41:02,820 INFO L136 LiptonReduction]: Total number of compositions: 280 [2022-11-25 15:41:02,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:41:02,853 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;@2703174a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:41:02,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-25 15:41:02,880 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2022-11-25 15:41:02,887 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:41:02,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:02,888 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:41:02,889 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)] === [2022-11-25 15:41:02,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash 20247101, now seen corresponding path program 1 times [2022-11-25 15:41:02,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:02,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730375307] [2022-11-25 15:41:02,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:02,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:41:03,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:03,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730375307] [2022-11-25 15:41:03,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730375307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:41:03,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:41:03,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:41:03,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714901341] [2022-11-25 15:41:03,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:41:03,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:41:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:41:03,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:41:03,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 559 [2022-11-25 15:41:03,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:03,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:03,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 559 [2022-11-25 15:41:03,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:03,816 INFO L130 PetriNetUnfolder]: 617/879 cut-off events. [2022-11-25 15:41:03,816 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-25 15:41:03,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 879 events. 617/879 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2706 event pairs, 169 based on Foata normal form. 36/706 useless extension candidates. Maximal degree in co-relation 1608. Up to 566 conditions per place. [2022-11-25 15:41:03,829 INFO L137 encePairwiseOnDemand]: 553/559 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2022-11-25 15:41:03,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 212 flow [2022-11-25 15:41:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:41:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:41:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2022-11-25 15:41:03,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4669051878354204 [2022-11-25 15:41:03,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2022-11-25 15:41:03,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2022-11-25 15:41:03,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:03,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2022-11-25 15:41:03,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:03,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:03,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:03,888 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 84 flow. Second operand 3 states and 783 transitions. [2022-11-25 15:41:03,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 212 flow [2022-11-25 15:41:03,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 47 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 15:41:03,898 INFO L231 Difference]: Finished difference. Result has 32 places, 34 transitions, 91 flow [2022-11-25 15:41:03,900 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=34} [2022-11-25 15:41:03,904 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2022-11-25 15:41:03,905 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 34 transitions, 91 flow [2022-11-25 15:41:03,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.33333333333334) internal successors, (754), 3 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:03,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:03,906 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] [2022-11-25 15:41:03,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:41:03,907 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)] === [2022-11-25 15:41:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1049770125, now seen corresponding path program 1 times [2022-11-25 15:41:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:03,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752061052] [2022-11-25 15:41:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:03,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:04,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:41:04,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:04,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752061052] [2022-11-25 15:41:04,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752061052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:41:04,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:41:04,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:41:04,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656850710] [2022-11-25 15:41:04,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:41:04,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:41:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:41:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:41:04,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 559 [2022-11-25 15:41:04,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 34 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:04,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:04,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 559 [2022-11-25 15:41:04,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:04,663 INFO L130 PetriNetUnfolder]: 674/999 cut-off events. [2022-11-25 15:41:04,664 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2022-11-25 15:41:04,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2357 conditions, 999 events. 674/999 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3316 event pairs, 450 based on Foata normal form. 52/837 useless extension candidates. Maximal degree in co-relation 901. Up to 880 conditions per place. [2022-11-25 15:41:04,671 INFO L137 encePairwiseOnDemand]: 550/559 looper letters, 33 selfloop transitions, 2 changer transitions 27/62 dead transitions. [2022-11-25 15:41:04,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 277 flow [2022-11-25 15:41:04,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:41:04,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:41:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1236 transitions. [2022-11-25 15:41:04,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44221824686940964 [2022-11-25 15:41:04,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1236 transitions. [2022-11-25 15:41:04,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1236 transitions. [2022-11-25 15:41:04,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:04,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1236 transitions. [2022-11-25 15:41:04,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:04,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 559.0) internal successors, (3354), 6 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:04,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 559.0) internal successors, (3354), 6 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:04,690 INFO L175 Difference]: Start difference. First operand has 32 places, 34 transitions, 91 flow. Second operand 5 states and 1236 transitions. [2022-11-25 15:41:04,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 277 flow [2022-11-25 15:41:04,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 62 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:41:04,692 INFO L231 Difference]: Finished difference. Result has 38 places, 35 transitions, 118 flow [2022-11-25 15:41:04,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=35} [2022-11-25 15:41:04,694 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2022-11-25 15:41:04,694 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 35 transitions, 118 flow [2022-11-25 15:41:04,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:04,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:04,695 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] [2022-11-25 15:41:04,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:41:04,696 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)] === [2022-11-25 15:41:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:04,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1143767824, now seen corresponding path program 1 times [2022-11-25 15:41:04,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:04,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459345807] [2022-11-25 15:41:04,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:04,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:41:04,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:04,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459345807] [2022-11-25 15:41:04,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459345807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:41:04,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:41:04,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:41:04,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256392053] [2022-11-25 15:41:04,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:41:04,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:41:04,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:04,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:41:04,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:41:05,021 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 559 [2022-11-25 15:41:05,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 35 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:05,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:05,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 559 [2022-11-25 15:41:05,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:05,370 INFO L130 PetriNetUnfolder]: 1008/1500 cut-off events. [2022-11-25 15:41:05,370 INFO L131 PetriNetUnfolder]: For 623/623 co-relation queries the response was YES. [2022-11-25 15:41:05,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 1500 events. 1008/1500 cut-off events. For 623/623 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5645 event pairs, 706 based on Foata normal form. 68/1281 useless extension candidates. Maximal degree in co-relation 3951. Up to 881 conditions per place. [2022-11-25 15:41:05,379 INFO L137 encePairwiseOnDemand]: 553/559 looper letters, 34 selfloop transitions, 2 changer transitions 39/75 dead transitions. [2022-11-25 15:41:05,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 75 transitions, 388 flow [2022-11-25 15:41:05,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:41:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:41:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1246 transitions. [2022-11-25 15:41:05,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44579606440071556 [2022-11-25 15:41:05,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1246 transitions. [2022-11-25 15:41:05,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1246 transitions. [2022-11-25 15:41:05,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:05,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1246 transitions. [2022-11-25 15:41:05,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.2) internal successors, (1246), 5 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:05,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 559.0) internal successors, (3354), 6 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:05,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 559.0) internal successors, (3354), 6 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:05,397 INFO L175 Difference]: Start difference. First operand has 38 places, 35 transitions, 118 flow. Second operand 5 states and 1246 transitions. [2022-11-25 15:41:05,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 75 transitions, 388 flow [2022-11-25 15:41:05,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 75 transitions, 370 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-25 15:41:05,401 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 130 flow [2022-11-25 15:41:05,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2022-11-25 15:41:05,402 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2022-11-25 15:41:05,402 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 130 flow [2022-11-25 15:41:05,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:05,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:05,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:41:05,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:41:05,404 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)] === [2022-11-25 15:41:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:05,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1638438462, now seen corresponding path program 1 times [2022-11-25 15:41:05,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:05,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763803940] [2022-11-25 15:41:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:41:05,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:05,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763803940] [2022-11-25 15:41:05,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763803940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:41:05,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:41:05,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:41:05,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82569532] [2022-11-25 15:41:05,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:41:05,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:41:05,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:41:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:41:05,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 559 [2022-11-25 15:41:05,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:05,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:05,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 559 [2022-11-25 15:41:05,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:06,107 INFO L130 PetriNetUnfolder]: 1060/1544 cut-off events. [2022-11-25 15:41:06,107 INFO L131 PetriNetUnfolder]: For 859/859 co-relation queries the response was YES. [2022-11-25 15:41:06,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4449 conditions, 1544 events. 1060/1544 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5742 event pairs, 733 based on Foata normal form. 76/1269 useless extension candidates. Maximal degree in co-relation 4426. Up to 882 conditions per place. [2022-11-25 15:41:06,117 INFO L137 encePairwiseOnDemand]: 553/559 looper letters, 35 selfloop transitions, 2 changer transitions 23/60 dead transitions. [2022-11-25 15:41:06,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 60 transitions, 333 flow [2022-11-25 15:41:06,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:41:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:41:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 993 transitions. [2022-11-25 15:41:06,122 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44409660107334525 [2022-11-25 15:41:06,123 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 993 transitions. [2022-11-25 15:41:06,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 993 transitions. [2022-11-25 15:41:06,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:06,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 993 transitions. [2022-11-25 15:41:06,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 248.25) internal successors, (993), 4 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 559.0) internal successors, (2795), 5 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,135 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 559.0) internal successors, (2795), 5 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,135 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 130 flow. Second operand 4 states and 993 transitions. [2022-11-25 15:41:06,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 60 transitions, 333 flow [2022-11-25 15:41:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 297 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-11-25 15:41:06,142 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 128 flow [2022-11-25 15:41:06,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, 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=4, PETRI_FLOW=128, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2022-11-25 15:41:06,143 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2022-11-25 15:41:06,144 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 128 flow [2022-11-25 15:41:06,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:06,145 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] [2022-11-25 15:41:06,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:41:06,146 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)] === [2022-11-25 15:41:06,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:06,147 INFO L85 PathProgramCache]: Analyzing trace with hash 388648397, now seen corresponding path program 1 times [2022-11-25 15:41:06,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:06,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278220533] [2022-11-25 15:41:06,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:06,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:06,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278220533] [2022-11-25 15:41:06,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278220533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:41:06,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:41:06,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:41:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601455757] [2022-11-25 15:41:06,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:41:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:41:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:06,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:41:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:41:06,379 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 559 [2022-11-25 15:41:06,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:06,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 559 [2022-11-25 15:41:06,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:06,757 INFO L130 PetriNetUnfolder]: 1129/1607 cut-off events. [2022-11-25 15:41:06,758 INFO L131 PetriNetUnfolder]: For 411/411 co-relation queries the response was YES. [2022-11-25 15:41:06,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 1607 events. 1129/1607 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5828 event pairs, 396 based on Foata normal form. 1/1215 useless extension candidates. Maximal degree in co-relation 4259. Up to 837 conditions per place. [2022-11-25 15:41:06,768 INFO L137 encePairwiseOnDemand]: 556/559 looper letters, 53 selfloop transitions, 2 changer transitions 6/61 dead transitions. [2022-11-25 15:41:06,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 61 transitions, 327 flow [2022-11-25 15:41:06,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:41:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:41:06,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 793 transitions. [2022-11-25 15:41:06,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2022-11-25 15:41:06,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 793 transitions. [2022-11-25 15:41:06,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 793 transitions. [2022-11-25 15:41:06,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:06,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 793 transitions. [2022-11-25 15:41:06,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 264.3333333333333) internal successors, (793), 3 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,780 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 128 flow. Second operand 3 states and 793 transitions. [2022-11-25 15:41:06,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 61 transitions, 327 flow [2022-11-25 15:41:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 61 transitions, 323 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:41:06,784 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 138 flow [2022-11-25 15:41:06,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2022-11-25 15:41:06,785 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2022-11-25 15:41:06,786 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 138 flow [2022-11-25 15:41:06,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:06,787 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] [2022-11-25 15:41:06,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:41:06,787 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)] === [2022-11-25 15:41:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2045541144, now seen corresponding path program 1 times [2022-11-25 15:41:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:06,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068888029] [2022-11-25 15:41:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:06,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:06,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:06,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068888029] [2022-11-25 15:41:06,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068888029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:41:06,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:41:06,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:41:06,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389197891] [2022-11-25 15:41:06,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:41:06,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:41:06,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:06,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:41:06,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:41:06,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 559 [2022-11-25 15:41:06,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:06,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:06,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 559 [2022-11-25 15:41:06,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:07,306 INFO L130 PetriNetUnfolder]: 1230/1752 cut-off events. [2022-11-25 15:41:07,307 INFO L131 PetriNetUnfolder]: For 552/552 co-relation queries the response was YES. [2022-11-25 15:41:07,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4821 conditions, 1752 events. 1230/1752 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6550 event pairs, 440 based on Foata normal form. 0/1339 useless extension candidates. Maximal degree in co-relation 4797. Up to 940 conditions per place. [2022-11-25 15:41:07,319 INFO L137 encePairwiseOnDemand]: 556/559 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-11-25 15:41:07,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 296 flow [2022-11-25 15:41:07,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:41:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:41:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2022-11-25 15:41:07,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46213476446034585 [2022-11-25 15:41:07,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2022-11-25 15:41:07,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2022-11-25 15:41:07,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:07,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2022-11-25 15:41:07,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:07,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:07,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 559.0) internal successors, (2236), 4 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:07,331 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 138 flow. Second operand 3 states and 775 transitions. [2022-11-25 15:41:07,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 296 flow [2022-11-25 15:41:07,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:41:07,335 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 152 flow [2022-11-25 15:41:07,335 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2022-11-25 15:41:07,336 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2022-11-25 15:41:07,336 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 152 flow [2022-11-25 15:41:07,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:07,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:07,337 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] [2022-11-25 15:41:07,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:41:07,338 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)] === [2022-11-25 15:41:07,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash -95255438, now seen corresponding path program 1 times [2022-11-25 15:41:07,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:07,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180019046] [2022-11-25 15:41:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:07,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:07,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180019046] [2022-11-25 15:41:07,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180019046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:41:07,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895160095] [2022-11-25 15:41:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:07,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:07,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:41:07,682 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:41:07,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:41:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:07,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:41:07,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:41:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:07,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:41:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:08,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895160095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:41:08,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:41:08,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-11-25 15:41:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436106201] [2022-11-25 15:41:08,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:41:08,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 15:41:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:41:08,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:41:08,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 559 [2022-11-25 15:41:08,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 152 flow. Second operand has 8 states, 8 states have (on average 238.375) internal successors, (1907), 8 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:08,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:08,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 559 [2022-11-25 15:41:08,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:09,471 INFO L130 PetriNetUnfolder]: 3375/4758 cut-off events. [2022-11-25 15:41:09,471 INFO L131 PetriNetUnfolder]: For 3794/3794 co-relation queries the response was YES. [2022-11-25 15:41:09,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14588 conditions, 4758 events. 3375/4758 cut-off events. For 3794/3794 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 21670 event pairs, 471 based on Foata normal form. 174/4297 useless extension candidates. Maximal degree in co-relation 14563. Up to 1269 conditions per place. [2022-11-25 15:41:09,503 INFO L137 encePairwiseOnDemand]: 552/559 looper letters, 102 selfloop transitions, 11 changer transitions 22/135 dead transitions. [2022-11-25 15:41:09,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 135 transitions, 799 flow [2022-11-25 15:41:09,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:41:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 15:41:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1747 transitions. [2022-11-25 15:41:09,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44646051622795807 [2022-11-25 15:41:09,512 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1747 transitions. [2022-11-25 15:41:09,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1747 transitions. [2022-11-25 15:41:09,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:09,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1747 transitions. [2022-11-25 15:41:09,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 249.57142857142858) internal successors, (1747), 7 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:09,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:09,531 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 559.0) internal successors, (4472), 8 states have internal predecessors, (4472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:09,531 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 152 flow. Second operand 7 states and 1747 transitions. [2022-11-25 15:41:09,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 135 transitions, 799 flow [2022-11-25 15:41:09,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 135 transitions, 779 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:41:09,543 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 252 flow [2022-11-25 15:41:09,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2022-11-25 15:41:09,544 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2022-11-25 15:41:09,544 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 252 flow [2022-11-25 15:41:09,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 238.375) internal successors, (1907), 8 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:09,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:09,547 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] [2022-11-25 15:41:09,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:41:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:09,755 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)] === [2022-11-25 15:41:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash 123048874, now seen corresponding path program 2 times [2022-11-25 15:41:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:09,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266394071] [2022-11-25 15:41:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:09,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:10,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266394071] [2022-11-25 15:41:10,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266394071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:41:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163807279] [2022-11-25 15:41:10,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:41:10,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:41:10,420 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:41:10,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:41:10,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:41:10,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:41:10,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 15:41:10,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:41:11,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 15:41:11,019 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 19 treesize of output 21 [2022-11-25 15:41:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:11,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:41:11,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 38 [2022-11-25 15:41:11,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2022-11-25 15:41:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:11,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163807279] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:41:11,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:41:11,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2022-11-25 15:41:11,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234824990] [2022-11-25 15:41:11,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:41:11,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 15:41:11,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 15:41:11,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=231, Unknown=1, NotChecked=0, Total=306 [2022-11-25 15:41:11,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 559 [2022-11-25 15:41:11,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 252 flow. Second operand has 18 states, 18 states have (on average 215.16666666666666) internal successors, (3873), 18 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:11,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:11,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 559 [2022-11-25 15:41:11,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:13,762 INFO L130 PetriNetUnfolder]: 4981/6976 cut-off events. [2022-11-25 15:41:13,762 INFO L131 PetriNetUnfolder]: For 10911/10911 co-relation queries the response was YES. [2022-11-25 15:41:13,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24252 conditions, 6976 events. 4981/6976 cut-off events. For 10911/10911 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 32611 event pairs, 1227 based on Foata normal form. 72/6107 useless extension candidates. Maximal degree in co-relation 24222. Up to 2301 conditions per place. [2022-11-25 15:41:13,815 INFO L137 encePairwiseOnDemand]: 551/559 looper letters, 75 selfloop transitions, 11 changer transitions 57/143 dead transitions. [2022-11-25 15:41:13,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 143 transitions, 981 flow [2022-11-25 15:41:13,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:41:13,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-25 15:41:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2022 transitions. [2022-11-25 15:41:13,824 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4019081693500298 [2022-11-25 15:41:13,824 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2022 transitions. [2022-11-25 15:41:13,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2022 transitions. [2022-11-25 15:41:13,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:13,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2022 transitions. [2022-11-25 15:41:13,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.66666666666666) internal successors, (2022), 9 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:13,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 559.0) internal successors, (5590), 10 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:13,847 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 559.0) internal successors, (5590), 10 states have internal predecessors, (5590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:13,848 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 252 flow. Second operand 9 states and 2022 transitions. [2022-11-25 15:41:13,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 143 transitions, 981 flow [2022-11-25 15:41:13,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 143 transitions, 981 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 15:41:13,863 INFO L231 Difference]: Finished difference. Result has 65 places, 46 transitions, 264 flow [2022-11-25 15:41:13,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2022-11-25 15:41:13,864 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 30 predicate places. [2022-11-25 15:41:13,864 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 264 flow [2022-11-25 15:41:13,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 215.16666666666666) internal successors, (3873), 18 states have internal predecessors, (3873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:13,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:13,867 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] [2022-11-25 15:41:13,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:41:14,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:14,074 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)] === [2022-11-25 15:41:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:14,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1935506502, now seen corresponding path program 3 times [2022-11-25 15:41:14,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:14,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630593027] [2022-11-25 15:41:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:14,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:14,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:14,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630593027] [2022-11-25 15:41:14,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630593027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:41:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474743546] [2022-11-25 15:41:14,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:41:14,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:14,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:41:14,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:41:14,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:41:14,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 15:41:14,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:41:14,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 15:41:14,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:41:14,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2022-11-25 15:41:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:15,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:41:15,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2022-11-25 15:41:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:15,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474743546] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:41:15,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:41:15,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-11-25 15:41:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545252066] [2022-11-25 15:41:15,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:41:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 15:41:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 15:41:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:41:16,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 559 [2022-11-25 15:41:16,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 264 flow. Second operand has 22 states, 22 states have (on average 208.1818181818182) internal successors, (4580), 22 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:16,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:16,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 559 [2022-11-25 15:41:16,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:18,890 INFO L130 PetriNetUnfolder]: 5431/7850 cut-off events. [2022-11-25 15:41:18,890 INFO L131 PetriNetUnfolder]: For 19413/19413 co-relation queries the response was YES. [2022-11-25 15:41:18,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27351 conditions, 7850 events. 5431/7850 cut-off events. For 19413/19413 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 40819 event pairs, 751 based on Foata normal form. 566/7298 useless extension candidates. Maximal degree in co-relation 14550. Up to 2233 conditions per place. [2022-11-25 15:41:18,953 INFO L137 encePairwiseOnDemand]: 547/559 looper letters, 151 selfloop transitions, 29 changer transitions 78/258 dead transitions. [2022-11-25 15:41:18,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 258 transitions, 1946 flow [2022-11-25 15:41:18,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 15:41:18,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-25 15:41:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5126 transitions. [2022-11-25 15:41:18,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.38208109719737626 [2022-11-25 15:41:18,968 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5126 transitions. [2022-11-25 15:41:18,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5126 transitions. [2022-11-25 15:41:18,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:18,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5126 transitions. [2022-11-25 15:41:18,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 213.58333333333334) internal successors, (5126), 24 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:19,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 559.0) internal successors, (13975), 25 states have internal predecessors, (13975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:19,024 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 559.0) internal successors, (13975), 25 states have internal predecessors, (13975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:19,024 INFO L175 Difference]: Start difference. First operand has 65 places, 46 transitions, 264 flow. Second operand 24 states and 5126 transitions. [2022-11-25 15:41:19,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 258 transitions, 1946 flow [2022-11-25 15:41:19,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 258 transitions, 1809 flow, removed 10 selfloop flow, removed 10 redundant places. [2022-11-25 15:41:19,054 INFO L231 Difference]: Finished difference. Result has 95 places, 70 transitions, 616 flow [2022-11-25 15:41:19,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=616, PETRI_PLACES=95, PETRI_TRANSITIONS=70} [2022-11-25 15:41:19,056 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 60 predicate places. [2022-11-25 15:41:19,056 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 70 transitions, 616 flow [2022-11-25 15:41:19,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 208.1818181818182) internal successors, (4580), 22 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:19,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:19,058 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] [2022-11-25 15:41:19,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:41:19,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:19,271 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)] === [2022-11-25 15:41:19,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:19,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1973589884, now seen corresponding path program 4 times [2022-11-25 15:41:19,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:19,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009609843] [2022-11-25 15:41:19,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:19,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:19,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:19,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009609843] [2022-11-25 15:41:19,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009609843] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:41:19,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165140489] [2022-11-25 15:41:19,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:41:19,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:19,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:41:19,938 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:41:19,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:41:20,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:41:20,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:41:20,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 15:41:20,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:41:20,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2022-11-25 15:41:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:20,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:41:20,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2022-11-25 15:41:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:41:21,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165140489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:41:21,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:41:21,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-11-25 15:41:21,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693393779] [2022-11-25 15:41:21,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:41:21,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 15:41:21,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 15:41:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2022-11-25 15:41:22,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 559 [2022-11-25 15:41:22,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 70 transitions, 616 flow. Second operand has 22 states, 22 states have (on average 206.54545454545453) internal successors, (4544), 22 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:22,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:22,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 559 [2022-11-25 15:41:22,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:24,327 INFO L130 PetriNetUnfolder]: 3583/5183 cut-off events. [2022-11-25 15:41:24,328 INFO L131 PetriNetUnfolder]: For 35982/35982 co-relation queries the response was YES. [2022-11-25 15:41:24,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24400 conditions, 5183 events. 3583/5183 cut-off events. For 35982/35982 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 24605 event pairs, 1911 based on Foata normal form. 56/4673 useless extension candidates. Maximal degree in co-relation 20078. Up to 2451 conditions per place. [2022-11-25 15:41:24,380 INFO L137 encePairwiseOnDemand]: 549/559 looper letters, 48 selfloop transitions, 11 changer transitions 101/160 dead transitions. [2022-11-25 15:41:24,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 160 transitions, 1559 flow [2022-11-25 15:41:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 15:41:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-25 15:41:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3773 transitions. [2022-11-25 15:41:24,392 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3749751540449215 [2022-11-25 15:41:24,392 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3773 transitions. [2022-11-25 15:41:24,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3773 transitions. [2022-11-25 15:41:24,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:24,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3773 transitions. [2022-11-25 15:41:24,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 209.61111111111111) internal successors, (3773), 18 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:24,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 559.0) internal successors, (10621), 19 states have internal predecessors, (10621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:24,421 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 559.0) internal successors, (10621), 19 states have internal predecessors, (10621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:24,422 INFO L175 Difference]: Start difference. First operand has 95 places, 70 transitions, 616 flow. Second operand 18 states and 3773 transitions. [2022-11-25 15:41:24,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 160 transitions, 1559 flow [2022-11-25 15:41:24,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 160 transitions, 1466 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-11-25 15:41:24,606 INFO L231 Difference]: Finished difference. Result has 102 places, 45 transitions, 321 flow [2022-11-25 15:41:24,608 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=321, PETRI_PLACES=102, PETRI_TRANSITIONS=45} [2022-11-25 15:41:24,610 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 67 predicate places. [2022-11-25 15:41:24,610 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 45 transitions, 321 flow [2022-11-25 15:41:24,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 206.54545454545453) internal successors, (4544), 22 states have internal predecessors, (4544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:24,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:41:24,612 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 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] [2022-11-25 15:41:24,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:41:24,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 15:41:24,819 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)] === [2022-11-25 15:41:24,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:41:24,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1273209171, now seen corresponding path program 5 times [2022-11-25 15:41:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:41:24,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166827638] [2022-11-25 15:41:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:41:24,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:41:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:41:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 15:41:25,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:41:25,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166827638] [2022-11-25 15:41:25,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166827638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:41:25,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818461676] [2022-11-25 15:41:25,420 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 15:41:25,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:25,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:41:25,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:41:25,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:41:25,626 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-25 15:41:25,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:41:25,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:41:25,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:41:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:41:25,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:41:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:41:25,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818461676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:41:25,718 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:41:25,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 11 [2022-11-25 15:41:25,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45782078] [2022-11-25 15:41:25,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:41:25,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:41:25,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:41:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:41:25,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:41:26,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 559 [2022-11-25 15:41:26,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 45 transitions, 321 flow. Second operand has 11 states, 11 states have (on average 221.72727272727272) internal successors, (2439), 11 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:26,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:41:26,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 559 [2022-11-25 15:41:26,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:41:26,228 INFO L130 PetriNetUnfolder]: 77/142 cut-off events. [2022-11-25 15:41:26,229 INFO L131 PetriNetUnfolder]: For 697/697 co-relation queries the response was YES. [2022-11-25 15:41:26,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 142 events. 77/142 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 295 event pairs, 31 based on Foata normal form. 50/164 useless extension candidates. Maximal degree in co-relation 580. Up to 81 conditions per place. [2022-11-25 15:41:26,230 INFO L137 encePairwiseOnDemand]: 551/559 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2022-11-25 15:41:26,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 40 transitions, 400 flow [2022-11-25 15:41:26,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 15:41:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 15:41:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1763 transitions. [2022-11-25 15:41:26,241 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2022-11-25 15:41:26,241 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1763 transitions. [2022-11-25 15:41:26,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1763 transitions. [2022-11-25 15:41:26,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:41:26,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1763 transitions. [2022-11-25 15:41:26,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 220.375) internal successors, (1763), 8 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:26,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 559.0) internal successors, (5031), 9 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:26,257 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 559.0) internal successors, (5031), 9 states have internal predecessors, (5031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:26,257 INFO L175 Difference]: Start difference. First operand has 102 places, 45 transitions, 321 flow. Second operand 8 states and 1763 transitions. [2022-11-25 15:41:26,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 40 transitions, 400 flow [2022-11-25 15:41:26,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 229 flow, removed 53 selfloop flow, removed 37 redundant places. [2022-11-25 15:41:26,263 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2022-11-25 15:41:26,263 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=559, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2022-11-25 15:41:26,265 INFO L288 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2022-11-25 15:41:26,265 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2022-11-25 15:41:26,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 221.72727272727272) internal successors, (2439), 11 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:41:26,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-25 15:41:26,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-25 15:41:26,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-25 15:41:26,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-25 15:41:26,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:41:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:41:26,478 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1] [2022-11-25 15:41:26,481 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 15:41:26,481 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 15:41:26,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 03:41:26 BasicIcfg [2022-11-25 15:41:26,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 15:41:26,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:41:26,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:41:26,486 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:41:26,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:40:48" (3/4) ... [2022-11-25 15:41:26,489 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 15:41:26,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 15:41:26,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 15:41:26,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 15:41:26,499 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2022-11-25 15:41:26,500 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 15:41:26,500 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 15:41:26,500 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 15:41:26,555 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:41:26,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:41:26,556 INFO L158 Benchmark]: Toolchain (without parser) took 39596.27ms. Allocated memory was 130.0MB in the beginning and 1.1GB in the end (delta: 941.6MB). Free memory was 86.1MB in the beginning and 713.3MB in the end (delta: -627.3MB). Peak memory consumption was 316.5MB. Max. memory is 16.1GB. [2022-11-25 15:41:26,556 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 71.0MB in the beginning and 70.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:41:26,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.37ms. Allocated memory is still 130.0MB. Free memory was 85.7MB in the beginning and 71.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 15:41:26,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.93ms. Allocated memory is still 130.0MB. Free memory was 71.4MB in the beginning and 68.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:41:26,557 INFO L158 Benchmark]: Boogie Preprocessor took 79.33ms. Allocated memory is still 130.0MB. Free memory was 68.9MB in the beginning and 66.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:41:26,558 INFO L158 Benchmark]: RCFGBuilder took 1230.78ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 66.8MB in the beginning and 106.9MB in the end (delta: -40.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-11-25 15:41:26,558 INFO L158 Benchmark]: TraceAbstraction took 37776.74ms. Allocated memory was 176.2MB in the beginning and 1.1GB in the end (delta: 895.5MB). Free memory was 105.9MB in the beginning and 718.6MB in the end (delta: -612.7MB). Peak memory consumption was 282.7MB. Max. memory is 16.1GB. [2022-11-25 15:41:26,559 INFO L158 Benchmark]: Witness Printer took 70.00ms. Allocated memory is still 1.1GB. Free memory was 718.6MB in the beginning and 713.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 15:41:26,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 130.0MB. Free memory was 71.0MB in the beginning and 70.9MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.37ms. Allocated memory is still 130.0MB. Free memory was 85.7MB in the beginning and 71.4MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.93ms. Allocated memory is still 130.0MB. Free memory was 71.4MB in the beginning and 68.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.33ms. Allocated memory is still 130.0MB. Free memory was 68.9MB in the beginning and 66.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1230.78ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 66.8MB in the beginning and 106.9MB in the end (delta: -40.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * TraceAbstraction took 37776.74ms. Allocated memory was 176.2MB in the beginning and 1.1GB in the end (delta: 895.5MB). Free memory was 105.9MB in the beginning and 718.6MB in the end (delta: -612.7MB). Peak memory consumption was 282.7MB. Max. memory is 16.1GB. * Witness Printer took 70.00ms. Allocated memory is still 1.1GB. Free memory was 718.6MB in the beginning and 713.3MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.7s, 250 PlacesBefore, 35 PlacesAfterwards, 265 TransitionsBefore, 33 TransitionsAfterwards, 2898 CoEnabledTransitionPairs, 7 FixpointIterations, 164 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 40 TrivialYvCompositions, 15 ConcurrentYvCompositions, 17 ChoiceCompositions, 280 TotalNumberOfCompositions, 4284 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3072, independent: 2982, independent conditional: 0, independent unconditional: 2982, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2167, independent: 2135, independent conditional: 0, independent unconditional: 2135, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2167, independent: 2133, independent conditional: 0, independent unconditional: 2133, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 174, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 156, dependent conditional: 0, dependent unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3072, independent: 847, independent conditional: 0, independent unconditional: 847, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 2167, unknown conditional: 0, unknown unconditional: 2167] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 156]: 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, 301 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: 37.6s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 13.9s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 3339 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2964 mSDsluCounter, 4408 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4346 mSDsCounter, 202 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6080 IncrementalHoareTripleChecker+Invalid, 6293 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 202 mSolverCounterUnsat, 62 mSDtfsCounter, 6080 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 408 GetRequests, 281 SyntacticMatches, 4 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=616occurred in iteration=9, InterpolantAutomatonStates: 89, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 465 NumberOfCodeBlocks, 461 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 602 ConstructedInterpolants, 3 QuantifiedInterpolants, 3429 SizeOfPredicates, 71 NumberOfNonLiveVariables, 2057 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 97/136 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! [2022-11-25 15:41:26,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8e4f676-e928-49ff-9795-ea75f6467f43/bin/uautomizer-ZsLfNo2U6R/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