./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya --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 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:03:01,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:03:01,624 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:03:01,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:03:01,630 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:03:01,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:03:01,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:03:01,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:03:01,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:03:01,656 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:03:01,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:03:01,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:03:01,658 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:03:01,659 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:03:01,659 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:03:01,660 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:03:01,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:03:01,661 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:03:01,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:03:01,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:03:01,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:03:01,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:03:01,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:03:01,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:03:01,665 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:03:01,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:03:01,666 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:03:01,666 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:03:01,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:03:01,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:03:01,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:03:01,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:03:01,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:03:01,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:03:01,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:03:01,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:03:01,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:03:01,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:03:01,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:03:01,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:03:01,670 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:03:01,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:03:01,671 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_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2023-11-29 06:03:01,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:03:01,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:03:01,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:03:01,927 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:03:01,928 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:03:01,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-11-29 06:03:04,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:03:04,850 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:03:04,850 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-11-29 06:03:04,857 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/data/bd5c81ddf/16671d9c7755419383ed1cfb27acc086/FLAGf2fc7109f [2023-11-29 06:03:04,870 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/data/bd5c81ddf/16671d9c7755419383ed1cfb27acc086 [2023-11-29 06:03:04,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:03:04,873 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:03:04,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:03:04,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:03:04,880 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:03:04,880 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:03:04" (1/1) ... [2023-11-29 06:03:04,881 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ba3b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:04, skipping insertion in model container [2023-11-29 06:03:04,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:03:04" (1/1) ... [2023-11-29 06:03:04,910 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:03:05,058 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_223380b1-8882-4433-913d-1b01a6c89961/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2023-11-29 06:03:05,063 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:03:05,075 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:03:05,101 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_223380b1-8882-4433-913d-1b01a6c89961/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2023-11-29 06:03:05,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:03:05,110 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:03:05,110 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:03:05,117 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:03:05,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05 WrapperNode [2023-11-29 06:03:05,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:03:05,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:03:05,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:03:05,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:03:05,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,162 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2023-11-29 06:03:05,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:03:05,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:03:05,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:03:05,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:03:05,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,189 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-29 06:03:05,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:03:05,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:03:05,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:03:05,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:03:05,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (1/1) ... [2023-11-29 06:03:05,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:03:05,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:03:05,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:03:05,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_223380b1-8882-4433-913d-1b01a6c89961/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:03:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:03:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 06:03:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 06:03:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 06:03:05,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 06:03:05,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 06:03:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 06:03:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-29 06:03:05,274 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-29 06:03:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:03:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:03:05,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:03:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:03:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:03:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:03:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:03:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:03:05,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:03:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:03:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 06:03:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 06:03:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 06:03:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:03:05,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:03:05,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:03:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:03:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:03:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:03:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 06:03:05,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:03:05,279 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 06:03:05,397 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:03:05,398 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:03:05,630 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:03:05,817 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:03:05,817 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:03:05,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:03:05 BoogieIcfgContainer [2023-11-29 06:03:05,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:03:05,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:03:05,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:03:05,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:03:05,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:03:04" (1/3) ... [2023-11-29 06:03:05,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784c8100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:03:05, skipping insertion in model container [2023-11-29 06:03:05,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:03:05" (2/3) ... [2023-11-29 06:03:05,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784c8100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:03:05, skipping insertion in model container [2023-11-29 06:03:05,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:03:05" (3/3) ... [2023-11-29 06:03:05,826 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-11-29 06:03:05,835 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 06:03:05,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:03:05,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:03:05,845 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 06:03:05,898 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-29 06:03:05,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 55 transitions, 138 flow [2023-11-29 06:03:05,977 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2023-11-29 06:03:05,978 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 06:03:05,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 0/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-29 06:03:05,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 55 transitions, 138 flow [2023-11-29 06:03:05,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 124 flow [2023-11-29 06:03:05,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:03:06,001 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;@30385608, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:03:06,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 06:03:06,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 06:03:06,022 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-11-29 06:03:06,022 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-29 06:03:06,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:06,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:06,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:06,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash 542912041, now seen corresponding path program 1 times [2023-11-29 06:03:06,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:06,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047628984] [2023-11-29 06:03:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:06,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:06,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047628984] [2023-11-29 06:03:06,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047628984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:06,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:06,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:03:06,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014681139] [2023-11-29 06:03:06,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:06,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:03:06,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:06,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:03:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:03:06,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2023-11-29 06:03:06,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:06,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:06,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2023-11-29 06:03:06,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:06,932 INFO L124 PetriNetUnfolderBase]: 711/1408 cut-off events. [2023-11-29 06:03:06,932 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-29 06:03:06,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1408 events. 711/1408 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8967 event pairs, 180 based on Foata normal form. 11/1350 useless extension candidates. Maximal degree in co-relation 2039. Up to 936 conditions per place. [2023-11-29 06:03:06,954 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 35 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-29 06:03:06,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 229 flow [2023-11-29 06:03:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:03:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:03:06,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-29 06:03:06,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2023-11-29 06:03:06,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-29 06:03:06,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-29 06:03:06,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:06,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-29 06:03:06,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-29 06:03:06,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:06,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:06,980 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 124 flow. Second operand 3 states and 122 transitions. [2023-11-29 06:03:06,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 229 flow [2023-11-29 06:03:06,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 207 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 06:03:06,990 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2023-11-29 06:03:06,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-29 06:03:06,995 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-11-29 06:03:06,996 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2023-11-29 06:03:06,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:06,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:06,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:03:06,997 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:06,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash 165876777, now seen corresponding path program 2 times [2023-11-29 06:03:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:06,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427002681] [2023-11-29 06:03:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:06,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:07,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427002681] [2023-11-29 06:03:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427002681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:07,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:07,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:03:07,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417235046] [2023-11-29 06:03:07,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:07,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:03:07,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:03:07,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:03:07,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2023-11-29 06:03:07,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:07,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:07,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2023-11-29 06:03:07,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:07,423 INFO L124 PetriNetUnfolderBase]: 665/1248 cut-off events. [2023-11-29 06:03:07,423 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-29 06:03:07,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1248 events. 665/1248 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7435 event pairs, 160 based on Foata normal form. 25/1260 useless extension candidates. Maximal degree in co-relation 2252. Up to 960 conditions per place. [2023-11-29 06:03:07,433 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 33 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-29 06:03:07,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 208 flow [2023-11-29 06:03:07,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:03:07,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:03:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-29 06:03:07,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-29 06:03:07,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-29 06:03:07,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-29 06:03:07,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:07,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-29 06:03:07,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2023-11-29 06:03:07,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:07,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:07,439 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 120 transitions. [2023-11-29 06:03:07,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 208 flow [2023-11-29 06:03:07,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:07,442 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 120 flow [2023-11-29 06:03:07,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-11-29 06:03:07,443 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2023-11-29 06:03:07,443 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 120 flow [2023-11-29 06:03:07,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:07,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:07,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:07,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:03:07,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:07,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:07,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1259325911, now seen corresponding path program 3 times [2023-11-29 06:03:07,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:07,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573720496] [2023-11-29 06:03:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:07,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:07,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:07,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573720496] [2023-11-29 06:03:07,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573720496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:07,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:07,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:03:07,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409457374] [2023-11-29 06:03:07,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:07,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:03:07,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:03:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:03:07,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2023-11-29 06:03:07,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:07,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:07,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2023-11-29 06:03:07,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:07,802 INFO L124 PetriNetUnfolderBase]: 581/1164 cut-off events. [2023-11-29 06:03:07,803 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-11-29 06:03:07,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 1164 events. 581/1164 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6886 event pairs, 176 based on Foata normal form. 28/1148 useless extension candidates. Maximal degree in co-relation 2215. Up to 756 conditions per place. [2023-11-29 06:03:07,813 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 33 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-29 06:03:07,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 212 flow [2023-11-29 06:03:07,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:03:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:03:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-29 06:03:07,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-29 06:03:07,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-29 06:03:07,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-29 06:03:07,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:07,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-29 06:03:07,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2023-11-29 06:03:07,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:07,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:07,819 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 120 flow. Second operand 3 states and 120 transitions. [2023-11-29 06:03:07,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 212 flow [2023-11-29 06:03:07,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:07,822 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 124 flow [2023-11-29 06:03:07,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-11-29 06:03:07,823 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-11-29 06:03:07,823 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 124 flow [2023-11-29 06:03:07,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:07,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:07,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:07,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:03:07,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:07,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1266027161, now seen corresponding path program 4 times [2023-11-29 06:03:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:07,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389176296] [2023-11-29 06:03:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:07,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:07,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389176296] [2023-11-29 06:03:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389176296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:07,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:03:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634378207] [2023-11-29 06:03:07,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:07,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:03:07,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:07,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:03:07,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:03:07,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 55 [2023-11-29 06:03:07,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:07,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:07,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 55 [2023-11-29 06:03:07,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:08,208 INFO L124 PetriNetUnfolderBase]: 575/1084 cut-off events. [2023-11-29 06:03:08,208 INFO L125 PetriNetUnfolderBase]: For 215/219 co-relation queries the response was YES. [2023-11-29 06:03:08,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 1084 events. 575/1084 cut-off events. For 215/219 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6284 event pairs, 140 based on Foata normal form. 20/1074 useless extension candidates. Maximal degree in co-relation 1954. Up to 840 conditions per place. [2023-11-29 06:03:08,218 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 35 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-29 06:03:08,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 61 transitions, 227 flow [2023-11-29 06:03:08,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:03:08,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 06:03:08,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2023-11-29 06:03:08,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2023-11-29 06:03:08,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2023-11-29 06:03:08,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2023-11-29 06:03:08,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:08,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2023-11-29 06:03:08,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2023-11-29 06:03:08,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:08,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 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) [2023-11-29 06:03:08,223 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 124 flow. Second operand 3 states and 122 transitions. [2023-11-29 06:03:08,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 61 transitions, 227 flow [2023-11-29 06:03:08,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 61 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:08,225 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 128 flow [2023-11-29 06:03:08,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-29 06:03:08,226 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-11-29 06:03:08,227 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 128 flow [2023-11-29 06:03:08,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 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) [2023-11-29 06:03:08,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:08,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:08,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:03:08,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:08,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:08,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1224954487, now seen corresponding path program 5 times [2023-11-29 06:03:08,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999758315] [2023-11-29 06:03:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:08,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:11,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:11,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999758315] [2023-11-29 06:03:11,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999758315] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:11,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:11,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:03:11,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650204210] [2023-11-29 06:03:11,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:11,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:03:11,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:11,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:03:11,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:03:11,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2023-11-29 06:03:11,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 128 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:03:11,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:11,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2023-11-29 06:03:11,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:15,451 INFO L124 PetriNetUnfolderBase]: 14661/21160 cut-off events. [2023-11-29 06:03:15,451 INFO L125 PetriNetUnfolderBase]: For 3611/3611 co-relation queries the response was YES. [2023-11-29 06:03:15,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45741 conditions, 21160 events. 14661/21160 cut-off events. For 3611/3611 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 120153 event pairs, 2573 based on Foata normal form. 1/21147 useless extension candidates. Maximal degree in co-relation 32220. Up to 4707 conditions per place. [2023-11-29 06:03:15,579 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 228 selfloop transitions, 13 changer transitions 19/269 dead transitions. [2023-11-29 06:03:15,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 269 transitions, 1167 flow [2023-11-29 06:03:15,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:03:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:03:15,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 443 transitions. [2023-11-29 06:03:15,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753246753246753 [2023-11-29 06:03:15,583 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 443 transitions. [2023-11-29 06:03:15,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 443 transitions. [2023-11-29 06:03:15,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:15,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 443 transitions. [2023-11-29 06:03:15,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 31.642857142857142) internal successors, (443), 14 states have internal predecessors, (443), 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) [2023-11-29 06:03:15,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:03:15,589 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:03:15,590 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 128 flow. Second operand 14 states and 443 transitions. [2023-11-29 06:03:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 269 transitions, 1167 flow [2023-11-29 06:03:15,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 269 transitions, 1163 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:15,598 INFO L231 Difference]: Finished difference. Result has 84 places, 62 transitions, 229 flow [2023-11-29 06:03:15,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=229, PETRI_PLACES=84, PETRI_TRANSITIONS=62} [2023-11-29 06:03:15,600 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-11-29 06:03:15,600 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 62 transitions, 229 flow [2023-11-29 06:03:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:03:15,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:15,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:15,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:03:15,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:15,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash 493308485, now seen corresponding path program 6 times [2023-11-29 06:03:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:15,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085770932] [2023-11-29 06:03:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:17,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:17,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:17,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085770932] [2023-11-29 06:03:17,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085770932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:17,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:17,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:03:17,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404376950] [2023-11-29 06:03:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:17,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:03:17,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:03:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:03:17,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2023-11-29 06:03:17,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 62 transitions, 229 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:03:17,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:17,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2023-11-29 06:03:17,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:24,775 INFO L124 PetriNetUnfolderBase]: 45385/65769 cut-off events. [2023-11-29 06:03:24,775 INFO L125 PetriNetUnfolderBase]: For 52563/52563 co-relation queries the response was YES. [2023-11-29 06:03:24,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179465 conditions, 65769 events. 45385/65769 cut-off events. For 52563/52563 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 452440 event pairs, 6609 based on Foata normal form. 1/65764 useless extension candidates. Maximal degree in co-relation 179298. Up to 15990 conditions per place. [2023-11-29 06:03:25,209 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 312 selfloop transitions, 25 changer transitions 13/359 dead transitions. [2023-11-29 06:03:25,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 359 transitions, 1996 flow [2023-11-29 06:03:25,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:03:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:03:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 473 transitions. [2023-11-29 06:03:25,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-29 06:03:25,213 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 473 transitions. [2023-11-29 06:03:25,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 473 transitions. [2023-11-29 06:03:25,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:25,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 473 transitions. [2023-11-29 06:03:25,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 33.785714285714285) internal successors, (473), 14 states have internal predecessors, (473), 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) [2023-11-29 06:03:25,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:03:25,219 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:03:25,220 INFO L175 Difference]: Start difference. First operand has 84 places, 62 transitions, 229 flow. Second operand 14 states and 473 transitions. [2023-11-29 06:03:25,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 359 transitions, 1996 flow [2023-11-29 06:03:26,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 359 transitions, 1956 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-29 06:03:26,626 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 480 flow [2023-11-29 06:03:26,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=480, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2023-11-29 06:03:26,627 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 41 predicate places. [2023-11-29 06:03:26,627 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 480 flow [2023-11-29 06:03:26,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:03:26,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:26,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:03:26,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:26,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2100548567, now seen corresponding path program 7 times [2023-11-29 06:03:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354968439] [2023-11-29 06:03:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:28,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:28,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354968439] [2023-11-29 06:03:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354968439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:28,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:28,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:03:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493205141] [2023-11-29 06:03:28,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:28,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:03:28,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:28,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:03:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:03:28,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2023-11-29 06:03:28,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 480 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:03:28,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:28,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2023-11-29 06:03:28,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:03:42,175 INFO L124 PetriNetUnfolderBase]: 81311/119621 cut-off events. [2023-11-29 06:03:42,176 INFO L125 PetriNetUnfolderBase]: For 208992/208992 co-relation queries the response was YES. [2023-11-29 06:03:42,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368420 conditions, 119621 events. 81311/119621 cut-off events. For 208992/208992 co-relation queries the response was YES. Maximal size of possible extension queue 3683. Compared 907157 event pairs, 17373 based on Foata normal form. 1/119615 useless extension candidates. Maximal degree in co-relation 367939. Up to 29152 conditions per place. [2023-11-29 06:03:43,097 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 336 selfloop transitions, 36 changer transitions 13/394 dead transitions. [2023-11-29 06:03:43,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 394 transitions, 2730 flow [2023-11-29 06:03:43,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:03:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:03:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 467 transitions. [2023-11-29 06:03:43,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064935064935065 [2023-11-29 06:03:43,100 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 467 transitions. [2023-11-29 06:03:43,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 467 transitions. [2023-11-29 06:03:43,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:03:43,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 467 transitions. [2023-11-29 06:03:43,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 33.357142857142854) internal successors, (467), 14 states have internal predecessors, (467), 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) [2023-11-29 06:03:43,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:03:43,106 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:03:43,106 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 480 flow. Second operand 14 states and 467 transitions. [2023-11-29 06:03:43,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 394 transitions, 2730 flow [2023-11-29 06:03:47,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 394 transitions, 2679 flow, removed 19 selfloop flow, removed 2 redundant places. [2023-11-29 06:03:47,091 INFO L231 Difference]: Finished difference. Result has 126 places, 110 transitions, 873 flow [2023-11-29 06:03:47,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=873, PETRI_PLACES=126, PETRI_TRANSITIONS=110} [2023-11-29 06:03:47,093 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 63 predicate places. [2023-11-29 06:03:47,093 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 110 transitions, 873 flow [2023-11-29 06:03:47,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:03:47,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:03:47,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:03:47,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 06:03:47,093 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:03:47,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:03:47,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1091701839, now seen corresponding path program 8 times [2023-11-29 06:03:47,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:03:47,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008493325] [2023-11-29 06:03:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:03:47,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:03:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:03:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:03:48,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:03:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008493325] [2023-11-29 06:03:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008493325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:03:48,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:03:48,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:03:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365679621] [2023-11-29 06:03:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:03:48,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:03:48,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:03:48,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:03:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:03:48,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2023-11-29 06:03:48,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 110 transitions, 873 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:03:48,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:03:48,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2023-11-29 06:03:48,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:04:12,360 INFO L124 PetriNetUnfolderBase]: 136199/201299 cut-off events. [2023-11-29 06:04:12,360 INFO L125 PetriNetUnfolderBase]: For 613551/613551 co-relation queries the response was YES. [2023-11-29 06:04:13,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684805 conditions, 201299 events. 136199/201299 cut-off events. For 613551/613551 co-relation queries the response was YES. Maximal size of possible extension queue 6485. Compared 1644456 event pairs, 32675 based on Foata normal form. 1/201286 useless extension candidates. Maximal degree in co-relation 683865. Up to 45749 conditions per place. [2023-11-29 06:04:14,065 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 365 selfloop transitions, 60 changer transitions 13/447 dead transitions. [2023-11-29 06:04:14,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 447 transitions, 3801 flow [2023-11-29 06:04:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:04:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:04:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 470 transitions. [2023-11-29 06:04:14,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6103896103896104 [2023-11-29 06:04:14,069 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 470 transitions. [2023-11-29 06:04:14,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 470 transitions. [2023-11-29 06:04:14,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:04:14,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 470 transitions. [2023-11-29 06:04:14,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 33.57142857142857) internal successors, (470), 14 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:04:14,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:04:14,074 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:04:14,074 INFO L175 Difference]: Start difference. First operand has 126 places, 110 transitions, 873 flow. Second operand 14 states and 470 transitions. [2023-11-29 06:04:14,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 447 transitions, 3801 flow [2023-11-29 06:04:42,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 447 transitions, 3702 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-11-29 06:04:42,911 INFO L231 Difference]: Finished difference. Result has 148 places, 157 transitions, 1685 flow [2023-11-29 06:04:42,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1685, PETRI_PLACES=148, PETRI_TRANSITIONS=157} [2023-11-29 06:04:42,912 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 85 predicate places. [2023-11-29 06:04:42,912 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 157 transitions, 1685 flow [2023-11-29 06:04:42,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:04:42,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:04:42,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:04:42,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:04:42,913 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:04:42,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:04:42,913 INFO L85 PathProgramCache]: Analyzing trace with hash -216513701, now seen corresponding path program 9 times [2023-11-29 06:04:42,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:04:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909637905] [2023-11-29 06:04:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:04:42,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:04:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:04:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:04:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:04:44,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909637905] [2023-11-29 06:04:44,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909637905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:04:44,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:04:44,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:04:44,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548038051] [2023-11-29 06:04:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:04:44,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:04:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:04:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:04:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:04:44,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2023-11-29 06:04:44,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 157 transitions, 1685 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:04:44,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:04:44,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2023-11-29 06:04:44,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:05:17,274 INFO L124 PetriNetUnfolderBase]: 165471/245184 cut-off events. [2023-11-29 06:05:17,274 INFO L125 PetriNetUnfolderBase]: For 1137458/1137458 co-relation queries the response was YES. [2023-11-29 06:05:18,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911288 conditions, 245184 events. 165471/245184 cut-off events. For 1137458/1137458 co-relation queries the response was YES. Maximal size of possible extension queue 8098. Compared 2063131 event pairs, 50735 based on Foata normal form. 1/245176 useless extension candidates. Maximal degree in co-relation 910085. Up to 74864 conditions per place. [2023-11-29 06:05:19,556 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 371 selfloop transitions, 79 changer transitions 14/473 dead transitions. [2023-11-29 06:05:19,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 473 transitions, 4732 flow [2023-11-29 06:05:19,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:05:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:05:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 464 transitions. [2023-11-29 06:05:19,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025974025974026 [2023-11-29 06:05:19,562 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 464 transitions. [2023-11-29 06:05:19,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 464 transitions. [2023-11-29 06:05:19,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:05:19,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 464 transitions. [2023-11-29 06:05:19,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 33.142857142857146) internal successors, (464), 14 states have internal predecessors, (464), 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) [2023-11-29 06:05:19,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:05:19,566 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:05:19,566 INFO L175 Difference]: Start difference. First operand has 148 places, 157 transitions, 1685 flow. Second operand 14 states and 464 transitions. [2023-11-29 06:05:19,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 473 transitions, 4732 flow [2023-11-29 06:06:19,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 473 transitions, 4640 flow, removed 46 selfloop flow, removed 1 redundant places. [2023-11-29 06:06:19,139 INFO L231 Difference]: Finished difference. Result has 171 places, 188 transitions, 2400 flow [2023-11-29 06:06:19,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2400, PETRI_PLACES=171, PETRI_TRANSITIONS=188} [2023-11-29 06:06:19,141 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 108 predicate places. [2023-11-29 06:06:19,141 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 188 transitions, 2400 flow [2023-11-29 06:06:19,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:06:19,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:06:19,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:06:19,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:06:19,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:06:19,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:06:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1095642311, now seen corresponding path program 10 times [2023-11-29 06:06:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:06:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773520655] [2023-11-29 06:06:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:06:19,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:06:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:06:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:06:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:06:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773520655] [2023-11-29 06:06:20,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773520655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:06:20,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:06:20,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:06:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060841567] [2023-11-29 06:06:20,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:06:20,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:06:20,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:06:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:06:20,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:06:20,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2023-11-29 06:06:20,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 188 transitions, 2400 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:06:20,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:06:20,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2023-11-29 06:06:20,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 06:07:30,576 INFO L124 PetriNetUnfolderBase]: 302242/453320 cut-off events. [2023-11-29 06:07:30,576 INFO L125 PetriNetUnfolderBase]: For 3059789/3059789 co-relation queries the response was YES. [2023-11-29 06:07:33,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804100 conditions, 453320 events. 302242/453320 cut-off events. For 3059789/3059789 co-relation queries the response was YES. Maximal size of possible extension queue 16501. Compared 4227950 event pairs, 64563 based on Foata normal form. 1/453306 useless extension candidates. Maximal degree in co-relation 1801329. Up to 139689 conditions per place. [2023-11-29 06:07:35,166 INFO L140 encePairwiseOnDemand]: 42/55 looper letters, 637 selfloop transitions, 93 changer transitions 25/764 dead transitions. [2023-11-29 06:07:35,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 764 transitions, 10799 flow [2023-11-29 06:07:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:07:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 06:07:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 457 transitions. [2023-11-29 06:07:35,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935064935064935 [2023-11-29 06:07:35,170 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 457 transitions. [2023-11-29 06:07:35,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 457 transitions. [2023-11-29 06:07:35,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:07:35,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 457 transitions. [2023-11-29 06:07:35,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 32.642857142857146) internal successors, (457), 14 states have internal predecessors, (457), 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) [2023-11-29 06:07:35,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:07:35,175 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 55.0) internal successors, (825), 15 states have internal predecessors, (825), 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) [2023-11-29 06:07:35,175 INFO L175 Difference]: Start difference. First operand has 171 places, 188 transitions, 2400 flow. Second operand 14 states and 457 transitions. [2023-11-29 06:07:35,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 764 transitions, 10799 flow [2023-11-29 06:12:47,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 764 transitions, 10481 flow, removed 148 selfloop flow, removed 3 redundant places. [2023-11-29 06:12:47,411 INFO L231 Difference]: Finished difference. Result has 192 places, 259 transitions, 3893 flow [2023-11-29 06:12:47,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=2307, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3893, PETRI_PLACES=192, PETRI_TRANSITIONS=259} [2023-11-29 06:12:47,412 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 129 predicate places. [2023-11-29 06:12:47,412 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 259 transitions, 3893 flow [2023-11-29 06:12:47,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:12:47,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 06:12:47,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:12:47,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:12:47,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-29 06:12:47,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:12:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1418788869, now seen corresponding path program 11 times [2023-11-29 06:12:47,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:12:47,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202126653] [2023-11-29 06:12:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:12:47,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:12:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:12:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:12:48,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:12:48,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202126653] [2023-11-29 06:12:48,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202126653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:12:48,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:12:48,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 06:12:48,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440896056] [2023-11-29 06:12:48,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:12:48,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:12:48,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:12:48,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:12:48,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:12:48,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 55 [2023-11-29 06:12:48,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 259 transitions, 3893 flow. Second operand has 14 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 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) [2023-11-29 06:12:48,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 06:12:48,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 55 [2023-11-29 06:12:48,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand