./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:05:21,292 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:05:21,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 22:05:21,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:05:21,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:05:21,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:05:21,468 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:05:21,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:05:21,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:05:21,475 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:05:21,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:05:21,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:05:21,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:05:21,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:05:21,479 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:05:21,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:05:21,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 22:05:21,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:05:21,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:05:21,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:05:21,482 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:05:21,483 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 22:05:21,483 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:05:21,484 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 22:05:21,484 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:05:21,485 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 22:05:21,485 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:05:21,486 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:05:21,486 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:05:21,487 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:05:21,488 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:05:21,488 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:05:21,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:05:21,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:05:21,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 22:05:21,489 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:05:21,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:05:21,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:05:21,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:05:21,491 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 22:05:21,491 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:05:21,491 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:05:21,491 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2023-11-24 22:05:21,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:05:21,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:05:21,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:05:21,813 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:05:21,813 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:05:21,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread/queue.i [2023-11-24 22:05:24,925 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:05:25,257 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:05:25,258 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/sv-benchmarks/c/pthread/queue.i [2023-11-24 22:05:25,300 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/data/6665d6236/d3b1611213564392bd1f2fa260aebe66/FLAG7061bd838 [2023-11-24 22:05:25,321 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/data/6665d6236/d3b1611213564392bd1f2fa260aebe66 [2023-11-24 22:05:25,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:05:25,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:05:25,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:25,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:05:25,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:05:25,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:25" (1/1) ... [2023-11-24 22:05:25,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6844f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:25, skipping insertion in model container [2023-11-24 22:05:25,334 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:25" (1/1) ... [2023-11-24 22:05:25,394 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:05:25,923 WARN L240 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_58b442ba-5102-47c0-ab33-88b76d16b14b/sv-benchmarks/c/pthread/queue.i[43284,43297] [2023-11-24 22:05:25,931 WARN L240 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_58b442ba-5102-47c0-ab33-88b76d16b14b/sv-benchmarks/c/pthread/queue.i[43491,43504] [2023-11-24 22:05:25,935 WARN L240 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_58b442ba-5102-47c0-ab33-88b76d16b14b/sv-benchmarks/c/pthread/queue.i[43772,43785] [2023-11-24 22:05:25,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:25,954 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:05:26,011 WARN L240 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_58b442ba-5102-47c0-ab33-88b76d16b14b/sv-benchmarks/c/pthread/queue.i[43284,43297] [2023-11-24 22:05:26,014 WARN L240 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_58b442ba-5102-47c0-ab33-88b76d16b14b/sv-benchmarks/c/pthread/queue.i[43491,43504] [2023-11-24 22:05:26,017 WARN L240 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_58b442ba-5102-47c0-ab33-88b76d16b14b/sv-benchmarks/c/pthread/queue.i[43772,43785] [2023-11-24 22:05:26,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:26,116 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:05:26,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26 WrapperNode [2023-11-24 22:05:26,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:26,119 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:05:26,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:05:26,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:05:26,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,190 INFO L138 Inliner]: procedures = 275, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 260 [2023-11-24 22:05:26,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:05:26,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:05:26,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:05:26,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:05:26,204 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,232 INFO L175 MemorySlicer]: Split 55 memory accesses to 7 slices as follows [2, 8, 5, 2, 4, 32, 2]. 58 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 8, 5, 0, 0, 0, 0]. The 20 writes are split as follows [0, 0, 0, 1, 3, 15, 1]. [2023-11-24 22:05:26,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,248 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,252 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:05:26,265 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:05:26,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:05:26,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:05:26,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (1/1) ... [2023-11-24 22:05:26,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:05:26,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:05:26,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:05:26,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:05:26,375 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-24 22:05:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-24 22:05:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-24 22:05:26,376 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-24 22:05:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:05:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:05:26,376 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 22:05:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:05:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:05:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 22:05:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 22:05:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 22:05:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 22:05:26,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-24 22:05:26,378 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 22:05:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:05:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:05:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:05:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:05:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 22:05:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 22:05:26,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 22:05:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-24 22:05:26,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:05:26,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:05:26,382 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 22:05:26,577 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:05:26,580 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:05:27,066 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:05:27,516 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:05:27,517 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-24 22:05:27,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:05:27 BoogieIcfgContainer [2023-11-24 22:05:27,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:05:27,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:05:27,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:05:27,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:05:27,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:05:25" (1/3) ... [2023-11-24 22:05:27,526 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e10761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:05:27, skipping insertion in model container [2023-11-24 22:05:27,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:26" (2/3) ... [2023-11-24 22:05:27,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e10761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:05:27, skipping insertion in model container [2023-11-24 22:05:27,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:05:27" (3/3) ... [2023-11-24 22:05:27,529 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-11-24 22:05:27,540 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 22:05:27,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:05:27,552 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-24 22:05:27,552 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:05:27,753 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 22:05:27,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 47 transitions, 108 flow [2023-11-24 22:05:27,837 INFO L124 PetriNetUnfolderBase]: 7/45 cut-off events. [2023-11-24 22:05:27,838 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:05:27,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 45 events. 7/45 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-24 22:05:27,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 47 transitions, 108 flow [2023-11-24 22:05:27,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 43 transitions, 95 flow [2023-11-24 22:05:27,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:05:27,864 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=LoopHeads, 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;@21c68606, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:05:27,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-24 22:05:27,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:05:27,870 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 22:05:27,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:05:27,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:27,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 22:05:27,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:27,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:27,877 INFO L85 PathProgramCache]: Analyzing trace with hash 663893, now seen corresponding path program 1 times [2023-11-24 22:05:27,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:27,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813408114] [2023-11-24 22:05:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:27,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:28,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:28,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:28,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813408114] [2023-11-24 22:05:28,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813408114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:28,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:28,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:05:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611990416] [2023-11-24 22:05:28,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:28,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 22:05:28,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 22:05:28,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 22:05:28,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:28,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 95 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:28,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:28,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:28,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:28,577 INFO L124 PetriNetUnfolderBase]: 435/786 cut-off events. [2023-11-24 22:05:28,578 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-24 22:05:28,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1538 conditions, 786 events. 435/786 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3576 event pairs, 339 based on Foata normal form. 48/744 useless extension candidates. Maximal degree in co-relation 1440. Up to 712 conditions per place. [2023-11-24 22:05:28,591 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 31 selfloop transitions, 0 changer transitions 0/38 dead transitions. [2023-11-24 22:05:28,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 147 flow [2023-11-24 22:05:28,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 22:05:28,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-24 22:05:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2023-11-24 22:05:28,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2023-11-24 22:05:28,610 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 54 transitions. [2023-11-24 22:05:28,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 54 transitions. [2023-11-24 22:05:28,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:28,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 54 transitions. [2023-11-24 22:05:28,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:28,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:28,626 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:28,628 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 95 flow. Second operand 2 states and 54 transitions. [2023-11-24 22:05:28,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 147 flow [2023-11-24 22:05:28,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 142 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 22:05:28,636 INFO L231 Difference]: Finished difference. Result has 39 places, 38 transitions, 80 flow [2023-11-24 22:05:28,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=38} [2023-11-24 22:05:28,644 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-11-24 22:05:28,645 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 38 transitions, 80 flow [2023-11-24 22:05:28,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:28,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:28,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:05:28,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:05:28,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:28,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash 535466999, now seen corresponding path program 1 times [2023-11-24 22:05:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:28,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640463509] [2023-11-24 22:05:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640463509] [2023-11-24 22:05:28,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640463509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:28,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:28,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:05:28,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057898389] [2023-11-24 22:05:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:28,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:28,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:28,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:28,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:28,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:29,166 INFO L124 PetriNetUnfolderBase]: 415/766 cut-off events. [2023-11-24 22:05:29,166 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 22:05:29,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1487 conditions, 766 events. 415/766 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3606 event pairs, 312 based on Foata normal form. 0/697 useless extension candidates. Maximal degree in co-relation 1484. Up to 642 conditions per place. [2023-11-24 22:05:29,175 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 40 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-24 22:05:29,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 188 flow [2023-11-24 22:05:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-24 22:05:29,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2023-11-24 22:05:29,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-24 22:05:29,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-24 22:05:29,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:29,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-24 22:05:29,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:29,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:29,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:29,184 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 80 flow. Second operand 3 states and 73 transitions. [2023-11-24 22:05:29,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 188 flow [2023-11-24 22:05:29,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 22:05:29,186 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 82 flow [2023-11-24 22:05:29,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-24 22:05:29,188 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-11-24 22:05:29,188 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 82 flow [2023-11-24 22:05:29,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:29,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:29,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:05:29,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:05:29,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:29,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash -580390538, now seen corresponding path program 1 times [2023-11-24 22:05:29,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:29,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737925667] [2023-11-24 22:05:29,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:29,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:29,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:29,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:29,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737925667] [2023-11-24 22:05:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737925667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:29,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:29,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:05:29,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737895246] [2023-11-24 22:05:29,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:29,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:05:29,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:05:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:05:29,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:29,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:29,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:29,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:29,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:30,366 INFO L124 PetriNetUnfolderBase]: 690/1269 cut-off events. [2023-11-24 22:05:30,366 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-24 22:05:30,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 1269 events. 690/1269 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6384 event pairs, 74 based on Foata normal form. 0/1207 useless extension candidates. Maximal degree in co-relation 2480. Up to 678 conditions per place. [2023-11-24 22:05:30,376 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 72 selfloop transitions, 10 changer transitions 3/92 dead transitions. [2023-11-24 22:05:30,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 92 transitions, 375 flow [2023-11-24 22:05:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:05:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 22:05:30,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2023-11-24 22:05:30,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2023-11-24 22:05:30,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 147 transitions. [2023-11-24 22:05:30,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 147 transitions. [2023-11-24 22:05:30,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:30,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 147 transitions. [2023-11-24 22:05:30,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,391 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,391 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 82 flow. Second operand 6 states and 147 transitions. [2023-11-24 22:05:30,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 92 transitions, 375 flow [2023-11-24 22:05:30,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 92 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:30,396 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 146 flow [2023-11-24 22:05:30,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-24 22:05:30,399 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-11-24 22:05:30,400 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 146 flow [2023-11-24 22:05:30,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:30,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:05:30,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:05:30,401 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:30,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash -497092650, now seen corresponding path program 1 times [2023-11-24 22:05:30,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:30,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063111548] [2023-11-24 22:05:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:30,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:30,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:30,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063111548] [2023-11-24 22:05:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063111548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:30,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:30,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:05:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942180745] [2023-11-24 22:05:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:30,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:30,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:30,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:30,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:30,734 INFO L124 PetriNetUnfolderBase]: 440/849 cut-off events. [2023-11-24 22:05:30,734 INFO L125 PetriNetUnfolderBase]: For 152/155 co-relation queries the response was YES. [2023-11-24 22:05:30,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 849 events. 440/849 cut-off events. For 152/155 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3789 event pairs, 226 based on Foata normal form. 30/854 useless extension candidates. Maximal degree in co-relation 1746. Up to 436 conditions per place. [2023-11-24 22:05:30,741 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 37 selfloop transitions, 4 changer transitions 4/51 dead transitions. [2023-11-24 22:05:30,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 221 flow [2023-11-24 22:05:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:30,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-24 22:05:30,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2023-11-24 22:05:30,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-24 22:05:30,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-24 22:05:30,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:30,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-24 22:05:30,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,748 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 146 flow. Second operand 3 states and 75 transitions. [2023-11-24 22:05:30,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 221 flow [2023-11-24 22:05:30,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 215 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 22:05:30,752 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 108 flow [2023-11-24 22:05:30,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-11-24 22:05:30,754 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-11-24 22:05:30,755 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 108 flow [2023-11-24 22:05:30,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:30,755 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] [2023-11-24 22:05:30,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:05:30,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:30,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1625196355, now seen corresponding path program 1 times [2023-11-24 22:05:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612299237] [2023-11-24 22:05:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:30,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:30,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612299237] [2023-11-24 22:05:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612299237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:30,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:30,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:05:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846430806] [2023-11-24 22:05:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:30,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:30,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:30,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:30,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:30,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:30,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:30,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:30,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:30,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:31,070 INFO L124 PetriNetUnfolderBase]: 265/580 cut-off events. [2023-11-24 22:05:31,070 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-24 22:05:31,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 580 events. 265/580 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2355 event pairs, 91 based on Foata normal form. 32/601 useless extension candidates. Maximal degree in co-relation 1191. Up to 266 conditions per place. [2023-11-24 22:05:31,075 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 35 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2023-11-24 22:05:31,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 215 flow [2023-11-24 22:05:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:31,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:31,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-24 22:05:31,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-11-24 22:05:31,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-24 22:05:31,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-24 22:05:31,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:31,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-24 22:05:31,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:31,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:31,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:31,079 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 108 flow. Second operand 3 states and 72 transitions. [2023-11-24 22:05:31,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 215 flow [2023-11-24 22:05:31,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 205 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:31,082 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 110 flow [2023-11-24 22:05:31,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-11-24 22:05:31,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2023-11-24 22:05:31,083 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 110 flow [2023-11-24 22:05:31,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:31,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:31,084 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] [2023-11-24 22:05:31,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:05:31,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:31,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -876403870, now seen corresponding path program 1 times [2023-11-24 22:05:31,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:31,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822282623] [2023-11-24 22:05:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:31,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:33,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:33,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822282623] [2023-11-24 22:05:33,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822282623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:33,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:33,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:05:33,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115047964] [2023-11-24 22:05:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:33,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:05:33,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:05:33,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:05:33,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:33,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 110 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:33,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:33,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:33,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:33,742 INFO L124 PetriNetUnfolderBase]: 384/828 cut-off events. [2023-11-24 22:05:33,742 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-11-24 22:05:33,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 828 events. 384/828 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3997 event pairs, 84 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 1808. Up to 288 conditions per place. [2023-11-24 22:05:33,748 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 67 selfloop transitions, 16 changer transitions 12/101 dead transitions. [2023-11-24 22:05:33,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 101 transitions, 491 flow [2023-11-24 22:05:33,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 22:05:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 22:05:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2023-11-24 22:05:33,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148936170212766 [2023-11-24 22:05:33,751 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 195 transitions. [2023-11-24 22:05:33,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 195 transitions. [2023-11-24 22:05:33,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:33,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 195 transitions. [2023-11-24 22:05:33,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.5) internal successors, (195), 10 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:33,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:33,754 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 47.0) internal successors, (517), 11 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:33,754 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 110 flow. Second operand 10 states and 195 transitions. [2023-11-24 22:05:33,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 101 transitions, 491 flow [2023-11-24 22:05:33,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 101 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:05:33,759 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 219 flow [2023-11-24 22:05:33,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=219, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2023-11-24 22:05:33,760 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2023-11-24 22:05:33,760 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 219 flow [2023-11-24 22:05:33,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:33,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:33,761 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] [2023-11-24 22:05:33,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:05:33,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:33,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:33,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1434515912, now seen corresponding path program 2 times [2023-11-24 22:05:33,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:33,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472438818] [2023-11-24 22:05:33,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:33,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:35,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472438818] [2023-11-24 22:05:35,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472438818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:35,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:35,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:05:35,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793491699] [2023-11-24 22:05:35,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:35,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:05:35,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:05:35,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:05:35,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:35,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 219 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:35,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:35,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:35,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:35,675 INFO L124 PetriNetUnfolderBase]: 501/1102 cut-off events. [2023-11-24 22:05:35,675 INFO L125 PetriNetUnfolderBase]: For 882/883 co-relation queries the response was YES. [2023-11-24 22:05:35,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 1102 events. 501/1102 cut-off events. For 882/883 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6195 event pairs, 150 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 2874. Up to 661 conditions per place. [2023-11-24 22:05:35,685 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 70 selfloop transitions, 16 changer transitions 6/98 dead transitions. [2023-11-24 22:05:35,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 98 transitions, 595 flow [2023-11-24 22:05:35,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:05:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:05:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2023-11-24 22:05:35,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40189125295508277 [2023-11-24 22:05:35,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 170 transitions. [2023-11-24 22:05:35,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 170 transitions. [2023-11-24 22:05:35,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:35,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 170 transitions. [2023-11-24 22:05:35,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:35,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:35,689 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:35,690 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 219 flow. Second operand 9 states and 170 transitions. [2023-11-24 22:05:35,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 98 transitions, 595 flow [2023-11-24 22:05:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 579 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:35,697 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 369 flow [2023-11-24 22:05:35,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=369, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-11-24 22:05:35,698 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-11-24 22:05:35,698 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 369 flow [2023-11-24 22:05:35,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:35,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:35,699 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] [2023-11-24 22:05:35,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:05:35,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:35,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:35,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1515695148, now seen corresponding path program 3 times [2023-11-24 22:05:35,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:35,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653188318] [2023-11-24 22:05:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:35,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:36,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:36,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653188318] [2023-11-24 22:05:36,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653188318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:36,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:36,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:05:36,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369761681] [2023-11-24 22:05:36,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:36,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:05:36,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:36,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:05:36,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:05:36,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:36,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 369 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:36,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:36,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:36,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:37,787 INFO L124 PetriNetUnfolderBase]: 631/1371 cut-off events. [2023-11-24 22:05:37,788 INFO L125 PetriNetUnfolderBase]: For 1812/1813 co-relation queries the response was YES. [2023-11-24 22:05:37,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3883 conditions, 1371 events. 631/1371 cut-off events. For 1812/1813 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7970 event pairs, 62 based on Foata normal form. 0/1352 useless extension candidates. Maximal degree in co-relation 3863. Up to 321 conditions per place. [2023-11-24 22:05:37,803 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 91 selfloop transitions, 33 changer transitions 9/139 dead transitions. [2023-11-24 22:05:37,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 139 transitions, 930 flow [2023-11-24 22:05:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 22:05:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 22:05:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2023-11-24 22:05:37,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2023-11-24 22:05:37,806 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 236 transitions. [2023-11-24 22:05:37,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 236 transitions. [2023-11-24 22:05:37,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:37,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 236 transitions. [2023-11-24 22:05:37,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:37,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:37,810 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:37,810 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 369 flow. Second operand 12 states and 236 transitions. [2023-11-24 22:05:37,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 139 transitions, 930 flow [2023-11-24 22:05:37,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 139 transitions, 884 flow, removed 23 selfloop flow, removed 0 redundant places. [2023-11-24 22:05:37,830 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 489 flow [2023-11-24 22:05:37,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=489, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2023-11-24 22:05:37,834 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2023-11-24 22:05:37,834 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 489 flow [2023-11-24 22:05:37,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:37,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:37,835 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] [2023-11-24 22:05:37,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:05:37,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:37,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:37,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1601703858, now seen corresponding path program 4 times [2023-11-24 22:05:37,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:37,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664964782] [2023-11-24 22:05:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:37,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:39,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:39,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664964782] [2023-11-24 22:05:39,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664964782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:39,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:39,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 22:05:39,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579536066] [2023-11-24 22:05:39,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:39,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:05:39,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:05:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-24 22:05:39,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2023-11-24 22:05:39,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 489 flow. Second operand has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:39,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:39,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2023-11-24 22:05:39,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:39,925 INFO L124 PetriNetUnfolderBase]: 725/1588 cut-off events. [2023-11-24 22:05:39,925 INFO L125 PetriNetUnfolderBase]: For 3143/3143 co-relation queries the response was YES. [2023-11-24 22:05:39,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4821 conditions, 1588 events. 725/1588 cut-off events. For 3143/3143 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 9556 event pairs, 166 based on Foata normal form. 0/1564 useless extension candidates. Maximal degree in co-relation 4797. Up to 712 conditions per place. [2023-11-24 22:05:39,944 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 89 selfloop transitions, 23 changer transitions 12/130 dead transitions. [2023-11-24 22:05:39,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 130 transitions, 992 flow [2023-11-24 22:05:39,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 22:05:39,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 22:05:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2023-11-24 22:05:39,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4373522458628842 [2023-11-24 22:05:39,946 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 185 transitions. [2023-11-24 22:05:39,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 185 transitions. [2023-11-24 22:05:39,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:39,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 185 transitions. [2023-11-24 22:05:39,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.555555555555557) internal successors, (185), 9 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:39,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:39,950 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 47.0) internal successors, (470), 10 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:39,950 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 489 flow. Second operand 9 states and 185 transitions. [2023-11-24 22:05:39,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 130 transitions, 992 flow [2023-11-24 22:05:39,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 917 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-24 22:05:39,972 INFO L231 Difference]: Finished difference. Result has 91 places, 82 transitions, 628 flow [2023-11-24 22:05:39,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=628, PETRI_PLACES=91, PETRI_TRANSITIONS=82} [2023-11-24 22:05:39,974 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2023-11-24 22:05:39,974 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 82 transitions, 628 flow [2023-11-24 22:05:39,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.11111111111111) internal successors, (109), 9 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:05:39,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:39,977 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] [2023-11-24 22:05:39,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:05:39,978 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 22:05:39,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash -122252151, now seen corresponding path program 1 times [2023-11-24 22:05:39,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:39,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356693835] [2023-11-24 22:05:39,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:39,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:41,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356693835] [2023-11-24 22:05:41,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356693835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:05:41,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008585136] [2023-11-24 22:05:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:41,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:05:41,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:05:41,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:05:41,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58b442ba-5102-47c0-ab33-88b76d16b14b/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 22:05:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:42,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-24 22:05:42,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:05:42,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2023-11-24 22:05:42,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 183 [2023-11-24 22:05:42,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 22 [2023-11-24 22:05:42,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 22:05:42,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 135 [2023-11-24 22:05:42,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:05:42,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 43 [2023-11-24 22:05:43,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 45 [2023-11-24 22:05:43,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 65 [2023-11-24 22:05:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:05:43,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:05:44,253 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-24 22:05:44,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-24 22:05:44,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:05:44,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-24 22:05:56,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:05:56,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2023-11-24 22:05:56,113 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-24 22:05:56,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 18 [2023-11-24 22:06:08,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-24 22:06:08,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2023-11-24 22:06:08,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-24 22:06:08,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2023-11-24 22:06:08,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-24 22:06:08,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2023-11-24 22:06:08,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-24 22:06:08,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2023-11-24 22:06:08,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-24 22:06:08,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2023-11-24 22:06:08,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-24 22:06:08,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 114 [2023-11-24 22:06:08,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2023-11-24 22:06:08,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2023-11-24 22:06:08,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2023-11-24 22:06:08,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2023-11-24 22:06:08,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-24 22:06:08,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2023-11-24 22:06:08,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18