./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:44:19,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:44:19,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:44:19,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:44:19,440 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:44:19,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:44:19,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:44:19,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:44:19,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:44:19,488 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:44:19,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:44:19,490 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:44:19,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:44:19,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:44:19,494 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:44:19,494 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:44:19,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:44:19,495 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:44:19,495 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:44:19,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:44:19,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:44:19,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:44:19,497 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:44:19,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:44:19,498 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:44:19,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:44:19,499 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:44:19,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:44:19,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:44:19,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:44:19,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:44:19,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:19,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:44:19,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:44:19,504 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:44:19,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:44:19,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:44:19,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:44:19,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:44:19,505 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:44:19,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:44:19,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:44:19,506 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_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e0bd33ffca0122f84e298c52bb9fdae01e72661c94f68aaa49ed0f187d88b87 [2023-11-24 21:44:19,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:44:19,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:44:19,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:44:19,840 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:44:19,840 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:44:19,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:44:23,067 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:44:23,657 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:44:23,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:44:23,693 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/data/20255397e/b1ea42e1745846c29330266bca9f6ba3/FLAG81e0fdb5a [2023-11-24 21:44:23,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/data/20255397e/b1ea42e1745846c29330266bca9f6ba3 [2023-11-24 21:44:23,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:44:23,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:44:23,727 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:23,728 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:44:23,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:44:23,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:23" (1/1) ... [2023-11-24 21:44:23,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17ae360d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:23, skipping insertion in model container [2023-11-24 21:44:23,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:44:23" (1/1) ... [2023-11-24 21:44:23,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:44:24,118 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_5d400fcc-02a6-44c2-8257-625c892d31d1/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-24 21:44:24,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:24,470 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:44:24,487 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_5d400fcc-02a6-44c2-8257-625c892d31d1/sv-benchmarks/c/pthread-wmm/safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2023-11-24 21:44:24,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:44:24,614 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:44:24,614 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:44:24,624 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:44:24,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24 WrapperNode [2023-11-24 21:44:24,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:44:24,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:24,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:44:24,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:44:24,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,732 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 143 [2023-11-24 21:44:24,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:44:24,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:44:24,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:44:24,735 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:44:24,750 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,756 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,791 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-24 21:44:24,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:44:24,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:44:24,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:44:24,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:44:24,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (1/1) ... [2023-11-24 21:44:24,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:44:24,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:44:24,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:44:24,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d400fcc-02a6-44c2-8257-625c892d31d1/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:44:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:44:24,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:44:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:44:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:44:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:44:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:44:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:44:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:44:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:44:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:44:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:44:24,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:44:24,937 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:44:24,937 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:44:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:44:24,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:44:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:44:24,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:44:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:44:24,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:44:24,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:44:24,942 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:44:25,202 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:44:25,205 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:44:25,752 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:44:26,096 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:44:26,096 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:44:26,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:26 BoogieIcfgContainer [2023-11-24 21:44:26,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:44:26,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:44:26,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:44:26,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:44:26,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:44:23" (1/3) ... [2023-11-24 21:44:26,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e53a3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:26, skipping insertion in model container [2023-11-24 21:44:26,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:44:24" (2/3) ... [2023-11-24 21:44:26,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e53a3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:44:26, skipping insertion in model container [2023-11-24 21:44:26,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:44:26" (3/3) ... [2023-11-24 21:44:26,108 INFO L112 eAbstractionObserver]: Analyzing ICFG safe032_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-24 21:44:26,119 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-24 21:44:26,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:44:26,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:44:26,133 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:44:26,192 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:44:26,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 41 transitions, 94 flow [2023-11-24 21:44:26,286 INFO L124 PetriNetUnfolderBase]: 1/38 cut-off events. [2023-11-24 21:44:26,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:44:26,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 38 events. 1/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-24 21:44:26,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 41 transitions, 94 flow [2023-11-24 21:44:26,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 38 transitions, 85 flow [2023-11-24 21:44:26,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:44:26,328 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;@3da76600, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:44:26,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-24 21:44:26,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:44:26,339 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-11-24 21:44:26,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:44:26,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:26,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:26,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:26,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:26,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2121823724, now seen corresponding path program 1 times [2023-11-24 21:44:26,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:26,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684553444] [2023-11-24 21:44:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:26,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:26,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684553444] [2023-11-24 21:44:26,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684553444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:26,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:26,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:44:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155356553] [2023-11-24 21:44:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:26,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:44:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:27,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:44:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:44:27,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 41 [2023-11-24 21:44:27,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:27,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:27,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 41 [2023-11-24 21:44:27,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:27,833 INFO L124 PetriNetUnfolderBase]: 920/1670 cut-off events. [2023-11-24 21:44:27,833 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:44:27,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1670 events. 920/1670 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10829 event pairs, 188 based on Foata normal form. 60/1698 useless extension candidates. Maximal degree in co-relation 3079. Up to 1048 conditions per place. [2023-11-24 21:44:27,857 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 29 selfloop transitions, 2 changer transitions 2/48 dead transitions. [2023-11-24 21:44:27,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 171 flow [2023-11-24 21:44:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:44:27,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:44:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2023-11-24 21:44:27,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7317073170731707 [2023-11-24 21:44:27,874 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 90 transitions. [2023-11-24 21:44:27,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 90 transitions. [2023-11-24 21:44:27,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:27,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 90 transitions. [2023-11-24 21:44:27,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:27,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:27,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:27,889 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 85 flow. Second operand 3 states and 90 transitions. [2023-11-24 21:44:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 171 flow [2023-11-24 21:44:27,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:44:27,897 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 80 flow [2023-11-24 21:44:27,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-11-24 21:44:27,904 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2023-11-24 21:44:27,905 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 80 flow [2023-11-24 21:44:27,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:27,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:27,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:27,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:44:27,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:27,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash -443078926, now seen corresponding path program 1 times [2023-11-24 21:44:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:27,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996291808] [2023-11-24 21:44:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:28,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:28,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996291808] [2023-11-24 21:44:28,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996291808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:28,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:28,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:44:28,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232257152] [2023-11-24 21:44:28,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:28,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:44:28,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:44:28,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:44:28,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-24 21:44:28,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:28,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:28,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-24 21:44:28,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:30,280 INFO L124 PetriNetUnfolderBase]: 2381/3758 cut-off events. [2023-11-24 21:44:30,280 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-11-24 21:44:30,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 3758 events. 2381/3758 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 23675 event pairs, 435 based on Foata normal form. 0/3670 useless extension candidates. Maximal degree in co-relation 7492. Up to 1520 conditions per place. [2023-11-24 21:44:30,308 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 38 selfloop transitions, 8 changer transitions 73/130 dead transitions. [2023-11-24 21:44:30,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 130 transitions, 522 flow [2023-11-24 21:44:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:44:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:44:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 290 transitions. [2023-11-24 21:44:30,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894308943089431 [2023-11-24 21:44:30,314 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 290 transitions. [2023-11-24 21:44:30,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 290 transitions. [2023-11-24 21:44:30,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:30,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 290 transitions. [2023-11-24 21:44:30,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 24.166666666666668) internal successors, (290), 12 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:30,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:30,321 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:30,321 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 80 flow. Second operand 12 states and 290 transitions. [2023-11-24 21:44:30,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 130 transitions, 522 flow [2023-11-24 21:44:30,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 130 transitions, 506 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:30,328 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 176 flow [2023-11-24 21:44:30,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2023-11-24 21:44:30,329 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2023-11-24 21:44:30,329 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 176 flow [2023-11-24 21:44:30,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:30,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:30,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:44:30,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:30,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:30,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1356133776, now seen corresponding path program 1 times [2023-11-24 21:44:30,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252149503] [2023-11-24 21:44:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:30,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:30,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:30,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252149503] [2023-11-24 21:44:30,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252149503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:30,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:30,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:44:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766730239] [2023-11-24 21:44:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:30,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:30,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-24 21:44:30,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:30,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:30,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-24 21:44:30,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:31,480 INFO L124 PetriNetUnfolderBase]: 1671/2821 cut-off events. [2023-11-24 21:44:31,481 INFO L125 PetriNetUnfolderBase]: For 6474/6474 co-relation queries the response was YES. [2023-11-24 21:44:31,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9764 conditions, 2821 events. 1671/2821 cut-off events. For 6474/6474 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 17626 event pairs, 751 based on Foata normal form. 71/2860 useless extension candidates. Maximal degree in co-relation 9743. Up to 2001 conditions per place. [2023-11-24 21:44:31,517 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 40 selfloop transitions, 4 changer transitions 39/94 dead transitions. [2023-11-24 21:44:31,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 94 transitions, 648 flow [2023-11-24 21:44:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:44:31,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:44:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2023-11-24 21:44:31,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2023-11-24 21:44:31,522 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 168 transitions. [2023-11-24 21:44:31,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 168 transitions. [2023-11-24 21:44:31,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:31,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 168 transitions. [2023-11-24 21:44:31,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:31,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 41.0) internal successors, (328), 8 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:31,528 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 41.0) internal successors, (328), 8 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:31,528 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 176 flow. Second operand 7 states and 168 transitions. [2023-11-24 21:44:31,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 94 transitions, 648 flow [2023-11-24 21:44:31,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 94 transitions, 589 flow, removed 28 selfloop flow, removed 5 redundant places. [2023-11-24 21:44:31,559 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 214 flow [2023-11-24 21:44:31,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2023-11-24 21:44:31,561 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2023-11-24 21:44:31,562 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 214 flow [2023-11-24 21:44:31,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:31,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:31,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:31,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:44:31,564 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:31,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1283087541, now seen corresponding path program 1 times [2023-11-24 21:44:31,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:31,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065346549] [2023-11-24 21:44:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:31,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:32,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065346549] [2023-11-24 21:44:32,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065346549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:32,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:32,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:44:32,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962089442] [2023-11-24 21:44:32,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:32,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:32,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:32,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:32,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:32,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:32,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:32,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:32,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:33,286 INFO L124 PetriNetUnfolderBase]: 1559/2694 cut-off events. [2023-11-24 21:44:33,287 INFO L125 PetriNetUnfolderBase]: For 5497/5703 co-relation queries the response was YES. [2023-11-24 21:44:33,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8960 conditions, 2694 events. 1559/2694 cut-off events. For 5497/5703 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 17091 event pairs, 295 based on Foata normal form. 61/2702 useless extension candidates. Maximal degree in co-relation 8937. Up to 1524 conditions per place. [2023-11-24 21:44:33,323 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 47 selfloop transitions, 13 changer transitions 31/108 dead transitions. [2023-11-24 21:44:33,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 691 flow [2023-11-24 21:44:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:44:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:44:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2023-11-24 21:44:33,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5907859078590786 [2023-11-24 21:44:33,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 218 transitions. [2023-11-24 21:44:33,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 218 transitions. [2023-11-24 21:44:33,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:33,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 218 transitions. [2023-11-24 21:44:33,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 24.22222222222222) internal successors, (218), 9 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:33,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:33,329 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:33,329 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 214 flow. Second operand 9 states and 218 transitions. [2023-11-24 21:44:33,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 691 flow [2023-11-24 21:44:33,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 667 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-24 21:44:33,344 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 319 flow [2023-11-24 21:44:33,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=319, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2023-11-24 21:44:33,345 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2023-11-24 21:44:33,345 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 319 flow [2023-11-24 21:44:33,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:33,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:33,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:33,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:44:33,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:33,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash -150829015, now seen corresponding path program 2 times [2023-11-24 21:44:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:33,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216295250] [2023-11-24 21:44:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:33,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:34,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:34,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216295250] [2023-11-24 21:44:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216295250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:34,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:34,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:44:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602585816] [2023-11-24 21:44:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:34,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:44:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:44:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:44:34,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:34,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 319 flow. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:34,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:34,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:34,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:36,121 INFO L124 PetriNetUnfolderBase]: 1981/3358 cut-off events. [2023-11-24 21:44:36,122 INFO L125 PetriNetUnfolderBase]: For 11274/11619 co-relation queries the response was YES. [2023-11-24 21:44:36,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13242 conditions, 3358 events. 1981/3358 cut-off events. For 11274/11619 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21910 event pairs, 241 based on Foata normal form. 93/3363 useless extension candidates. Maximal degree in co-relation 13215. Up to 1733 conditions per place. [2023-11-24 21:44:36,179 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 57 selfloop transitions, 21 changer transitions 56/151 dead transitions. [2023-11-24 21:44:36,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 151 transitions, 1195 flow [2023-11-24 21:44:36,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:44:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:44:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 302 transitions. [2023-11-24 21:44:36,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666041275797373 [2023-11-24 21:44:36,182 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 302 transitions. [2023-11-24 21:44:36,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 302 transitions. [2023-11-24 21:44:36,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:36,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 302 transitions. [2023-11-24 21:44:36,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 23.23076923076923) internal successors, (302), 13 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:36,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:36,186 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:36,186 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 319 flow. Second operand 13 states and 302 transitions. [2023-11-24 21:44:36,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 151 transitions, 1195 flow [2023-11-24 21:44:36,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 151 transitions, 1163 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-11-24 21:44:36,209 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 549 flow [2023-11-24 21:44:36,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=549, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2023-11-24 21:44:36,210 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2023-11-24 21:44:36,210 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 549 flow [2023-11-24 21:44:36,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 9 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:36,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:36,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:36,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:44:36,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:36,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:36,212 INFO L85 PathProgramCache]: Analyzing trace with hash 891394177, now seen corresponding path program 1 times [2023-11-24 21:44:36,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:36,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242444666] [2023-11-24 21:44:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:36,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:36,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:36,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242444666] [2023-11-24 21:44:36,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242444666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:36,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:36,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:44:36,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325262508] [2023-11-24 21:44:36,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:36,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:36,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:36,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:36,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:36,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-24 21:44:36,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 549 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:36,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:36,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-24 21:44:36,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:37,583 INFO L124 PetriNetUnfolderBase]: 2763/4718 cut-off events. [2023-11-24 21:44:37,584 INFO L125 PetriNetUnfolderBase]: For 31816/31851 co-relation queries the response was YES. [2023-11-24 21:44:37,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22632 conditions, 4718 events. 2763/4718 cut-off events. For 31816/31851 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32800 event pairs, 734 based on Foata normal form. 94/4757 useless extension candidates. Maximal degree in co-relation 22597. Up to 2170 conditions per place. [2023-11-24 21:44:37,642 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 65 selfloop transitions, 6 changer transitions 31/115 dead transitions. [2023-11-24 21:44:37,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 115 transitions, 1214 flow [2023-11-24 21:44:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:44:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:44:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2023-11-24 21:44:37,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578397212543554 [2023-11-24 21:44:37,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 166 transitions. [2023-11-24 21:44:37,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 166 transitions. [2023-11-24 21:44:37,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:37,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 166 transitions. [2023-11-24 21:44:37,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:37,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 41.0) internal successors, (328), 8 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:37,647 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 41.0) internal successors, (328), 8 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:37,647 INFO L175 Difference]: Start difference. First operand has 81 places, 68 transitions, 549 flow. Second operand 7 states and 166 transitions. [2023-11-24 21:44:37,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 115 transitions, 1214 flow [2023-11-24 21:44:37,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 115 transitions, 1104 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-11-24 21:44:37,705 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 524 flow [2023-11-24 21:44:37,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=524, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2023-11-24 21:44:37,707 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2023-11-24 21:44:37,707 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 524 flow [2023-11-24 21:44:37,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:37,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:37,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:37,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:44:37,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:37,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1033946934, now seen corresponding path program 1 times [2023-11-24 21:44:37,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:37,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841894481] [2023-11-24 21:44:37,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:37,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:38,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:38,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841894481] [2023-11-24 21:44:38,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841894481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:38,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:38,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:44:38,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366457974] [2023-11-24 21:44:38,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:38,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:44:38,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:38,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:44:38,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:44:38,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:38,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:38,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:38,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:38,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:39,516 INFO L124 PetriNetUnfolderBase]: 2331/4106 cut-off events. [2023-11-24 21:44:39,516 INFO L125 PetriNetUnfolderBase]: For 26593/27054 co-relation queries the response was YES. [2023-11-24 21:44:39,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18836 conditions, 4106 events. 2331/4106 cut-off events. For 26593/27054 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 28895 event pairs, 349 based on Foata normal form. 77/4060 useless extension candidates. Maximal degree in co-relation 18802. Up to 2646 conditions per place. [2023-11-24 21:44:39,566 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 56 selfloop transitions, 19 changer transitions 25/117 dead transitions. [2023-11-24 21:44:39,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 1112 flow [2023-11-24 21:44:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:44:39,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:44:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2023-11-24 21:44:39,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823170731707317 [2023-11-24 21:44:39,633 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 191 transitions. [2023-11-24 21:44:39,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 191 transitions. [2023-11-24 21:44:39,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:39,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 191 transitions. [2023-11-24 21:44:39,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:39,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:39,635 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:39,635 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 524 flow. Second operand 8 states and 191 transitions. [2023-11-24 21:44:39,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 1112 flow [2023-11-24 21:44:39,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 117 transitions, 1078 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-24 21:44:39,673 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 688 flow [2023-11-24 21:44:39,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-11-24 21:44:39,674 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2023-11-24 21:44:39,675 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 688 flow [2023-11-24 21:44:39,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:39,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:39,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:39,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:44:39,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:39,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:39,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1461163418, now seen corresponding path program 2 times [2023-11-24 21:44:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:39,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575618861] [2023-11-24 21:44:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:39,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575618861] [2023-11-24 21:44:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575618861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:40,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:44:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305251023] [2023-11-24 21:44:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:44:40,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:40,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:44:40,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:44:40,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:40,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 688 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:40,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:40,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:40,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:41,756 INFO L124 PetriNetUnfolderBase]: 2301/4090 cut-off events. [2023-11-24 21:44:41,756 INFO L125 PetriNetUnfolderBase]: For 30635/31112 co-relation queries the response was YES. [2023-11-24 21:44:41,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19711 conditions, 4090 events. 2301/4090 cut-off events. For 30635/31112 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 28742 event pairs, 498 based on Foata normal form. 94/4063 useless extension candidates. Maximal degree in co-relation 19674. Up to 2636 conditions per place. [2023-11-24 21:44:41,811 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 58 selfloop transitions, 16 changer transitions 25/116 dead transitions. [2023-11-24 21:44:41,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 1197 flow [2023-11-24 21:44:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:44:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:44:41,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2023-11-24 21:44:41,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-11-24 21:44:41,817 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 184 transitions. [2023-11-24 21:44:41,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 184 transitions. [2023-11-24 21:44:41,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:41,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 184 transitions. [2023-11-24 21:44:41,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:41,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:41,820 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:41,821 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 688 flow. Second operand 8 states and 184 transitions. [2023-11-24 21:44:41,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 1197 flow [2023-11-24 21:44:41,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 1148 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-24 21:44:41,869 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 751 flow [2023-11-24 21:44:41,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-24 21:44:41,872 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-11-24 21:44:41,872 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 751 flow [2023-11-24 21:44:41,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:41,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:41,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:44:41,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:41,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1106067739, now seen corresponding path program 1 times [2023-11-24 21:44:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:41,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549002660] [2023-11-24 21:44:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:41,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:42,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:42,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:42,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549002660] [2023-11-24 21:44:42,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549002660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:42,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:42,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:44:42,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592551213] [2023-11-24 21:44:42,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:42,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:44:42,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:42,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:44:42,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:44:42,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-24 21:44:42,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 751 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:42,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:42,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-24 21:44:42,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:43,784 INFO L124 PetriNetUnfolderBase]: 4620/7280 cut-off events. [2023-11-24 21:44:43,784 INFO L125 PetriNetUnfolderBase]: For 55374/56463 co-relation queries the response was YES. [2023-11-24 21:44:43,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32891 conditions, 7280 events. 4620/7280 cut-off events. For 55374/56463 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 46684 event pairs, 523 based on Foata normal form. 581/7673 useless extension candidates. Maximal degree in co-relation 32851. Up to 3459 conditions per place. [2023-11-24 21:44:43,858 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 121 selfloop transitions, 5 changer transitions 5/149 dead transitions. [2023-11-24 21:44:43,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 149 transitions, 1673 flow [2023-11-24 21:44:43,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:44:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:44:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2023-11-24 21:44:43,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6646341463414634 [2023-11-24 21:44:43,860 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 109 transitions. [2023-11-24 21:44:43,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 109 transitions. [2023-11-24 21:44:43,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:43,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 109 transitions. [2023-11-24 21:44:43,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:43,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:43,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:43,862 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 751 flow. Second operand 4 states and 109 transitions. [2023-11-24 21:44:43,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 149 transitions, 1673 flow [2023-11-24 21:44:43,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 149 transitions, 1640 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-24 21:44:43,919 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 726 flow [2023-11-24 21:44:43,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=726, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2023-11-24 21:44:43,921 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 34 predicate places. [2023-11-24 21:44:43,921 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 726 flow [2023-11-24 21:44:43,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:43,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:43,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:44:43,922 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:43,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:43,923 INFO L85 PathProgramCache]: Analyzing trace with hash -174301380, now seen corresponding path program 1 times [2023-11-24 21:44:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:43,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983528371] [2023-11-24 21:44:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:43,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:44,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:44,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983528371] [2023-11-24 21:44:44,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983528371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:44,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:44,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:44:44,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066181800] [2023-11-24 21:44:44,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:44,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:44:44,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:44,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:44:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:44:44,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-24 21:44:44,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 726 flow. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:44,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:44,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-24 21:44:44,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:45,333 INFO L124 PetriNetUnfolderBase]: 3505/5615 cut-off events. [2023-11-24 21:44:45,333 INFO L125 PetriNetUnfolderBase]: For 41859/42746 co-relation queries the response was YES. [2023-11-24 21:44:45,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25657 conditions, 5615 events. 3505/5615 cut-off events. For 41859/42746 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 34784 event pairs, 328 based on Foata normal form. 459/5915 useless extension candidates. Maximal degree in co-relation 25618. Up to 1952 conditions per place. [2023-11-24 21:44:45,392 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 112 selfloop transitions, 8 changer transitions 9/146 dead transitions. [2023-11-24 21:44:45,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 146 transitions, 1566 flow [2023-11-24 21:44:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:44:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:44:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2023-11-24 21:44:45,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6780487804878049 [2023-11-24 21:44:45,394 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 139 transitions. [2023-11-24 21:44:45,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 139 transitions. [2023-11-24 21:44:45,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:45,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 139 transitions. [2023-11-24 21:44:45,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:45,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:45,397 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:45,397 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 726 flow. Second operand 5 states and 139 transitions. [2023-11-24 21:44:45,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 146 transitions, 1566 flow [2023-11-24 21:44:45,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 146 transitions, 1551 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:44:45,440 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 693 flow [2023-11-24 21:44:45,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=693, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2023-11-24 21:44:45,441 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2023-11-24 21:44:45,442 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 693 flow [2023-11-24 21:44:45,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:45,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:45,442 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] [2023-11-24 21:44:45,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:44:45,442 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:45,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1536716452, now seen corresponding path program 1 times [2023-11-24 21:44:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810299748] [2023-11-24 21:44:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:45,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:45,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810299748] [2023-11-24 21:44:45,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810299748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:45,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:44:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927410850] [2023-11-24 21:44:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:44:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:44:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:44:45,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-24 21:44:45,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 693 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:45,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:45,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-24 21:44:45,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:46,718 INFO L124 PetriNetUnfolderBase]: 2951/4701 cut-off events. [2023-11-24 21:44:46,719 INFO L125 PetriNetUnfolderBase]: For 39982/40839 co-relation queries the response was YES. [2023-11-24 21:44:46,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22705 conditions, 4701 events. 2951/4701 cut-off events. For 39982/40839 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 28937 event pairs, 316 based on Foata normal form. 293/4843 useless extension candidates. Maximal degree in co-relation 22664. Up to 1944 conditions per place. [2023-11-24 21:44:46,755 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 65 selfloop transitions, 11 changer transitions 40/132 dead transitions. [2023-11-24 21:44:46,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 132 transitions, 1388 flow [2023-11-24 21:44:46,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:44:46,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:44:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2023-11-24 21:44:46,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6056910569105691 [2023-11-24 21:44:46,758 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 149 transitions. [2023-11-24 21:44:46,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 149 transitions. [2023-11-24 21:44:46,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:46,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 149 transitions. [2023-11-24 21:44:46,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:46,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:44:46,761 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 41.0) internal successors, (287), 7 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) [2023-11-24 21:44:46,761 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 693 flow. Second operand 6 states and 149 transitions. [2023-11-24 21:44:46,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 132 transitions, 1388 flow [2023-11-24 21:44:46,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 132 transitions, 1282 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-11-24 21:44:46,802 INFO L231 Difference]: Finished difference. Result has 86 places, 63 transitions, 479 flow [2023-11-24 21:44:46,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=479, PETRI_PLACES=86, PETRI_TRANSITIONS=63} [2023-11-24 21:44:46,803 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2023-11-24 21:44:46,803 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 63 transitions, 479 flow [2023-11-24 21:44:46,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:46,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:46,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:46,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:44:46,804 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:46,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:46,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1514251046, now seen corresponding path program 1 times [2023-11-24 21:44:46,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:46,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324746240] [2023-11-24 21:44:46,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:46,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:47,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324746240] [2023-11-24 21:44:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324746240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:47,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:47,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:44:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281559063] [2023-11-24 21:44:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:47,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:44:47,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:44:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:44:47,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:47,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 63 transitions, 479 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:47,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:47,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:47,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:48,624 INFO L124 PetriNetUnfolderBase]: 1926/3825 cut-off events. [2023-11-24 21:44:48,624 INFO L125 PetriNetUnfolderBase]: For 22297/23029 co-relation queries the response was YES. [2023-11-24 21:44:48,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15089 conditions, 3825 events. 1926/3825 cut-off events. For 22297/23029 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 29457 event pairs, 549 based on Foata normal form. 93/3519 useless extension candidates. Maximal degree in co-relation 15050. Up to 1374 conditions per place. [2023-11-24 21:44:48,670 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 33 selfloop transitions, 17 changer transitions 29/104 dead transitions. [2023-11-24 21:44:48,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 104 transitions, 889 flow [2023-11-24 21:44:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:44:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:44:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2023-11-24 21:44:48,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5670731707317073 [2023-11-24 21:44:48,673 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 186 transitions. [2023-11-24 21:44:48,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 186 transitions. [2023-11-24 21:44:48,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:48,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 186 transitions. [2023-11-24 21:44:48,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:48,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:48,676 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:48,676 INFO L175 Difference]: Start difference. First operand has 86 places, 63 transitions, 479 flow. Second operand 8 states and 186 transitions. [2023-11-24 21:44:48,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 104 transitions, 889 flow [2023-11-24 21:44:48,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 104 transitions, 702 flow, removed 69 selfloop flow, removed 16 redundant places. [2023-11-24 21:44:48,729 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 482 flow [2023-11-24 21:44:48,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-11-24 21:44:48,730 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2023-11-24 21:44:48,730 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 482 flow [2023-11-24 21:44:48,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:48,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:48,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:48,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:44:48,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:48,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash 300031280, now seen corresponding path program 2 times [2023-11-24 21:44:48,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871077378] [2023-11-24 21:44:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:48,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871077378] [2023-11-24 21:44:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871077378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:50,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:50,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:44:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041340933] [2023-11-24 21:44:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:50,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:44:50,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:44:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:44:50,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:50,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 482 flow. Second operand has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:50,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:50,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:50,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:51,538 INFO L124 PetriNetUnfolderBase]: 1727/3480 cut-off events. [2023-11-24 21:44:51,538 INFO L125 PetriNetUnfolderBase]: For 9787/10210 co-relation queries the response was YES. [2023-11-24 21:44:51,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12042 conditions, 3480 events. 1727/3480 cut-off events. For 9787/10210 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 26449 event pairs, 234 based on Foata normal form. 126/3256 useless extension candidates. Maximal degree in co-relation 12008. Up to 1150 conditions per place. [2023-11-24 21:44:51,569 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 53 selfloop transitions, 34 changer transitions 24/136 dead transitions. [2023-11-24 21:44:51,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 136 transitions, 1109 flow [2023-11-24 21:44:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:44:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-24 21:44:51,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 299 transitions. [2023-11-24 21:44:51,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5209059233449478 [2023-11-24 21:44:51,572 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 299 transitions. [2023-11-24 21:44:51,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 299 transitions. [2023-11-24 21:44:51,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:51,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 299 transitions. [2023-11-24 21:44:51,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 21.357142857142858) internal successors, (299), 14 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:51,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 41.0) internal successors, (615), 15 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:51,576 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 41.0) internal successors, (615), 15 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:51,576 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 482 flow. Second operand 14 states and 299 transitions. [2023-11-24 21:44:51,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 136 transitions, 1109 flow [2023-11-24 21:44:51,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 136 transitions, 1067 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-24 21:44:51,602 INFO L231 Difference]: Finished difference. Result has 92 places, 89 transitions, 757 flow [2023-11-24 21:44:51,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=757, PETRI_PLACES=92, PETRI_TRANSITIONS=89} [2023-11-24 21:44:51,603 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 45 predicate places. [2023-11-24 21:44:51,603 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 89 transitions, 757 flow [2023-11-24 21:44:51,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:51,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:51,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:51,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:44:51,604 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:51,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1423862280, now seen corresponding path program 3 times [2023-11-24 21:44:51,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:51,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136741132] [2023-11-24 21:44:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:51,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:52,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136741132] [2023-11-24 21:44:52,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136741132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:52,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:52,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:44:52,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876140485] [2023-11-24 21:44:52,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:52,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:44:52,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:52,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:44:52,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:44:53,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:53,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 89 transitions, 757 flow. Second operand has 12 states, 12 states have (on average 16.583333333333332) internal successors, (199), 12 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:53,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:53,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:53,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:53,940 INFO L124 PetriNetUnfolderBase]: 1676/3291 cut-off events. [2023-11-24 21:44:53,940 INFO L125 PetriNetUnfolderBase]: For 11327/11748 co-relation queries the response was YES. [2023-11-24 21:44:53,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12200 conditions, 3291 events. 1676/3291 cut-off events. For 11327/11748 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 24741 event pairs, 373 based on Foata normal form. 128/3026 useless extension candidates. Maximal degree in co-relation 12164. Up to 1132 conditions per place. [2023-11-24 21:44:53,966 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 52 selfloop transitions, 30 changer transitions 18/125 dead transitions. [2023-11-24 21:44:53,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 125 transitions, 1112 flow [2023-11-24 21:44:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:44:53,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-24 21:44:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 254 transitions. [2023-11-24 21:44:53,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516260162601626 [2023-11-24 21:44:53,969 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 254 transitions. [2023-11-24 21:44:53,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 254 transitions. [2023-11-24 21:44:53,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:53,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 254 transitions. [2023-11-24 21:44:53,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:53,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:53,972 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 41.0) internal successors, (533), 13 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:53,973 INFO L175 Difference]: Start difference. First operand has 92 places, 89 transitions, 757 flow. Second operand 12 states and 254 transitions. [2023-11-24 21:44:53,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 125 transitions, 1112 flow [2023-11-24 21:44:54,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 125 transitions, 926 flow, removed 67 selfloop flow, removed 12 redundant places. [2023-11-24 21:44:54,023 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 704 flow [2023-11-24 21:44:54,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=704, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-11-24 21:44:54,024 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 47 predicate places. [2023-11-24 21:44:54,024 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 704 flow [2023-11-24 21:44:54,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.583333333333332) internal successors, (199), 12 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:54,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:54,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:54,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:44:54,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:54,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:54,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2042986964, now seen corresponding path program 4 times [2023-11-24 21:44:54,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:54,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594340880] [2023-11-24 21:44:54,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:55,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:55,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594340880] [2023-11-24 21:44:55,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594340880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:55,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:55,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:44:55,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785192487] [2023-11-24 21:44:55,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:55,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:44:55,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:44:55,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:44:55,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:44:55,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 704 flow. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:55,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:55,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:44:55,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:56,759 INFO L124 PetriNetUnfolderBase]: 1975/3908 cut-off events. [2023-11-24 21:44:56,760 INFO L125 PetriNetUnfolderBase]: For 9033/9530 co-relation queries the response was YES. [2023-11-24 21:44:56,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13222 conditions, 3908 events. 1975/3908 cut-off events. For 9033/9530 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 30544 event pairs, 634 based on Foata normal form. 145/3618 useless extension candidates. Maximal degree in co-relation 13189. Up to 1494 conditions per place. [2023-11-24 21:44:56,790 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 43 selfloop transitions, 9 changer transitions 53/130 dead transitions. [2023-11-24 21:44:56,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 130 transitions, 1086 flow [2023-11-24 21:44:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:44:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:44:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 240 transitions. [2023-11-24 21:44:56,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532150776053215 [2023-11-24 21:44:56,792 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 240 transitions. [2023-11-24 21:44:56,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 240 transitions. [2023-11-24 21:44:56,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:56,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 240 transitions. [2023-11-24 21:44:56,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.818181818181817) internal successors, (240), 11 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:56,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 41.0) internal successors, (492), 12 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:56,796 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 41.0) internal successors, (492), 12 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:56,796 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 704 flow. Second operand 11 states and 240 transitions. [2023-11-24 21:44:56,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 130 transitions, 1086 flow [2023-11-24 21:44:56,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 130 transitions, 1015 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-11-24 21:44:56,822 INFO L231 Difference]: Finished difference. Result has 101 places, 75 transitions, 526 flow [2023-11-24 21:44:56,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=526, PETRI_PLACES=101, PETRI_TRANSITIONS=75} [2023-11-24 21:44:56,823 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2023-11-24 21:44:56,823 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 75 transitions, 526 flow [2023-11-24 21:44:56,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:56,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:56,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:56,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:44:56,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:56,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1622300746, now seen corresponding path program 5 times [2023-11-24 21:44:56,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:56,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950424008] [2023-11-24 21:44:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:56,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:44:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:44:57,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:44:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950424008] [2023-11-24 21:44:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950424008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:44:57,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:44:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-24 21:44:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283937060] [2023-11-24 21:44:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:44:57,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:44:57,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:44:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:44:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:44:57,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 41 [2023-11-24 21:44:57,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 75 transitions, 526 flow. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:57,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:44:57,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 41 [2023-11-24 21:44:57,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:44:58,888 INFO L124 PetriNetUnfolderBase]: 1987/3827 cut-off events. [2023-11-24 21:44:58,889 INFO L125 PetriNetUnfolderBase]: For 8456/8619 co-relation queries the response was YES. [2023-11-24 21:44:58,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12921 conditions, 3827 events. 1987/3827 cut-off events. For 8456/8619 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 28650 event pairs, 619 based on Foata normal form. 45/3519 useless extension candidates. Maximal degree in co-relation 12894. Up to 1598 conditions per place. [2023-11-24 21:44:58,920 INFO L140 encePairwiseOnDemand]: 28/41 looper letters, 46 selfloop transitions, 31 changer transitions 57/152 dead transitions. [2023-11-24 21:44:58,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 1255 flow [2023-11-24 21:44:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:44:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:44:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 264 transitions. [2023-11-24 21:44:58,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49530956848030017 [2023-11-24 21:44:58,922 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 264 transitions. [2023-11-24 21:44:58,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 264 transitions. [2023-11-24 21:44:58,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:44:58,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 264 transitions. [2023-11-24 21:44:58,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 20.307692307692307) internal successors, (264), 13 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:58,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:58,926 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 41.0) internal successors, (574), 14 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:58,926 INFO L175 Difference]: Start difference. First operand has 101 places, 75 transitions, 526 flow. Second operand 13 states and 264 transitions. [2023-11-24 21:44:58,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 1255 flow [2023-11-24 21:44:58,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 152 transitions, 1116 flow, removed 32 selfloop flow, removed 13 redundant places. [2023-11-24 21:44:58,955 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 622 flow [2023-11-24 21:44:58,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=622, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2023-11-24 21:44:58,956 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 48 predicate places. [2023-11-24 21:44:58,956 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 622 flow [2023-11-24 21:44:58,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:44:58,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:44:58,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:44:58,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:44:58,957 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:44:58,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:44:58,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1748657478, now seen corresponding path program 6 times [2023-11-24 21:44:58,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:44:58,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484385411] [2023-11-24 21:44:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:44:58,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:44:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:00,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484385411] [2023-11-24 21:45:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484385411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:00,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:45:00,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365618546] [2023-11-24 21:45:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:00,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 21:45:00,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:00,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 21:45:00,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:45:00,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:45:00,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 622 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:00,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:00,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:45:00,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:00,632 INFO L124 PetriNetUnfolderBase]: 768/1533 cut-off events. [2023-11-24 21:45:00,632 INFO L125 PetriNetUnfolderBase]: For 2607/2677 co-relation queries the response was YES. [2023-11-24 21:45:00,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 1533 events. 768/1533 cut-off events. For 2607/2677 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9315 event pairs, 176 based on Foata normal form. 21/1429 useless extension candidates. Maximal degree in co-relation 4845. Up to 715 conditions per place. [2023-11-24 21:45:00,641 INFO L140 encePairwiseOnDemand]: 29/41 looper letters, 39 selfloop transitions, 27 changer transitions 11/104 dead transitions. [2023-11-24 21:45:00,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 104 transitions, 846 flow [2023-11-24 21:45:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:45:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:45:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2023-11-24 21:45:00,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304878048780488 [2023-11-24 21:45:00,643 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 174 transitions. [2023-11-24 21:45:00,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 174 transitions. [2023-11-24 21:45:00,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:00,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 174 transitions. [2023-11-24 21:45:00,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:00,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:00,646 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:00,647 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 622 flow. Second operand 8 states and 174 transitions. [2023-11-24 21:45:00,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 104 transitions, 846 flow [2023-11-24 21:45:00,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 104 transitions, 757 flow, removed 27 selfloop flow, removed 11 redundant places. [2023-11-24 21:45:00,660 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 652 flow [2023-11-24 21:45:00,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=652, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2023-11-24 21:45:00,661 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 44 predicate places. [2023-11-24 21:45:00,661 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 652 flow [2023-11-24 21:45:00,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:00,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:00,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:00,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:45:00,662 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:45:00,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash -849363270, now seen corresponding path program 7 times [2023-11-24 21:45:00,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:00,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891900631] [2023-11-24 21:45:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891900631] [2023-11-24 21:45:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891900631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:02,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:02,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-24 21:45:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580739425] [2023-11-24 21:45:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-24 21:45:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-24 21:45:02,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-24 21:45:02,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:45:02,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 652 flow. Second operand has 12 states, 12 states have (on average 16.583333333333332) internal successors, (199), 12 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:02,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:02,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:45:02,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:03,006 INFO L124 PetriNetUnfolderBase]: 1057/2076 cut-off events. [2023-11-24 21:45:03,006 INFO L125 PetriNetUnfolderBase]: For 4101/4188 co-relation queries the response was YES. [2023-11-24 21:45:03,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6875 conditions, 2076 events. 1057/2076 cut-off events. For 4101/4188 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13742 event pairs, 250 based on Foata normal form. 28/1893 useless extension candidates. Maximal degree in co-relation 6854. Up to 1029 conditions per place. [2023-11-24 21:45:03,022 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 55 selfloop transitions, 24 changer transitions 24/130 dead transitions. [2023-11-24 21:45:03,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 130 transitions, 1132 flow [2023-11-24 21:45:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:45:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:45:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2023-11-24 21:45:03,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516629711751663 [2023-11-24 21:45:03,026 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 233 transitions. [2023-11-24 21:45:03,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 233 transitions. [2023-11-24 21:45:03,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:03,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 233 transitions. [2023-11-24 21:45:03,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.181818181818183) internal successors, (233), 11 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:03,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 41.0) internal successors, (492), 12 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:03,030 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 41.0) internal successors, (492), 12 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:03,030 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 652 flow. Second operand 11 states and 233 transitions. [2023-11-24 21:45:03,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 130 transitions, 1132 flow [2023-11-24 21:45:03,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 130 transitions, 1063 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-11-24 21:45:03,046 INFO L231 Difference]: Finished difference. Result has 99 places, 95 transitions, 808 flow [2023-11-24 21:45:03,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=808, PETRI_PLACES=99, PETRI_TRANSITIONS=95} [2023-11-24 21:45:03,048 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 52 predicate places. [2023-11-24 21:45:03,048 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 95 transitions, 808 flow [2023-11-24 21:45:03,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.583333333333332) internal successors, (199), 12 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:03,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:03,049 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] [2023-11-24 21:45:03,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:45:03,049 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-24 21:45:03,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1987260882, now seen corresponding path program 8 times [2023-11-24 21:45:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:03,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389311584] [2023-11-24 21:45:03,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:03,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:04,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:04,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389311584] [2023-11-24 21:45:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389311584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:04,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:04,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-24 21:45:04,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227337096] [2023-11-24 21:45:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:04,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:45:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:45:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:45:04,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-24 21:45:04,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 808 flow. Second operand has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:04,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:04,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-24 21:45:04,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand