./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx --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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:58:46,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:58:46,317 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 20:58:46,324 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:58:46,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:58:46,358 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:58:46,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:58:46,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:58:46,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:58:46,362 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:58:46,363 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:58:46,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:58:46,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:58:46,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:58:46,366 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:58:46,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:58:46,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:58:46,369 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:58:46,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:58:46,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:58:46,370 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:58:46,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:58:46,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:58:46,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:58:46,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:58:46,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:58:46,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:58:46,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:58:46,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:58:46,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:58:46,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:58:46,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:46,380 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:58:46,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:58:46,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:58:46,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:58:46,383 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:58:46,383 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:58:46,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:58:46,384 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:58:46,384 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:58:46,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:58:46,385 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_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2023-11-21 20:58:46,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:58:46,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:58:46,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:58:46,830 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:58:46,831 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:58:46,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2023-11-21 20:58:50,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:58:50,637 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:58:50,637 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2023-11-21 20:58:50,685 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/data/65523bcfc/ae5803d57cc044b89b6be39e56d24120/FLAG7bc982cd8 [2023-11-21 20:58:50,788 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/data/65523bcfc/ae5803d57cc044b89b6be39e56d24120 [2023-11-21 20:58:50,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:58:50,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:58:50,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:50,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:58:50,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:58:50,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:50" (1/1) ... [2023-11-21 20:58:50,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbd3c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:50, skipping insertion in model container [2023-11-21 20:58:50,812 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:58:50" (1/1) ... [2023-11-21 20:58:50,898 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:58:51,103 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_9d927366-0142-4e25-9914-a567a2f4303b/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2023-11-21 20:58:51,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:51,454 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:58:51,474 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_9d927366-0142-4e25-9914-a567a2f4303b/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2023-11-21 20:58:51,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:58:51,650 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:58:51,650 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:58:51,660 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:58:51,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51 WrapperNode [2023-11-21 20:58:51,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:58:51,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:51,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:58:51,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:58:51,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,782 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 151 [2023-11-21 20:58:51,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:58:51,783 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:58:51,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:58:51,784 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:58:51,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,817 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,883 INFO L187 HeapSplitter]: Split 29 memory accesses to 6 slices as follows [23, 2, 1, 1, 1, 1] [2023-11-21 20:58:51,884 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,884 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:58:51,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:58:51,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:58:51,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:58:51,953 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (1/1) ... [2023-11-21 20:58:51,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:58:51,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:58:51,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:58:52,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d927366-0142-4e25-9914-a567a2f4303b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:58:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 20:58:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 20:58:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 20:58:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 20:58:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 20:58:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 20:58:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 20:58:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 20:58:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 20:58:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 20:58:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 20:58:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 20:58:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 20:58:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:58:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:58:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:58:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 20:58:52,054 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 20:58:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 20:58:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 20:58:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 20:58:52,055 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 20:58:52,055 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 20:58:52,056 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 20:58:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:58:52,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 20:58:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 20:58:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 20:58:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 20:58:52,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 20:58:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 20:58:52,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:58:52,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:58:52,060 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 20:58:52,264 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:58:52,267 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:58:52,920 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:58:53,545 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:58:53,545 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 20:58:53,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:53 BoogieIcfgContainer [2023-11-21 20:58:53,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:58:53,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:58:53,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:58:53,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:58:53,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:58:50" (1/3) ... [2023-11-21 20:58:53,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec2635e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:53, skipping insertion in model container [2023-11-21 20:58:53,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:58:51" (2/3) ... [2023-11-21 20:58:53,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ec2635e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:58:53, skipping insertion in model container [2023-11-21 20:58:53,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:58:53" (3/3) ... [2023-11-21 20:58:53,565 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2023-11-21 20:58:53,583 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 20:58:53,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:58:53,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 20:58:53,599 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 20:58:53,689 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 20:58:53,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2023-11-21 20:58:53,804 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2023-11-21 20:58:53,805 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 20:58:53,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-21 20:58:53,813 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2023-11-21 20:58:53,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2023-11-21 20:58:53,841 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:58:53,849 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;@1a9b0457, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:58:53,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 20:58:53,869 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:58:53,870 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-21 20:58:53,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 20:58:53,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:58:53,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:53,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-21 20:58:53,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash 862996183, now seen corresponding path program 1 times [2023-11-21 20:58:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:53,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584131475] [2023-11-21 20:58:53,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:55,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:55,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584131475] [2023-11-21 20:58:55,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584131475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:55,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:58:55,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113144491] [2023-11-21 20:58:55,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:58:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:58:55,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:58:55,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2023-11-21 20:58:55,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:55,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:58:55,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2023-11-21 20:58:55,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:58:57,445 INFO L124 PetriNetUnfolderBase]: 3334/5214 cut-off events. [2023-11-21 20:58:57,445 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-21 20:58:57,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9997 conditions, 5214 events. 3334/5214 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 33817 event pairs, 961 based on Foata normal form. 144/5318 useless extension candidates. Maximal degree in co-relation 9985. Up to 3118 conditions per place. [2023-11-21 20:58:57,507 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 34 selfloop transitions, 2 changer transitions 37/87 dead transitions. [2023-11-21 20:58:57,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 335 flow [2023-11-21 20:58:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:58:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 20:58:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2023-11-21 20:58:57,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2023-11-21 20:58:57,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 201 transitions. [2023-11-21 20:58:57,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 201 transitions. [2023-11-21 20:58:57,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:58:57,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 201 transitions. [2023-11-21 20:58:57,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.714285714285715) internal successors, (201), 7 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:57,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:58:57,540 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:58:57,542 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 201 transitions. [2023-11-21 20:58:57,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 335 flow [2023-11-21 20:58:57,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 330 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 20:58:57,552 INFO L231 Difference]: Finished difference. Result has 58 places, 38 transitions, 100 flow [2023-11-21 20:58:57,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=100, PETRI_PLACES=58, PETRI_TRANSITIONS=38} [2023-11-21 20:58:57,558 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-11-21 20:58:57,558 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 38 transitions, 100 flow [2023-11-21 20:58:57,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:58:57,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:58:57,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:58:57,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:58:57,560 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)] === [2023-11-21 20:58:57,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:58:57,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1628376632, now seen corresponding path program 1 times [2023-11-21 20:58:57,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:58:57,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266074097] [2023-11-21 20:58:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:58:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:58:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:58:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:58:57,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:58:57,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266074097] [2023-11-21 20:58:57,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266074097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:58:57,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:58:57,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:58:57,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19556649] [2023-11-21 20:58:57,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:58:57,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:58:57,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:58:57,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:58:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:58:57,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-21 20:58:57,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 38 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2023-11-21 20:58:57,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:58:57,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-21 20:58:57,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:00,224 INFO L124 PetriNetUnfolderBase]: 5410/8136 cut-off events. [2023-11-21 20:59:00,225 INFO L125 PetriNetUnfolderBase]: For 1860/1860 co-relation queries the response was YES. [2023-11-21 20:59:00,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17470 conditions, 8136 events. 5410/8136 cut-off events. For 1860/1860 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 53516 event pairs, 1407 based on Foata normal form. 192/8285 useless extension candidates. Maximal degree in co-relation 17455. Up to 5656 conditions per place. [2023-11-21 20:59:00,320 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 36 selfloop transitions, 3 changer transitions 39/90 dead transitions. [2023-11-21 20:59:00,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 375 flow [2023-11-21 20:59:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:00,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 20:59:00,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2023-11-21 20:59:00,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2023-11-21 20:59:00,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 192 transitions. [2023-11-21 20:59:00,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 192 transitions. [2023-11-21 20:59:00,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:00,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 192 transitions. [2023-11-21 20:59:00,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 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) [2023-11-21 20:59:00,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:00,329 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:00,329 INFO L175 Difference]: Start difference. First operand has 58 places, 38 transitions, 100 flow. Second operand 7 states and 192 transitions. [2023-11-21 20:59:00,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 375 flow [2023-11-21 20:59:00,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 90 transitions, 353 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-21 20:59:00,430 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 123 flow [2023-11-21 20:59:00,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2023-11-21 20:59:00,431 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-11-21 20:59:00,431 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 123 flow [2023-11-21 20:59:00,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2023-11-21 20:59:00,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:00,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:59:00,433 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)] === [2023-11-21 20:59:00,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 311217815, now seen corresponding path program 1 times [2023-11-21 20:59:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:00,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540375549] [2023-11-21 20:59:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:00,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:00,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:00,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540375549] [2023-11-21 20:59:00,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540375549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:00,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:00,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:00,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251835626] [2023-11-21 20:59:00,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:00,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:00,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:00,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2023-11-21 20:59:00,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:00,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:00,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2023-11-21 20:59:00,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:03,835 INFO L124 PetriNetUnfolderBase]: 7302/10928 cut-off events. [2023-11-21 20:59:03,836 INFO L125 PetriNetUnfolderBase]: For 4314/4314 co-relation queries the response was YES. [2023-11-21 20:59:03,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25239 conditions, 10928 events. 7302/10928 cut-off events. For 4314/4314 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 76288 event pairs, 2895 based on Foata normal form. 252/11077 useless extension candidates. Maximal degree in co-relation 25223. Up to 4727 conditions per place. [2023-11-21 20:59:03,944 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 41 selfloop transitions, 3 changer transitions 41/97 dead transitions. [2023-11-21 20:59:03,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 441 flow [2023-11-21 20:59:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 20:59:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2023-11-21 20:59:03,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-21 20:59:03,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 198 transitions. [2023-11-21 20:59:03,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 198 transitions. [2023-11-21 20:59:03,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:03,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 198 transitions. [2023-11-21 20:59:03,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.285714285714285) internal successors, (198), 7 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:03,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:03,952 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:03,952 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 123 flow. Second operand 7 states and 198 transitions. [2023-11-21 20:59:03,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 441 flow [2023-11-21 20:59:04,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 420 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-21 20:59:04,029 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 133 flow [2023-11-21 20:59:04,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2023-11-21 20:59:04,031 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-11-21 20:59:04,031 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 133 flow [2023-11-21 20:59:04,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:04,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:04,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:04,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 20:59:04,033 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)] === [2023-11-21 20:59:04,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:04,034 INFO L85 PathProgramCache]: Analyzing trace with hash 458729241, now seen corresponding path program 1 times [2023-11-21 20:59:04,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:04,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987957791] [2023-11-21 20:59:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:04,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:04,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987957791] [2023-11-21 20:59:04,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987957791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:04,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:04,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:04,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731637803] [2023-11-21 20:59:04,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:04,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:04,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2023-11-21 20:59:04,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2023-11-21 20:59:04,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:04,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2023-11-21 20:59:04,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:07,739 INFO L124 PetriNetUnfolderBase]: 7239/11586 cut-off events. [2023-11-21 20:59:07,740 INFO L125 PetriNetUnfolderBase]: For 7582/7742 co-relation queries the response was YES. [2023-11-21 20:59:07,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25641 conditions, 11586 events. 7239/11586 cut-off events. For 7582/7742 co-relation queries the response was YES. Maximal size of possible extension queue 605. Compared 83799 event pairs, 1387 based on Foata normal form. 336/11656 useless extension candidates. Maximal degree in co-relation 25622. Up to 6787 conditions per place. [2023-11-21 20:59:07,845 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 40 selfloop transitions, 2 changer transitions 37/94 dead transitions. [2023-11-21 20:59:07,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 94 transitions, 424 flow [2023-11-21 20:59:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:07,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 20:59:07,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2023-11-21 20:59:07,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2023-11-21 20:59:07,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 200 transitions. [2023-11-21 20:59:07,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 200 transitions. [2023-11-21 20:59:07,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:07,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 200 transitions. [2023-11-21 20:59:07,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2023-11-21 20:59:07,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:07,853 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:07,853 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 133 flow. Second operand 7 states and 200 transitions. [2023-11-21 20:59:07,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 94 transitions, 424 flow [2023-11-21 20:59:07,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 401 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-21 20:59:07,919 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 134 flow [2023-11-21 20:59:07,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=134, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2023-11-21 20:59:07,921 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2023-11-21 20:59:07,922 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 134 flow [2023-11-21 20:59:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 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) [2023-11-21 20:59:07,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:07,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:07,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 20:59:07,926 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)] === [2023-11-21 20:59:07,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:07,926 INFO L85 PathProgramCache]: Analyzing trace with hash 766351642, now seen corresponding path program 1 times [2023-11-21 20:59:07,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629605246] [2023-11-21 20:59:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:07,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:08,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:08,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:08,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629605246] [2023-11-21 20:59:08,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629605246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:08,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:08,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:08,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978385722] [2023-11-21 20:59:08,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:08,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:08,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:08,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:08,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:08,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2023-11-21 20:59:08,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2023-11-21 20:59:08,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:08,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2023-11-21 20:59:08,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:12,244 INFO L124 PetriNetUnfolderBase]: 12338/18978 cut-off events. [2023-11-21 20:59:12,244 INFO L125 PetriNetUnfolderBase]: For 11106/11106 co-relation queries the response was YES. [2023-11-21 20:59:12,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43890 conditions, 18978 events. 12338/18978 cut-off events. For 11106/11106 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 138611 event pairs, 1895 based on Foata normal form. 252/19124 useless extension candidates. Maximal degree in co-relation 43869. Up to 8122 conditions per place. [2023-11-21 20:59:12,583 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 48 selfloop transitions, 4 changer transitions 28/91 dead transitions. [2023-11-21 20:59:12,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 445 flow [2023-11-21 20:59:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:12,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 20:59:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2023-11-21 20:59:12,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2023-11-21 20:59:12,586 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 171 transitions. [2023-11-21 20:59:12,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 171 transitions. [2023-11-21 20:59:12,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:12,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 171 transitions. [2023-11-21 20:59:12,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:12,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-21 20:59:12,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-21 20:59:12,589 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 134 flow. Second operand 6 states and 171 transitions. [2023-11-21 20:59:12,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 445 flow [2023-11-21 20:59:12,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 427 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-21 20:59:12,715 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 139 flow [2023-11-21 20:59:12,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2023-11-21 20:59:12,719 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-11-21 20:59:12,719 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 139 flow [2023-11-21 20:59:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 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) [2023-11-21 20:59:12,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:12,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:12,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 20:59:12,720 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)] === [2023-11-21 20:59:12,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:12,721 INFO L85 PathProgramCache]: Analyzing trace with hash 2029621530, now seen corresponding path program 2 times [2023-11-21 20:59:12,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:12,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682558759] [2023-11-21 20:59:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:12,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:14,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:14,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682558759] [2023-11-21 20:59:14,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682558759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:14,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:14,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:14,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090213559] [2023-11-21 20:59:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:14,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:59:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:59:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:14,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2023-11-21 20:59:14,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:14,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:14,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2023-11-21 20:59:14,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:16,223 INFO L124 PetriNetUnfolderBase]: 5546/8936 cut-off events. [2023-11-21 20:59:16,223 INFO L125 PetriNetUnfolderBase]: For 5018/5064 co-relation queries the response was YES. [2023-11-21 20:59:16,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19892 conditions, 8936 events. 5546/8936 cut-off events. For 5018/5064 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 64279 event pairs, 3169 based on Foata normal form. 252/8969 useless extension candidates. Maximal degree in co-relation 19872. Up to 6140 conditions per place. [2023-11-21 20:59:16,309 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 39 selfloop transitions, 7 changer transitions 31/93 dead transitions. [2023-11-21 20:59:16,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 424 flow [2023-11-21 20:59:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 20:59:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2023-11-21 20:59:16,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6194444444444445 [2023-11-21 20:59:16,313 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 223 transitions. [2023-11-21 20:59:16,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 223 transitions. [2023-11-21 20:59:16,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:16,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 223 transitions. [2023-11-21 20:59:16,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.875) internal successors, (223), 8 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) [2023-11-21 20:59:16,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 45.0) internal successors, (405), 9 states have internal predecessors, (405), 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) [2023-11-21 20:59:16,317 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 45.0) internal successors, (405), 9 states have internal predecessors, (405), 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) [2023-11-21 20:59:16,317 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 139 flow. Second operand 8 states and 223 transitions. [2023-11-21 20:59:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 424 flow [2023-11-21 20:59:16,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 93 transitions, 404 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-21 20:59:16,367 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 182 flow [2023-11-21 20:59:16,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-11-21 20:59:16,371 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2023-11-21 20:59:16,372 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 182 flow [2023-11-21 20:59:16,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:16,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:16,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:16,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 20:59:16,373 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)] === [2023-11-21 20:59:16,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:16,374 INFO L85 PathProgramCache]: Analyzing trace with hash -42795491, now seen corresponding path program 1 times [2023-11-21 20:59:16,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:16,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127329297] [2023-11-21 20:59:16,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:18,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:18,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127329297] [2023-11-21 20:59:18,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127329297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:18,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:18,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 20:59:18,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149666940] [2023-11-21 20:59:18,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:18,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:59:18,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:18,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:59:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:59:18,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2023-11-21 20:59:18,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 182 flow. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 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) [2023-11-21 20:59:18,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:18,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2023-11-21 20:59:18,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:20,705 INFO L124 PetriNetUnfolderBase]: 4918/8008 cut-off events. [2023-11-21 20:59:20,706 INFO L125 PetriNetUnfolderBase]: For 9478/9531 co-relation queries the response was YES. [2023-11-21 20:59:20,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21035 conditions, 8008 events. 4918/8008 cut-off events. For 9478/9531 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 57027 event pairs, 3016 based on Foata normal form. 198/8031 useless extension candidates. Maximal degree in co-relation 21012. Up to 4951 conditions per place. [2023-11-21 20:59:20,801 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 46 selfloop transitions, 7 changer transitions 33/102 dead transitions. [2023-11-21 20:59:20,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 543 flow [2023-11-21 20:59:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 20:59:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2023-11-21 20:59:20,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6305555555555555 [2023-11-21 20:59:20,808 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 227 transitions. [2023-11-21 20:59:20,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 227 transitions. [2023-11-21 20:59:20,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:20,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 227 transitions. [2023-11-21 20:59:20,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.375) internal successors, (227), 8 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:20,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 45.0) internal successors, (405), 9 states have internal predecessors, (405), 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) [2023-11-21 20:59:20,814 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 45.0) internal successors, (405), 9 states have internal predecessors, (405), 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) [2023-11-21 20:59:20,814 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 182 flow. Second operand 8 states and 227 transitions. [2023-11-21 20:59:20,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 543 flow [2023-11-21 20:59:20,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 535 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:20,872 INFO L231 Difference]: Finished difference. Result has 76 places, 48 transitions, 222 flow [2023-11-21 20:59:20,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=222, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2023-11-21 20:59:20,873 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2023-11-21 20:59:20,874 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 222 flow [2023-11-21 20:59:20,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 8 states have internal predecessors, (160), 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) [2023-11-21 20:59:20,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:20,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:20,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 20:59:20,875 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)] === [2023-11-21 20:59:20,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash -685418823, now seen corresponding path program 1 times [2023-11-21 20:59:20,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:20,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537174337] [2023-11-21 20:59:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:20,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537174337] [2023-11-21 20:59:21,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537174337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:21,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042257272] [2023-11-21 20:59:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:21,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:21,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2023-11-21 20:59:21,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 48 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:21,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:21,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2023-11-21 20:59:21,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:25,445 INFO L124 PetriNetUnfolderBase]: 14463/20900 cut-off events. [2023-11-21 20:59:25,445 INFO L125 PetriNetUnfolderBase]: For 24526/24602 co-relation queries the response was YES. [2023-11-21 20:59:25,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56453 conditions, 20900 events. 14463/20900 cut-off events. For 24526/24602 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 135790 event pairs, 2037 based on Foata normal form. 715/21478 useless extension candidates. Maximal degree in co-relation 56424. Up to 11652 conditions per place. [2023-11-21 20:59:25,677 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 75 selfloop transitions, 6 changer transitions 1/94 dead transitions. [2023-11-21 20:59:25,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 602 flow [2023-11-21 20:59:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 20:59:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2023-11-21 20:59:25,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-21 20:59:25,679 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 120 transitions. [2023-11-21 20:59:25,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 120 transitions. [2023-11-21 20:59:25,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:25,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 120 transitions. [2023-11-21 20:59:25,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:25,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2023-11-21 20:59:25,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2023-11-21 20:59:25,683 INFO L175 Difference]: Start difference. First operand has 76 places, 48 transitions, 222 flow. Second operand 4 states and 120 transitions. [2023-11-21 20:59:25,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 602 flow [2023-11-21 20:59:25,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 94 transitions, 575 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-21 20:59:25,791 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 249 flow [2023-11-21 20:59:25,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-11-21 20:59:25,795 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 21 predicate places. [2023-11-21 20:59:25,795 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 249 flow [2023-11-21 20:59:25,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:25,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:25,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:25,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 20:59:25,797 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)] === [2023-11-21 20:59:25,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1920580268, now seen corresponding path program 1 times [2023-11-21 20:59:25,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:25,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056376841] [2023-11-21 20:59:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:25,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:26,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:26,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056376841] [2023-11-21 20:59:26,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056376841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:26,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:26,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:26,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495927326] [2023-11-21 20:59:26,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:26,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:26,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:26,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:26,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:26,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2023-11-21 20:59:26,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:26,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:26,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2023-11-21 20:59:26,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:28,564 INFO L124 PetriNetUnfolderBase]: 11095/16120 cut-off events. [2023-11-21 20:59:28,564 INFO L125 PetriNetUnfolderBase]: For 17055/17105 co-relation queries the response was YES. [2023-11-21 20:59:28,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46127 conditions, 16120 events. 11095/16120 cut-off events. For 17055/17105 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 100462 event pairs, 887 based on Foata normal form. 666/16691 useless extension candidates. Maximal degree in co-relation 46099. Up to 7401 conditions per place. [2023-11-21 20:59:28,679 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 84 selfloop transitions, 10 changer transitions 1/107 dead transitions. [2023-11-21 20:59:28,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 680 flow [2023-11-21 20:59:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:59:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 20:59:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2023-11-21 20:59:28,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755555555555556 [2023-11-21 20:59:28,682 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 152 transitions. [2023-11-21 20:59:28,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 152 transitions. [2023-11-21 20:59:28,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:28,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 152 transitions. [2023-11-21 20:59:28,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:28,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-21 20:59:28,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 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) [2023-11-21 20:59:28,685 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 249 flow. Second operand 5 states and 152 transitions. [2023-11-21 20:59:28,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 680 flow [2023-11-21 20:59:28,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 669 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:28,707 INFO L231 Difference]: Finished difference. Result has 76 places, 56 transitions, 301 flow [2023-11-21 20:59:28,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=76, PETRI_TRANSITIONS=56} [2023-11-21 20:59:28,710 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2023-11-21 20:59:28,710 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 56 transitions, 301 flow [2023-11-21 20:59:28,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:28,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:28,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 20:59:28,711 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)] === [2023-11-21 20:59:28,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:28,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1838498521, now seen corresponding path program 1 times [2023-11-21 20:59:28,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:28,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744993259] [2023-11-21 20:59:28,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:28,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:28,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:29,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:29,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744993259] [2023-11-21 20:59:29,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744993259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:29,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:29,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:29,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422716225] [2023-11-21 20:59:29,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:29,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2023-11-21 20:59:29,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 56 transitions, 301 flow. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:29,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:29,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2023-11-21 20:59:29,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:30,579 INFO L124 PetriNetUnfolderBase]: 7048/10199 cut-off events. [2023-11-21 20:59:30,579 INFO L125 PetriNetUnfolderBase]: For 14748/14784 co-relation queries the response was YES. [2023-11-21 20:59:30,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31281 conditions, 10199 events. 7048/10199 cut-off events. For 14748/14784 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 57946 event pairs, 442 based on Foata normal form. 468/10579 useless extension candidates. Maximal degree in co-relation 31251. Up to 3000 conditions per place. [2023-11-21 20:59:30,659 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 95 selfloop transitions, 14 changer transitions 1/122 dead transitions. [2023-11-21 20:59:30,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 807 flow [2023-11-21 20:59:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 20:59:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2023-11-21 20:59:30,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2023-11-21 20:59:30,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 184 transitions. [2023-11-21 20:59:30,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 184 transitions. [2023-11-21 20:59:30,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:30,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 184 transitions. [2023-11-21 20:59:30,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:30,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-21 20:59:30,665 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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) [2023-11-21 20:59:30,665 INFO L175 Difference]: Start difference. First operand has 76 places, 56 transitions, 301 flow. Second operand 6 states and 184 transitions. [2023-11-21 20:59:30,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 807 flow [2023-11-21 20:59:30,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 777 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-21 20:59:30,736 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 351 flow [2023-11-21 20:59:30,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=351, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2023-11-21 20:59:30,737 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2023-11-21 20:59:30,737 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 351 flow [2023-11-21 20:59:30,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:30,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:30,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:30,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 20:59:30,738 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)] === [2023-11-21 20:59:30,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:30,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1930199247, now seen corresponding path program 1 times [2023-11-21 20:59:30,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:30,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167580624] [2023-11-21 20:59:30,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:31,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:31,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167580624] [2023-11-21 20:59:31,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167580624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:31,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:31,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:31,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520620400] [2023-11-21 20:59:31,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:31,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:31,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:31,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:31,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2023-11-21 20:59:31,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2023-11-21 20:59:31,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:31,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2023-11-21 20:59:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:33,003 INFO L124 PetriNetUnfolderBase]: 7747/12388 cut-off events. [2023-11-21 20:59:33,004 INFO L125 PetriNetUnfolderBase]: For 17737/18563 co-relation queries the response was YES. [2023-11-21 20:59:33,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36733 conditions, 12388 events. 7747/12388 cut-off events. For 17737/18563 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 85826 event pairs, 2223 based on Foata normal form. 248/12099 useless extension candidates. Maximal degree in co-relation 36702. Up to 3645 conditions per place. [2023-11-21 20:59:33,109 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 79 selfloop transitions, 5 changer transitions 24/131 dead transitions. [2023-11-21 20:59:33,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 131 transitions, 850 flow [2023-11-21 20:59:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 20:59:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2023-11-21 20:59:33,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2023-11-21 20:59:33,111 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 196 transitions. [2023-11-21 20:59:33,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 196 transitions. [2023-11-21 20:59:33,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:33,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 196 transitions. [2023-11-21 20:59:33,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 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) [2023-11-21 20:59:33,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:33,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:33,114 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 351 flow. Second operand 7 states and 196 transitions. [2023-11-21 20:59:33,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 131 transitions, 850 flow [2023-11-21 20:59:33,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 131 transitions, 801 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-21 20:59:33,264 INFO L231 Difference]: Finished difference. Result has 84 places, 62 transitions, 339 flow [2023-11-21 20:59:33,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=84, PETRI_TRANSITIONS=62} [2023-11-21 20:59:33,265 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 33 predicate places. [2023-11-21 20:59:33,265 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 62 transitions, 339 flow [2023-11-21 20:59:33,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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) [2023-11-21 20:59:33,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:33,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:33,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 20:59:33,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-21 20:59:33,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:33,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1565342579, now seen corresponding path program 2 times [2023-11-21 20:59:33,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:33,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374579264] [2023-11-21 20:59:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:33,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:33,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:33,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374579264] [2023-11-21 20:59:33,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374579264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:33,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:33,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:33,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727935125] [2023-11-21 20:59:33,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:33,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:59:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:59:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:33,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2023-11-21 20:59:33,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 62 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:33,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:33,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2023-11-21 20:59:33,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:35,658 INFO L124 PetriNetUnfolderBase]: 8536/12050 cut-off events. [2023-11-21 20:59:35,658 INFO L125 PetriNetUnfolderBase]: For 14412/14520 co-relation queries the response was YES. [2023-11-21 20:59:35,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35079 conditions, 12050 events. 8536/12050 cut-off events. For 14412/14520 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 68005 event pairs, 472 based on Foata normal form. 413/12223 useless extension candidates. Maximal degree in co-relation 35046. Up to 3844 conditions per place. [2023-11-21 20:59:35,732 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 72 selfloop transitions, 18 changer transitions 15/119 dead transitions. [2023-11-21 20:59:35,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 767 flow [2023-11-21 20:59:35,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:35,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 20:59:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2023-11-21 20:59:35,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158730158730159 [2023-11-21 20:59:35,736 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 194 transitions. [2023-11-21 20:59:35,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 194 transitions. [2023-11-21 20:59:35,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:35,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 194 transitions. [2023-11-21 20:59:35,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.714285714285715) internal successors, (194), 7 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:35,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:35,739 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 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) [2023-11-21 20:59:35,739 INFO L175 Difference]: Start difference. First operand has 84 places, 62 transitions, 339 flow. Second operand 7 states and 194 transitions. [2023-11-21 20:59:35,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 767 flow