./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_power.opt.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_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/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_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/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_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:28:48,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:28:48,577 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:28:48,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:28:48,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:28:48,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:28:48,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:28:48,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:28:48,646 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:28:48,652 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:28:48,653 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:28:48,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:28:48,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:28:48,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:28:48,657 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:28:48,658 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:28:48,658 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:28:48,659 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:28:48,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:28:48,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:28:48,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:28:48,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:28:48,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:28:48,663 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:28:48,663 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:28:48,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:28:48,664 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:28:48,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:28:48,666 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:28:48,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:28:48,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:28:48,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:48,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:28:48,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:28:48,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:28:48,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:28:48,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:28:48,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:28:48,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:28:48,671 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:28:48,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:28:48,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:28:48,672 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_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2023-11-24 21:28:48,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:28:49,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:28:49,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:28:49,015 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:28:49,015 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:28:49,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2023-11-24 21:28:52,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:28:52,512 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:28:52,513 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2023-11-24 21:28:52,532 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/data/0539e4328/44c22e971e0a471d9a14c1d98bda1ac3/FLAGf48fd1278 [2023-11-24 21:28:52,549 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/data/0539e4328/44c22e971e0a471d9a14c1d98bda1ac3 [2023-11-24 21:28:52,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:28:52,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:28:52,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:52,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:28:52,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:28:52,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:52" (1/1) ... [2023-11-24 21:28:52,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27e99635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:52, skipping insertion in model container [2023-11-24 21:28:52,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:52" (1/1) ... [2023-11-24 21:28:52,651 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:52,823 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_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2023-11-24 21:28:53,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:53,182 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:28:53,198 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_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2023-11-24 21:28:53,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:53,343 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:28:53,343 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:28:53,351 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:28:53,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53 WrapperNode [2023-11-24 21:28:53,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:53,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:53,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:28:53,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:28:53,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,463 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2023-11-24 21:28:53,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:53,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:28:53,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:28:53,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:28:53,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,534 INFO L175 MemorySlicer]: Split 30 memory accesses to 6 slices as follows [2, 1, 1, 1, 24, 1]. 80 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 0, 1, 0]. The 12 writes are split as follows [0, 1, 1, 1, 8, 1]. [2023-11-24 21:28:53,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,566 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:28:53,597 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:28:53,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:28:53,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:28:53,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (1/1) ... [2023-11-24 21:28:53,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:53,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:53,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:28:53,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb8875a0-5d52-43f9-9d61-f01bb4cc4445/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:28:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:28:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:28:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:28:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:28:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:28:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-24 21:28:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:28:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:28:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:28:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:28:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:28:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-24 21:28:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:28:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:28:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:28:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:28:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:28:53,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:28:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:28:53,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:28:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:28:53,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:28:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 21:28:53,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 21:28:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:28:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:28:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:28:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:28:53,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:28:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-24 21:28:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:28:53,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:28:53,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:28:53,707 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 21:28:53,950 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:28:53,953 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:28:54,706 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:28:55,216 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:28:55,216 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:28:55,217 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:55 BoogieIcfgContainer [2023-11-24 21:28:55,217 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:28:55,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:28:55,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:28:55,223 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:28:55,224 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:28:52" (1/3) ... [2023-11-24 21:28:55,225 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8e4ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:55, skipping insertion in model container [2023-11-24 21:28:55,225 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:53" (2/3) ... [2023-11-24 21:28:55,226 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8e4ef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:55, skipping insertion in model container [2023-11-24 21:28:55,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:55" (3/3) ... [2023-11-24 21:28:55,228 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2023-11-24 21:28:55,239 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:28:55,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:28:55,251 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:28:55,251 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:28:55,348 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:28:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 46 transitions, 108 flow [2023-11-24 21:28:55,444 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2023-11-24 21:28:55,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:28:55,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-11-24 21:28:55,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 46 transitions, 108 flow [2023-11-24 21:28:55,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 42 transitions, 96 flow [2023-11-24 21:28:55,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:28:55,487 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;@479954af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:28:55,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-24 21:28:55,512 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:28:55,512 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-24 21:28:55,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:28:55,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:55,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:28:55,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:28:55,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:55,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1394224467, now seen corresponding path program 1 times [2023-11-24 21:28:55,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:55,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179532555] [2023-11-24 21:28:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:55,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:56,163 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 21:28:56,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:56,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179532555] [2023-11-24 21:28:56,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179532555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:56,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:56,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:28:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657978082] [2023-11-24 21:28:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:56,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:56,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:56,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2023-11-24 21:28:56,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 21:28:56,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:56,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2023-11-24 21:28:56,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:57,964 INFO L124 PetriNetUnfolderBase]: 2959/4656 cut-off events. [2023-11-24 21:28:57,965 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-24 21:28:57,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8884 conditions, 4656 events. 2959/4656 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29719 event pairs, 868 based on Foata normal form. 144/4716 useless extension candidates. Maximal degree in co-relation 8872. Up to 3274 conditions per place. [2023-11-24 21:28:58,022 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 37 selfloop transitions, 2 changer transitions 2/57 dead transitions. [2023-11-24 21:28:58,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 214 flow [2023-11-24 21:28:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2023-11-24 21:28:58,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7536231884057971 [2023-11-24 21:28:58,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 104 transitions. [2023-11-24 21:28:58,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 104 transitions. [2023-11-24 21:28:58,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:58,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 104 transitions. [2023-11-24 21:28:58,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 21:28:58,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 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 21:28:58,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 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 21:28:58,061 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 3 states and 104 transitions. [2023-11-24 21:28:58,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 214 flow [2023-11-24 21:28:58,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:28:58,078 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 90 flow [2023-11-24 21:28:58,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-11-24 21:28:58,088 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -3 predicate places. [2023-11-24 21:28:58,088 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 90 flow [2023-11-24 21:28:58,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 21:28:58,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:58,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:58,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:28:58,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:28:58,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1218788694, now seen corresponding path program 1 times [2023-11-24 21:28:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:58,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675562528] [2023-11-24 21:28:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:58,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:58,500 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 21:28:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:58,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675562528] [2023-11-24 21:28:58,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675562528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:58,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:58,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:28:58,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114155416] [2023-11-24 21:28:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:58,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:28:58,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:28:58,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:28:58,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2023-11-24 21:28:58,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 21:28:58,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:58,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2023-11-24 21:28:58,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:01,721 INFO L124 PetriNetUnfolderBase]: 7353/10871 cut-off events. [2023-11-24 21:29:01,722 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2023-11-24 21:29:01,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21747 conditions, 10871 events. 7353/10871 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 73499 event pairs, 1551 based on Foata normal form. 0/10643 useless extension candidates. Maximal degree in co-relation 21737. Up to 6097 conditions per place. [2023-11-24 21:29:01,813 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 36 selfloop transitions, 3 changer transitions 58/109 dead transitions. [2023-11-24 21:29:01,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 109 transitions, 438 flow [2023-11-24 21:29:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:29:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:29:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2023-11-24 21:29:01,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6168478260869565 [2023-11-24 21:29:01,824 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 227 transitions. [2023-11-24 21:29:01,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 227 transitions. [2023-11-24 21:29:01,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:01,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 227 transitions. [2023-11-24 21:29:01,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 0 states have call successors, (0), 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 21:29:01,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 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 21:29:01,834 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 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 21:29:01,834 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 90 flow. Second operand 8 states and 227 transitions. [2023-11-24 21:29:01,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 109 transitions, 438 flow [2023-11-24 21:29:01,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:29:01,839 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 119 flow [2023-11-24 21:29:01,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-11-24 21:29:01,840 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-11-24 21:29:01,841 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 119 flow [2023-11-24 21:29:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 21:29:01,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:01,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:01,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:29:01,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:01,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1929577749, now seen corresponding path program 1 times [2023-11-24 21:29:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:01,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737037809] [2023-11-24 21:29:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:01,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:01,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:02,173 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 21:29:02,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737037809] [2023-11-24 21:29:02,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737037809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:02,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:02,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:29:02,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289610882] [2023-11-24 21:29:02,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:02,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:29:02,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:02,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:29:02,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:02,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 46 [2023-11-24 21:29:02,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 21:29:02,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:02,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 46 [2023-11-24 21:29:02,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:05,091 INFO L124 PetriNetUnfolderBase]: 5798/9193 cut-off events. [2023-11-24 21:29:05,092 INFO L125 PetriNetUnfolderBase]: For 3000/3000 co-relation queries the response was YES. [2023-11-24 21:29:05,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19743 conditions, 9193 events. 5798/9193 cut-off events. For 3000/3000 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 64040 event pairs, 1011 based on Foata normal form. 288/9242 useless extension candidates. Maximal degree in co-relation 19728. Up to 5254 conditions per place. [2023-11-24 21:29:05,160 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 40 selfloop transitions, 2 changer transitions 41/98 dead transitions. [2023-11-24 21:29:05,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 417 flow [2023-11-24 21:29:05,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:29:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:29:05,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2023-11-24 21:29:05,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6335403726708074 [2023-11-24 21:29:05,163 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 204 transitions. [2023-11-24 21:29:05,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 204 transitions. [2023-11-24 21:29:05,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:05,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 204 transitions. [2023-11-24 21:29:05,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 0 states have call successors, (0), 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 21:29:05,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:05,166 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:05,167 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 119 flow. Second operand 7 states and 204 transitions. [2023-11-24 21:29:05,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 417 flow [2023-11-24 21:29:05,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 406 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-24 21:29:05,198 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 128 flow [2023-11-24 21:29:05,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2023-11-24 21:29:05,199 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2023-11-24 21:29:05,199 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 128 flow [2023-11-24 21:29:05,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 21:29:05,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:05,200 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] [2023-11-24 21:29:05,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:29:05,200 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:05,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -741596756, now seen corresponding path program 1 times [2023-11-24 21:29:05,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:05,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400833455] [2023-11-24 21:29:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:05,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:05,566 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 21:29:05,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:05,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400833455] [2023-11-24 21:29:05,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400833455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:05,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:05,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:29:05,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480128731] [2023-11-24 21:29:05,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:05,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:29:05,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:29:05,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:05,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2023-11-24 21:29:05,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 21:29:05,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:05,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2023-11-24 21:29:05,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:07,273 INFO L124 PetriNetUnfolderBase]: 4417/6789 cut-off events. [2023-11-24 21:29:07,273 INFO L125 PetriNetUnfolderBase]: For 4824/4824 co-relation queries the response was YES. [2023-11-24 21:29:07,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16192 conditions, 6789 events. 4417/6789 cut-off events. For 4824/4824 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44448 event pairs, 1165 based on Foata normal form. 180/6816 useless extension candidates. Maximal degree in co-relation 16173. Up to 4042 conditions per place. [2023-11-24 21:29:07,339 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 34 selfloop transitions, 2 changer transitions 37/89 dead transitions. [2023-11-24 21:29:07,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 390 flow [2023-11-24 21:29:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:29:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:29:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2023-11-24 21:29:07,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242236024844721 [2023-11-24 21:29:07,342 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 201 transitions. [2023-11-24 21:29:07,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 201 transitions. [2023-11-24 21:29:07,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:07,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 201 transitions. [2023-11-24 21:29:07,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 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 21:29:07,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:07,346 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:07,346 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 128 flow. Second operand 7 states and 201 transitions. [2023-11-24 21:29:07,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 390 flow [2023-11-24 21:29:07,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 89 transitions, 370 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-24 21:29:07,410 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 132 flow [2023-11-24 21:29:07,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2023-11-24 21:29:07,411 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2023-11-24 21:29:07,412 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 132 flow [2023-11-24 21:29:07,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 21:29:07,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:07,412 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] [2023-11-24 21:29:07,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:29:07,413 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:07,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash -623067990, now seen corresponding path program 1 times [2023-11-24 21:29:07,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:07,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003019037] [2023-11-24 21:29:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:07,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,762 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 21:29:07,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:07,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003019037] [2023-11-24 21:29:07,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003019037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:07,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:07,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:29:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380600220] [2023-11-24 21:29:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:07,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:29:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:29:07,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:07,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2023-11-24 21:29:07,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 21:29:07,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:07,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2023-11-24 21:29:07,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:10,040 INFO L124 PetriNetUnfolderBase]: 7302/10928 cut-off events. [2023-11-24 21:29:10,040 INFO L125 PetriNetUnfolderBase]: For 7326/7350 co-relation queries the response was YES. [2023-11-24 21:29:10,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26336 conditions, 10928 events. 7302/10928 cut-off events. For 7326/7350 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 74734 event pairs, 2895 based on Foata normal form. 276/11192 useless extension candidates. Maximal degree in co-relation 26316. Up to 4727 conditions per place. [2023-11-24 21:29:10,122 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 41 selfloop transitions, 3 changer transitions 41/97 dead transitions. [2023-11-24 21:29:10,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 97 transitions, 460 flow [2023-11-24 21:29:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:29:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:29:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2023-11-24 21:29:10,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6149068322981367 [2023-11-24 21:29:10,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 198 transitions. [2023-11-24 21:29:10,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 198 transitions. [2023-11-24 21:29:10,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:10,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 198 transitions. [2023-11-24 21:29:10,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 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 21:29:10,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:10,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:10,128 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 132 flow. Second operand 7 states and 198 transitions. [2023-11-24 21:29:10,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 97 transitions, 460 flow [2023-11-24 21:29:10,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 426 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-24 21:29:10,244 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 137 flow [2023-11-24 21:29:10,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-11-24 21:29:10,245 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-11-24 21:29:10,245 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 137 flow [2023-11-24 21:29:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 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 21:29:10,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:10,246 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 21:29:10,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:29:10,246 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:10,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1868224749, now seen corresponding path program 1 times [2023-11-24 21:29:10,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:10,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118355577] [2023-11-24 21:29:10,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:10,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:11,708 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 21:29:11,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:11,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118355577] [2023-11-24 21:29:11,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118355577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:11,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:11,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:29:11,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757016085] [2023-11-24 21:29:11,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:11,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:29:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:29:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:29:11,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2023-11-24 21:29:11,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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 21:29:11,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:11,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2023-11-24 21:29:11,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:13,956 INFO L124 PetriNetUnfolderBase]: 5695/9062 cut-off events. [2023-11-24 21:29:13,957 INFO L125 PetriNetUnfolderBase]: For 7745/7772 co-relation queries the response was YES. [2023-11-24 21:29:14,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21202 conditions, 9062 events. 5695/9062 cut-off events. For 7745/7772 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 64887 event pairs, 2261 based on Foata normal form. 258/9168 useless extension candidates. Maximal degree in co-relation 21182. Up to 6221 conditions per place. [2023-11-24 21:29:14,036 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 44 selfloop transitions, 12 changer transitions 43/115 dead transitions. [2023-11-24 21:29:14,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 115 transitions, 528 flow [2023-11-24 21:29:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:29:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:29:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 300 transitions. [2023-11-24 21:29:14,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928853754940712 [2023-11-24 21:29:14,040 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 300 transitions. [2023-11-24 21:29:14,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 300 transitions. [2023-11-24 21:29:14,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:14,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 300 transitions. [2023-11-24 21:29:14,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 27.272727272727273) internal successors, (300), 11 states have internal predecessors, (300), 0 states have call successors, (0), 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 21:29:14,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 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 21:29:14,045 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 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 21:29:14,045 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 137 flow. Second operand 11 states and 300 transitions. [2023-11-24 21:29:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 115 transitions, 528 flow [2023-11-24 21:29:14,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 115 transitions, 501 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-24 21:29:14,147 INFO L231 Difference]: Finished difference. Result has 74 places, 51 transitions, 221 flow [2023-11-24 21:29:14,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=221, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2023-11-24 21:29:14,150 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2023-11-24 21:29:14,150 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 221 flow [2023-11-24 21:29:14,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 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 21:29:14,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:14,151 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 21:29:14,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:29:14,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:14,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1388031473, now seen corresponding path program 1 times [2023-11-24 21:29:14,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:14,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093979759] [2023-11-24 21:29:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:14,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:14,585 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 21:29:14,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093979759] [2023-11-24 21:29:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093979759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:29:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449131129] [2023-11-24 21:29:14,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:14,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:29:14,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:29:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:29:14,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2023-11-24 21:29:14,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:29:14,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:14,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2023-11-24 21:29:14,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:18,510 INFO L124 PetriNetUnfolderBase]: 12600/19310 cut-off events. [2023-11-24 21:29:18,510 INFO L125 PetriNetUnfolderBase]: For 31488/31520 co-relation queries the response was YES. [2023-11-24 21:29:18,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58931 conditions, 19310 events. 12600/19310 cut-off events. For 31488/31520 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 140949 event pairs, 1805 based on Foata normal form. 269/19498 useless extension candidates. Maximal degree in co-relation 58905. Up to 8182 conditions per place. [2023-11-24 21:29:18,649 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 73 selfloop transitions, 4 changer transitions 30/118 dead transitions. [2023-11-24 21:29:18,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 753 flow [2023-11-24 21:29:18,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:29:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:29:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2023-11-24 21:29:18,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195652173913043 [2023-11-24 21:29:18,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 171 transitions. [2023-11-24 21:29:18,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 171 transitions. [2023-11-24 21:29:18,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:18,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 171 transitions. [2023-11-24 21:29:18,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 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 21:29:18,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 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 21:29:18,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 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 21:29:18,659 INFO L175 Difference]: Start difference. First operand has 74 places, 51 transitions, 221 flow. Second operand 6 states and 171 transitions. [2023-11-24 21:29:18,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 753 flow [2023-11-24 21:29:18,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 118 transitions, 741 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-24 21:29:18,802 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 230 flow [2023-11-24 21:29:18,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2023-11-24 21:29:18,803 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2023-11-24 21:29:18,804 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 230 flow [2023-11-24 21:29:18,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:29:18,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:18,804 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 21:29:18,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:29:18,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:18,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash -65696847, now seen corresponding path program 2 times [2023-11-24 21:29:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:18,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128977937] [2023-11-24 21:29:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:20,370 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 21:29:20,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:20,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128977937] [2023-11-24 21:29:20,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128977937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:20,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:20,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:29:20,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703261939] [2023-11-24 21:29:20,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:20,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:29:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:20,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:29:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:29:20,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 46 [2023-11-24 21:29:20,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 230 flow. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 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 21:29:20,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:20,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 46 [2023-11-24 21:29:20,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:22,834 INFO L124 PetriNetUnfolderBase]: 5770/9184 cut-off events. [2023-11-24 21:29:22,834 INFO L125 PetriNetUnfolderBase]: For 18065/18225 co-relation queries the response was YES. [2023-11-24 21:29:22,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28301 conditions, 9184 events. 5770/9184 cut-off events. For 18065/18225 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 64658 event pairs, 2554 based on Foata normal form. 271/9323 useless extension candidates. Maximal degree in co-relation 28274. Up to 5232 conditions per place. [2023-11-24 21:29:22,900 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 53 selfloop transitions, 17 changer transitions 49/135 dead transitions. [2023-11-24 21:29:22,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 135 transitions, 821 flow [2023-11-24 21:29:22,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:29:22,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:29:22,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 310 transitions. [2023-11-24 21:29:22,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126482213438735 [2023-11-24 21:29:22,902 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 310 transitions. [2023-11-24 21:29:22,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 310 transitions. [2023-11-24 21:29:22,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:22,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 310 transitions. [2023-11-24 21:29:22,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 28.181818181818183) internal successors, (310), 11 states have internal predecessors, (310), 0 states have call successors, (0), 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 21:29:22,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 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 21:29:22,906 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 0 states have call successors, (0), 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 21:29:22,906 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 230 flow. Second operand 11 states and 310 transitions. [2023-11-24 21:29:22,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 135 transitions, 821 flow [2023-11-24 21:29:22,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 135 transitions, 797 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-24 21:29:22,942 INFO L231 Difference]: Finished difference. Result has 84 places, 58 transitions, 352 flow [2023-11-24 21:29:22,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=352, PETRI_PLACES=84, PETRI_TRANSITIONS=58} [2023-11-24 21:29:22,943 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2023-11-24 21:29:22,943 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 58 transitions, 352 flow [2023-11-24 21:29:22,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 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 21:29:22,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:22,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:22,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:29:22,944 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:22,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash -395253949, now seen corresponding path program 1 times [2023-11-24 21:29:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620045615] [2023-11-24 21:29:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:23,188 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 21:29:23,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:23,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620045615] [2023-11-24 21:29:23,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620045615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:23,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:23,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:29:23,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051797262] [2023-11-24 21:29:23,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:23,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:29:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:29:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:29:23,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2023-11-24 21:29:23,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 58 transitions, 352 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 21:29:23,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:23,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2023-11-24 21:29:23,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:27,525 INFO L124 PetriNetUnfolderBase]: 16953/24139 cut-off events. [2023-11-24 21:29:27,525 INFO L125 PetriNetUnfolderBase]: For 97994/98413 co-relation queries the response was YES. [2023-11-24 21:29:27,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92329 conditions, 24139 events. 16953/24139 cut-off events. For 97994/98413 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 154097 event pairs, 2223 based on Foata normal form. 846/24862 useless extension candidates. Maximal degree in co-relation 92296. Up to 13392 conditions per place. [2023-11-24 21:29:27,749 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 99 selfloop transitions, 6 changer transitions 1/118 dead transitions. [2023-11-24 21:29:27,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 970 flow [2023-11-24 21:29:27,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:29:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:29:27,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-24 21:29:27,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2023-11-24 21:29:27,751 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-24 21:29:27,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-24 21:29:27,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:27,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-24 21:29:27,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 21:29:27,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:29:27,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:29:27,753 INFO L175 Difference]: Start difference. First operand has 84 places, 58 transitions, 352 flow. Second operand 4 states and 120 transitions. [2023-11-24 21:29:27,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 970 flow [2023-11-24 21:29:27,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 871 flow, removed 28 selfloop flow, removed 6 redundant places. [2023-11-24 21:29:27,862 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 349 flow [2023-11-24 21:29:27,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2023-11-24 21:29:27,863 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2023-11-24 21:29:27,863 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 349 flow [2023-11-24 21:29:27,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 21:29:27,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:27,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:27,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:29:27,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:27,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:27,865 INFO L85 PathProgramCache]: Analyzing trace with hash 426851872, now seen corresponding path program 1 times [2023-11-24 21:29:27,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:27,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603889489] [2023-11-24 21:29:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:27,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:28,113 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 21:29:28,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:28,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603889489] [2023-11-24 21:29:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603889489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:28,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:28,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:29:28,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644309966] [2023-11-24 21:29:28,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:28,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:29:28,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:28,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:29:28,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:28,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2023-11-24 21:29:28,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 62 transitions, 349 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 21:29:28,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:28,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2023-11-24 21:29:28,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:31,041 INFO L124 PetriNetUnfolderBase]: 12874/18489 cut-off events. [2023-11-24 21:29:31,041 INFO L125 PetriNetUnfolderBase]: For 54920/55267 co-relation queries the response was YES. [2023-11-24 21:29:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67560 conditions, 18489 events. 12874/18489 cut-off events. For 54920/55267 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 114255 event pairs, 958 based on Foata normal form. 782/19181 useless extension candidates. Maximal degree in co-relation 67529. Up to 8301 conditions per place. [2023-11-24 21:29:31,192 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 108 selfloop transitions, 10 changer transitions 1/131 dead transitions. [2023-11-24 21:29:31,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 1003 flow [2023-11-24 21:29:31,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:29:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:29:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2023-11-24 21:29:31,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6608695652173913 [2023-11-24 21:29:31,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 152 transitions. [2023-11-24 21:29:31,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 152 transitions. [2023-11-24 21:29:31,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:31,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 152 transitions. [2023-11-24 21:29:31,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 21:29:31,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 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 21:29:31,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 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 21:29:31,197 INFO L175 Difference]: Start difference. First operand has 77 places, 62 transitions, 349 flow. Second operand 5 states and 152 transitions. [2023-11-24 21:29:31,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 1003 flow [2023-11-24 21:29:31,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 131 transitions, 956 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-11-24 21:29:31,245 INFO L231 Difference]: Finished difference. Result has 79 places, 65 transitions, 382 flow [2023-11-24 21:29:31,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=382, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2023-11-24 21:29:31,246 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 25 predicate places. [2023-11-24 21:29:31,247 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 382 flow [2023-11-24 21:29:31,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 21:29:31,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:31,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:31,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:29:31,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:31,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1793776775, now seen corresponding path program 1 times [2023-11-24 21:29:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525012109] [2023-11-24 21:29:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:31,590 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 21:29:31,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:31,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525012109] [2023-11-24 21:29:31,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525012109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:31,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:31,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:29:31,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399862505] [2023-11-24 21:29:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:31,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:29:31,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:29:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:29:31,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2023-11-24 21:29:31,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 382 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 21:29:31,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:31,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2023-11-24 21:29:31,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:33,448 INFO L124 PetriNetUnfolderBase]: 8143/11692 cut-off events. [2023-11-24 21:29:33,448 INFO L125 PetriNetUnfolderBase]: For 29755/30050 co-relation queries the response was YES. [2023-11-24 21:29:33,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41974 conditions, 11692 events. 8143/11692 cut-off events. For 29755/30050 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 66508 event pairs, 489 based on Foata normal form. 536/12145 useless extension candidates. Maximal degree in co-relation 41943. Up to 3584 conditions per place. [2023-11-24 21:29:33,529 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 117 selfloop transitions, 14 changer transitions 1/144 dead transitions. [2023-11-24 21:29:33,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 144 transitions, 1100 flow [2023-11-24 21:29:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:29:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:29:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2023-11-24 21:29:33,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:29:33,531 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 184 transitions. [2023-11-24 21:29:33,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 184 transitions. [2023-11-24 21:29:33,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:33,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 184 transitions. [2023-11-24 21:29:33,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 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 21:29:33,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 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 21:29:33,533 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 46.0) internal successors, (322), 7 states have internal predecessors, (322), 0 states have call successors, (0), 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 21:29:33,533 INFO L175 Difference]: Start difference. First operand has 79 places, 65 transitions, 382 flow. Second operand 6 states and 184 transitions. [2023-11-24 21:29:33,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 144 transitions, 1100 flow [2023-11-24 21:29:33,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 144 transitions, 1070 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-24 21:29:33,593 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 432 flow [2023-11-24 21:29:33,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2023-11-24 21:29:33,594 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2023-11-24 21:29:33,594 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 432 flow [2023-11-24 21:29:33,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 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 21:29:33,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:33,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:33,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:29:33,595 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:33,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2141285254, now seen corresponding path program 1 times [2023-11-24 21:29:33,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:33,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903531688] [2023-11-24 21:29:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:33,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:34,005 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 21:29:34,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:34,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903531688] [2023-11-24 21:29:34,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903531688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:34,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:34,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:29:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240204795] [2023-11-24 21:29:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:34,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:29:34,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:29:34,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:29:34,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2023-11-24 21:29:34,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 21:29:34,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:34,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2023-11-24 21:29:34,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:35,353 INFO L124 PetriNetUnfolderBase]: 5595/7908 cut-off events. [2023-11-24 21:29:35,353 INFO L125 PetriNetUnfolderBase]: For 24307/24594 co-relation queries the response was YES. [2023-11-24 21:29:35,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30055 conditions, 7908 events. 5595/7908 cut-off events. For 24307/24594 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 42082 event pairs, 319 based on Foata normal form. 220/8045 useless extension candidates. Maximal degree in co-relation 30023. Up to 2572 conditions per place. [2023-11-24 21:29:35,404 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 94 selfloop transitions, 18 changer transitions 13/137 dead transitions. [2023-11-24 21:29:35,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 137 transitions, 1037 flow [2023-11-24 21:29:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:29:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:29:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2023-11-24 21:29:35,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024844720496895 [2023-11-24 21:29:35,405 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 194 transitions. [2023-11-24 21:29:35,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 194 transitions. [2023-11-24 21:29:35,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:35,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 194 transitions. [2023-11-24 21:29:35,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 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 21:29:35,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:35,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:35,408 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 432 flow. Second operand 7 states and 194 transitions. [2023-11-24 21:29:35,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 137 transitions, 1037 flow [2023-11-24 21:29:35,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 137 transitions, 944 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-11-24 21:29:35,509 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 384 flow [2023-11-24 21:29:35,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2023-11-24 21:29:35,510 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2023-11-24 21:29:35,511 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 384 flow [2023-11-24 21:29:35,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 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 21:29:35,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:35,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:35,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:29:35,511 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:35,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash 154138943, now seen corresponding path program 1 times [2023-11-24 21:29:35,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:35,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500735115] [2023-11-24 21:29:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:35,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:35,877 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 21:29:35,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:35,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500735115] [2023-11-24 21:29:35,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500735115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:35,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:35,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:29:35,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389910380] [2023-11-24 21:29:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:35,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:29:35,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:29:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:29:35,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2023-11-24 21:29:35,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 21:29:35,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:29:35,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2023-11-24 21:29:35,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:29:37,839 INFO L124 PetriNetUnfolderBase]: 6502/10305 cut-off events. [2023-11-24 21:29:37,839 INFO L125 PetriNetUnfolderBase]: For 18627/18841 co-relation queries the response was YES. [2023-11-24 21:29:37,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33788 conditions, 10305 events. 6502/10305 cut-off events. For 18627/18841 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 70758 event pairs, 1730 based on Foata normal form. 24/9874 useless extension candidates. Maximal degree in co-relation 33760. Up to 2788 conditions per place. [2023-11-24 21:29:37,919 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 89 selfloop transitions, 4 changer transitions 34/150 dead transitions. [2023-11-24 21:29:37,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 1084 flow [2023-11-24 21:29:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:29:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:29:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2023-11-24 21:29:37,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2023-11-24 21:29:37,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 186 transitions. [2023-11-24 21:29:37,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 186 transitions. [2023-11-24 21:29:37,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:29:37,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 186 transitions. [2023-11-24 21:29:37,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 0 states have call successors, (0), 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 21:29:37,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:37,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 46.0) internal successors, (368), 8 states have internal predecessors, (368), 0 states have call successors, (0), 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 21:29:37,925 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 384 flow. Second operand 7 states and 186 transitions. [2023-11-24 21:29:37,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 1084 flow [2023-11-24 21:29:38,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 150 transitions, 888 flow, removed 64 selfloop flow, removed 14 redundant places. [2023-11-24 21:29:38,076 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 282 flow [2023-11-24 21:29:38,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-11-24 21:29:38,077 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2023-11-24 21:29:38,077 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 282 flow [2023-11-24 21:29:38,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 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 21:29:38,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:29:38,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:38,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:29:38,079 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-11-24 21:29:38,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:38,079 INFO L85 PathProgramCache]: Analyzing trace with hash -607855821, now seen corresponding path program 2 times [2023-11-24 21:29:38,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:38,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683135570] [2023-11-24 21:29:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:38,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat