./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:49:29,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:49:29,085 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:49:29,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:49:29,090 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:49:29,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:49:29,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:49:29,115 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:49:29,116 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:49:29,116 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:49:29,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:49:29,117 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:49:29,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:49:29,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:49:29,119 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:49:29,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:49:29,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:49:29,121 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:49:29,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:49:29,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:49:29,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:49:29,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:49:29,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:49:29,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:49:29,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:49:29,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:49:29,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:49:29,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:49:29,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:49:29,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:49:29,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:49:29,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:49:29,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:49:29,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:49:29,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:49:29,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:49:29,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:49:29,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:49:29,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:49:29,129 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:49:29,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:49:29,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:49:29,130 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_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f1f05cefb3bd84a08d6d936499ca6f215f6edf0bfbf58f9874b646b6408f7c8 [2023-11-29 04:49:29,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:49:29,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:49:29,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:49:29,383 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:49:29,383 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:49:29,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-29 04:49:32,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:49:32,252 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:49:32,252 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2023-11-29 04:49:32,261 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/data/c60208815/345e6b2d32c4489bb06e0da458891672/FLAG0970f05c1 [2023-11-29 04:49:32,272 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/data/c60208815/345e6b2d32c4489bb06e0da458891672 [2023-11-29 04:49:32,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:49:32,275 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:49:32,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:49:32,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:49:32,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:49:32,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b35f810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32, skipping insertion in model container [2023-11-29 04:49:32,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:49:32,477 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_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-29 04:49:32,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:49:32,492 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:49:32,522 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_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5465,5478] [2023-11-29 04:49:32,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:49:32,531 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:49:32,531 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:49:32,536 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:49:32,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32 WrapperNode [2023-11-29 04:49:32,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:49:32,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:49:32,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:49:32,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:49:32,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,551 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,575 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2023-11-29 04:49:32,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:49:32,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:49:32,576 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:49:32,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:49:32,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,589 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,603 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 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]. [2023-11-29 04:49:32,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:49:32,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:49:32,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:49:32,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:49:32,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (1/1) ... [2023-11-29 04:49:32,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:49:32,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:49:32,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:49:32,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a95668b8-e0f0-4fa0-8c9c-44531b9c0824/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:49:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:49:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 04:49:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 04:49:32,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 04:49:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 04:49:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 04:49:32,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 04:49:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:49:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 04:49:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 04:49:32,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 04:49:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:49:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 04:49:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 04:49:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 04:49:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 04:49:32,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 04:49:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 04:49:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:49:32,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:49:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 04:49:32,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 04:49:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 04:49:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 04:49:32,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:49:32,702 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 04:49:32,832 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:49:32,835 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:49:33,122 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:49:33,376 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:49:33,376 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:49:33,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:49:33 BoogieIcfgContainer [2023-11-29 04:49:33,377 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:49:33,379 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:49:33,379 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:49:33,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:49:33,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:49:32" (1/3) ... [2023-11-29 04:49:33,383 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4463ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:49:33, skipping insertion in model container [2023-11-29 04:49:33,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:49:32" (2/3) ... [2023-11-29 04:49:33,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4463ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:49:33, skipping insertion in model container [2023-11-29 04:49:33,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:49:33" (3/3) ... [2023-11-29 04:49:33,385 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-11-29 04:49:33,398 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 04:49:33,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:49:33,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:49:33,409 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 04:49:33,450 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 04:49:33,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 60 transitions, 141 flow [2023-11-29 04:49:33,513 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2023-11-29 04:49:33,514 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 04:49:33,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 0/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 93 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-29 04:49:33,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 60 transitions, 141 flow [2023-11-29 04:49:33,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 56 transitions, 130 flow [2023-11-29 04:49:33,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:49:33,534 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;@360ae00a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:49:33,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 04:49:33,554 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 04:49:33,554 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2023-11-29 04:49:33,554 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 04:49:33,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:33,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:33,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:33,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:33,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1532729853, now seen corresponding path program 1 times [2023-11-29 04:49:33,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:33,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415656311] [2023-11-29 04:49:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:34,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:34,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415656311] [2023-11-29 04:49:34,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415656311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:34,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:34,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:49:34,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353123719] [2023-11-29 04:49:34,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:34,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:49:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:49:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:49:34,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-29 04:49:34,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 130 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:34,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:34,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-29 04:49:34,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:35,867 INFO L124 PetriNetUnfolderBase]: 4780/8088 cut-off events. [2023-11-29 04:49:35,867 INFO L125 PetriNetUnfolderBase]: For 459/459 co-relation queries the response was YES. [2023-11-29 04:49:35,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15836 conditions, 8088 events. 4780/8088 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 55899 event pairs, 1631 based on Foata normal form. 1/8000 useless extension candidates. Maximal degree in co-relation 13619. Up to 2389 conditions per place. [2023-11-29 04:49:35,934 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 153 selfloop transitions, 15 changer transitions 25/212 dead transitions. [2023-11-29 04:49:35,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 212 transitions, 900 flow [2023-11-29 04:49:35,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:49:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:49:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 436 transitions. [2023-11-29 04:49:35,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6606060606060606 [2023-11-29 04:49:35,951 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 436 transitions. [2023-11-29 04:49:35,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 436 transitions. [2023-11-29 04:49:35,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:35,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 436 transitions. [2023-11-29 04:49:35,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.63636363636363) internal successors, (436), 11 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:35,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:49:35,966 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:49:35,967 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 130 flow. Second operand 11 states and 436 transitions. [2023-11-29 04:49:35,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 212 transitions, 900 flow [2023-11-29 04:49:35,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 212 transitions, 840 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 04:49:35,998 INFO L231 Difference]: Finished difference. Result has 74 places, 72 transitions, 210 flow [2023-11-29 04:49:36,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=210, PETRI_PLACES=74, PETRI_TRANSITIONS=72} [2023-11-29 04:49:36,004 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2023-11-29 04:49:36,004 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 72 transitions, 210 flow [2023-11-29 04:49:36,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:36,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:36,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:36,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 04:49:36,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:36,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1508694143, now seen corresponding path program 2 times [2023-11-29 04:49:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:36,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353557282] [2023-11-29 04:49:36,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:36,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:36,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:36,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353557282] [2023-11-29 04:49:36,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353557282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:36,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:36,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:49:36,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801652601] [2023-11-29 04:49:36,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:36,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:49:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:49:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:49:36,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2023-11-29 04:49:36,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:36,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:36,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2023-11-29 04:49:36,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:37,947 INFO L124 PetriNetUnfolderBase]: 7031/11640 cut-off events. [2023-11-29 04:49:37,948 INFO L125 PetriNetUnfolderBase]: For 138/140 co-relation queries the response was YES. [2023-11-29 04:49:37,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23341 conditions, 11640 events. 7031/11640 cut-off events. For 138/140 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 79884 event pairs, 2659 based on Foata normal form. 114/11464 useless extension candidates. Maximal degree in co-relation 23314. Up to 9151 conditions per place. [2023-11-29 04:49:38,044 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 101 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2023-11-29 04:49:38,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 156 transitions, 628 flow [2023-11-29 04:49:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:49:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:49:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2023-11-29 04:49:38,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60625 [2023-11-29 04:49:38,048 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 291 transitions. [2023-11-29 04:49:38,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 291 transitions. [2023-11-29 04:49:38,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:38,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 291 transitions. [2023-11-29 04:49:38,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.375) internal successors, (291), 8 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:38,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:38,053 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:38,053 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 210 flow. Second operand 8 states and 291 transitions. [2023-11-29 04:49:38,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 156 transitions, 628 flow [2023-11-29 04:49:38,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 156 transitions, 626 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 04:49:38,060 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 334 flow [2023-11-29 04:49:38,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2023-11-29 04:49:38,061 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2023-11-29 04:49:38,062 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 334 flow [2023-11-29 04:49:38,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:38,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:38,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:38,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 04:49:38,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:38,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:38,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1353143003, now seen corresponding path program 3 times [2023-11-29 04:49:38,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:38,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150705753] [2023-11-29 04:49:38,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:38,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:38,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:38,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150705753] [2023-11-29 04:49:38,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150705753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:38,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:38,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082875803] [2023-11-29 04:49:38,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:38,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:38,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:38,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2023-11-29 04:49:38,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:38,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:38,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2023-11-29 04:49:38,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:39,038 INFO L124 PetriNetUnfolderBase]: 3950/7713 cut-off events. [2023-11-29 04:49:39,039 INFO L125 PetriNetUnfolderBase]: For 1174/1199 co-relation queries the response was YES. [2023-11-29 04:49:39,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16391 conditions, 7713 events. 3950/7713 cut-off events. For 1174/1199 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 59891 event pairs, 2585 based on Foata normal form. 118/7535 useless extension candidates. Maximal degree in co-relation 12421. Up to 4869 conditions per place. [2023-11-29 04:49:39,094 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 61 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-11-29 04:49:39,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 516 flow [2023-11-29 04:49:39,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:49:39,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2023-11-29 04:49:39,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-11-29 04:49:39,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2023-11-29 04:49:39,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2023-11-29 04:49:39,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:39,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2023-11-29 04:49:39,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:39,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2023-11-29 04:49:39,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2023-11-29 04:49:39,099 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 334 flow. Second operand 3 states and 128 transitions. [2023-11-29 04:49:39,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 516 flow [2023-11-29 04:49:39,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 112 transitions, 516 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 04:49:39,116 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 344 flow [2023-11-29 04:49:39,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-11-29 04:49:39,117 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 19 predicate places. [2023-11-29 04:49:39,117 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 344 flow [2023-11-29 04:49:39,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:39,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:39,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:39,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 04:49:39,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:39,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1205566411, now seen corresponding path program 4 times [2023-11-29 04:49:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:39,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686022665] [2023-11-29 04:49:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:39,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:39,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:39,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686022665] [2023-11-29 04:49:39,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686022665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:39,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:39,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:39,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046498985] [2023-11-29 04:49:39,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:39,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:39,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:39,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2023-11-29 04:49:39,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:39,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:39,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2023-11-29 04:49:39,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:40,139 INFO L124 PetriNetUnfolderBase]: 3916/7783 cut-off events. [2023-11-29 04:49:40,139 INFO L125 PetriNetUnfolderBase]: For 1651/1721 co-relation queries the response was YES. [2023-11-29 04:49:40,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17158 conditions, 7783 events. 3916/7783 cut-off events. For 1651/1721 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 61716 event pairs, 2809 based on Foata normal form. 110/7567 useless extension candidates. Maximal degree in co-relation 13222. Up to 4744 conditions per place. [2023-11-29 04:49:40,188 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 62 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-11-29 04:49:40,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 113 transitions, 539 flow [2023-11-29 04:49:40,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:49:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2023-11-29 04:49:40,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-11-29 04:49:40,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2023-11-29 04:49:40,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2023-11-29 04:49:40,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:40,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2023-11-29 04:49:40,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:40,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2023-11-29 04:49:40,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2023-11-29 04:49:40,192 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 344 flow. Second operand 3 states and 128 transitions. [2023-11-29 04:49:40,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 113 transitions, 539 flow [2023-11-29 04:49:40,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 113 transitions, 535 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:49:40,203 INFO L231 Difference]: Finished difference. Result has 86 places, 93 transitions, 350 flow [2023-11-29 04:49:40,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=86, PETRI_TRANSITIONS=93} [2023-11-29 04:49:40,204 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2023-11-29 04:49:40,205 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 93 transitions, 350 flow [2023-11-29 04:49:40,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:40,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:40,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:40,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 04:49:40,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:40,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -757618555, now seen corresponding path program 5 times [2023-11-29 04:49:40,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:40,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455691264] [2023-11-29 04:49:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:40,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:40,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:40,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455691264] [2023-11-29 04:49:40,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455691264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:40,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:40,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:49:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786170535] [2023-11-29 04:49:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:49:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:49:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:49:40,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-29 04:49:40,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 93 transitions, 350 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:40,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:40,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-29 04:49:40,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:41,967 INFO L124 PetriNetUnfolderBase]: 7187/12531 cut-off events. [2023-11-29 04:49:41,967 INFO L125 PetriNetUnfolderBase]: For 3598/3680 co-relation queries the response was YES. [2023-11-29 04:49:41,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29665 conditions, 12531 events. 7187/12531 cut-off events. For 3598/3680 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 94282 event pairs, 2355 based on Foata normal form. 22/12300 useless extension candidates. Maximal degree in co-relation 19882. Up to 3074 conditions per place. [2023-11-29 04:49:42,027 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 194 selfloop transitions, 22 changer transitions 22/267 dead transitions. [2023-11-29 04:49:42,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 267 transitions, 1353 flow [2023-11-29 04:49:42,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:49:42,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:49:42,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 440 transitions. [2023-11-29 04:49:42,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 04:49:42,030 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 440 transitions. [2023-11-29 04:49:42,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 440 transitions. [2023-11-29 04:49:42,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:42,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 440 transitions. [2023-11-29 04:49:42,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 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) [2023-11-29 04:49:42,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:49:42,034 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:49:42,034 INFO L175 Difference]: Start difference. First operand has 86 places, 93 transitions, 350 flow. Second operand 11 states and 440 transitions. [2023-11-29 04:49:42,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 267 transitions, 1353 flow [2023-11-29 04:49:42,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 267 transitions, 1349 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:49:42,048 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 502 flow [2023-11-29 04:49:42,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=502, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2023-11-29 04:49:42,049 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 33 predicate places. [2023-11-29 04:49:42,049 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 502 flow [2023-11-29 04:49:42,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:42,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:42,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 04:49:42,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:42,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:42,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1936492561, now seen corresponding path program 6 times [2023-11-29 04:49:42,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:42,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68888079] [2023-11-29 04:49:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:42,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:42,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:42,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68888079] [2023-11-29 04:49:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68888079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:42,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:42,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:49:42,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074901821] [2023-11-29 04:49:42,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:42,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:49:42,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:42,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:49:42,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:49:42,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-29 04:49:42,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 502 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:42,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:42,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-29 04:49:42,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:45,007 INFO L124 PetriNetUnfolderBase]: 12555/21410 cut-off events. [2023-11-29 04:49:45,008 INFO L125 PetriNetUnfolderBase]: For 7495/7592 co-relation queries the response was YES. [2023-11-29 04:49:45,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52292 conditions, 21410 events. 12555/21410 cut-off events. For 7495/7592 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 160996 event pairs, 5058 based on Foata normal form. 230/21051 useless extension candidates. Maximal degree in co-relation 52225. Up to 14348 conditions per place. [2023-11-29 04:49:45,118 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 169 selfloop transitions, 61 changer transitions 1/278 dead transitions. [2023-11-29 04:49:45,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 278 transitions, 1512 flow [2023-11-29 04:49:45,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:49:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 04:49:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 442 transitions. [2023-11-29 04:49:45,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-11-29 04:49:45,121 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 442 transitions. [2023-11-29 04:49:45,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 442 transitions. [2023-11-29 04:49:45,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:45,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 442 transitions. [2023-11-29 04:49:45,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 34.0) internal successors, (442), 13 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 60.0) internal successors, (840), 14 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,124 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 60.0) internal successors, (840), 14 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,124 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 502 flow. Second operand 13 states and 442 transitions. [2023-11-29 04:49:45,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 278 transitions, 1512 flow [2023-11-29 04:49:45,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 278 transitions, 1498 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-29 04:49:45,179 INFO L231 Difference]: Finished difference. Result has 117 places, 164 transitions, 983 flow [2023-11-29 04:49:45,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=983, PETRI_PLACES=117, PETRI_TRANSITIONS=164} [2023-11-29 04:49:45,180 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 51 predicate places. [2023-11-29 04:49:45,180 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 164 transitions, 983 flow [2023-11-29 04:49:45,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:45,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:45,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 04:49:45,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:45,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -214080035, now seen corresponding path program 7 times [2023-11-29 04:49:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357575341] [2023-11-29 04:49:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:45,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:45,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:45,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357575341] [2023-11-29 04:49:45,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357575341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:45,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:45,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:49:45,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618440773] [2023-11-29 04:49:45,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:45,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:49:45,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:45,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:49:45,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:49:45,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2023-11-29 04:49:45,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 164 transitions, 983 flow. Second operand has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:45,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:45,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2023-11-29 04:49:45,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:48,633 INFO L124 PetriNetUnfolderBase]: 14373/24605 cut-off events. [2023-11-29 04:49:48,633 INFO L125 PetriNetUnfolderBase]: For 30296/31110 co-relation queries the response was YES. [2023-11-29 04:49:48,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72690 conditions, 24605 events. 14373/24605 cut-off events. For 30296/31110 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 191513 event pairs, 4384 based on Foata normal form. 242/23973 useless extension candidates. Maximal degree in co-relation 57568. Up to 9229 conditions per place. [2023-11-29 04:49:48,785 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 169 selfloop transitions, 58 changer transitions 1/280 dead transitions. [2023-11-29 04:49:48,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 280 transitions, 1969 flow [2023-11-29 04:49:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:49:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:49:48,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2023-11-29 04:49:48,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851851851851851 [2023-11-29 04:49:48,789 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 316 transitions. [2023-11-29 04:49:48,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 316 transitions. [2023-11-29 04:49:48,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:48,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 316 transitions. [2023-11-29 04:49:48,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 35.111111111111114) internal successors, (316), 9 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:48,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 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) [2023-11-29 04:49:48,792 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 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) [2023-11-29 04:49:48,792 INFO L175 Difference]: Start difference. First operand has 117 places, 164 transitions, 983 flow. Second operand 9 states and 316 transitions. [2023-11-29 04:49:48,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 280 transitions, 1969 flow [2023-11-29 04:49:48,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 280 transitions, 1909 flow, removed 30 selfloop flow, removed 0 redundant places. [2023-11-29 04:49:48,953 INFO L231 Difference]: Finished difference. Result has 129 places, 181 transitions, 1266 flow [2023-11-29 04:49:48,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1266, PETRI_PLACES=129, PETRI_TRANSITIONS=181} [2023-11-29 04:49:48,954 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 63 predicate places. [2023-11-29 04:49:48,955 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 181 transitions, 1266 flow [2023-11-29 04:49:48,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:48,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:48,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:48,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 04:49:48,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:48,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash -509496885, now seen corresponding path program 8 times [2023-11-29 04:49:48,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:48,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345263402] [2023-11-29 04:49:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:49,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:49,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345263402] [2023-11-29 04:49:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345263402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:49,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:49,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:49:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982111483] [2023-11-29 04:49:49,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:49,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:49:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:49:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:49:49,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 60 [2023-11-29 04:49:49,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 181 transitions, 1266 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:49,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:49,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 60 [2023-11-29 04:49:49,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:51,204 INFO L124 PetriNetUnfolderBase]: 9044/18050 cut-off events. [2023-11-29 04:49:51,204 INFO L125 PetriNetUnfolderBase]: For 24832/25397 co-relation queries the response was YES. [2023-11-29 04:49:51,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54351 conditions, 18050 events. 9044/18050 cut-off events. For 24832/25397 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 161063 event pairs, 6298 based on Foata normal form. 360/17543 useless extension candidates. Maximal degree in co-relation 45792. Up to 11487 conditions per place. [2023-11-29 04:49:51,329 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 102 selfloop transitions, 2 changer transitions 0/218 dead transitions. [2023-11-29 04:49:51,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 218 transitions, 1696 flow [2023-11-29 04:49:51,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:49:51,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 04:49:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2023-11-29 04:49:51,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2023-11-29 04:49:51,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2023-11-29 04:49:51,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2023-11-29 04:49:51,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:51,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2023-11-29 04:49:51,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2023-11-29 04:49:51,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 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) [2023-11-29 04:49:51,332 INFO L175 Difference]: Start difference. First operand has 129 places, 181 transitions, 1266 flow. Second operand 3 states and 128 transitions. [2023-11-29 04:49:51,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 218 transitions, 1696 flow [2023-11-29 04:49:51,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 218 transitions, 1637 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-29 04:49:51,495 INFO L231 Difference]: Finished difference. Result has 128 places, 180 transitions, 1220 flow [2023-11-29 04:49:51,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1220, PETRI_PLACES=128, PETRI_TRANSITIONS=180} [2023-11-29 04:49:51,496 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 62 predicate places. [2023-11-29 04:49:51,496 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 180 transitions, 1220 flow [2023-11-29 04:49:51,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:51,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:51,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 04:49:51,497 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:51,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:51,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1032939675, now seen corresponding path program 9 times [2023-11-29 04:49:51,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:51,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246428204] [2023-11-29 04:49:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:51,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246428204] [2023-11-29 04:49:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246428204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:51,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:49:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627204750] [2023-11-29 04:49:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:51,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:49:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:49:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:49:52,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2023-11-29 04:49:52,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 180 transitions, 1220 flow. Second operand has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 9 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:52,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:52,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2023-11-29 04:49:52,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:49:56,247 INFO L124 PetriNetUnfolderBase]: 21069/36558 cut-off events. [2023-11-29 04:49:56,247 INFO L125 PetriNetUnfolderBase]: For 73135/73754 co-relation queries the response was YES. [2023-11-29 04:49:56,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121000 conditions, 36558 events. 21069/36558 cut-off events. For 73135/73754 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 304646 event pairs, 3850 based on Foata normal form. 448/36049 useless extension candidates. Maximal degree in co-relation 95973. Up to 6311 conditions per place. [2023-11-29 04:49:56,548 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 202 selfloop transitions, 131 changer transitions 0/386 dead transitions. [2023-11-29 04:49:56,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 386 transitions, 3045 flow [2023-11-29 04:49:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:49:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:49:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 426 transitions. [2023-11-29 04:49:56,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2023-11-29 04:49:56,551 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 426 transitions. [2023-11-29 04:49:56,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 426 transitions. [2023-11-29 04:49:56,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:49:56,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 426 transitions. [2023-11-29 04:49:56,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.72727272727273) internal successors, (426), 11 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:56,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:49:56,555 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:49:56,555 INFO L175 Difference]: Start difference. First operand has 128 places, 180 transitions, 1220 flow. Second operand 11 states and 426 transitions. [2023-11-29 04:49:56,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 386 transitions, 3045 flow [2023-11-29 04:49:56,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 386 transitions, 3041 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 04:49:56,968 INFO L231 Difference]: Finished difference. Result has 145 places, 254 transitions, 2383 flow [2023-11-29 04:49:56,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2383, PETRI_PLACES=145, PETRI_TRANSITIONS=254} [2023-11-29 04:49:56,969 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 79 predicate places. [2023-11-29 04:49:56,969 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 254 transitions, 2383 flow [2023-11-29 04:49:56,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.22222222222222) internal successors, (227), 9 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:56,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:49:56,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:49:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 04:49:56,970 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:49:56,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:49:56,971 INFO L85 PathProgramCache]: Analyzing trace with hash 939175803, now seen corresponding path program 10 times [2023-11-29 04:49:56,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:49:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640305396] [2023-11-29 04:49:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:49:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:49:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:49:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:49:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:49:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640305396] [2023-11-29 04:49:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640305396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:49:57,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:49:57,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:49:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609279271] [2023-11-29 04:49:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:49:57,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:49:57,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:49:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:49:57,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:49:57,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-29 04:49:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 254 transitions, 2383 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:49:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:49:57,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-29 04:49:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:02,813 INFO L124 PetriNetUnfolderBase]: 22762/39871 cut-off events. [2023-11-29 04:50:02,813 INFO L125 PetriNetUnfolderBase]: For 183240/185711 co-relation queries the response was YES. [2023-11-29 04:50:03,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160049 conditions, 39871 events. 22762/39871 cut-off events. For 183240/185711 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 341600 event pairs, 8016 based on Foata normal form. 620/39283 useless extension candidates. Maximal degree in co-relation 127892. Up to 28564 conditions per place. [2023-11-29 04:50:03,231 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 257 selfloop transitions, 49 changer transitions 7/368 dead transitions. [2023-11-29 04:50:03,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 368 transitions, 3920 flow [2023-11-29 04:50:03,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:50:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:50:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 274 transitions. [2023-11-29 04:50:03,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6523809523809524 [2023-11-29 04:50:03,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 274 transitions. [2023-11-29 04:50:03,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 274 transitions. [2023-11-29 04:50:03,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:03,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 274 transitions. [2023-11-29 04:50:03,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.142857142857146) internal successors, (274), 7 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:03,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:03,235 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:03,235 INFO L175 Difference]: Start difference. First operand has 145 places, 254 transitions, 2383 flow. Second operand 7 states and 274 transitions. [2023-11-29 04:50:03,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 368 transitions, 3920 flow [2023-11-29 04:50:04,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 368 transitions, 3857 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-11-29 04:50:04,326 INFO L231 Difference]: Finished difference. Result has 154 places, 279 transitions, 2839 flow [2023-11-29 04:50:04,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2839, PETRI_PLACES=154, PETRI_TRANSITIONS=279} [2023-11-29 04:50:04,327 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 88 predicate places. [2023-11-29 04:50:04,327 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 279 transitions, 2839 flow [2023-11-29 04:50:04,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:04,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:04,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 04:50:04,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:50:04,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2068688455, now seen corresponding path program 11 times [2023-11-29 04:50:04,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:04,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954270356] [2023-11-29 04:50:04,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:04,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:04,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954270356] [2023-11-29 04:50:04,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954270356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:50:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125012961] [2023-11-29 04:50:04,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:04,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:50:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:04,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:50:04,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:50:04,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-29 04:50:04,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 279 transitions, 2839 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:04,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:04,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-29 04:50:04,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:13,188 INFO L124 PetriNetUnfolderBase]: 31496/54977 cut-off events. [2023-11-29 04:50:13,188 INFO L125 PetriNetUnfolderBase]: For 255047/257346 co-relation queries the response was YES. [2023-11-29 04:50:13,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221986 conditions, 54977 events. 31496/54977 cut-off events. For 255047/257346 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 485275 event pairs, 9862 based on Foata normal form. 642/54567 useless extension candidates. Maximal degree in co-relation 174464. Up to 25326 conditions per place. [2023-11-29 04:50:13,738 INFO L140 encePairwiseOnDemand]: 43/60 looper letters, 345 selfloop transitions, 213 changer transitions 20/625 dead transitions. [2023-11-29 04:50:13,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 625 transitions, 6706 flow [2023-11-29 04:50:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:50:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 04:50:13,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 719 transitions. [2023-11-29 04:50:13,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706349206349206 [2023-11-29 04:50:13,741 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 719 transitions. [2023-11-29 04:50:13,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 719 transitions. [2023-11-29 04:50:13,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:13,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 719 transitions. [2023-11-29 04:50:13,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 34.23809523809524) internal successors, (719), 21 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:13,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 60.0) internal successors, (1320), 22 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:13,746 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 60.0) internal successors, (1320), 22 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:13,746 INFO L175 Difference]: Start difference. First operand has 154 places, 279 transitions, 2839 flow. Second operand 21 states and 719 transitions. [2023-11-29 04:50:13,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 625 transitions, 6706 flow [2023-11-29 04:50:15,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 625 transitions, 6594 flow, removed 50 selfloop flow, removed 1 redundant places. [2023-11-29 04:50:15,172 INFO L231 Difference]: Finished difference. Result has 186 places, 385 transitions, 4851 flow [2023-11-29 04:50:15,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4851, PETRI_PLACES=186, PETRI_TRANSITIONS=385} [2023-11-29 04:50:15,173 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 120 predicate places. [2023-11-29 04:50:15,173 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 385 transitions, 4851 flow [2023-11-29 04:50:15,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:15,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:15,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:15,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 04:50:15,174 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:50:15,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1515147411, now seen corresponding path program 12 times [2023-11-29 04:50:15,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:15,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164539637] [2023-11-29 04:50:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:15,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:15,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:15,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164539637] [2023-11-29 04:50:15,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164539637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:15,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:15,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:50:15,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565496712] [2023-11-29 04:50:15,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:15,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:50:15,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:15,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:50:15,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:50:15,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-29 04:50:15,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 385 transitions, 4851 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:15,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:15,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-29 04:50:15,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:27,805 INFO L124 PetriNetUnfolderBase]: 40687/67621 cut-off events. [2023-11-29 04:50:27,805 INFO L125 PetriNetUnfolderBase]: For 351686/353249 co-relation queries the response was YES. [2023-11-29 04:50:28,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282632 conditions, 67621 events. 40687/67621 cut-off events. For 351686/353249 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 581405 event pairs, 15307 based on Foata normal form. 687/66343 useless extension candidates. Maximal degree in co-relation 243141. Up to 18899 conditions per place. [2023-11-29 04:50:28,721 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 377 selfloop transitions, 31 changer transitions 12/617 dead transitions. [2023-11-29 04:50:28,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 617 transitions, 7298 flow [2023-11-29 04:50:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:50:28,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:50:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 436 transitions. [2023-11-29 04:50:28,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6606060606060606 [2023-11-29 04:50:28,723 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 436 transitions. [2023-11-29 04:50:28,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 436 transitions. [2023-11-29 04:50:28,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:28,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 436 transitions. [2023-11-29 04:50:28,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.63636363636363) internal successors, (436), 11 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:28,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:50:28,728 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:50:28,728 INFO L175 Difference]: Start difference. First operand has 186 places, 385 transitions, 4851 flow. Second operand 11 states and 436 transitions. [2023-11-29 04:50:28,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 617 transitions, 7298 flow [2023-11-29 04:50:31,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 617 transitions, 7099 flow, removed 91 selfloop flow, removed 2 redundant places. [2023-11-29 04:50:31,821 INFO L231 Difference]: Finished difference. Result has 198 places, 396 transitions, 4851 flow [2023-11-29 04:50:31,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=4686, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4851, PETRI_PLACES=198, PETRI_TRANSITIONS=396} [2023-11-29 04:50:31,822 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 132 predicate places. [2023-11-29 04:50:31,823 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 396 transitions, 4851 flow [2023-11-29 04:50:31,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:31,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:31,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:31,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 04:50:31,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:50:31,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:31,824 INFO L85 PathProgramCache]: Analyzing trace with hash 978198189, now seen corresponding path program 13 times [2023-11-29 04:50:31,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:31,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903750144] [2023-11-29 04:50:31,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:31,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:32,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:32,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903750144] [2023-11-29 04:50:32,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903750144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:32,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:32,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:50:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256084651] [2023-11-29 04:50:32,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:32,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:50:32,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:50:32,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:50:32,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2023-11-29 04:50:32,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 396 transitions, 4851 flow. Second operand has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:32,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:32,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2023-11-29 04:50:32,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:42,374 INFO L124 PetriNetUnfolderBase]: 32202/56828 cut-off events. [2023-11-29 04:50:42,374 INFO L125 PetriNetUnfolderBase]: For 349417/351804 co-relation queries the response was YES. [2023-11-29 04:50:42,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246056 conditions, 56828 events. 32202/56828 cut-off events. For 349417/351804 co-relation queries the response was YES. Maximal size of possible extension queue 1505. Compared 509104 event pairs, 7618 based on Foata normal form. 850/56448 useless extension candidates. Maximal degree in co-relation 244289. Up to 14193 conditions per place. [2023-11-29 04:50:43,214 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 294 selfloop transitions, 224 changer transitions 4/610 dead transitions. [2023-11-29 04:50:43,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 610 transitions, 7853 flow [2023-11-29 04:50:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:50:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:50:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 427 transitions. [2023-11-29 04:50:43,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.646969696969697 [2023-11-29 04:50:43,216 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 427 transitions. [2023-11-29 04:50:43,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 427 transitions. [2023-11-29 04:50:43,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:50:43,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 427 transitions. [2023-11-29 04:50:43,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.81818181818182) internal successors, (427), 11 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:43,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:50:43,219 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:50:43,219 INFO L175 Difference]: Start difference. First operand has 198 places, 396 transitions, 4851 flow. Second operand 11 states and 427 transitions. [2023-11-29 04:50:43,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 610 transitions, 7853 flow [2023-11-29 04:50:45,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 610 transitions, 7824 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-29 04:50:45,251 INFO L231 Difference]: Finished difference. Result has 214 places, 457 transitions, 6616 flow [2023-11-29 04:50:45,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=4491, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6616, PETRI_PLACES=214, PETRI_TRANSITIONS=457} [2023-11-29 04:50:45,252 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 148 predicate places. [2023-11-29 04:50:45,252 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 457 transitions, 6616 flow [2023-11-29 04:50:45,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.75) internal successors, (206), 8 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:45,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:50:45,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:50:45,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 04:50:45,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:50:45,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:50:45,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1765250317, now seen corresponding path program 14 times [2023-11-29 04:50:45,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:50:45,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836475958] [2023-11-29 04:50:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:50:45,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:50:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:50:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:50:45,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:50:45,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836475958] [2023-11-29 04:50:45,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836475958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:50:45,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:50:45,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:50:45,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876901285] [2023-11-29 04:50:45,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:50:45,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:50:45,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:50:45,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:50:45,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:50:45,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2023-11-29 04:50:45,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 457 transitions, 6616 flow. Second operand has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:50:45,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:50:45,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2023-11-29 04:50:45,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:50:59,641 INFO L124 PetriNetUnfolderBase]: 41025/68953 cut-off events. [2023-11-29 04:50:59,641 INFO L125 PetriNetUnfolderBase]: For 498867/500717 co-relation queries the response was YES. [2023-11-29 04:51:00,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307187 conditions, 68953 events. 41025/68953 cut-off events. For 498867/500717 co-relation queries the response was YES. Maximal size of possible extension queue 1716. Compared 600344 event pairs, 18100 based on Foata normal form. 757/67513 useless extension candidates. Maximal degree in co-relation 305803. Up to 21342 conditions per place. [2023-11-29 04:51:00,789 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 412 selfloop transitions, 31 changer transitions 20/677 dead transitions. [2023-11-29 04:51:00,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 677 transitions, 9289 flow [2023-11-29 04:51:00,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:51:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:51:00,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 432 transitions. [2023-11-29 04:51:00,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2023-11-29 04:51:00,791 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 432 transitions. [2023-11-29 04:51:00,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 432 transitions. [2023-11-29 04:51:00,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:00,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 432 transitions. [2023-11-29 04:51:00,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.27272727272727) internal successors, (432), 11 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:00,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:51:00,793 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:51:00,793 INFO L175 Difference]: Start difference. First operand has 214 places, 457 transitions, 6616 flow. Second operand 11 states and 432 transitions. [2023-11-29 04:51:00,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 677 transitions, 9289 flow [2023-11-29 04:51:05,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 677 transitions, 9212 flow, removed 38 selfloop flow, removed 1 redundant places. [2023-11-29 04:51:05,251 INFO L231 Difference]: Finished difference. Result has 228 places, 461 transitions, 6614 flow [2023-11-29 04:51:05,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=6567, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6614, PETRI_PLACES=228, PETRI_TRANSITIONS=461} [2023-11-29 04:51:05,252 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 162 predicate places. [2023-11-29 04:51:05,252 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 461 transitions, 6614 flow [2023-11-29 04:51:05,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.11111111111111) internal successors, (235), 9 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:05,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:05,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:05,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 04:51:05,253 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:51:05,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1633824507, now seen corresponding path program 15 times [2023-11-29 04:51:05,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:05,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487729521] [2023-11-29 04:51:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:05,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:05,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487729521] [2023-11-29 04:51:05,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487729521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:05,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:05,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:51:05,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829382741] [2023-11-29 04:51:05,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:05,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:51:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:05,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:51:05,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:51:05,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-29 04:51:05,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 461 transitions, 6614 flow. Second operand has 9 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:05,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:05,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-29 04:51:05,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:22,638 INFO L124 PetriNetUnfolderBase]: 47020/82464 cut-off events. [2023-11-29 04:51:22,638 INFO L125 PetriNetUnfolderBase]: For 685493/689310 co-relation queries the response was YES. [2023-11-29 04:51:23,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389063 conditions, 82464 events. 47020/82464 cut-off events. For 685493/689310 co-relation queries the response was YES. Maximal size of possible extension queue 2033. Compared 766819 event pairs, 18687 based on Foata normal form. 941/81846 useless extension candidates. Maximal degree in co-relation 386750. Up to 54762 conditions per place. [2023-11-29 04:51:23,953 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 476 selfloop transitions, 175 changer transitions 24/745 dead transitions. [2023-11-29 04:51:23,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 745 transitions, 11141 flow [2023-11-29 04:51:23,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:51:23,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 04:51:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 382 transitions. [2023-11-29 04:51:23,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2023-11-29 04:51:23,955 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 382 transitions. [2023-11-29 04:51:23,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 382 transitions. [2023-11-29 04:51:23,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:23,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 382 transitions. [2023-11-29 04:51:23,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 38.2) internal successors, (382), 10 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:23,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 60.0) internal successors, (660), 11 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:23,957 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 60.0) internal successors, (660), 11 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:23,957 INFO L175 Difference]: Start difference. First operand has 228 places, 461 transitions, 6614 flow. Second operand 10 states and 382 transitions. [2023-11-29 04:51:23,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 745 transitions, 11141 flow [2023-11-29 04:51:30,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 745 transitions, 11084 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-29 04:51:30,579 INFO L231 Difference]: Finished difference. Result has 242 places, 562 transitions, 8618 flow [2023-11-29 04:51:30,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=6569, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8618, PETRI_PLACES=242, PETRI_TRANSITIONS=562} [2023-11-29 04:51:30,580 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 176 predicate places. [2023-11-29 04:51:30,581 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 562 transitions, 8618 flow [2023-11-29 04:51:30,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:30,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:30,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:30,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 04:51:30,581 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:51:30,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:30,581 INFO L85 PathProgramCache]: Analyzing trace with hash -305868649, now seen corresponding path program 16 times [2023-11-29 04:51:30,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722776038] [2023-11-29 04:51:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:30,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722776038] [2023-11-29 04:51:30,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722776038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:30,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:30,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:51:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246539057] [2023-11-29 04:51:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:30,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:51:30,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:30,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:51:30,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:51:30,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-29 04:51:30,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 562 transitions, 8618 flow. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:30,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:30,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-29 04:51:30,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:51:48,641 INFO L124 PetriNetUnfolderBase]: 44674/78190 cut-off events. [2023-11-29 04:51:48,641 INFO L125 PetriNetUnfolderBase]: For 788068/793538 co-relation queries the response was YES. [2023-11-29 04:51:49,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391274 conditions, 78190 events. 44674/78190 cut-off events. For 788068/793538 co-relation queries the response was YES. Maximal size of possible extension queue 1814. Compared 720036 event pairs, 19606 based on Foata normal form. 1025/77542 useless extension candidates. Maximal degree in co-relation 390767. Up to 58693 conditions per place. [2023-11-29 04:51:49,952 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 398 selfloop transitions, 131 changer transitions 14/613 dead transitions. [2023-11-29 04:51:49,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 613 transitions, 10042 flow [2023-11-29 04:51:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:51:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 04:51:49,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2023-11-29 04:51:49,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976190476190476 [2023-11-29 04:51:49,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 251 transitions. [2023-11-29 04:51:49,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 251 transitions. [2023-11-29 04:51:49,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:51:49,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 251 transitions. [2023-11-29 04:51:49,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.857142857142854) internal successors, (251), 7 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:49,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:49,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:49,956 INFO L175 Difference]: Start difference. First operand has 242 places, 562 transitions, 8618 flow. Second operand 7 states and 251 transitions. [2023-11-29 04:51:49,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 613 transitions, 10042 flow [2023-11-29 04:51:56,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 613 transitions, 9834 flow, removed 104 selfloop flow, removed 0 redundant places. [2023-11-29 04:51:56,642 INFO L231 Difference]: Finished difference. Result has 250 places, 527 transitions, 8328 flow [2023-11-29 04:51:56,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=7864, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8328, PETRI_PLACES=250, PETRI_TRANSITIONS=527} [2023-11-29 04:51:56,642 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 184 predicate places. [2023-11-29 04:51:56,643 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 527 transitions, 8328 flow [2023-11-29 04:51:56,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:56,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:51:56,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:51:56,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 04:51:56,643 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:51:56,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:51:56,643 INFO L85 PathProgramCache]: Analyzing trace with hash 83162699, now seen corresponding path program 17 times [2023-11-29 04:51:56,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:51:56,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896283336] [2023-11-29 04:51:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:51:56,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:51:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:51:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:51:57,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:51:57,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896283336] [2023-11-29 04:51:57,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896283336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:51:57,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:51:57,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:51:57,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415989439] [2023-11-29 04:51:57,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:51:57,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:51:57,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:51:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:51:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:51:57,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2023-11-29 04:51:57,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 527 transitions, 8328 flow. Second operand has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:51:57,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:51:57,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2023-11-29 04:51:57,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:14,761 INFO L124 PetriNetUnfolderBase]: 43317/76225 cut-off events. [2023-11-29 04:52:14,761 INFO L125 PetriNetUnfolderBase]: For 788064/792384 co-relation queries the response was YES. [2023-11-29 04:52:15,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385351 conditions, 76225 events. 43317/76225 cut-off events. For 788064/792384 co-relation queries the response was YES. Maximal size of possible extension queue 1806. Compared 706552 event pairs, 18140 based on Foata normal form. 794/75427 useless extension candidates. Maximal degree in co-relation 385163. Up to 55144 conditions per place. [2023-11-29 04:52:16,066 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 449 selfloop transitions, 111 changer transitions 22/656 dead transitions. [2023-11-29 04:52:16,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 656 transitions, 11019 flow [2023-11-29 04:52:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:52:16,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 04:52:16,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 305 transitions. [2023-11-29 04:52:16,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2023-11-29 04:52:16,067 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 305 transitions. [2023-11-29 04:52:16,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 305 transitions. [2023-11-29 04:52:16,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:16,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 305 transitions. [2023-11-29 04:52:16,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 38.125) internal successors, (305), 8 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:16,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:16,069 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 60.0) internal successors, (540), 9 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:16,069 INFO L175 Difference]: Start difference. First operand has 250 places, 527 transitions, 8328 flow. Second operand 8 states and 305 transitions. [2023-11-29 04:52:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 656 transitions, 11019 flow [2023-11-29 04:52:23,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 656 transitions, 10861 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-11-29 04:52:23,017 INFO L231 Difference]: Finished difference. Result has 250 places, 521 transitions, 8477 flow [2023-11-29 04:52:23,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=8103, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8477, PETRI_PLACES=250, PETRI_TRANSITIONS=521} [2023-11-29 04:52:23,017 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 184 predicate places. [2023-11-29 04:52:23,018 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 521 transitions, 8477 flow [2023-11-29 04:52:23,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:23,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:23,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:23,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 04:52:23,018 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:52:23,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1274975115, now seen corresponding path program 18 times [2023-11-29 04:52:23,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:23,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421505650] [2023-11-29 04:52:23,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:23,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421505650] [2023-11-29 04:52:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421505650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:52:23,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692118701] [2023-11-29 04:52:23,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:52:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:52:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:52:23,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-29 04:52:23,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 521 transitions, 8477 flow. Second operand has 9 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:23,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:23,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-29 04:52:23,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:52:41,141 INFO L124 PetriNetUnfolderBase]: 43926/78047 cut-off events. [2023-11-29 04:52:41,141 INFO L125 PetriNetUnfolderBase]: For 821939/825386 co-relation queries the response was YES. [2023-11-29 04:52:42,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393219 conditions, 78047 events. 43926/78047 cut-off events. For 821939/825386 co-relation queries the response was YES. Maximal size of possible extension queue 1971. Compared 729713 event pairs, 15402 based on Foata normal form. 1323/78516 useless extension candidates. Maximal degree in co-relation 391059. Up to 38392 conditions per place. [2023-11-29 04:52:42,501 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 450 selfloop transitions, 198 changer transitions 76/794 dead transitions. [2023-11-29 04:52:42,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 794 transitions, 13172 flow [2023-11-29 04:52:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:52:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:52:42,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 423 transitions. [2023-11-29 04:52:42,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6409090909090909 [2023-11-29 04:52:42,503 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 423 transitions. [2023-11-29 04:52:42,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 423 transitions. [2023-11-29 04:52:42,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:52:42,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 423 transitions. [2023-11-29 04:52:42,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.45454545454545) internal successors, (423), 11 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:42,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:52:42,505 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:52:42,505 INFO L175 Difference]: Start difference. First operand has 250 places, 521 transitions, 8477 flow. Second operand 11 states and 423 transitions. [2023-11-29 04:52:42,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 794 transitions, 13172 flow [2023-11-29 04:52:50,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 794 transitions, 13056 flow, removed 50 selfloop flow, removed 1 redundant places. [2023-11-29 04:52:50,523 INFO L231 Difference]: Finished difference. Result has 265 places, 542 transitions, 9242 flow [2023-11-29 04:52:50,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=8393, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9242, PETRI_PLACES=265, PETRI_TRANSITIONS=542} [2023-11-29 04:52:50,524 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 199 predicate places. [2023-11-29 04:52:50,524 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 542 transitions, 9242 flow [2023-11-29 04:52:50,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:50,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:52:50,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:52:50,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 04:52:50,524 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:52:50,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:52:50,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1902816125, now seen corresponding path program 19 times [2023-11-29 04:52:50,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:52:50,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242490119] [2023-11-29 04:52:50,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:52:50,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:52:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:52:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:52:50,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:52:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242490119] [2023-11-29 04:52:50,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242490119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:52:50,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:52:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:52:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234795083] [2023-11-29 04:52:50,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:52:50,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:52:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:52:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:52:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:52:50,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-29 04:52:50,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 542 transitions, 9242 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:52:50,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:52:50,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-29 04:52:50,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:07,733 INFO L124 PetriNetUnfolderBase]: 39569/69282 cut-off events. [2023-11-29 04:53:07,734 INFO L125 PetriNetUnfolderBase]: For 846543/849934 co-relation queries the response was YES. [2023-11-29 04:53:08,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370992 conditions, 69282 events. 39569/69282 cut-off events. For 846543/849934 co-relation queries the response was YES. Maximal size of possible extension queue 1861. Compared 634546 event pairs, 14827 based on Foata normal form. 1037/69315 useless extension candidates. Maximal degree in co-relation 370009. Up to 21622 conditions per place. [2023-11-29 04:53:08,932 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 485 selfloop transitions, 177 changer transitions 40/755 dead transitions. [2023-11-29 04:53:08,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 755 transitions, 13214 flow [2023-11-29 04:53:08,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:53:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 04:53:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 372 transitions. [2023-11-29 04:53:08,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2023-11-29 04:53:08,933 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 372 transitions. [2023-11-29 04:53:08,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 372 transitions. [2023-11-29 04:53:08,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:08,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 372 transitions. [2023-11-29 04:53:08,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 41.333333333333336) internal successors, (372), 9 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:08,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 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) [2023-11-29 04:53:08,935 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 60.0) internal successors, (600), 10 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) [2023-11-29 04:53:08,935 INFO L175 Difference]: Start difference. First operand has 265 places, 542 transitions, 9242 flow. Second operand 9 states and 372 transitions. [2023-11-29 04:53:08,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 755 transitions, 13214 flow [2023-11-29 04:53:16,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 755 transitions, 12986 flow, removed 91 selfloop flow, removed 6 redundant places. [2023-11-29 04:53:16,731 INFO L231 Difference]: Finished difference. Result has 273 places, 558 transitions, 10211 flow [2023-11-29 04:53:16,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=8868, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10211, PETRI_PLACES=273, PETRI_TRANSITIONS=558} [2023-11-29 04:53:16,731 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 207 predicate places. [2023-11-29 04:53:16,732 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 558 transitions, 10211 flow [2023-11-29 04:53:16,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:16,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:16,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:16,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 04:53:16,732 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:53:16,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1360590419, now seen corresponding path program 20 times [2023-11-29 04:53:16,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:16,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096043655] [2023-11-29 04:53:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:16,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:17,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:17,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:17,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096043655] [2023-11-29 04:53:17,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096043655] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:17,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:17,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 04:53:17,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073668968] [2023-11-29 04:53:17,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:17,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 04:53:17,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 04:53:17,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:53:17,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2023-11-29 04:53:17,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 558 transitions, 10211 flow. Second operand has 11 states, 11 states have (on average 23.545454545454547) internal successors, (259), 11 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:17,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:17,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2023-11-29 04:53:17,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:53:34,947 INFO L124 PetriNetUnfolderBase]: 38156/67269 cut-off events. [2023-11-29 04:53:34,947 INFO L125 PetriNetUnfolderBase]: For 923470/926510 co-relation queries the response was YES. [2023-11-29 04:53:36,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372186 conditions, 67269 events. 38156/67269 cut-off events. For 923470/926510 co-relation queries the response was YES. Maximal size of possible extension queue 1877. Compared 622203 event pairs, 14128 based on Foata normal form. 796/66939 useless extension candidates. Maximal degree in co-relation 371023. Up to 23426 conditions per place. [2023-11-29 04:53:36,383 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 454 selfloop transitions, 199 changer transitions 30/742 dead transitions. [2023-11-29 04:53:36,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 742 transitions, 14042 flow [2023-11-29 04:53:36,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 04:53:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 04:53:36,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 388 transitions. [2023-11-29 04:53:36,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5878787878787879 [2023-11-29 04:53:36,385 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 388 transitions. [2023-11-29 04:53:36,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 388 transitions. [2023-11-29 04:53:36,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:53:36,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 388 transitions. [2023-11-29 04:53:36,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 35.27272727272727) internal successors, (388), 11 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:36,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:53:36,387 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 60.0) internal successors, (720), 12 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) [2023-11-29 04:53:36,387 INFO L175 Difference]: Start difference. First operand has 273 places, 558 transitions, 10211 flow. Second operand 11 states and 388 transitions. [2023-11-29 04:53:36,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 742 transitions, 14042 flow [2023-11-29 04:53:45,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 742 transitions, 13772 flow, removed 122 selfloop flow, removed 2 redundant places. [2023-11-29 04:53:45,221 INFO L231 Difference]: Finished difference. Result has 284 places, 574 transitions, 11038 flow [2023-11-29 04:53:45,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=10027, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11038, PETRI_PLACES=284, PETRI_TRANSITIONS=574} [2023-11-29 04:53:45,222 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 218 predicate places. [2023-11-29 04:53:45,222 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 574 transitions, 11038 flow [2023-11-29 04:53:45,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.545454545454547) internal successors, (259), 11 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:45,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:53:45,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:53:45,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 04:53:45,222 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:53:45,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:53:45,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1328393019, now seen corresponding path program 21 times [2023-11-29 04:53:45,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:53:45,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997724577] [2023-11-29 04:53:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:53:45,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:53:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:53:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:53:45,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:53:45,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997724577] [2023-11-29 04:53:45,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997724577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:53:45,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:53:45,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 04:53:45,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350201512] [2023-11-29 04:53:45,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:53:45,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:53:45,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:53:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:53:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:53:45,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2023-11-29 04:53:45,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 574 transitions, 11038 flow. Second operand has 13 states, 13 states have (on average 22.076923076923077) internal successors, (287), 13 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:53:45,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:53:45,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2023-11-29 04:53:45,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:04,641 INFO L124 PetriNetUnfolderBase]: 40011/70738 cut-off events. [2023-11-29 04:54:04,641 INFO L125 PetriNetUnfolderBase]: For 1008712/1012537 co-relation queries the response was YES. [2023-11-29 04:54:05,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395895 conditions, 70738 events. 40011/70738 cut-off events. For 1008712/1012537 co-relation queries the response was YES. Maximal size of possible extension queue 2001. Compared 657136 event pairs, 17188 based on Foata normal form. 769/70461 useless extension candidates. Maximal degree in co-relation 394672. Up to 49791 conditions per place. [2023-11-29 04:54:05,955 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 491 selfloop transitions, 148 changer transitions 76/768 dead transitions. [2023-11-29 04:54:05,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 768 transitions, 14756 flow [2023-11-29 04:54:05,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:54:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-29 04:54:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 515 transitions. [2023-11-29 04:54:05,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2023-11-29 04:54:05,957 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 515 transitions. [2023-11-29 04:54:05,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 515 transitions. [2023-11-29 04:54:05,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:05,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 515 transitions. [2023-11-29 04:54:05,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 32.1875) internal successors, (515), 16 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:05,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 60.0) internal successors, (1020), 17 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:05,959 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 60.0) internal successors, (1020), 17 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:05,960 INFO L175 Difference]: Start difference. First operand has 284 places, 574 transitions, 11038 flow. Second operand 16 states and 515 transitions. [2023-11-29 04:54:05,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 768 transitions, 14756 flow [2023-11-29 04:54:16,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 768 transitions, 14645 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-11-29 04:54:16,362 INFO L231 Difference]: Finished difference. Result has 304 places, 586 transitions, 11798 flow [2023-11-29 04:54:16,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=10939, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11798, PETRI_PLACES=304, PETRI_TRANSITIONS=586} [2023-11-29 04:54:16,363 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 238 predicate places. [2023-11-29 04:54:16,363 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 586 transitions, 11798 flow [2023-11-29 04:54:16,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.076923076923077) internal successors, (287), 13 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:16,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:16,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:16,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 04:54:16,363 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:54:16,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:16,364 INFO L85 PathProgramCache]: Analyzing trace with hash 85245713, now seen corresponding path program 22 times [2023-11-29 04:54:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:16,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233923094] [2023-11-29 04:54:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:16,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:16,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:16,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233923094] [2023-11-29 04:54:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233923094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:16,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:54:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221391889] [2023-11-29 04:54:16,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:16,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:54:16,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:54:16,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:54:16,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2023-11-29 04:54:16,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 586 transitions, 11798 flow. Second operand has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:16,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:16,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2023-11-29 04:54:16,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 04:54:37,019 INFO L124 PetriNetUnfolderBase]: 41169/73025 cut-off events. [2023-11-29 04:54:37,019 INFO L125 PetriNetUnfolderBase]: For 1117891/1121488 co-relation queries the response was YES. [2023-11-29 04:54:38,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422101 conditions, 73025 events. 41169/73025 cut-off events. For 1117891/1121488 co-relation queries the response was YES. Maximal size of possible extension queue 2302. Compared 690304 event pairs, 10347 based on Foata normal form. 1291/73240 useless extension candidates. Maximal degree in co-relation 421771. Up to 24835 conditions per place. [2023-11-29 04:54:38,646 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 458 selfloop transitions, 283 changer transitions 71/871 dead transitions. [2023-11-29 04:54:38,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 871 transitions, 17610 flow [2023-11-29 04:54:38,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:54:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 04:54:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 462 transitions. [2023-11-29 04:54:38,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2023-11-29 04:54:38,648 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 462 transitions. [2023-11-29 04:54:38,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 462 transitions. [2023-11-29 04:54:38,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:54:38,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 462 transitions. [2023-11-29 04:54:38,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 38.5) internal successors, (462), 12 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:38,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:38,650 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 60.0) internal successors, (780), 13 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:38,650 INFO L175 Difference]: Start difference. First operand has 304 places, 586 transitions, 11798 flow. Second operand 12 states and 462 transitions. [2023-11-29 04:54:38,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 871 transitions, 17610 flow [2023-11-29 04:54:52,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 871 transitions, 17169 flow, removed 129 selfloop flow, removed 9 redundant places. [2023-11-29 04:54:52,843 INFO L231 Difference]: Finished difference. Result has 313 places, 611 transitions, 13075 flow [2023-11-29 04:54:52,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=11400, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13075, PETRI_PLACES=313, PETRI_TRANSITIONS=611} [2023-11-29 04:54:52,844 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 247 predicate places. [2023-11-29 04:54:52,844 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 611 transitions, 13075 flow [2023-11-29 04:54:52,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:52,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 04:54:52,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:54:52,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 04:54:52,844 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 04:54:52,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:54:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2128055485, now seen corresponding path program 23 times [2023-11-29 04:54:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:54:52,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781482564] [2023-11-29 04:54:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:54:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:54:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:54:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:54:53,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:54:53,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781482564] [2023-11-29 04:54:53,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781482564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:54:53,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:54:53,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 04:54:53,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444626381] [2023-11-29 04:54:53,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:54:53,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:54:53,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:54:53,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:54:53,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:54:53,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2023-11-29 04:54:53,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 611 transitions, 13075 flow. Second operand has 10 states, 10 states have (on average 23.9) internal successors, (239), 10 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:54:53,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 04:54:53,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2023-11-29 04:54:53,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand