./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/08_rand_cas.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc --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 adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 --- 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-5e519f3 [2022-11-02 20:57:39,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:57:39,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:57:39,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:57:39,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:57:39,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:57:39,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:57:39,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:57:39,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:57:39,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:57:39,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:57:39,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:57:39,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:57:39,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:57:39,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:57:39,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:57:39,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:57:39,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:57:39,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:57:39,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:57:39,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:57:39,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:57:39,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:57:39,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:57:39,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:57:39,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:57:39,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:57:39,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:57:39,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:57:39,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:57:39,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:57:39,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:57:39,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:57:39,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:57:39,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:57:39,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:57:39,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:57:39,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:57:39,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:57:39,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:57:39,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:57:39,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:57:39,488 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:57:39,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:57:39,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:57:39,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:57:39,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:57:39,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:57:39,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:57:39,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:57:39,492 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:57:39,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:57:39,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:57:39,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:57:39,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:57:39,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:57:39,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:57:39,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:57:39,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:57:39,495 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:57:39,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:57:39,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:57:39,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:57:39,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:57:39,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:57:39,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:57:39,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:39,498 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:57:39,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:57:39,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:57:39,499 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:57:39,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:57:39,501 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:57:39,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:57:39,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:57:39,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adb74bb4036ab42451aee4c4c2c855416fb34747e80c1114ce822e44c6b19376 [2022-11-02 20:57:39,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:57:39,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:57:39,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:57:39,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:57:39,935 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:57:39,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-11-02 20:57:40,042 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/data/d38004cfe/64011a63ab604e65938e519918cdbdf6/FLAG87ac9010b [2022-11-02 20:57:40,842 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:57:40,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/sv-benchmarks/c/pthread-ext/08_rand_cas.i [2022-11-02 20:57:40,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/data/d38004cfe/64011a63ab604e65938e519918cdbdf6/FLAG87ac9010b [2022-11-02 20:57:41,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/data/d38004cfe/64011a63ab604e65938e519918cdbdf6 [2022-11-02 20:57:41,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:57:41,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:57:41,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:41,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:57:41,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:57:41,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:41,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b1588e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41, skipping insertion in model container [2022-11-02 20:57:41,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:41,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:57:41,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:57:41,748 WARN L230 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_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-11-02 20:57:41,757 WARN L230 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_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-11-02 20:57:41,760 WARN L230 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_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-11-02 20:57:41,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:41,787 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:57:41,854 WARN L230 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_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30697,30710] [2022-11-02 20:57:41,862 WARN L230 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_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/sv-benchmarks/c/pthread-ext/08_rand_cas.i[30970,30983] [2022-11-02 20:57:41,868 WARN L230 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_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/sv-benchmarks/c/pthread-ext/08_rand_cas.i[31233,31246] [2022-11-02 20:57:41,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:57:41,926 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:57:41,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41 WrapperNode [2022-11-02 20:57:41,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:57:41,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:41,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:57:41,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:57:41,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:41,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,025 INFO L138 Inliner]: procedures = 176, calls = 34, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 141 [2022-11-02 20:57:42,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:57:42,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:57:42,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:57:42,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:57:42,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,057 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:57:42,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:57:42,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:57:42,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:57:42,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (1/1) ... [2022-11-02 20:57:42,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:57:42,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:42,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:57:42,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23a65f3d-4d66-4593-a8dd-95a67dd0e90c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:57:42,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:57:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:57:42,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:57:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:57:42,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:57:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:57:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:57:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:57:42,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:57:42,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:57:42,174 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:57:42,436 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:57:42,438 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:57:42,746 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:57:42,863 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:57:42,876 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:57:42,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:42 BoogieIcfgContainer [2022-11-02 20:57:42,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:57:42,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:57:42,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:57:42,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:57:42,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:57:41" (1/3) ... [2022-11-02 20:57:42,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc3c1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:42, skipping insertion in model container [2022-11-02 20:57:42,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:57:41" (2/3) ... [2022-11-02 20:57:42,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc3c1b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:57:42, skipping insertion in model container [2022-11-02 20:57:42,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:57:42" (3/3) ... [2022-11-02 20:57:42,893 INFO L112 eAbstractionObserver]: Analyzing ICFG 08_rand_cas.i [2022-11-02 20:57:42,907 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:57:42,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:57:42,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-02 20:57:42,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:57:43,013 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:57:43,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 129 transitions, 263 flow [2022-11-02 20:57:43,129 INFO L130 PetriNetUnfolder]: 14/140 cut-off events. [2022-11-02 20:57:43,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:57:43,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 140 events. 14/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2022-11-02 20:57:43,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 129 transitions, 263 flow [2022-11-02 20:57:43,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 129 transitions, 263 flow [2022-11-02 20:57:43,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:43,163 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;@652abd1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:43,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:57:43,179 INFO L130 PetriNetUnfolder]: 2/55 cut-off events. [2022-11-02 20:57:43,179 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:57:43,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:43,181 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:43,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:57:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1240459769, now seen corresponding path program 1 times [2022-11-02 20:57:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:43,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765184034] [2022-11-02 20:57:43,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:43,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:43,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:43,496 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:43,498 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:57:43,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2022-11-02 20:57:43,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-11-02 20:57:43,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2022-11-02 20:57:43,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2022-11-02 20:57:43,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2022-11-02 20:57:43,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-02 20:57:43,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-02 20:57:43,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:57:43,507 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:57:43,511 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:57:43,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-02 20:57:43,601 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:57:43,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 226 transitions, 464 flow [2022-11-02 20:57:43,717 INFO L130 PetriNetUnfolder]: 27/250 cut-off events. [2022-11-02 20:57:43,717 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:57:43,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 250 events. 27/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 690 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 205. Up to 6 conditions per place. [2022-11-02 20:57:43,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 226 transitions, 464 flow [2022-11-02 20:57:43,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 226 transitions, 464 flow [2022-11-02 20:57:43,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:43,745 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;@652abd1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:43,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-02 20:57:43,773 INFO L130 PetriNetUnfolder]: 3/95 cut-off events. [2022-11-02 20:57:43,789 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:57:43,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:43,789 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:43,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2022-11-02 20:57:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash -912953981, now seen corresponding path program 1 times [2022-11-02 20:57:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:43,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876514349] [2022-11-02 20:57:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:43,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:43,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:43,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:43,916 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:57:43,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-02 20:57:43,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2022-11-02 20:57:43,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2022-11-02 20:57:43,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 10 remaining) [2022-11-02 20:57:43,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2022-11-02 20:57:43,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2022-11-02 20:57:43,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2022-11-02 20:57:43,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2022-11-02 20:57:43,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2022-11-02 20:57:43,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2022-11-02 20:57:43,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:57:43,920 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:57:43,921 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:57:43,921 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-02 20:57:44,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:57:44,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 323 transitions, 667 flow [2022-11-02 20:57:44,236 INFO L130 PetriNetUnfolder]: 40/360 cut-off events. [2022-11-02 20:57:44,237 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:57:44,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 360 events. 40/360 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1271 event pairs, 0 based on Foata normal form. 0/307 useless extension candidates. Maximal degree in co-relation 301. Up to 8 conditions per place. [2022-11-02 20:57:44,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 323 transitions, 667 flow [2022-11-02 20:57:44,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 323 transitions, 667 flow [2022-11-02 20:57:44,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:44,268 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;@652abd1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:44,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-02 20:57:44,302 INFO L130 PetriNetUnfolder]: 9/145 cut-off events. [2022-11-02 20:57:44,302 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:57:44,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:44,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:44,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:57:44,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:44,311 INFO L85 PathProgramCache]: Analyzing trace with hash -256942526, now seen corresponding path program 1 times [2022-11-02 20:57:44,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:44,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062646924] [2022-11-02 20:57:44,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:44,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:44,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062646924] [2022-11-02 20:57:44,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062646924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:44,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:44,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:57:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299049347] [2022-11-02 20:57:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:44,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:57:44,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:57:44,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:57:44,914 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 323 [2022-11-02 20:57:44,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 323 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:44,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:44,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 323 [2022-11-02 20:57:44,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:57:54,972 INFO L130 PetriNetUnfolder]: 10671/37188 cut-off events. [2022-11-02 20:57:54,973 INFO L131 PetriNetUnfolder]: For 1584/1584 co-relation queries the response was YES. [2022-11-02 20:57:55,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52732 conditions, 37188 events. 10671/37188 cut-off events. For 1584/1584 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 472718 event pairs, 2657 based on Foata normal form. 8467/42463 useless extension candidates. Maximal degree in co-relation 7100. Up to 5631 conditions per place. [2022-11-02 20:57:55,495 INFO L137 encePairwiseOnDemand]: 286/323 looper letters, 126 selfloop transitions, 16 changer transitions 0/382 dead transitions. [2022-11-02 20:57:55,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 382 transitions, 1129 flow [2022-11-02 20:57:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:57:55,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:57:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1998 transitions. [2022-11-02 20:57:55,526 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8836797877045555 [2022-11-02 20:57:55,527 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1998 transitions. [2022-11-02 20:57:55,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1998 transitions. [2022-11-02 20:57:55,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:57:55,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1998 transitions. [2022-11-02 20:57:55,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.42857142857144) internal successors, (1998), 7 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:55,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:55,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:55,572 INFO L175 Difference]: Start difference. First operand has 293 places, 323 transitions, 667 flow. Second operand 7 states and 1998 transitions. [2022-11-02 20:57:55,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 382 transitions, 1129 flow [2022-11-02 20:57:55,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 382 transitions, 1113 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-11-02 20:57:55,600 INFO L231 Difference]: Finished difference. Result has 284 places, 293 transitions, 682 flow [2022-11-02 20:57:55,603 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=682, PETRI_PLACES=284, PETRI_TRANSITIONS=293} [2022-11-02 20:57:55,611 INFO L287 CegarLoopForPetriNet]: 293 programPoint places, -9 predicate places. [2022-11-02 20:57:55,612 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 293 transitions, 682 flow [2022-11-02 20:57:55,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.66666666666666) internal successors, (1504), 6 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:55,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:55,614 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:55,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:57:55,615 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2022-11-02 20:57:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 311081830, now seen corresponding path program 1 times [2022-11-02 20:57:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:55,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763943610] [2022-11-02 20:57:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:55,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:57:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:57:55,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:57:55,705 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:57:55,705 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-02 20:57:55,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (11 of 13 remaining) [2022-11-02 20:57:55,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (10 of 13 remaining) [2022-11-02 20:57:55,706 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (9 of 13 remaining) [2022-11-02 20:57:55,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (8 of 13 remaining) [2022-11-02 20:57:55,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (7 of 13 remaining) [2022-11-02 20:57:55,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (6 of 13 remaining) [2022-11-02 20:57:55,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 13 remaining) [2022-11-02 20:57:55,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 13 remaining) [2022-11-02 20:57:55,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 13 remaining) [2022-11-02 20:57:55,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 13 remaining) [2022-11-02 20:57:55,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 13 remaining) [2022-11-02 20:57:55,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 13 remaining) [2022-11-02 20:57:55,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:57:55,710 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-02 20:57:55,711 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-02 20:57:55,711 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-02 20:57:55,799 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:57:55,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 420 transitions, 872 flow [2022-11-02 20:57:56,052 INFO L130 PetriNetUnfolder]: 53/470 cut-off events. [2022-11-02 20:57:56,053 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-02 20:57:56,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 470 events. 53/470 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1901 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 397. Up to 10 conditions per place. [2022-11-02 20:57:56,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 420 transitions, 872 flow [2022-11-02 20:57:56,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 420 transitions, 872 flow [2022-11-02 20:57:56,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:57:56,075 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;@652abd1a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:57:56,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-02 20:57:56,091 INFO L130 PetriNetUnfolder]: 8/143 cut-off events. [2022-11-02 20:57:56,092 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:57:56,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:57:56,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:56,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-11-02 20:57:56,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:56,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1009575106, now seen corresponding path program 1 times [2022-11-02 20:57:56,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:56,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239594024] [2022-11-02 20:57:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:56,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:57:56,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239594024] [2022-11-02 20:57:56,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239594024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:56,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:56,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:57:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716681946] [2022-11-02 20:57:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:57:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:57:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:57:56,338 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 420 [2022-11-02 20:57:56,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 420 transitions, 872 flow. Second operand has 6 states, 6 states have (on average 327.6666666666667) internal successors, (1966), 6 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:57:56,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:57:56,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 420 [2022-11-02 20:57:56,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand