./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ --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 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- 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-dbf71c6-m [2022-10-17 10:42:59,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:42:59,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:42:59,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:42:59,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:42:59,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:42:59,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:42:59,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:42:59,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:42:59,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:42:59,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:42:59,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:42:59,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:42:59,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:42:59,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:42:59,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:42:59,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:42:59,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:42:59,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:42:59,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:42:59,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:42:59,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:42:59,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:42:59,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:42:59,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:42:59,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:42:59,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:42:59,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:42:59,478 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:42:59,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:42:59,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:42:59,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:42:59,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:42:59,489 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:42:59,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:42:59,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:42:59,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:42:59,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:42:59,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:42:59,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:42:59,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:42:59,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:42:59,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:42:59,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:42:59,565 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:42:59,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:42:59,566 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:42:59,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:42:59,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:42:59,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:42:59,567 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:42:59,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:42:59,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:42:59,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:42:59,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:42:59,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:42:59,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:42:59,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:42:59,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:42:59,570 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:42:59,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:42:59,570 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:42:59,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:42:59,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:42:59,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:42:59,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:42:59,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:42:59,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:42:59,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:42:59,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:42:59,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:42:59,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:42:59,574 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:42:59,574 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:42:59,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:42:59,574 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_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2022-10-17 10:42:59,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:42:59,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:42:59,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:42:59,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:42:59,893 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:42:59,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-10-17 10:42:59,966 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/data/9419931ee/16a9806ea3184be6b92fec3401051fcb/FLAG7a6683022 [2022-10-17 10:43:00,554 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:43:00,555 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2022-10-17 10:43:00,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/data/9419931ee/16a9806ea3184be6b92fec3401051fcb/FLAG7a6683022 [2022-10-17 10:43:00,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/data/9419931ee/16a9806ea3184be6b92fec3401051fcb [2022-10-17 10:43:00,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:43:00,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:43:00,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:00,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:43:00,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:43:00,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:00" (1/1) ... [2022-10-17 10:43:00,808 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d82774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:00, skipping insertion in model container [2022-10-17 10:43:00,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:00" (1/1) ... [2022-10-17 10:43:00,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:43:00,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:43:01,194 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_78bcf1cf-086b-4537-8ef4-d992f9dda39c/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-10-17 10:43:01,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:01,210 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:43:01,245 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_78bcf1cf-086b-4537-8ef4-d992f9dda39c/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i[30553,30566] [2022-10-17 10:43:01,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:01,286 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:43:01,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01 WrapperNode [2022-10-17 10:43:01,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:01,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:01,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:43:01,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:43:01,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,309 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,334 INFO L138 Inliner]: procedures = 172, calls = 27, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 125 [2022-10-17 10:43:01,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:01,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:43:01,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:43:01,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:43:01,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:43:01,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:43:01,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:43:01,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:43:01,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (1/1) ... [2022-10-17 10:43:01,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:01,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:01,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:43:01,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bcf1cf-086b-4537-8ef4-d992f9dda39c/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:43:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:43:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-10-17 10:43:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-10-17 10:43:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-10-17 10:43:01,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-10-17 10:43:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:43:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:43:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:43:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:43:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:43:01,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:43:01,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:43:01,482 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:43:01,630 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:43:01,632 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:43:02,015 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:43:02,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:43:02,160 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:43:02,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:02 BoogieIcfgContainer [2022-10-17 10:43:02,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:43:02,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:43:02,166 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:43:02,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:43:02,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:43:00" (1/3) ... [2022-10-17 10:43:02,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee87135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:02, skipping insertion in model container [2022-10-17 10:43:02,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:01" (2/3) ... [2022-10-17 10:43:02,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee87135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:02, skipping insertion in model container [2022-10-17 10:43:02,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:02" (3/3) ... [2022-10-17 10:43:02,173 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2022-10-17 10:43:02,182 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:43:02,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:43:02,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:43:02,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:43:02,244 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:43:02,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 170 flow [2022-10-17 10:43:02,361 INFO L130 PetriNetUnfolder]: 6/90 cut-off events. [2022-10-17 10:43:02,361 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:43:02,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 90 events. 6/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 128 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 71. Up to 4 conditions per place. [2022-10-17 10:43:02,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 170 flow [2022-10-17 10:43:02,371 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 79 transitions, 166 flow [2022-10-17 10:43:02,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:02,389 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;@44b71903, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:02,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:43:02,401 INFO L130 PetriNetUnfolder]: 4/42 cut-off events. [2022-10-17 10:43:02,401 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:43:02,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:02,402 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] [2022-10-17 10:43:02,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:02,408 INFO L85 PathProgramCache]: Analyzing trace with hash 125568587, now seen corresponding path program 1 times [2022-10-17 10:43:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:02,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608598988] [2022-10-17 10:43:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:02,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:02,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:02,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608598988] [2022-10-17 10:43:02,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608598988] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:02,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:02,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:43:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355859199] [2022-10-17 10:43:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:02,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:43:02,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:43:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:43:02,792 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 80 [2022-10-17 10:43:02,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:02,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:02,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 80 [2022-10-17 10:43:02,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:02,934 INFO L130 PetriNetUnfolder]: 61/211 cut-off events. [2022-10-17 10:43:02,934 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 10:43:02,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 211 events. 61/211 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 574 event pairs, 17 based on Foata normal form. 102/296 useless extension candidates. Maximal degree in co-relation 321. Up to 100 conditions per place. [2022-10-17 10:43:02,942 INFO L137 encePairwiseOnDemand]: 72/80 looper letters, 20 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-10-17 10:43:02,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 190 flow [2022-10-17 10:43:02,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:43:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:43:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 197 transitions. [2022-10-17 10:43:02,961 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8208333333333333 [2022-10-17 10:43:02,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 197 transitions. [2022-10-17 10:43:02,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 197 transitions. [2022-10-17 10:43:02,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:02,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 197 transitions. [2022-10-17 10:43:02,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:02,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:02,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:02,988 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 166 flow. Second operand 3 states and 197 transitions. [2022-10-17 10:43:02,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 190 flow [2022-10-17 10:43:02,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 69 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:43:03,003 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 147 flow [2022-10-17 10:43:03,005 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2022-10-17 10:43:03,009 INFO L287 CegarLoopForPetriNet]: 80 programPoint places, -8 predicate places. [2022-10-17 10:43:03,010 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 147 flow [2022-10-17 10:43:03,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:03,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:03,011 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, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:03,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:43:03,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1533918423, now seen corresponding path program 1 times [2022-10-17 10:43:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:03,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813231091] [2022-10-17 10:43:03,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:03,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:43:03,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:43:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:43:03,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:43:03,145 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:43:03,147 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-10-17 10:43:03,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-10-17 10:43:03,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-10-17 10:43:03,152 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-10-17 10:43:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:43:03,156 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:43:03,169 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:43:03,169 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-17 10:43:03,242 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:43:03,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 268 flow [2022-10-17 10:43:03,300 INFO L130 PetriNetUnfolder]: 8/131 cut-off events. [2022-10-17 10:43:03,300 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:43:03,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 131 events. 8/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 250 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 140. Up to 6 conditions per place. [2022-10-17 10:43:03,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 122 transitions, 268 flow [2022-10-17 10:43:03,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 107 transitions, 229 flow [2022-10-17 10:43:03,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:03,318 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;@44b71903, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:03,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-17 10:43:03,329 INFO L130 PetriNetUnfolder]: 3/39 cut-off events. [2022-10-17 10:43:03,329 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:43:03,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:03,329 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] [2022-10-17 10:43:03,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:43:03,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2007188311, now seen corresponding path program 1 times [2022-10-17 10:43:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:03,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113555010] [2022-10-17 10:43:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:03,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:03,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113555010] [2022-10-17 10:43:03,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113555010] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:03,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:03,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:43:03,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491542282] [2022-10-17 10:43:03,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:43:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:43:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:43:03,432 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 122 [2022-10-17 10:43:03,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 107 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:03,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:03,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 122 [2022-10-17 10:43:03,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:04,264 INFO L130 PetriNetUnfolder]: 1665/3238 cut-off events. [2022-10-17 10:43:04,264 INFO L131 PetriNetUnfolder]: For 191/191 co-relation queries the response was YES. [2022-10-17 10:43:04,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6006 conditions, 3238 events. 1665/3238 cut-off events. For 191/191 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 20450 event pairs, 672 based on Foata normal form. 1436/4484 useless extension candidates. Maximal degree in co-relation 5975. Up to 2444 conditions per place. [2022-10-17 10:43:04,303 INFO L137 encePairwiseOnDemand]: 113/122 looper letters, 39 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2022-10-17 10:43:04,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 104 transitions, 312 flow [2022-10-17 10:43:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:43:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:43:04,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2022-10-17 10:43:04,311 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7568306010928961 [2022-10-17 10:43:04,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2022-10-17 10:43:04,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2022-10-17 10:43:04,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:04,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2022-10-17 10:43:04,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:04,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:04,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:04,319 INFO L175 Difference]: Start difference. First operand has 109 places, 107 transitions, 229 flow. Second operand 3 states and 277 transitions. [2022-10-17 10:43:04,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 104 transitions, 312 flow [2022-10-17 10:43:04,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 104 transitions, 309 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-10-17 10:43:04,325 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 219 flow [2022-10-17 10:43:04,326 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2022-10-17 10:43:04,327 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, -8 predicate places. [2022-10-17 10:43:04,327 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 219 flow [2022-10-17 10:43:04,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:04,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:04,328 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, 1] [2022-10-17 10:43:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:43:04,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:43:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1650657833, now seen corresponding path program 1 times [2022-10-17 10:43:04,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:04,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387090451] [2022-10-17 10:43:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:04,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387090451] [2022-10-17 10:43:04,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387090451] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:04,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:04,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:43:04,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220364155] [2022-10-17 10:43:04,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:04,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:43:04,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:04,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:43:04,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:43:04,555 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 122 [2022-10-17 10:43:04,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:04,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:04,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 122 [2022-10-17 10:43:04,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:05,658 INFO L130 PetriNetUnfolder]: 2348/4410 cut-off events. [2022-10-17 10:43:05,658 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2022-10-17 10:43:05,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8672 conditions, 4410 events. 2348/4410 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 28842 event pairs, 690 based on Foata normal form. 42/4428 useless extension candidates. Maximal degree in co-relation 8639. Up to 2752 conditions per place. [2022-10-17 10:43:05,715 INFO L137 encePairwiseOnDemand]: 112/122 looper letters, 85 selfloop transitions, 17 changer transitions 0/162 dead transitions. [2022-10-17 10:43:05,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 162 transitions, 586 flow [2022-10-17 10:43:05,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:43:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:43:05,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 615 transitions. [2022-10-17 10:43:05,718 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7201405152224825 [2022-10-17 10:43:05,719 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 615 transitions. [2022-10-17 10:43:05,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 615 transitions. [2022-10-17 10:43:05,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:05,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 615 transitions. [2022-10-17 10:43:05,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.85714285714286) internal successors, (615), 7 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:05,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:05,726 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:05,726 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 219 flow. Second operand 7 states and 615 transitions. [2022-10-17 10:43:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 162 transitions, 586 flow [2022-10-17 10:43:05,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 162 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:43:05,732 INFO L231 Difference]: Finished difference. Result has 110 places, 110 transitions, 335 flow [2022-10-17 10:43:05,733 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=110, PETRI_TRANSITIONS=110} [2022-10-17 10:43:05,733 INFO L287 CegarLoopForPetriNet]: 109 programPoint places, 1 predicate places. [2022-10-17 10:43:05,734 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 110 transitions, 335 flow [2022-10-17 10:43:05,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:05,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:05,735 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, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:05,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:43:05,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-10-17 10:43:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash 657906234, now seen corresponding path program 1 times [2022-10-17 10:43:05,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:05,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286636907] [2022-10-17 10:43:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:05,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:43:05,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:43:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:43:05,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:43:05,782 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:43:05,782 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-10-17 10:43:05,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-10-17 10:43:05,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-10-17 10:43:05,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-10-17 10:43:05,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-10-17 10:43:05,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:43:05,783 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 10:43:05,784 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-17 10:43:05,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-17 10:43:05,898 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:43:05,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 164 transitions, 370 flow [2022-10-17 10:43:05,936 INFO L130 PetriNetUnfolder]: 10/172 cut-off events. [2022-10-17 10:43:05,937 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-10-17 10:43:05,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 172 events. 10/172 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 413 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2022-10-17 10:43:05,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 164 transitions, 370 flow [2022-10-17 10:43:05,942 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 135 transitions, 294 flow [2022-10-17 10:43:05,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:05,951 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;@44b71903, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:05,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 10:43:05,956 INFO L130 PetriNetUnfolder]: 3/39 cut-off events. [2022-10-17 10:43:05,956 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:43:05,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:05,956 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] [2022-10-17 10:43:05,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:43:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 967602458, now seen corresponding path program 1 times [2022-10-17 10:43:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:05,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187991475] [2022-10-17 10:43:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:06,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:06,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187991475] [2022-10-17 10:43:06,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187991475] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:06,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:06,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:43:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982807412] [2022-10-17 10:43:06,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:43:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:06,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:43:06,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:43:06,031 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 164 [2022-10-17 10:43:06,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 135 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:06,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:06,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 164 [2022-10-17 10:43:06,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:15,798 INFO L130 PetriNetUnfolder]: 32840/53020 cut-off events. [2022-10-17 10:43:15,798 INFO L131 PetriNetUnfolder]: For 5209/5209 co-relation queries the response was YES. [2022-10-17 10:43:16,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101267 conditions, 53020 events. 32840/53020 cut-off events. For 5209/5209 co-relation queries the response was YES. Maximal size of possible extension queue 1509. Compared 441282 event pairs, 16590 based on Foata normal form. 18958/69584 useless extension candidates. Maximal degree in co-relation 101235. Up to 44217 conditions per place. [2022-10-17 10:43:16,377 INFO L137 encePairwiseOnDemand]: 154/164 looper letters, 55 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2022-10-17 10:43:16,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 136 transitions, 426 flow [2022-10-17 10:43:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:43:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:43:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2022-10-17 10:43:16,381 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7195121951219512 [2022-10-17 10:43:16,381 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2022-10-17 10:43:16,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2022-10-17 10:43:16,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:16,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2022-10-17 10:43:16,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:16,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:16,385 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:16,385 INFO L175 Difference]: Start difference. First operand has 138 places, 135 transitions, 294 flow. Second operand 3 states and 354 transitions. [2022-10-17 10:43:16,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 136 transitions, 426 flow [2022-10-17 10:43:16,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 136 transitions, 417 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-10-17 10:43:16,392 INFO L231 Difference]: Finished difference. Result has 130 places, 125 transitions, 287 flow [2022-10-17 10:43:16,393 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=130, PETRI_TRANSITIONS=125} [2022-10-17 10:43:16,396 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, -8 predicate places. [2022-10-17 10:43:16,396 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 125 transitions, 287 flow [2022-10-17 10:43:16,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:16,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:16,397 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, 1] [2022-10-17 10:43:16,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:43:16,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:43:16,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:16,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1745396355, now seen corresponding path program 1 times [2022-10-17 10:43:16,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:16,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132017352] [2022-10-17 10:43:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:16,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:16,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:16,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132017352] [2022-10-17 10:43:16,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132017352] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:16,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:16,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:43:16,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087274585] [2022-10-17 10:43:16,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:16,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:43:16,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:43:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:43:16,532 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 164 [2022-10-17 10:43:16,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 125 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:16,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:16,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 164 [2022-10-17 10:43:16,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:28,799 INFO L130 PetriNetUnfolder]: 49463/78236 cut-off events. [2022-10-17 10:43:28,799 INFO L131 PetriNetUnfolder]: For 10424/10424 co-relation queries the response was YES. [2022-10-17 10:43:29,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156806 conditions, 78236 events. 49463/78236 cut-off events. For 10424/10424 co-relation queries the response was YES. Maximal size of possible extension queue 2155. Compared 660463 event pairs, 18896 based on Foata normal form. 549/78708 useless extension candidates. Maximal degree in co-relation 156772. Up to 53003 conditions per place. [2022-10-17 10:43:29,464 INFO L137 encePairwiseOnDemand]: 150/164 looper letters, 138 selfloop transitions, 27 changer transitions 0/240 dead transitions. [2022-10-17 10:43:29,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 240 transitions, 914 flow [2022-10-17 10:43:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:43:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:43:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 818 transitions. [2022-10-17 10:43:29,468 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7125435540069687 [2022-10-17 10:43:29,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 818 transitions. [2022-10-17 10:43:29,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 818 transitions. [2022-10-17 10:43:29,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:29,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 818 transitions. [2022-10-17 10:43:29,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.85714285714286) internal successors, (818), 7 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:29,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:29,476 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:29,476 INFO L175 Difference]: Start difference. First operand has 130 places, 125 transitions, 287 flow. Second operand 7 states and 818 transitions. [2022-10-17 10:43:29,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 240 transitions, 914 flow [2022-10-17 10:43:29,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 240 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:43:29,485 INFO L231 Difference]: Finished difference. Result has 139 places, 148 transitions, 478 flow [2022-10-17 10:43:29,485 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=139, PETRI_TRANSITIONS=148} [2022-10-17 10:43:29,486 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 1 predicate places. [2022-10-17 10:43:29,486 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 148 transitions, 478 flow [2022-10-17 10:43:29,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:29,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:29,487 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, 1, 1, 1, 1] [2022-10-17 10:43:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:43:29,487 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-10-17 10:43:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1775861579, now seen corresponding path program 1 times [2022-10-17 10:43:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:29,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006968872] [2022-10-17 10:43:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:29,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:29,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:29,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006968872] [2022-10-17 10:43:29,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006968872] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:29,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:29,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:43:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110742931] [2022-10-17 10:43:29,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:29,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:43:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:43:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:43:29,612 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 164 [2022-10-17 10:43:29,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 148 transitions, 478 flow. Second operand has 7 states, 7 states have (on average 93.71428571428571) internal successors, (656), 7 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:29,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:29,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 164 [2022-10-17 10:43:29,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand