./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b11be791089901ed5596869d293da40c27b85c1e89c21a55cf2181db7595687 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:46:39,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:46:40,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:46:40,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:46:40,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:46:40,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:46:40,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:46:40,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:46:40,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:46:40,045 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:46:40,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:46:40,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:46:40,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:46:40,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:46:40,048 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:46:40,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:46:40,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:46:40,050 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:46:40,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:46:40,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:46:40,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:46:40,053 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:46:40,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:46:40,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:46:40,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:46:40,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:46:40,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:46:40,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:46:40,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:46:40,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:46:40,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:46:40,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:40,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:46:40,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:46:40,059 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:46:40,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:46:40,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:46:40,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:46:40,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:46:40,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:46:40,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:46:40,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:46:40,062 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_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b11be791089901ed5596869d293da40c27b85c1e89c21a55cf2181db7595687 [2023-11-24 21:46:40,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:46:40,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:46:40,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:46:40,440 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:46:40,440 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:46:40,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:46:43,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:46:43,831 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:46:43,831 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:46:43,854 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/data/eddb578d4/1d975811f0984a23a28ce2f42b48dd1c/FLAG7e7a223ab [2023-11-24 21:46:43,877 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/data/eddb578d4/1d975811f0984a23a28ce2f42b48dd1c [2023-11-24 21:46:43,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:46:43,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:46:43,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:43,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:46:43,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:46:43,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:43" (1/1) ... [2023-11-24 21:46:43,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed4f5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:43, skipping insertion in model container [2023-11-24 21:46:43,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:43" (1/1) ... [2023-11-24 21:46:43,947 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:46:44,169 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_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-24 21:46:44,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:44,513 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:46:44,527 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_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/sv-benchmarks/c/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-24 21:46:44,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:44,618 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:46:44,619 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:46:44,627 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:46:44,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44 WrapperNode [2023-11-24 21:46:44,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:44,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:44,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:46:44,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:46:44,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,660 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,727 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-11-24 21:46:44,744 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:44,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:46:44,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:46:44,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:46:44,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,804 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:46:44,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,809 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,819 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,824 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:46:44,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:46:44,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:46:44,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:46:44,834 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (1/1) ... [2023-11-24 21:46:44,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:44,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:46:44,873 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:46:44,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fc7b9be-ebc9-4cb8-99b8-27e0e20e5259/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:46:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:46:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:46:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:46:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:46:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:46:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:46:44,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:46:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:46:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:46:44,928 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:46:44,928 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:46:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:46:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:46:44,929 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:46:44,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:46:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:46:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:46:44,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:46:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:46:44,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:46:44,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:46:44,934 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:46:45,119 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:46:45,122 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:46:45,517 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:46:45,861 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:46:45,861 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:46:45,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:45 BoogieIcfgContainer [2023-11-24 21:46:45,862 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:46:45,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:46:45,866 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:46:45,869 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:46:45,870 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:46:43" (1/3) ... [2023-11-24 21:46:45,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212358dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:45, skipping insertion in model container [2023-11-24 21:46:45,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:44" (2/3) ... [2023-11-24 21:46:45,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212358dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:45, skipping insertion in model container [2023-11-24 21:46:45,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:45" (3/3) ... [2023-11-24 21:46:45,875 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:46:45,886 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:46:45,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:46:45,898 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:46:45,898 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:46:45,980 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:46:46,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2023-11-24 21:46:46,057 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2023-11-24 21:46:46,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:46:46,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-11-24 21:46:46,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2023-11-24 21:46:46,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 37 transitions, 83 flow [2023-11-24 21:46:46,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:46:46,083 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;@6faaeaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:46:46,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 21:46:46,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:46:46,090 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-24 21:46:46,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:46:46,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:46,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:46:46,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:46,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash 70596679, now seen corresponding path program 1 times [2023-11-24 21:46:46,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279520984] [2023-11-24 21:46:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:46,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:46,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279520984] [2023-11-24 21:46:46,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279520984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:46,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:46,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:46:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172730332] [2023-11-24 21:46:46,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:46,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:46,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:46,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2023-11-24 21:46:46,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:46,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:46,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2023-11-24 21:46:46,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:47,675 INFO L124 PetriNetUnfolderBase]: 1279/2291 cut-off events. [2023-11-24 21:46:47,675 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-24 21:46:47,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4238 conditions, 2291 events. 1279/2291 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14748 event pairs, 214 based on Foata normal form. 80/2338 useless extension candidates. Maximal degree in co-relation 4227. Up to 1516 conditions per place. [2023-11-24 21:46:47,706 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 33 selfloop transitions, 2 changer transitions 2/50 dead transitions. [2023-11-24 21:46:47,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 186 flow [2023-11-24 21:46:47,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2023-11-24 21:46:47,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-24 21:46:47,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 88 transitions. [2023-11-24 21:46:47,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 88 transitions. [2023-11-24 21:46:47,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:47,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 88 transitions. [2023-11-24 21:46:47,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:47,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 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) [2023-11-24 21:46:47,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 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) [2023-11-24 21:46:47,741 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 83 flow. Second operand 3 states and 88 transitions. [2023-11-24 21:46:47,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 186 flow [2023-11-24 21:46:47,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 182 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:46:47,755 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 78 flow [2023-11-24 21:46:47,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-24 21:46:47,763 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2023-11-24 21:46:47,764 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 78 flow [2023-11-24 21:46:47,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:47,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:47,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:47,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:46:47,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:47,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:47,767 INFO L85 PathProgramCache]: Analyzing trace with hash 23605203, now seen corresponding path program 1 times [2023-11-24 21:46:47,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:47,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017621356] [2023-11-24 21:46:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:48,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:48,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017621356] [2023-11-24 21:46:48,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017621356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:48,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:48,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:48,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900026673] [2023-11-24 21:46:48,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:48,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:46:48,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:48,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:46:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:46:48,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2023-11-24 21:46:48,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:48,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:48,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2023-11-24 21:46:48,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:49,146 INFO L124 PetriNetUnfolderBase]: 2225/3684 cut-off events. [2023-11-24 21:46:49,147 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-24 21:46:49,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 3684 events. 2225/3684 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22652 event pairs, 330 based on Foata normal form. 150/3699 useless extension candidates. Maximal degree in co-relation 7262. Up to 1856 conditions per place. [2023-11-24 21:46:49,178 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 48 selfloop transitions, 5 changer transitions 1/63 dead transitions. [2023-11-24 21:46:49,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 252 flow [2023-11-24 21:46:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:46:49,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:46:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2023-11-24 21:46:49,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-24 21:46:49,184 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 104 transitions. [2023-11-24 21:46:49,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 104 transitions. [2023-11-24 21:46:49,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:49,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 104 transitions. [2023-11-24 21:46:49,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:49,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 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) [2023-11-24 21:46:49,194 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 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) [2023-11-24 21:46:49,194 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 78 flow. Second operand 4 states and 104 transitions. [2023-11-24 21:46:49,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 252 flow [2023-11-24 21:46:49,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:49,202 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 108 flow [2023-11-24 21:46:49,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-11-24 21:46:49,212 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-11-24 21:46:49,212 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 108 flow [2023-11-24 21:46:49,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:49,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:49,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:49,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:46:49,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:49,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -555717826, now seen corresponding path program 1 times [2023-11-24 21:46:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:49,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035123144] [2023-11-24 21:46:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:49,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:49,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035123144] [2023-11-24 21:46:49,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035123144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:49,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:49,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:49,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140404327] [2023-11-24 21:46:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:49,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:46:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:49,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:46:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:46:49,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2023-11-24 21:46:49,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:49,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:49,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2023-11-24 21:46:49,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:50,031 INFO L124 PetriNetUnfolderBase]: 1358/2253 cut-off events. [2023-11-24 21:46:50,031 INFO L125 PetriNetUnfolderBase]: For 493/493 co-relation queries the response was YES. [2023-11-24 21:46:50,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 2253 events. 1358/2253 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 12068 event pairs, 200 based on Foata normal form. 114/2298 useless extension candidates. Maximal degree in co-relation 5118. Up to 701 conditions per place. [2023-11-24 21:46:50,050 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 61 selfloop transitions, 8 changer transitions 1/79 dead transitions. [2023-11-24 21:46:50,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 79 transitions, 353 flow [2023-11-24 21:46:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:46:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:46:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2023-11-24 21:46:50,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.66 [2023-11-24 21:46:50,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 132 transitions. [2023-11-24 21:46:50,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 132 transitions. [2023-11-24 21:46:50,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:50,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 132 transitions. [2023-11-24 21:46:50,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,056 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,056 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 108 flow. Second operand 5 states and 132 transitions. [2023-11-24 21:46:50,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 79 transitions, 353 flow [2023-11-24 21:46:50,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 79 transitions, 343 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:50,061 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 148 flow [2023-11-24 21:46:50,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-24 21:46:50,062 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-24 21:46:50,062 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 148 flow [2023-11-24 21:46:50,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:50,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:50,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:46:50,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:50,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1364701910, now seen corresponding path program 1 times [2023-11-24 21:46:50,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529379014] [2023-11-24 21:46:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:50,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:50,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:50,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529379014] [2023-11-24 21:46:50,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529379014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:50,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:50,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:46:50,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712043166] [2023-11-24 21:46:50,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:46:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:50,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:46:50,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:46:50,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2023-11-24 21:46:50,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:50,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2023-11-24 21:46:50,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:50,935 INFO L124 PetriNetUnfolderBase]: 833/1342 cut-off events. [2023-11-24 21:46:50,935 INFO L125 PetriNetUnfolderBase]: For 932/932 co-relation queries the response was YES. [2023-11-24 21:46:50,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 1342 events. 833/1342 cut-off events. For 932/932 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6217 event pairs, 175 based on Foata normal form. 48/1361 useless extension candidates. Maximal degree in co-relation 3406. Up to 466 conditions per place. [2023-11-24 21:46:50,948 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 52 selfloop transitions, 11 changer transitions 1/73 dead transitions. [2023-11-24 21:46:50,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 352 flow [2023-11-24 21:46:50,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:46:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:46:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2023-11-24 21:46:50,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-11-24 21:46:50,956 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 138 transitions. [2023-11-24 21:46:50,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 138 transitions. [2023-11-24 21:46:50,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:50,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 138 transitions. [2023-11-24 21:46:50,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,961 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 148 flow. Second operand 6 states and 138 transitions. [2023-11-24 21:46:50,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 352 flow [2023-11-24 21:46:50,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 327 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-24 21:46:50,977 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 162 flow [2023-11-24 21:46:50,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-11-24 21:46:50,980 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-11-24 21:46:50,981 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 162 flow [2023-11-24 21:46:50,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:50,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:50,982 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] [2023-11-24 21:46:50,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:46:50,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:50,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:50,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1632938543, now seen corresponding path program 1 times [2023-11-24 21:46:50,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:50,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212014323] [2023-11-24 21:46:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:52,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:52,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212014323] [2023-11-24 21:46:52,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212014323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:52,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:52,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:46:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934107782] [2023-11-24 21:46:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:52,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:46:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:46:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:46:52,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:46:52,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 162 flow. Second operand has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:52,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:52,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:46:52,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:53,603 INFO L124 PetriNetUnfolderBase]: 1237/2266 cut-off events. [2023-11-24 21:46:53,603 INFO L125 PetriNetUnfolderBase]: For 1206/1230 co-relation queries the response was YES. [2023-11-24 21:46:53,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5416 conditions, 2266 events. 1237/2266 cut-off events. For 1206/1230 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13775 event pairs, 300 based on Foata normal form. 8/2189 useless extension candidates. Maximal degree in co-relation 5401. Up to 777 conditions per place. [2023-11-24 21:46:53,625 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 38 selfloop transitions, 10 changer transitions 30/95 dead transitions. [2023-11-24 21:46:53,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 456 flow [2023-11-24 21:46:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:46:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:46:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 205 transitions. [2023-11-24 21:46:53,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2023-11-24 21:46:53,628 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 205 transitions. [2023-11-24 21:46:53,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 205 transitions. [2023-11-24 21:46:53,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:53,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 205 transitions. [2023-11-24 21:46:53,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:53,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:53,633 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:53,633 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 162 flow. Second operand 9 states and 205 transitions. [2023-11-24 21:46:53,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 456 flow [2023-11-24 21:46:53,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 95 transitions, 376 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-11-24 21:46:53,658 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 176 flow [2023-11-24 21:46:53,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2023-11-24 21:46:53,661 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-11-24 21:46:53,661 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 176 flow [2023-11-24 21:46:53,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:53,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:53,662 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] [2023-11-24 21:46:53,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:46:53,664 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:53,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash 181614513, now seen corresponding path program 2 times [2023-11-24 21:46:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:53,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269955951] [2023-11-24 21:46:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:53,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:56,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:56,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269955951] [2023-11-24 21:46:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269955951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:56,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:46:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738595283] [2023-11-24 21:46:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:56,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:46:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:46:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:46:56,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:46:56,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 176 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:56,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:56,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:46:56,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:57,405 INFO L124 PetriNetUnfolderBase]: 1374/2517 cut-off events. [2023-11-24 21:46:57,405 INFO L125 PetriNetUnfolderBase]: For 862/866 co-relation queries the response was YES. [2023-11-24 21:46:57,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6123 conditions, 2517 events. 1374/2517 cut-off events. For 862/866 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15552 event pairs, 201 based on Foata normal form. 8/2468 useless extension candidates. Maximal degree in co-relation 6106. Up to 1077 conditions per place. [2023-11-24 21:46:57,430 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 72 selfloop transitions, 13 changer transitions 40/142 dead transitions. [2023-11-24 21:46:57,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 142 transitions, 713 flow [2023-11-24 21:46:57,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:46:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-24 21:46:57,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 310 transitions. [2023-11-24 21:46:57,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2023-11-24 21:46:57,433 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 310 transitions. [2023-11-24 21:46:57,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 310 transitions. [2023-11-24 21:46:57,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:57,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 310 transitions. [2023-11-24 21:46:57,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:57,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 40.0) internal successors, (600), 15 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:57,471 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 40.0) internal successors, (600), 15 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:57,471 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 176 flow. Second operand 14 states and 310 transitions. [2023-11-24 21:46:57,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 142 transitions, 713 flow [2023-11-24 21:46:57,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 142 transitions, 694 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-24 21:46:57,479 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 268 flow [2023-11-24 21:46:57,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=268, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2023-11-24 21:46:57,483 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2023-11-24 21:46:57,483 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 268 flow [2023-11-24 21:46:57,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:57,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:57,484 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] [2023-11-24 21:46:57,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:46:57,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:46:57,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash 260852547, now seen corresponding path program 3 times [2023-11-24 21:46:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:57,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352921596] [2023-11-24 21:46:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:57,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:46:59,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:59,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352921596] [2023-11-24 21:46:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352921596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:59,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:46:59,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707306251] [2023-11-24 21:46:59,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:59,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:46:59,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:59,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:46:59,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:46:59,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2023-11-24 21:46:59,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 268 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:59,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:59,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2023-11-24 21:46:59,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:00,354 INFO L124 PetriNetUnfolderBase]: 2435/4171 cut-off events. [2023-11-24 21:47:00,355 INFO L125 PetriNetUnfolderBase]: For 3397/3397 co-relation queries the response was YES. [2023-11-24 21:47:00,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11516 conditions, 4171 events. 2435/4171 cut-off events. For 3397/3397 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 26483 event pairs, 342 based on Foata normal form. 8/4105 useless extension candidates. Maximal degree in co-relation 11495. Up to 2061 conditions per place. [2023-11-24 21:47:00,394 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 67 selfloop transitions, 6 changer transitions 30/118 dead transitions. [2023-11-24 21:47:00,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 118 transitions, 730 flow [2023-11-24 21:47:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:47:00,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:47:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2023-11-24 21:47:00,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2023-11-24 21:47:00,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2023-11-24 21:47:00,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2023-11-24 21:47:00,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:00,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2023-11-24 21:47:00,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:00,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:00,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:00,400 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 268 flow. Second operand 7 states and 158 transitions. [2023-11-24 21:47:00,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 118 transitions, 730 flow [2023-11-24 21:47:00,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 712 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-24 21:47:00,411 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 282 flow [2023-11-24 21:47:00,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-11-24 21:47:00,412 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-11-24 21:47:00,413 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 282 flow [2023-11-24 21:47:00,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:00,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:00,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:00,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:47:00,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:00,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:00,414 INFO L85 PathProgramCache]: Analyzing trace with hash -113961833, now seen corresponding path program 4 times [2023-11-24 21:47:00,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:00,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191491946] [2023-11-24 21:47:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:02,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191491946] [2023-11-24 21:47:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191491946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:02,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:02,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:47:02,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763977986] [2023-11-24 21:47:02,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:02,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:47:02,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:02,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:47:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:47:02,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:47:02,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 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) [2023-11-24 21:47:02,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:02,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:47:02,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:03,520 INFO L124 PetriNetUnfolderBase]: 982/1817 cut-off events. [2023-11-24 21:47:03,521 INFO L125 PetriNetUnfolderBase]: For 2090/2120 co-relation queries the response was YES. [2023-11-24 21:47:03,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 1817 events. 982/1817 cut-off events. For 2090/2120 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10252 event pairs, 201 based on Foata normal form. 24/1792 useless extension candidates. Maximal degree in co-relation 5101. Up to 998 conditions per place. [2023-11-24 21:47:03,541 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 37 selfloop transitions, 15 changer transitions 17/86 dead transitions. [2023-11-24 21:47:03,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 523 flow [2023-11-24 21:47:03,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:47:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:47:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2023-11-24 21:47:03,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464285714285714 [2023-11-24 21:47:03,543 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 153 transitions. [2023-11-24 21:47:03,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 153 transitions. [2023-11-24 21:47:03,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:03,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 153 transitions. [2023-11-24 21:47:03,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:03,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:03,546 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:03,546 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 282 flow. Second operand 7 states and 153 transitions. [2023-11-24 21:47:03,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 523 flow [2023-11-24 21:47:03,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 478 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-24 21:47:03,553 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 332 flow [2023-11-24 21:47:03,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2023-11-24 21:47:03,555 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-11-24 21:47:03,556 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 332 flow [2023-11-24 21:47:03,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 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) [2023-11-24 21:47:03,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:03,556 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] [2023-11-24 21:47:03,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:47:03,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:03,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:03,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1501692655, now seen corresponding path program 5 times [2023-11-24 21:47:03,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:03,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226109481] [2023-11-24 21:47:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:03,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:04,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:04,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226109481] [2023-11-24 21:47:04,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226109481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:04,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:47:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548045225] [2023-11-24 21:47:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:04,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:47:04,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:04,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:47:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:47:04,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2023-11-24 21:47:04,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2023-11-24 21:47:04,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:04,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2023-11-24 21:47:04,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:05,563 INFO L124 PetriNetUnfolderBase]: 1999/3466 cut-off events. [2023-11-24 21:47:05,564 INFO L125 PetriNetUnfolderBase]: For 6133/6185 co-relation queries the response was YES. [2023-11-24 21:47:05,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10555 conditions, 3466 events. 1999/3466 cut-off events. For 6133/6185 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 21764 event pairs, 490 based on Foata normal form. 57/3418 useless extension candidates. Maximal degree in co-relation 10532. Up to 1457 conditions per place. [2023-11-24 21:47:05,592 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 62 selfloop transitions, 3 changer transitions 28/111 dead transitions. [2023-11-24 21:47:05,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 111 transitions, 842 flow [2023-11-24 21:47:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:47:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:47:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2023-11-24 21:47:05,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2023-11-24 21:47:05,594 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 134 transitions. [2023-11-24 21:47:05,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 134 transitions. [2023-11-24 21:47:05,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:05,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 134 transitions. [2023-11-24 21:47:05,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:05,596 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 332 flow. Second operand 6 states and 134 transitions. [2023-11-24 21:47:05,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 111 transitions, 842 flow [2023-11-24 21:47:05,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 111 transitions, 794 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-11-24 21:47:05,647 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 324 flow [2023-11-24 21:47:05,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-24 21:47:05,649 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2023-11-24 21:47:05,649 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 324 flow [2023-11-24 21:47:05,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2023-11-24 21:47:05,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:05,649 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] [2023-11-24 21:47:05,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:47:05,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:05,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash -376520433, now seen corresponding path program 6 times [2023-11-24 21:47:05,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:05,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687460949] [2023-11-24 21:47:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:05,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687460949] [2023-11-24 21:47:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687460949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:07,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:47:07,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193568607] [2023-11-24 21:47:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:07,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:47:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:07,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:47:07,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:47:07,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:47:07,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 324 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:07,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:07,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:47:07,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:08,440 INFO L124 PetriNetUnfolderBase]: 1309/2390 cut-off events. [2023-11-24 21:47:08,441 INFO L125 PetriNetUnfolderBase]: For 2510/2588 co-relation queries the response was YES. [2023-11-24 21:47:08,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6671 conditions, 2390 events. 1309/2390 cut-off events. For 2510/2588 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14504 event pairs, 168 based on Foata normal form. 22/2339 useless extension candidates. Maximal degree in co-relation 6648. Up to 768 conditions per place. [2023-11-24 21:47:08,462 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 53 selfloop transitions, 15 changer transitions 26/111 dead transitions. [2023-11-24 21:47:08,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 111 transitions, 696 flow [2023-11-24 21:47:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:47:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:47:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2023-11-24 21:47:08,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-11-24 21:47:08,464 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 204 transitions. [2023-11-24 21:47:08,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 204 transitions. [2023-11-24 21:47:08,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:08,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 204 transitions. [2023-11-24 21:47:08,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 22.666666666666668) internal successors, (204), 9 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,466 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,467 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 324 flow. Second operand 9 states and 204 transitions. [2023-11-24 21:47:08,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 111 transitions, 696 flow [2023-11-24 21:47:08,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 111 transitions, 677 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-24 21:47:08,474 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 385 flow [2023-11-24 21:47:08,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=385, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2023-11-24 21:47:08,475 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 29 predicate places. [2023-11-24 21:47:08,475 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 385 flow [2023-11-24 21:47:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:08,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:08,475 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] [2023-11-24 21:47:08,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:47:08,476 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:08,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash 557517369, now seen corresponding path program 7 times [2023-11-24 21:47:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:08,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361915157] [2023-11-24 21:47:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:09,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:09,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361915157] [2023-11-24 21:47:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361915157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:09,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:09,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:47:09,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923607538] [2023-11-24 21:47:09,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:09,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:47:09,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:09,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:47:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:47:09,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:47:09,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 385 flow. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 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) [2023-11-24 21:47:09,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:09,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:47:09,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:10,665 INFO L124 PetriNetUnfolderBase]: 1378/2497 cut-off events. [2023-11-24 21:47:10,665 INFO L125 PetriNetUnfolderBase]: For 3994/4064 co-relation queries the response was YES. [2023-11-24 21:47:10,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7567 conditions, 2497 events. 1378/2497 cut-off events. For 3994/4064 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 15296 event pairs, 372 based on Foata normal form. 24/2409 useless extension candidates. Maximal degree in co-relation 7542. Up to 1350 conditions per place. [2023-11-24 21:47:10,689 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 65 selfloop transitions, 19 changer transitions 21/122 dead transitions. [2023-11-24 21:47:10,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 122 transitions, 940 flow [2023-11-24 21:47:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:47:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:47:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2023-11-24 21:47:10,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2023-11-24 21:47:10,691 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 202 transitions. [2023-11-24 21:47:10,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 202 transitions. [2023-11-24 21:47:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:10,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 202 transitions. [2023-11-24 21:47:10,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 22.444444444444443) internal successors, (202), 9 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:10,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:10,694 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:10,694 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 385 flow. Second operand 9 states and 202 transitions. [2023-11-24 21:47:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 122 transitions, 940 flow [2023-11-24 21:47:10,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 122 transitions, 879 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-11-24 21:47:10,708 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 541 flow [2023-11-24 21:47:10,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=541, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-11-24 21:47:10,709 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 31 predicate places. [2023-11-24 21:47:10,709 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 541 flow [2023-11-24 21:47:10,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 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) [2023-11-24 21:47:10,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:10,710 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] [2023-11-24 21:47:10,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:47:10,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:10,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:10,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2041837963, now seen corresponding path program 8 times [2023-11-24 21:47:10,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:10,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839026445] [2023-11-24 21:47:10,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:10,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:11,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:11,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839026445] [2023-11-24 21:47:11,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839026445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:11,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:11,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:47:11,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673610080] [2023-11-24 21:47:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:47:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:11,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:47:11,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:47:11,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:47:11,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 541 flow. Second operand has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:11,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:11,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:47:11,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:12,365 INFO L124 PetriNetUnfolderBase]: 1403/2541 cut-off events. [2023-11-24 21:47:12,365 INFO L125 PetriNetUnfolderBase]: For 4112/4250 co-relation queries the response was YES. [2023-11-24 21:47:12,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7953 conditions, 2541 events. 1403/2541 cut-off events. For 4112/4250 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 15539 event pairs, 500 based on Foata normal form. 52/2501 useless extension candidates. Maximal degree in co-relation 7927. Up to 1365 conditions per place. [2023-11-24 21:47:12,386 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 53 selfloop transitions, 17 changer transitions 39/126 dead transitions. [2023-11-24 21:47:12,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 1016 flow [2023-11-24 21:47:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:47:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:47:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2023-11-24 21:47:12,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2023-11-24 21:47:12,388 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 214 transitions. [2023-11-24 21:47:12,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 214 transitions. [2023-11-24 21:47:12,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:12,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 214 transitions. [2023-11-24 21:47:12,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.4) internal successors, (214), 10 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,391 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,391 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 541 flow. Second operand 10 states and 214 transitions. [2023-11-24 21:47:12,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 1016 flow [2023-11-24 21:47:12,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 974 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-11-24 21:47:12,403 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 545 flow [2023-11-24 21:47:12,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=545, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2023-11-24 21:47:12,403 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 38 predicate places. [2023-11-24 21:47:12,404 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 545 flow [2023-11-24 21:47:12,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:12,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:12,404 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] [2023-11-24 21:47:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:47:12,405 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:12,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1280643269, now seen corresponding path program 9 times [2023-11-24 21:47:12,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:12,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976011239] [2023-11-24 21:47:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:12,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:13,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:13,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:13,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976011239] [2023-11-24 21:47:13,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976011239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:13,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:13,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:47:13,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293271403] [2023-11-24 21:47:13,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:13,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:47:13,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:47:13,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:47:13,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:47:13,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 545 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:13,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:13,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:47:13,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:14,860 INFO L124 PetriNetUnfolderBase]: 1364/2478 cut-off events. [2023-11-24 21:47:14,861 INFO L125 PetriNetUnfolderBase]: For 4372/4504 co-relation queries the response was YES. [2023-11-24 21:47:14,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7930 conditions, 2478 events. 1364/2478 cut-off events. For 4372/4504 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 15306 event pairs, 250 based on Foata normal form. 56/2447 useless extension candidates. Maximal degree in co-relation 7901. Up to 1105 conditions per place. [2023-11-24 21:47:14,887 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 86 selfloop transitions, 34 changer transitions 21/158 dead transitions. [2023-11-24 21:47:14,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 158 transitions, 1201 flow [2023-11-24 21:47:14,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-24 21:47:14,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-24 21:47:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 362 transitions. [2023-11-24 21:47:14,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323529411764706 [2023-11-24 21:47:14,891 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 362 transitions. [2023-11-24 21:47:14,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 362 transitions. [2023-11-24 21:47:14,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:14,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 362 transitions. [2023-11-24 21:47:14,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 21.294117647058822) internal successors, (362), 17 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 40.0) internal successors, (720), 18 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,897 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 40.0) internal successors, (720), 18 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,897 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 545 flow. Second operand 17 states and 362 transitions. [2023-11-24 21:47:14,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 158 transitions, 1201 flow [2023-11-24 21:47:14,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 158 transitions, 1140 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-11-24 21:47:14,913 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 704 flow [2023-11-24 21:47:14,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=704, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2023-11-24 21:47:14,914 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2023-11-24 21:47:14,915 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 704 flow [2023-11-24 21:47:14,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:14,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:14,915 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] [2023-11-24 21:47:14,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:47:14,916 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:14,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash -569246219, now seen corresponding path program 10 times [2023-11-24 21:47:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100339445] [2023-11-24 21:47:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:14,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:15,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:15,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100339445] [2023-11-24 21:47:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100339445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:15,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:15,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:47:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795041394] [2023-11-24 21:47:15,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:15,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:47:15,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:15,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:47:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:47:15,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:47:15,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 704 flow. Second operand has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:15,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:15,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:47:15,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:16,484 INFO L124 PetriNetUnfolderBase]: 1328/2392 cut-off events. [2023-11-24 21:47:16,484 INFO L125 PetriNetUnfolderBase]: For 5448/5501 co-relation queries the response was YES. [2023-11-24 21:47:16,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 2392 events. 1328/2392 cut-off events. For 5448/5501 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 14639 event pairs, 739 based on Foata normal form. 23/2311 useless extension candidates. Maximal degree in co-relation 7917. Up to 1412 conditions per place. [2023-11-24 21:47:16,503 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 52 selfloop transitions, 13 changer transitions 29/111 dead transitions. [2023-11-24 21:47:16,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 111 transitions, 980 flow [2023-11-24 21:47:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:47:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:47:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 192 transitions. [2023-11-24 21:47:16,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-24 21:47:16,505 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 192 transitions. [2023-11-24 21:47:16,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 192 transitions. [2023-11-24 21:47:16,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:16,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 192 transitions. [2023-11-24 21:47:16,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 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) [2023-11-24 21:47:16,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:16,509 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:16,509 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 704 flow. Second operand 9 states and 192 transitions. [2023-11-24 21:47:16,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 111 transitions, 980 flow [2023-11-24 21:47:16,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 904 flow, removed 25 selfloop flow, removed 9 redundant places. [2023-11-24 21:47:16,528 INFO L231 Difference]: Finished difference. Result has 92 places, 72 transitions, 581 flow [2023-11-24 21:47:16,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=581, PETRI_PLACES=92, PETRI_TRANSITIONS=72} [2023-11-24 21:47:16,529 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-11-24 21:47:16,529 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 72 transitions, 581 flow [2023-11-24 21:47:16,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.22222222222222) internal successors, (146), 9 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:16,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:16,530 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] [2023-11-24 21:47:16,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:47:16,530 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:16,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 101258751, now seen corresponding path program 11 times [2023-11-24 21:47:16,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:16,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024778415] [2023-11-24 21:47:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:16,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:18,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:18,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024778415] [2023-11-24 21:47:18,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024778415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:18,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:18,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:47:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743684082] [2023-11-24 21:47:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:47:18,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:47:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:47:18,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2023-11-24 21:47:18,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 72 transitions, 581 flow. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:18,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:18,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2023-11-24 21:47:18,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:19,114 INFO L124 PetriNetUnfolderBase]: 1455/2623 cut-off events. [2023-11-24 21:47:19,115 INFO L125 PetriNetUnfolderBase]: For 4916/4916 co-relation queries the response was YES. [2023-11-24 21:47:19,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8631 conditions, 2623 events. 1455/2623 cut-off events. For 4916/4916 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 16406 event pairs, 432 based on Foata normal form. 8/2522 useless extension candidates. Maximal degree in co-relation 8601. Up to 1001 conditions per place. [2023-11-24 21:47:19,142 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 62 selfloop transitions, 22 changer transitions 19/119 dead transitions. [2023-11-24 21:47:19,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 119 transitions, 991 flow [2023-11-24 21:47:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:47:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:47:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2023-11-24 21:47:19,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361111111111111 [2023-11-24 21:47:19,146 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 193 transitions. [2023-11-24 21:47:19,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 193 transitions. [2023-11-24 21:47:19,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:19,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 193 transitions. [2023-11-24 21:47:19,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.444444444444443) internal successors, (193), 9 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,149 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,149 INFO L175 Difference]: Start difference. First operand has 92 places, 72 transitions, 581 flow. Second operand 9 states and 193 transitions. [2023-11-24 21:47:19,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 119 transitions, 991 flow [2023-11-24 21:47:19,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 922 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-11-24 21:47:19,173 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 605 flow [2023-11-24 21:47:19,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=605, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2023-11-24 21:47:19,175 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2023-11-24 21:47:19,175 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 605 flow [2023-11-24 21:47:19,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:19,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:19,176 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] [2023-11-24 21:47:19,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:47:19,176 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:19,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash 946904161, now seen corresponding path program 12 times [2023-11-24 21:47:19,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:19,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626511292] [2023-11-24 21:47:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:20,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626511292] [2023-11-24 21:47:20,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626511292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:20,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:20,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:47:20,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065646171] [2023-11-24 21:47:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:20,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:47:20,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:20,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:47:20,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:47:20,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2023-11-24 21:47:20,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 605 flow. Second operand has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:20,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:20,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2023-11-24 21:47:20,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:21,665 INFO L124 PetriNetUnfolderBase]: 1128/2066 cut-off events. [2023-11-24 21:47:21,666 INFO L125 PetriNetUnfolderBase]: For 4187/4243 co-relation queries the response was YES. [2023-11-24 21:47:21,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7137 conditions, 2066 events. 1128/2066 cut-off events. For 4187/4243 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 12236 event pairs, 330 based on Foata normal form. 26/2011 useless extension candidates. Maximal degree in co-relation 7109. Up to 1346 conditions per place. [2023-11-24 21:47:21,685 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 57 selfloop transitions, 10 changer transitions 37/121 dead transitions. [2023-11-24 21:47:21,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 121 transitions, 1035 flow [2023-11-24 21:47:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:47:21,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:47:21,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 247 transitions. [2023-11-24 21:47:21,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145833333333333 [2023-11-24 21:47:21,688 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 247 transitions. [2023-11-24 21:47:21,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 247 transitions. [2023-11-24 21:47:21,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:21,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 247 transitions. [2023-11-24 21:47:21,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.583333333333332) internal successors, (247), 12 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:21,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 40.0) internal successors, (520), 13 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:21,695 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 40.0) internal successors, (520), 13 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:21,695 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 605 flow. Second operand 12 states and 247 transitions. [2023-11-24 21:47:21,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 121 transitions, 1035 flow [2023-11-24 21:47:21,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 121 transitions, 943 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-24 21:47:21,708 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 514 flow [2023-11-24 21:47:21,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=514, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2023-11-24 21:47:21,709 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2023-11-24 21:47:21,709 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 514 flow [2023-11-24 21:47:21,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.666666666666666) internal successors, (188), 12 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:21,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:21,710 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] [2023-11-24 21:47:21,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:47:21,710 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:47:21,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:21,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1909009241, now seen corresponding path program 13 times [2023-11-24 21:47:21,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:21,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590319694] [2023-11-24 21:47:21,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:21,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:23,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:47:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590319694] [2023-11-24 21:47:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590319694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:23,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:23,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:47:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884418407] [2023-11-24 21:47:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:47:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:47:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:47:23,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2023-11-24 21:47:23,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:23,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:23,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2023-11-24 21:47:23,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:24,162 INFO L124 PetriNetUnfolderBase]: 1443/2623 cut-off events. [2023-11-24 21:47:24,163 INFO L125 PetriNetUnfolderBase]: For 4119/4119 co-relation queries the response was YES. [2023-11-24 21:47:24,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8389 conditions, 2623 events. 1443/2623 cut-off events. For 4119/4119 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 16624 event pairs, 360 based on Foata normal form. 8/2540 useless extension candidates. Maximal degree in co-relation 8361. Up to 1366 conditions per place.